- Issue #24336: The contextmanager decorator now works with functions with
keyword arguments called "func" and "self". Patch by Martin Panter.
+- Issue #24522: Fix possible integer overflow in json accelerator module.
+
- Issue #24489: ensure a previously set C errno doesn't disturb cmath.polar().
-- Issue #5633: Fixed timeit when the statement is a string and the setup is not.
+- Issue #24408: Fixed AttributeError in measure() and metrics() methods of
+ tkinter.Font.
-- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument.
- Original patch by David Moore.
+- Issue #14373: C implementation of functools.lru_cache() now can be used with
+ methods.
-- Issue #23840: tokenize.open() now closes the temporary binary file on error
- to fix a resource warning.
+- Issue #8232: webbrowser support incomplete on Windows. Patch by Brandon
+ Milam
-- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked
- cursor type.
+- Issue #24347: Set KeyError if PyDict_GetItemWithError returns NULL.
-- Issue #22107: tempfile.gettempdir() and tempfile.mkdtemp() now try again
- when a directory with the chosen name already exists on Windows as well as
- on Unix. tempfile.mkstemp() now fails early if parent directory is not
- valid (not exists or is a file) on Windows.
+- Issue #24348: Drop superfluous incref/decref.
-- Issue #6598: Increased time precision and random number range in
- email.utils.make_msgid() to strengthen the uniqueness of the message ID.
+- Issue #24359: Check for changed OrderedDict size during iteration.
-- Issue #24091: Fixed various crashes in corner cases in C implementation of
- ElementTree.
+- Issue #24368: Support keyword arguments in OrderedDict methods.
-- Issue #21931: msilib.FCICreate() now raises TypeError in the case of a bad
- argument instead of a ValueError with a bogus FCI error number.
- Patch by Jeffrey Armstrong.
+- Issue #24362: Simplify the C OrderedDict fast nodes resize logic.
-- Issue #23796: peek and read1 methods of BufferedReader now raise ValueError
- if they called on a closed object. Patch by John Hergenroeder.
+- Issue #24377: Fix a ref leak in OrderedDict.__repr__.
-- Issue #24521: Fix possible integer overflows in the pickle module.
+- Issue #24369: Defend against key-changes during iteration.
-- Issue #22931: Allow '[' and ']' in cookie values.
+Tests
+-----
-- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three
- METH_VARARGS methods on _sqlite.Connection.
+- Issue #24373: _testmultiphase and xxlimited now use tp_traverse and
+ tp_finalize to avoid reference leaks encountered when combining tp_dealloc
+ with PyType_FromSpec (see issue #16690 for details)
-- Issue #24094: Fix possible crash in json.encode with poorly behaved dict
- subclasses.
+Documentation
+-------------
-- Asyncio issue 222 / PR 231 (Victor Stinner) -- fix @coroutine
- functions without __name__.
+- Issue #24458: Update documentation to cover multi-phase initialization for
+ extension modules (PEP 489). Patch by Petr Viktorin.
-- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes.
- Patch written by William Orr.
+- Issue #24351: Clarify what is meant by "identifier" in the context of
+ string.Template instances.
-- The keywords attribute of functools.partial is now always a dictionary.
+Build
+-----
-- Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq's siftup
- and siftdown functions.
+- Issue #24432: Update Windows builds and OS X 10.5 installer to use OpenSSL
+ 1.0.2c.
-- Backport collections.deque fixes from Python 3.5. Prevents reentrant badness
- during deletion by deferring the decref until the container has been restored
- to a consistent state.
-- Issue #23008: Fixed resolving attributes with boolean value is False in pydoc.
+What's New in Python 3.5.0 beta 2?
+==================================
-- Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't
- increment unfinished tasks (this bug was introduced in 3.4.3 when
- JoinableQueue was merged with Queue).
+Release date: 2015-05-31
-- Issue #23908: os functions now reject paths with embedded null character
- on Windows instead of silently truncate them.
+Core and Builtins
+-----------------
-- Issue #23728: binascii.crc_hqx() could return an integer outside of the range
- 0-0xffff for empty data.
+- Issue #24284: The startswith and endswith methods of the str class no longer
+ return True when finding the empty string and the indexes are completely out
+ of range.
-- Issue #23811: Add missing newline to the PyCompileError error message.
- Patch by Alex Shkop.
+- Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(),
+ PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains()
+ to check for and handle errors correctly.
-- Issue #17898: Fix exception in gettext.py when parsing certain plural forms.
+- Issue #24328: Fix importing one character extension modules.
-- Issue #22982: Improve BOM handling when seeking to multiple positions of
- a writable text file.
+- Issue #11205: In dictionary displays, evaluate the key before the value.
-- Issue #23865: close() methods in multiple modules now are idempotent and more
- robust at shutdown. If they need to release multiple resources, all are
- released even if errors occur.
+- Issue #24285: Fixed regression that prevented importing extension modules
+ from inside packages. Patch by Petr Viktorin.
-- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if
- the FTP connection failed to fix a ResourceWarning.
+Library
+-------
-- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not
- available. Patch by Davin Potts.
+- Issue #24270: Add math.isclose() and cmath.isclose() functions as per PEP 485.
+ Contributed by Chris Barker and Tal Einat.
-- Issue #15133: _tkinter.tkapp.getboolean() now supports Tcl_Obj and always
- returns bool. tkinter.BooleanVar now validates input values (accepted bool,
- int, str, and Tcl_Obj). tkinter.BooleanVar.get() now always returns bool.
+- Issue #5633: Fixed timeit when the statement is a string and the setup is not.
-- Issue #23338: Fixed formatting ctypes error messages on Cygwin.
- Patch by Makoto Kato.
+- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument.
+ Original patch by David Moore.
-- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and
- arbitrary precision integers added in Tcl 8.5.
+- Issue #16991: Add a C implementation of OrderedDict.
-- Issue #23834: Fix socket.sendto(), use the C Py_ssize_t type to store the
- result of sendto() instead of the C int type.
+- Issue #23934: Fix inspect.signature to fail correctly for builtin types
+ lacking signature information. Initial patch by James Powell.
-- Issue #21526: Tkinter now supports new boolean type in Tcl 8.5.
-- Issue #23838: linecache now clears the cache and returns an empty result on
- MemoryError.
+What's New in Python 3.5.0 beta 1?
+==================================
-- Issue #18473: Fixed 2to3 and 3to2 compatible pickle mappings. Fixed
- ambigious reverse mappings. Added many new mappings. Import mapping is no
- longer applied to modules already mapped with full name mapping.
+Release date: 2015-05-24
-- Issue #23745: The new email header parser now handles duplicate MIME
- parameter names without error, similar to how get_param behaves.
+Core and Builtins
+-----------------
-- Issue #23792: Ignore KeyboardInterrupt when the pydoc pager is active.
- This mimics the behavior of the standard unix pagers, and prevents
- pipepager from shutting down while the pager itself is still running.
+- Issue #24276: Fixed optimization of property descriptor getter.
-- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes.
+- Issue #24268: PEP 489: Multi-phase extension module initialization.
+ Patch by Petr Viktorin.
-- Issue #21802: The reader in BufferedRWPair now is closed even when closing
- writer failed in BufferedRWPair.close().
+- Issue #23955: Add pyvenv.cfg option to suppress registry/environment
+ lookup for generating sys.path on Windows.
-- Issue #23671: string.Template now allows to specify the "self" parameter as
- keyword argument. string.Formatter now allows to specify the "self" and
- the "format_string" parameters as keyword arguments.
+- Issue #24257: Fixed system error in the comparison of faked
+ types.SimpleNamespace.
-- Issue #21560: An attempt to write a data of wrong type no longer cause
- GzipFile corruption. Original patch by Wolfgang Maier.
+- Issue #22939: Fixed integer overflow in iterator object. Patch by
+ Clement Rouault.
-- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes.
+- Issue #23985: Fix a possible buffer overrun when deleting a slice from
+ the front of a bytearray and then appending some other bytes data.
-- Issue #23539: If body is None, http.client.HTTPConnection.request now sets
- Content-Length to 0 for PUT, POST, and PATCH headers to avoid 411 errors from
- some web servers.
+- Issue #24102: Fixed exception type checking in standard error handlers.
-- Issue #22351: The nntplib.NNTP constructor no longer leaves the connection
- and socket open until the garbage collector cleans them up. Patch by
- Martin Panter.
+- Issue #15027: The UTF-32 encoder is now 3x to 7x faster.
-- Issue #23136: _strptime now uniformly handles all days in week 0, including
- Dec 30 of previous year. Based on patch by Jim Carroll.
+- Issue #23290: Optimize set_merge() for cases where the target is empty.
+ (Contributed by Serhiy Storchaka.)
-- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to
- NamedTemporaryFile instance. Patch by Bohuslav Kabrda.
+- Issue #2292: PEP 448: Additional Unpacking Generalizations.
-- Issue #22903: The fake test case created by unittest.loader when it fails
- importing a test module is now picklable.
+- Issue #24096: Make warnings.warn_explicit more robust against mutation of the
+ warnings.filters list.
-- Issue #23568: Add rdivmod support to MagicMock() objects.
- Patch by Håkan Lövdahl.
+- Issue #23996: Avoid a crash when a delegated generator raises an
+ unnormalized StopIteration exception. Patch by Stefan Behnel.
-- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar.
- Patch by Demian Brecht.
+- Issue #23910: Optimize property() getter calls. Patch by Joe Jevnik.
-- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now
- handle exceptions raised by an iterator. Patch by Alon Diamant and Davin
- Potts.
+- Issue #23911: Move path-based importlib bootstrap code to a separate
+ frozen module.
-- Issue #22928: Disabled HTTP header injections in http.client.
- Original patch by Demian Brecht.
+- Issue #24192: Fix namespace package imports.
-- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with
- imp.reload(). Patch by Thomas Kluyver.
+- Issue #24022: Fix tokenizer crash when processing undecodable source code.
-- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST
- flag on certificate stores when it is available.
+- Issue #9951: Added a hex() method to bytes, bytearray, and memoryview.
-- Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the
- SSL layer but the underlying connection hasn't been closed.
+- Issue #22906: PEP 479: Change StopIteration handling inside generators.
-- Issue #23504: Added an __all__ to the types module.
+- Issue #24017: PEP 492: Coroutines with async and await syntax.
-- Issue #20204: Added the __module__ attribute to _tkinter classes.
+Library
+-------
-- Issue #23521: Corrected pure python implementation of timedelta division.
+- Issue #14373: Added C implementation of functools.lru_cache(). Based on
+ patches by Matt Joiner and Alexey Kachayev.
- * Eliminated OverflowError from timedelta * float for some floats;
- * Corrected rounding in timedlta true division.
+- Issue 24230: The tempfile module now accepts bytes for prefix, suffix and dir
+ parameters and returns bytes in such situations (matching the os module APIs).
-- Issue #21619: Popen objects no longer leave a zombie after exit in the with
- statement if the pipe was broken. Patch by Martin Panter.
+- Issue #22189: collections.UserString now supports __getnewargs__(),
+ __rmod__(), casefold(), format_map(), isprintable(), and maketrans().
+ Patch by Joe Jevnik.
-- Issue #6639: Module-level turtle functions no longer raise TclError after
- closing the window.
+- Issue 24244: Prevents termination when an invalid format string is
+ encountered on Windows in strftime.
-- Issues #814253, #9179: Warnings now are raised when group references and
- conditional group references are used in lookbehind assertions in regular
- expressions.
+- Issue #23973: PEP 484: Add the typing module.
-- Issue #23215: Multibyte codecs with custom error handlers that ignores errors
- consumed too much memory and raised SystemError or MemoryError.
- Original patch by Aleksi Torhamo.
+- Issue #23086: The collections.abc.Sequence() abstract base class added
+ *start* and *stop* parameters to the index() mixin.
+ Patch by Devin Jeanpierre.
-- Issue #5700: io.FileIO() called flush() after closing the file.
- flush() was not called in close() if closefd=False.
+- Issue #20035: Replaced the ``tkinter._fix`` module used for setting up the
+ Tcl/Tk environment on Windows with a private function in the ``_tkinter``
+ module that makes no permanent changes to the environment.
-- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding
- differs from file system encoding (e.g. on Mac OS).
+- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked
+ cursor type.
-- Issue #23481: Remove RC4 from the SSL module's default cipher list.
+- Issue #15836: assertRaises(), assertRaisesRegex(), assertWarns() and
+ assertWarnsRegex() assertments now check the type of the first argument
+ to prevent possible user error. Based on patch by Daniel Wagner-Hall.
-- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty
- docstrings.
+- Issue #9858: Add missing method stubs to _io.RawIOBase. Patch by Laura
+ Rupprecht.
-- Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb
- module. Original patch by Claudiu Popa.
+- Issue #22955: attrgetter, itemgetter and methodcaller objects in the operator
+ module now support pickling. Added readable and evaluable repr for these
+ objects. Based on patch by Josh Rosenberg.
-- Issue #23146: Fix mishandling of absolute Windows paths with forward
- slashes in pathlib.
+- Issue #22107: tempfile.gettempdir() and tempfile.mkdtemp() now try again
+ when a directory with the chosen name already exists on Windows as well as
+ on Unix. tempfile.mkstemp() now fails early if parent directory is not
+ valid (not exists or is a file) on Windows.
-- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h.
+- Issue #23780: Improved error message in os.path.join() with single argument.
-- Issue #23367: Fix possible overflows in the unicodedata module.
+- Issue #6598: Increased time precision and random number range in
+ email.utils.make_msgid() to strengthen the uniqueness of the message ID.
-- Issue #23361: Fix possible overflow in Windows subprocess creation code.
+- Issue #24091: Fixed various crashes in corner cases in C implementation of
+ ElementTree.
-- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the
- entire preamble to a multipart body.
+- Issue #21931: msilib.FCICreate() now raises TypeError in the case of a bad
+ argument instead of a ValueError with a bogus FCI error number.
+ Patch by Jeffrey Armstrong.
-- Issue #23310: Fix MagicMock's initializer to work with __methods__, just
- like configure_mock(). Patch by Kasia Jachim.
+- Issue #13866: *quote_via* argument added to urllib.parse.urlencode.
-- asyncio: New event loop APIs: set_task_factory() and get_task_factory().
+- Issue #20098: New mangle_from policy option for email, default True
+ for compat32, but False for all other policies.
-- asyncio: async() function is deprecated in favour of ensure_future().
+- Issue #24211: The email library now supports RFC 6532: it can generate
+ headers using utf-8 instead of encoded words.
-- Issue #23898: Fix inspect.classify_class_attrs() to support attributes
- with overloaded __eq__ and __bool__. Patch by Mike Bayer.
+- Issue #16314: Added support for the LZMA compression in distutils.
-- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers
- around bound methods.
+- Issue #21804: poplib now supports RFC 6856 (UTF8).
-IDLE
-----
+- Issue #18682: Optimized pprint functions for builtin scalar types.
-- Issue #23184: remove unused names and imports in idlelib.
- Initial patch by Al Sweigart.
+- Issue #22027: smtplib now supports RFC 6531 (SMTPUTF8).
-Tests
------
+- Issue #23488: Random generator objects now consume 2x less memory on 64-bit.
-- Issue #21520: test_zipfile no longer fails if the word 'bad' appears
- anywhere in the name of the current directory.
+- Issue #1322: platform.dist() and platform.linux_distribution() functions are
+ now deprecated. Initial patch by Vajrasky Kok.
-- Issue #23799: Added test.support.start_threads() for running and
- cleaning up multiple threads.
+- Issue #22486: Added the math.gcd() function. The fractions.gcd() function now is
+ deprecated. Based on patch by Mark Dickinson.
-- Issue #22390: test.regrtest now emits a warning if temporary files or
- directories are left after running a test.
+- Issue #24064: Property() docstrings are now writeable.
+ (Patch by Berker Peksag.)
-- Issue #23583: Added tests for standard IO streams in IDLE.
+- Issue #22681: Added support for the koi8_t encoding.
-Build
------
+- Issue #22682: Added support for the kz1048 encoding.
-- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make
- the resulting executable faster.
+- Issue #23796: peek and read1 methods of BufferedReader now raise ValueError
+ if they called on a closed object. Patch by John Hergenroeder.
-- Issue #24432: Update Windows builds and OS X 10.5 installer to use OpenSSL
- 1.0.2c.
+- Issue #21795: smtpd now supports the 8BITMIME extension whenever
+ the new *decode_data* constructor argument is set to False.
-C API
------
+- Issue #24155: optimize heapq.heapify() for better cache performance
+ when heapifying large lists.
-- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error
+- Issue #21800: imaplib now supports RFC 5161 (enable), RFC 6855
+ (utf8/internationalized email) and automatically encodes non-ASCII
+ usernames and passwords to UTF8.
-Documentation
--------------
+- Issue #20274: When calling a _sqlite.Connection, it now complains if passed
+ any keyword arguments. Previously it silently ignored them.
-- Issue #24351: Clarify what is meant by "identifier" in the context of
- string.Template instances.
+- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three
+ METH_VARARGS methods on _sqlite.Connection.
-- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter
- doc. Remove obsolete example from FAQ. Patch by Martin Panter.
+- Issue #24134: assertRaises(), assertRaisesRegex(), assertWarns() and
+ assertWarnsRegex() checks now emits a deprecation warning when callable is
+ None or keyword arguments except msg is passed in the context manager mode.
-- Issue #24029: Document the name binding behavior for submodule imports.
+- Issue #24018: Add a collections.abc.Generator abstract base class.
+ Contributed by Stefan Behnel.
-- Issue #24077: Fix typo in man page for -I command option: -s, not -S.
+- Issue #23880: Tkinter's getint() and getdouble() now support Tcl_Obj.
+ Tkinter's getdouble() now supports any numbers (in particular int).
-Tools/Demos
------------
+- Issue #22619: Added negative limit support in the traceback module.
+ Based on patch by Dmitry Kazakov.
-- Issue #23330: h2py now supports arbitrary filenames in #include.
+- Issue #24094: Fix possible crash in json.encode with poorly behaved dict
+ subclasses.
-- Issue #24031: make patchcheck now supports git checkouts, too.
+- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes.
+ Patch written by William Orr.
+- Issue #17445: add difflib.diff_bytes() to support comparison of
+ byte strings (fixes a regression from Python 2).
-What's New in Python 3.4.3?
-===========================
+- Issue #23917: Fall back to sequential compilation when ProcessPoolExecutor
+ doesn't exist. Patch by Claudiu Popa.
-Release date: 2015-02-23
+- Issue #23008: Fixed resolving attributes with boolean value is False in pydoc.
-Core and Builtins
------------------
+- Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't
+ increment unfinished tasks (this bug was introduced when
+ JoinableQueue was merged with Queue).
-- Issue #22735: Fix many edge cases (including crashes) involving custom mro()
- implementations.
+- Issue #23908: os functions now reject paths with embedded null character
+ on Windows instead of silently truncate them.
-- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer()
- and PyObject_AsWriteBuffer().
+- Issue #23728: binascii.crc_hqx() could return an integer outside of the range
+ 0-0xffff for empty data.
-- Issue #21295: Revert some changes (issue #16795) to AST line numbers and
- column offsets that constituted a regression.
+- Issue #23887: urllib.error.HTTPError now has a proper repr() representation.
+ Patch by Berker Peksag.
-- Issue #21408: The default __ne__() now returns NotImplemented if __eq__()
- returned NotImplemented. Original patch by Martin Panter.
+- asyncio: New event loop APIs: set_task_factory() and get_task_factory().
-- Issue #23321: Fixed a crash in str.decode() when error handler returned
- replacment string longer than mailformed input data.
+- asyncio: async() function is deprecated in favour of ensure_future().
-- Issue #23048: Fix jumping out of an infinite while loop in the pdb.
+- Issue 24178: asyncio.Lock, Condition, Semaphore, and BoundedSemaphore
+ support new 'async with' syntax. Contributed by Yury Selivanov.
-- Issue #20335: bytes constructor now raises TypeError when encoding or errors
- is specified with non-string argument. Based on patch by Renaud Blanch.
+- Issue 24179: Support 'async for' for asyncio.StreamReader.
+ Contributed by Yury Selivanov.
-- Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff
- bytes on a 32-bit platform.
+- Issue 24184: Add AsyncIterator and AsyncIterable ABCs to
+ collections.abc. Contributed by Yury Selivanov.
-- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant
- dict insertion in debug mode.
+- Issue 22547: Implement informative __repr__ for inspect.BoundArguments.
+ Contributed by Yury Selivanov.
-- Issue #22643: Fix integer overflow in Unicode case operations (upper, lower,
- title, swapcase, casefold).
+- Issue 24190: Implement inspect.BoundArgument.apply_defaults() method.
+ Contributed by Yury Selivanov.
-- Issue #22604: Fix assertion error in debug mode when dividing a complex
- number by (nan+0j).
+- Issue 20691: Add 'follow_wrapped' argument to
+ inspect.Signature.from_callable() and inspect.signature().
+ Contributed by Yury Selivanov.
-- Issue #22470: Fixed integer overflow issues in "backslashreplace",
- "xmlcharrefreplace", and "surrogatepass" error handlers.
+- Issue 24248: Deprecate inspect.Signature.from_function() and
+ inspect.Signature.from_builtin().
-- Issue #22520: Fix overflow checking when generating the repr of a unicode
- object.
+- Issue #23898: Fix inspect.classify_class_attrs() to support attributes
+ with overloaded __eq__ and __bool__. Patch by Mike Bayer.
-- Issue #22519: Fix overflow checking in PyBytes_Repr.
+- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers
+ around bound methods.
-- Issue #22518: Fix integer overflow issues in latin-1 encoding.
+IDLE
+----
-- Issue #23165: Perform overflow checks before allocating memory in the
- _Py_char2wchar function.
+- Issue #23184: remove unused names and imports in idlelib.
+ Initial patch by Al Sweigart.
-Library
--------
+Tests
+-----
-- Issue #23399: pyvenv creates relative symlinks where possible.
+- Issue #21520: test_zipfile no longer fails if the word 'bad' appears
+ anywhere in the name of the current directory.
-- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to
- prevent corrupting exported buffer.
+- Issue #9517: Move script_helper into the support package.
+ Patch by Christie Wilson.
-- Issue #23363: Fix possible overflow in itertools.permutations.
+Documentation
+-------------
-- Issue #23364: Fix possible overflow in itertools.product.
+- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter
+ doc. Remove obsolete example from FAQ. Patch by Martin Panter.
-- Issue #23366: Fixed possible integer overflow in itertools.combinations.
+- Issue #24029: Document the name binding behavior for submodule imports.
-- Issue #23369: Fixed possible integer overflow in
- _json.encode_basestring_ascii.
+- Issue #24077: Fix typo in man page for -I command option: -s, not -S
-- Issue #23353: Fix the exception handling of generators in
- PyEval_EvalFrameEx(). At entry, save or swap the exception state even if
- PyEval_EvalFrameEx() is called with throwflag=0. At exit, the exception state
- is now always restored or swapped, not only if why is WHY_YIELD or
- WHY_RETURN. Patch co-written with Antoine Pitrou.
+Tools/Demos
+-----------
-- Issue #18518: timeit now rejects statements which can't be compiled outside
- a function or a loop (e.g. "return" or "break").
+- Issue #24000: Improved Argument Clinic's mapping of converters to legacy
+ "format units". Updated the documentation to match.
-- Issue #23094: Fixed readline with frames in Python implementation of pickle.
+- Issue #24001: Argument Clinic converters now use accept={type}
+ instead of types={'type'} to specify the types the converter accepts.
-- Issue #23268: Fixed bugs in the comparison of ipaddress classes.
+- Issue #23330: h2py now supports arbitrary filenames in #include.
-- Issue #21408: Removed incorrect implementations of __ne__() which didn't
- returned NotImplemented if __eq__() returned NotImplemented. The default
- __ne__() now works correctly.
+- Issue #24031: make patchcheck now supports git checkouts, too.
-- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed)
- headers with no key rather than assuming the body has started.
-- Issue #23248: Update ssl error codes from latest OpenSSL git master.
+What's New in Python 3.5.0 alpha 4?
+===================================
-- Issue #23098: 64-bit dev_t is now supported in the os module.
+Release date: 2015-04-19
-- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure"
- as they are written in the standard.
+Core and Builtins
+-----------------
-- Issue #23063: In the disutils' check command, fix parsing of reST with code or
- code-block directives.
+- Issue #22980: Under Linux, GNU/KFreeBSD and the Hurd, C extensions now include
+ the architecture triplet in the extension name, to make it easy to test builds
+ for different ABIs in the same working tree. Under OS X, the extension name
+ now includes PEP 3149-style information.
-- Issue #23209, #23225: selectors.BaseSelector.close() now clears its internal
- reference to the selector mapping to break a reference cycle. Initial patch
- written by Martin Richard.
+- Issue #22631: Added Linux-specific socket constant CAN_RAW_FD_FRAMES.
+ Patch courtesy of Joe Jevnik.
-- Issue #21356: Make ssl.RAND_egd() optional to support LibreSSL. The
- availability of the function is checked during the compilation. Patch written
- by Bernard Spil.
+- Issue #23731: Implement PEP 488: removal of .pyo files.
-- Issue #20896, #22935: The :func:`ssl.get_server_certificate` function now
- uses the :data:`~ssl.PROTOCOL_SSLv23` protocol by default, not
- :data:`~ssl.PROTOCOL_SSLv3`, for maximum compatibility and support platforms
- where :data:`~ssl.PROTOCOL_SSLv3` support is disabled.
+- Issue #23726: Don't enable GC for user subclasses of non-GC types that
+ don't add any new fields. Patch by Eugene Toder.
-- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol
- version.
+- Issue #23309: Avoid a deadlock at shutdown if a daemon thread is aborted
+ while it is holding a lock to a buffered I/O object, and the main thread
+ tries to use the same I/O object (typically stdout or stderr). A fatal
+ error is emitted instead.
-- Issue #23132: Mitigate regression in speed and clarity in functools.total_ordering.
+- Issue #22977: Fixed formatting Windows error messages on Wine.
+ Patch by Martin Panter.
-- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(),
- instead of reading /dev/urandom, to get pseudo-random bytes.
+- Issue #23466: %c, %o, %x, and %X in bytes formatting now raise TypeError on
+ non-integer input.
-- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and
- fragment when it redirects to add a trailing slash.
+- Issue #24044: Fix possible null pointer dereference in list.sort in out of
+ memory conditions.
-- Issue #23093: In the io, module allow more operations to work on detached
- streams.
+- Issue #21354: PyCFunction_New function is exposed by python DLL again.
-- Issue #19104: pprint now produces evaluable output for wrapped strings.
+Library
+-------
-- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter.
+- Issue #23840: tokenize.open() now closes the temporary binary file on error
+ to fix a resource warning.
-- Issue #15513: Added a __sizeof__ implementation for pickle classes.
+- Issue #16914: new debuglevel 2 in smtplib adds timestamps to debug output.
-- Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can
- produce more compact result and no longer produces invalid output if input
- data contains MEMOIZE opcodes together with PUT or BINPUT opcodes.
+- Issue #7159: urllib.request now supports sending auth credentials
+ automatically after the first 401. This enhancement is a superset of the
+ enhancement from issue #19494 and supersedes that change.
-- Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port
- value in the host header was set to "None". Patch by Demian Brecht.
+- Issue #23703: Fix a regression in urljoin() introduced in 901e4e52b20a.
+ Patch by Demian Brecht.
-- Issue #23016: A warning no longer produces an AttributeError when the program
- is run with pythonw.exe.
+- Issue #4254: Adds _curses.update_lines_cols() Patch by Arnon Yaari
-- Issue #21775: shutil.copytree(): fix crash when copying to VFAT. An exception
- handler assumed that that OSError objects always have a 'winerror' attribute.
- That is not the case, so the exception handler itself raised AttributeError
- when run on Linux (and, presumably, any other non-Windows OS).
- Patch by Greg Ward.
+- Issue 19933: Provide default argument for ndigits in round. Patch by
+ Vajrasky Kok.
-- Issue #1218234: Fix inspect.getsource() to load updated source of
- reloaded module. Initial patch by Berker Peksag.
+- Issue #23193: Add a numeric_owner parameter to
+ tarfile.TarFile.extract and tarfile.TarFile.extractall. Patch by
+ Michael Vogt and Eric Smith.
-- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the
- context's check_hostname attribute over the *check_hostname* parameter.
+- Issue #23342: Add a subprocess.run() function than returns a CalledProcess
+ instance for a more consistent API than the existing call* functions.
-- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode
- will return. This resolves CVE-2013-1753.
+- Issue #21217: inspect.getsourcelines() now tries to compute the start and end
+ lines from the code object, fixing an issue when a lambda function is used as
+ decorator argument. Patch by Thomas Ballinger and Allison Kaptur.
-- Issue #22966: Fix __pycache__ pyc file name clobber when pyc_compile is
- asked to compile a source file containing multiple dots in the source file
- name.
+- Issue #24521: Fix possible integer overflows in the pickle module.
-- Issue #21971: Update turtledemo doc and add module to the index.
+- Issue #22931: Allow '[' and ']' in cookie values.
-- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails.
- Original patch by Martin Panter.
+- The keywords attribute of functools.partial is now always a dictionary.
-- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor.
+- Issue #23811: Add missing newline to the PyCompileError error message.
+ Patch by Alex Shkop.
-- Issue #22915: SAX parser now supports files opened with file descriptor or
- bytes path.
+- Issue #21116: Avoid blowing memory when allocating a multiprocessing shared
+ array that's larger than 50% of the available RAM. Patch by Médéric Boquien.
-- Issue #22609: Constructors and update methods of mapping classes in the
- collections module now accept the self keyword argument.
+- Issue #22982: Improve BOM handling when seeking to multiple positions of
+ a writable text file.
-- Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler.
+- Issue #23464: Removed deprecated asyncio JoinableQueue.
-- Issue #22921: Allow SSLContext to take the *hostname* parameter even if
- OpenSSL doesn't support SNI.
+- Issue #23529: Limit the size of decompressed data when reading from
+ GzipFile, BZ2File or LZMAFile. This defeats denial of service attacks
+ using compressed bombs (i.e. compressed payloads which decompress to a huge
+ size). Patch by Martin Panter and Nikolaus Rath.
-- Issue #22894: TestCase.subTest() would cause the test suite to be stopped
- when in failfast mode, even in the absence of failures.
+- Issue #21859: Added Python implementation of io.FileIO.
-- Issue #22638: SSLv3 is now disabled throughout the standard library.
- It can still be enabled by instantiating a SSLContext manually.
+- Issue #23865: close() methods in multiple modules now are idempotent and more
+ robust at shutdown. If they need to release multiple resources, all are
+ released even if errors occur.
-- Issue #22370: Windows detection in pathlib is now more robust.
+- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not
+ available. Patch by Davin Potts.
-- Issue #22841: Reject coroutines in asyncio add_signal_handler().
- Patch by Ludovic.Gasc.
+- Issue #10838: The subprocess now module includes SubprocessError and
+ TimeoutError in its list of exported names for the users wild enough
+ to use ``from subprocess import *``.
-- Issue #22849: Fix possible double free in the io.TextIOWrapper constructor.
+- Issue #23411: Added DefragResult, ParseResult, SplitResult, DefragResultBytes,
+ ParseResultBytes, and SplitResultBytes to urllib.parse.__all__.
+ Patch by Martin Panter.
-- Issue #12728: Different Unicode characters having the same uppercase but
- different lowercase are now matched in case-insensitive regular expressions.
+- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if
+ the FTP connection failed to fix a ResourceWarning.
-- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian
- platforms.
+- Issue #23853: :meth:`socket.socket.sendall` does no more reset the socket
+ timeout each time data is sent successfuly. The socket timeout is now the
+ maximum total duration to send all data.
-- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x.
- Based on patch by Martin Panter.
+- Issue #22721: An order of multiline pprint output of set or dict containing
+ orderable and non-orderable elements no longer depends on iteration order of
+ set or dict.
-- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat.
- Based on patch by Aivars Kalvāns.
+- Issue #15133: _tkinter.tkapp.getboolean() now supports Tcl_Obj and always
+ returns bool. tkinter.BooleanVar now validates input values (accepted bool,
+ int, str, and Tcl_Obj). tkinter.BooleanVar.get() now always returns bool.
-- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments.
+- Issue #10590: xml.sax.parseString() now supports string argument.
-- Issue #22417: Verify certificates by default in httplib (PEP 476).
+- Issue #23338: Fixed formatting ctypes error messages on Cygwin.
+ Patch by Makoto Kato.
-- Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2
- and above. Patch by Tim Graham.
+- Issue #15582: inspect.getdoc() now follows inheritance chains.
-- Issue #22366: urllib.request.urlopen will accept a context object
- (SSLContext) as an argument which will then used be for HTTPS connection.
- Patch by Alex Gaynor.
+- Issue #2175: SAX parsers now support a character stream of InputSource object.
-- Issue #22776: Brought excluded code into the scope of a try block in
- SysLogHandler.emit().
+- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and
+ arbitrary precision integers added in Tcl 8.5.
-- Issue #22665: Add missing get_terminal_size and SameFileError to
- shutil.__all__.
+- Issue #23834: Fix socket.sendto(), use the C Py_ssize_t type to store the
+ result of sendto() instead of the C int type.
-- Issue #17381: Fixed handling of case-insensitive ranges in regular
- expressions.
+- Issue #23618: :meth:`socket.socket.connect` now waits until the connection
+ completes instead of raising :exc:`InterruptedError` if the connection is
+ interrupted by signals, signal handlers don't raise an exception and the
+ socket is blocking or has a timeout. :meth:`socket.socket.connect` still
+ raise :exc:`InterruptedError` for non-blocking sockets.
-- Issue #22410: Module level functions in the re module now cache compiled
- locale-dependent regular expressions taking into account the locale.
+- Issue #21526: Tkinter now supports new boolean type in Tcl 8.5.
-- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.)
- now return False when the underlying stat call raises NotADirectoryError.
+- Issue #23836: Fix the faulthandler module to handle reentrant calls to
+ its signal handlers.
-- Issue #8876: distutils now falls back to copying files when hard linking
- doesn't work. This allows use with special filesystems such as VirtualBox
- shared folders.
+- Issue #23838: linecache now clears the cache and returns an empty result on
+ MemoryError.
-- Issue #18853: Fixed ResourceWarning in shlex.__nain__.
+- Issue #10395: Added os.path.commonpath(). Implemented in posixpath and ntpath.
+ Based on patch by Rafik Draoui.
-- Issue #9351: Defaults set with set_defaults on an argparse subparser
- are no longer ignored when also set on the parent parser.
+- Issue #23611: Serializing more "lookupable" objects (such as unbound methods
+ or nested classes) now are supported with pickle protocols < 4.
-- Issue #21991: Make email.headerregistry's header 'params' attributes
- be read-only (MappingProxyType). Previously the dictionary was modifiable
- but a new one was created on each access of the attribute.
+- Issue #13583: sqlite3.Row now supports slice indexing.
-- Issue #22641: In asyncio, the default SSL context for client connections
- is now created using ssl.create_default_context(), for stronger security.
+- Issue #18473: Fixed 2to3 and 3to2 compatible pickle mappings. Fixed
+ ambigious reverse mappings. Added many new mappings. Import mapping is no
+ longer applied to modules already mapped with full name mapping.
-- Issue #22435: Fix a file descriptor leak when SocketServer bind fails.
+- Issue #23485: select.select() is now retried automatically with the
+ recomputed timeout when interrupted by a signal, except if the signal handler
+ raises an exception. This change is part of the PEP 475.
-- Issue #13096: Fixed segfault in CTypes POINTER handling of large
- values.
+- Issue #23752: When built from an existing file descriptor, io.FileIO() now
+ only calls fstat() once. Before fstat() was called twice, which was not
+ necessary.
-- Issue #11694: Raise ConversionError in xdrlib as documented. Patch
- by Filip Gruszczyński and Claudiu Popa.
+- Issue #23704: collections.deque() objects now support __add__, __mul__, and
+ __imul__().
-- Issue #22462: Fix pyexpat's creation of a dummy frame to make it
- appear in exception tracebacks.
+- Issue #23171: csv.Writer.writerow() now supports arbitrary iterables.
-- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called
- with an iterator alive.
+- Issue #23745: The new email header parser now handles duplicate MIME
+ parameter names without error, similar to how get_param behaves.
-- Issue #11866: Eliminated race condition in the computation of names
- for new threads.
+- Issue #22117: Fix os.utime(), it now rounds the timestamp towards minus
+ infinity (-inf) instead of rounding towards zero.
-- Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules
- is mutated while iterating. Patch by Olivier Grisel.
+- Issue #23310: Fix MagicMock's initializer to work with __methods__, just
+ like configure_mock(). Patch by Kasia Jachim.
-
-- Issue #22219: The zipfile module CLI now adds entries for directories
- (including empty directories) in ZIP file.
+Build
+-----
-- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the
- environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows.
+- Issue #23817: FreeBSD now uses "1.0" the the SOVERSION as other operating
+ systems, instead of just "1".
-- Issue #20076: Added non derived UTF-8 aliases to locale aliases table.
+- Issue #23501: Argument Clinic now generates code into separate files by default.
-- Issue #20079: Added locales supported in glibc 2.18 to locale alias table.
+Tests
+-----
-- Issue #22396: On 32-bit AIX platform, don't expose os.posix_fadvise() nor
- os.posix_fallocate() because their prototypes in system headers are wrong.
+- Issue #23799: Added test.support.start_threads() for running and
+ cleaning up multiple threads.
-- Issue #22517: When a io.BufferedRWPair object is deallocated, clear its
- weakrefs.
+- Issue #22390: test.regrtest now emits a warning if temporary files or
+ directories are left after running a test.
-- Issue #22448: Improve canceled timer handles cleanup to prevent
- unbound memory usage. Patch by Joshua Moore-Oliva.
+Tools/Demos
+-----------
-- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no
- FD is registered.
+- Issue #18128: pygettext now uses standard +NNNN format in the
+ POT-Creation-Date header.
-IDLE
-----
+- Issue #23935: Argument Clinic's understanding of format units
+ accepting bytes, bytearrays, and buffers is now consistent with
+ both the documentation and the implementation.
-- Issue #20577: Configuration of the max line length for the FormatParagraph
- extension has been moved from the General tab of the Idle preferences dialog
- to the FormatParagraph tab of the Config Extensions dialog.
- Patch by Tal Einat.
+- Issue #23944: Argument Clinic now wraps long impl prototypes at column 78.
-- Issue #16893: Update Idle doc chapter to match current Idle and add new
- information.
+- Issue #20586: Argument Clinic now ensures that functions without docstrings
+ have signatures.
-- Issue #3068: Add Idle extension configuration dialog to Options menu.
- Changes are written to HOME/.idlerc/config-extensions.cfg.
- Original patch by Tal Einat.
+- Issue #23492: Argument Clinic now generates argument parsing code with
+ PyArg_Parse instead of PyArg_ParseTuple if possible.
-- Issue #16233: A module browser (File : Class Browser, Alt+C) requires a
- editor window with a filename. When Class Browser is requested otherwise,
- from a shell, output window, or 'Untitled' editor, Idle no longer displays
- an error box. It now pops up an Open Module box (Alt+M). If a valid name
- is entered and a module is opened, a corresponding browser is also opened.
+- Issue #23500: Argument Clinic is now smarter about generating the "#ifndef"
+ (empty) definition of the methoddef macro: it's only generated once, even
+ if Argument Clinic processes the same symbol multiple times, and it's emitted
+ at the end of all processing rather than immediately after the first use.
-- Issue #4832: Save As to type Python files automatically adds .py to the
- name you enter (even if your system does not display it). Some systems
- automatically add .txt when type is Text files.
+C API
+-----
-- Issue #21986: Code objects are not normally pickled by the pickle module.
- To match this, they are no longer pickled when running under Idle.
+- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error
-- Issue #23180: Rename IDLE "Windows" menu item to "Window".
- Patch by Al Sweigart.
-Tests
------
+What's New in Python 3.5.0 alpha 3?
+===================================
-- Issue #23392: Added tests for marshal C API that works with FILE*.
+Release date: 2015-03-28
-- Issue #18982: Add tests for CLI of the calendar module.
+Core and Builtins
+-----------------
-- Issue #19548: Added some additional checks to test_codecs to ensure that
- statements in the updated documentation remain accurate. Patch by Martin
- Panter.
+- Issue #23573: Increased performance of string search operations (str.find,
+ str.index, str.count, the in operator, str.split, str.partition) with
+ arguments of different kinds (UCS1, UCS2, UCS4).
-- Issue #22838: All test_re tests now work with unittest test discovery.
+- Issue #23753: Python doesn't support anymore platforms without stat() or
+ fstat(), these functions are always required.
-- Issue #22173: Update lib2to3 tests to use unittest test discovery.
+- Issue #23681: The -b option now affects comparisons of bytes with int.
-- Issue #16000: Convert test_curses to use unittest.
+- Issue #23632: Memoryviews now allow tuple indexing (including for
+ multi-dimensional memoryviews).
-- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not
- present. Patch by Remi Pointel.
+- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet.
-- Issue #22770: Prevent some Tk segfaults on OS X when running gui tests.
+- Issue #23629: Fix the default __sizeof__ implementation for variable-sized
+ objects.
-- Issue #23211: Workaround test_logging failure on some OS X 10.6 systems.
+Library
+-------
-- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level
- values (like 0.9.8zc).
+- Issue #14260: The groupindex attribute of regular expression pattern object
+ now is non-modifiable mapping.
-- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout.
+- Issue #23792: Ignore KeyboardInterrupt when the pydoc pager is active.
+ This mimics the behavior of the standard unix pagers, and prevents
+ pipepager from shutting down while the pager itself is still running.
-Build
------
+- Issue #23775: pprint() of OrderedDict now outputs the same representation
+ as repr().
-- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure
- script.
+- Issue #23765: Removed IsBadStringPtr calls in ctypes
-- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support
- SSL 3.
+- Issue #22364: Improved some re error messages using regex for hints.
-- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by
- Jonathan Hosmer.
+- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes.
-- Issue #18096: Fix library order returned by python-config.
+- Issue #21717: The zipfile.ZipFile.open function now supports 'x' (exclusive
+ creation) mode.
-- Issue #17219: Add library build dir for Python extension cross-builds.
+- Issue #21802: The reader in BufferedRWPair now is closed even when closing
+ writer failed in BufferedRWPair.close().
-- Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer.
+- Issue #23622: Unknown escapes in regular expressions that consist of ``'\'``
+ and ASCII letter now raise a deprecation warning and will be forbidden in
+ Python 3.6.
-C API
------
+- Issue #23671: string.Template now allows to specify the "self" parameter as
+ keyword argument. string.Formatter now allows to specify the "self" and
+ the "format_string" parameters as keyword arguments.
-- Issue #22079: PyType_Ready() now checks that statically allocated type has
- no dynamically allocated bases.
+- Issue #23502: The pprint module now supports mapping proxies.
-Documentation
--------------
+- Issue #17530: pprint now wraps long bytes objects and bytearrays.
-- Issue #19548: Update the codecs module documentation to better cover the
- distinction between text encodings and other codecs, together with other
- clarifications. Patch by Martin Panter.
+- Issue #22687: Fixed some corner cases in breaking words in tetxtwrap.
+ Got rid of quadratic complexity in breaking long words.
-- Issue #22914: Update the Python 2/3 porting HOWTO to describe a more automated
- approach.
+- Issue #4727: The copy module now uses pickle protocol 4 (PEP 3154) and
+ supports copying of instances of classes whose __new__ method takes
+ keyword-only arguments.
-- Issue #21514: The documentation of the json module now refers to new JSON RFC
- 7159 instead of obsoleted RFC 4627.
+- Issue #23491: Added a zipapp module to support creating executable zip
+ file archives of Python code. Registered ".pyz" and ".pyzw" extensions
+ on Windows for these archives (PEP 441).
-Tools/Demos
------------
+- Issue #23657: Avoid explicit checks for str in zipapp, adding support
+ for pathlib.Path objects as arguments.
-- Issue #22314: pydoc now works when the LINES environment variable is set.
+- Issue #23688: Added support of arbitrary bytes-like objects and avoided
+ unnecessary copying of memoryview in gzip.GzipFile.write().
+ Original patch by Wolfgang Maier.
-Windows
--------
+- Issue #23252: Added support for writing ZIP files to unseekable streams.
-- Issue #17896: The Windows build scripts now expect external library sources
- to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``.
+- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes.
-- Issue #17717: The Windows build scripts now use a copy of NASM pulled from
- svn.python.org to build OpenSSL.
+- Issue #23539: If body is None, http.client.HTTPConnection.request now sets
+ Content-Length to 0 for PUT, POST, and PATCH headers to avoid 411 errors from
+ some web servers.
-- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j.
+- Issue #22351: The nntplib.NNTP constructor no longer leaves the connection
+ and socket open until the garbage collector cleans them up. Patch by
+ Martin Panter.
+- Issue #23704: collections.deque() objects now support methods for index(),
+ insert(), and copy(). This allows deques to be registered as a
+ MutableSequence and it improves their substitutablity for lists.
-What's New in Python 3.4.2?
-===========================
+- Issue #23715: :func:`signal.sigwaitinfo` and :func:`signal.sigtimedwait` are
+ now retried when interrupted by a signal not in the *sigset* parameter, if
+ the signal handler does not raise an exception. signal.sigtimedwait()
+ recomputes the timeout with a monotonic clock when it is retried.
-Release date: 2014-10-06
+- Issue #23001: Few functions in modules mmap, ossaudiodev, socket, ssl, and
+ codecs, that accepted only read-only bytes-like object now accept writable
+ bytes-like object too.
-Library
--------
+- Issue #23646: If time.sleep() is interrupted by a signal, the sleep is now
+ retried with the recomputed delay, except if the signal handler raises an
+ exception (PEP 475).
-- Issue #10510: distutils register and upload methods now use HTML standards
- compliant CRLF line endings.
+- Issue #23136: _strptime now uniformly handles all days in week 0, including
+ Dec 30 of previous year. Based on patch by Jim Carroll.
-- Issue #9850: Fixed macpath.join() for empty first component. Patch by
- Oleg Oshmyan.
+- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to
+ NamedTemporaryFile instance. Patch by Bohuslav Kabrda.
-- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when
- used in the with statement in generator.
+- Issue #22903: The fake test case created by unittest.loader when it fails
+ importing a test module is now picklable.
-- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS
- directory attributes.
+- Issue #22181: On Linux, os.urandom() now uses the new getrandom() syscall if
+ available, syscall introduced in the Linux kernel 3.17. It is more reliable
+ and more secure, because it avoids the need of a file descriptor and waits
+ until the kernel has enough entropy.
+
+- Issue #2211: Updated the implementation of the http.cookies.Morsel class.
+ Setting attributes key, value and coded_value directly now is deprecated.
+ update() and setdefault() now transform and check keys. Comparing for
+ equality now takes into account attributes key, value and coded_value.
+ copy() now returns a Morsel, not a dict. repr() now contains all attributes.
+ Optimized checking keys and quoting values. Added new tests.
+ Original patch by Demian Brecht.
-- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory
- records if allowZip64 is false.
+- Issue #18983: Allow selection of output units in timeit.
+ Patch by Julian Gindi.
-- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re
- module. Removed trailing spaces in debugging output.
+- Issue #23631: Fix traceback.format_list when a traceback has been mutated.
-- Issue #22423: Unhandled exception in thread no longer causes unhandled
- AttributeError when sys.stderr is None.
+- Issue #23568: Add rdivmod support to MagicMock() objects.
+ Patch by Håkan Lövdahl.
-- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects
- line buffering, rather than block buffering. Patch by Akira Li.
+- Issue #2052: Add charset parameter to HtmlDiff.make_file().
+- Issue #23668: Support os.truncate and os.ftruncate on Windows.
-What's New in Python 3.4.2rc1?
-==============================
+- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar.
+ Patch by Demian Brecht.
-Release date: 2014-09-22
+- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now
+ handle exceptions raised by an iterator. Patch by Alon Diamant and Davin
+ Potts.
-Core and Builtins
------------------
+- Issue #23581: Add matmul support to MagicMock. Patch by Håkan Lövdahl.
-- Issue #22258: Fix the the internal function set_inheritable() on Illumos.
- This platform exposes the function ``ioctl(FIOCLEX)``, but calling it fails
- with errno is ENOTTY: "Inappropriate ioctl for device". set_inheritable()
- now falls back to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``).
+- Issue #23566: enable(), register(), dump_traceback() and
+ dump_traceback_later() functions of faulthandler now accept file
+ descriptors. Patch by Wei Wu.
-- Issue #21669: With the aid of heuristics in SyntaxError.__init__, the
- parser now attempts to generate more meaningful (or at least more search
- engine friendly) error messages when "exec" and "print" are used as
- statements.
+- Issue #22928: Disabled HTTP header injections in http.client.
+ Original patch by Demian Brecht.
-- Issue #21642: If the conditional if-else expression, allow an integer written
- with no space between itself and the ``else`` keyword (e.g. ``True if 42else
- False``) to be valid syntax.
+- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with
+ imp.reload(). Patch by Thomas Kluyver.
-- Issue #21523: Fix over-pessimistic computation of the stack effect of
- some opcodes in the compiler. This also fixes a quadratic compilation
- time issue noticeable when compiling code with a large number of "and"
- and "or" operators.
+- Issue #23605: os.walk() now calls os.scandir() instead of os.listdir().
+ The usage of os.scandir() reduces the number of calls to os.stat().
+ Initial patch written by Ben Hoyt.
-Library
--------
+Build
+-----
-- Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now
- a method. Since EmailMessage is provisional, we can change the API in a
- maintenance release, but we use a trick to remain backward compatible with
- 3.4.0/1.
+- Issue #23585: make patchcheck will ensure the interpreter is built.
-- Issue #21079: Fix email.message.EmailMessage.is_attachment to return the
- correct result when the header has parameters as well as a value.
+Tests
+-----
-- Issue #22247: Add NNTPError to nntplib.__all__.
+- Issue #23583: Added tests for standard IO streams in IDLE.
-- Issue #4180: The warnings registries are now reset when the filters
- are modified.
+- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout.
-- Issue #22419: Limit the length of incoming HTTP request in wsgiref server to
- 65536 bytes and send a 414 error code for higher lengths. Patch contributed
- by Devin Cook.
+Tools/Demos
+-----------
-- Lax cookie parsing in http.cookies could be a security issue when combined
- with non-standard cookie handling in some Web browsers. Reported by
- Sergey Bobrov.
+- Issue #22826: The result of open() in Tools/freeze/bkfile.py is now better
+ compatible with regular files (in particular it now supports the context
+ management protocol).
-- Issue #22384: An exception in Tkinter callback no longer crashes the program
- when it is run with pythonw.exe.
-- Issue #22168: Prevent turtle AttributeError with non-default Canvas on OS X.
+What's New in Python 3.5 alpha 2?
+=================================
-- Issue #21147: sqlite3 now raises an exception if the request contains a null
- character instead of truncate it. Based on patch by Victor Stinner.
+Release date: 2015-03-09
-- Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with
- empty string or tuple argument.
+Core and Builtins
+-----------------
-- Issue #21951: Tkinter now most likely raises MemoryError instead of crash
- if the memory allocation fails.
+- Issue #23571: PyObject_Call() and PyCFunction_Call() now raise a SystemError
+ if a function returns a result and raises an exception. The SystemError is
+ chained to the previous exception.
-- Issue #22338: Fix a crash in the json module on memory allocation failure.
+Library
+-------
-- Issue #22226: First letter no longer is stripped from the "status" key in
- the result of Treeview.heading().
+- Issue #22524: New os.scandir() function, part of the PEP 471: "os.scandir()
+ function -- a better and faster directory iterator". Patch written by Ben
+ Hoyt.
-- Issue #19524: Fixed resource leak in the HTTP connection when an invalid
- response is received. Patch by Martin Panter.
+- Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address.
-- Issue #22051: turtledemo no longer reloads examples to re-run them.
- Initialization of variables and gui setup should be done in main(),
- which is called each time a demo is run, but not on import.
+- Issue #21793: BaseHTTPRequestHandler again logs response code as numeric,
+ not as stringified enum. Patch by Demian Brecht.
-- Issue #21933: Turtledemo users can change the code font size with a menu
- selection or control(command) '-' or '+' or control-mousewheel.
- Original patch by Lita Cho.
+- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST
+ flag on certificate stores when it is available.
-- Issue #21597: The separator between the turtledemo text pane and the drawing
- canvas can now be grabbed and dragged with a mouse. The code text pane can
- be widened to easily view or copy the full width of the text. The canvas
- can be widened on small screens. Original patches by Jan Kanis and Lita Cho.
+- Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the
+ SSL layer but the underlying connection hasn't been closed.
-- Issue #18132: Turtledemo buttons no longer disappear when the window is
- shrunk. Original patches by Jan Kanis and Lita Cho.
+- Issue #23504: Added an __all__ to the types module.
-- Issue #22216: smtplib now resets its state more completely after a quit. The
- most obvious consequence of the previous behavior was a STARTTLS failure
- during a connect/starttls/quit/connect/starttls sequence.
+- Issue #23563: Optimized utility functions in urllib.parse.
-- Issue #22185: Fix an occasional RuntimeError in threading.Condition.wait()
- caused by mutation of the waiters queue without holding the lock. Patch
- by Doug Zongker.
+- Issue #7830: Flatten nested functools.partial.
-- Issue #22182: Use e.args to unpack exceptions correctly in
- distutils.file_util.move_file. Patch by Claudiu Popa.
+- Issue #20204: Added the __module__ attribute to _tkinter classes.
-- The webbrowser module now uses subprocess's start_new_session=True rather
- than a potentially risky preexec_fn=os.setsid call.
+- Issue #19980: Improved help() for non-recognized strings. help('') now
+ shows the help on str. help('help') now shows the help on help().
+ Original patch by Mark Lawrence.
-- Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode.
+- Issue #23521: Corrected pure python implementation of timedelta division.
-- Issue #22191: Fix warnings.__all__.
+ * Eliminated OverflowError from timedelta * float for some floats;
+ * Corrected rounding in timedlta true division.
-- Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows.
+- Issue #21619: Popen objects no longer leave a zombie after exit in the with
+ statement if the pipe was broken. Patch by Martin Panter.
-- Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter.
+- Issue #22936: Make it possible to show local variables in tracebacks for
+ both the traceback module and unittest.
-- Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names.
+- Issue #15955: Add an option to limit the output size in bz2.decompress().
+ Patch by Nikolaus Rath.
-- Issue #8797: Raise HTTPError on failed Basic Authentication immediately.
- Initial patch by Sam Bull.
+- Issue #6639: Module-level turtle functions no longer raise TclError after
+ closing the window.
-- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems()
- in the mailbox module.
+- Issues #814253, #9179: Group references and conditional group references now
+ work in lookbehind assertions in regular expressions.
-- Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when
- parsing long line. Original patch by Raymond Hettinger.
+- Issue #23215: Multibyte codecs with custom error handlers that ignores errors
+ consumed too much memory and raised SystemError or MemoryError.
+ Original patch by Aleksi Torhamo.
-- Issue #22184: The functools LRU Cache decorator factory now gives an earlier
- and clearer error message when the user forgets the required parameters.
+- Issue #5700: io.FileIO() called flush() after closing the file.
+ flush() was not called in close() if closefd=False.
-- Issue #17923: glob() patterns ending with a slash no longer match non-dirs on
- AIX. Based on patch by Delhallt.
+- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding
+ differs from file system encoding (e.g. on Mac OS).
-- Issue #21121: Don't force 3rd party C extensions to be built with
- -Werror=declaration-after-statement.
+- Issue #23481: Remove RC4 from the SSL module's default cipher list.
-- Issue #21975: Fixed crash when using uninitialized sqlite3.Row (in particular
- when unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the
- __new__() method.
+- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty
+ docstrings.
-- Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk.
- In particular this allows to initialize images from binary data.
+- Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb
+ module. Original patch by Claudiu Popa.
-- Issue #17172: Make turtledemo start as active on OS X even when run with
- subprocess. Patch by Lita Cho.
+- Issue #23239: ssl.match_hostname() now supports matching of IP addresses.
-- Issue #21704: Fix build error for _multiprocessing when semaphores
- are not available. Patch by Arfrever Frehtes Taifersar Arahesis.
+- Issue #23146: Fix mishandling of absolute Windows paths with forward
+ slashes in pathlib.
-- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError
- on closed socket. repr(socket.socket) already works fine.
+- Issue #23096: Pickle representation of floats with protocol 0 now is the same
+ for both Python and C implementations.
-- Issue #16133: The asynchat.async_chat.handle_read() method now ignores
- BlockingIOError exceptions.
+- Issue #19105: pprint now more efficiently uses free space at the right.
-- Issue #22044: Fixed premature DECREF in call_tzinfo_method.
- Patch by Tom Flanagan.
+- Issue #14910: Add allow_abbrev parameter to argparse.ArgumentParser. Patch by
+ Jonathan Paugh, Steven Bethard, paul j3 and Daniel Eriksson.
-- Issue #19884: readline: Disable the meta modifier key if stdout is not
- a terminal to not write the ANSI sequence "\033[1034h" into stdout. This
- sequence is used on some terminal (ex: TERM=xterm-256color") to enable
- support of 8 bit characters.
+- Issue #21717: tarfile.open() now supports 'x' (exclusive creation) mode.
-- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is
- specified.
+- Issue #23344: marshal.dumps() is now 20-25% faster on average.
-- Issue #21044: tarfile.open() now handles fileobj with an integer 'name'
- attribute. Based on patch by Antoine Pietri.
+- Issue #20416: marshal.dumps() with protocols 3 and 4 is now 40-50% faster on
+ average.
-- Issue #21867: Prevent turtle crash due to invalid undo buffer size.
+- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h.
-- Issue #19076: Don't pass the redundant 'file' argument to self.error().
+- Issue #23367: Fix possible overflows in the unicodedata module.
-- Issue #21942: Fixed source file viewing in pydoc's server mode on Windows.
+- Issue #23361: Fix possible overflow in Windows subprocess creation code.
-- Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError
- if the number of received bytes is negative.
+- logging.handlers.QueueListener now takes a respect_handler_level keyword
+ argument which, if set to True, will pass messages to handlers taking handler
+ levels into account.
-- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't
- get a bytes string
+- Issue #19705: turtledemo now has a visual sorting algorithm demo. Original
+ patch from Jason Yeo.
-- Issue #21707: Add missing kwonlyargcount argument to
- ModuleFinder.replace_paths_in_code().
+- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the
+ entire preamble to a multipart body.
-- Issue #20639: calling Path.with_suffix('') allows removing the suffix
- again. Patch by July Tikhonov.
+Build
+-----
-- Issue #21714: Disallow the construction of invalid paths using
- Path.with_name(). Original patch by Antony Lee.
+- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make
+ the resulting executable faster.
-- Issue #21897: Fix a crash with the f_locals attribute with closure
- variables when frame.clear() has been called.
+- Issue #23686: Update OS X 10.5 installer build to use OpenSSL 1.0.2a.
-- Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed
- as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman.
+C API
+-----
-- Issue #21090: io.FileIO.readall() does not ignore I/O errors anymore. Before,
- it ignored I/O errors if at least the first C call read() succeed.
+- Issue #20204: Deprecation warning is now raised for builtin type without the
+ __module__ attribute.
-- Issue #21781: ssl.RAND_add() now supports strings longer than 2 GB.
+Windows
+-------
-- Issue #11453: asyncore: emit a ResourceWarning when an unclosed file_wrapper
- object is destroyed. The destructor now closes the file if needed. The
- close() method can now be called twice: the second call does nothing.
+- Issue #23465: Implement PEP 486 - Make the Python Launcher aware of virtual
+ environments. Patch by Paul Moore.
-- Issue #21858: Better handling of Python exceptions in the sqlite3 module.
+- Issue #23437: Make user scripts directory versioned on Windows. Patch by Paul
+ Moore.
-- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is
- discarded after parsing, so the input file isn't unexpectedly closed.
-- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure
- files closing. Patch by Claudiu Popa.
+What's New in Python 3.5 alpha 1?
+=================================
-- Issue #21491: socketserver: Fix a race condition in child processes reaping.
+Release date: 2015-02-08
-- Issue #21832: Require named tuple inputs to be exact strings.
+Core and Builtins
+-----------------
-- Issue #19145: The times argument for itertools.repeat now handles
- negative values the same way for keyword arguments as it does for
- positional arguments.
+- Issue #23285: PEP 475 - EINTR handling.
-- Issue #21812: turtle.shapetransform did not tranform the turtle on the
- first call. (Issue identified and fixed by Lita Cho.)
+- Issue #22735: Fix many edge cases (including crashes) involving custom mro()
+ implementations.
-- Issue #21635: The difflib SequenceMatcher.get_matching_blocks() method
- cache didn't match the actual result. The former was a list of tuples
- and the latter was a list of named tuples.
+- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer()
+ and PyObject_AsWriteBuffer().
-- Issue #21722: The distutils "upload" command now exits with a non-zero
- return code when uploading fails. Patch by Martin Dengler.
+- Issue #21295: Revert some changes (issue #16795) to AST line numbers and
+ column offsets that constituted a regression.
-- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the
- maximum size. Patch written by Vajrasky Kok.
+- Issue #22986: Allow changing an object's __class__ between a dynamic type and
+ static type in some cases.
-- Issue #21326: Add a new is_closed() method to asyncio.BaseEventLoop.
- run_forever() and run_until_complete() methods of asyncio.BaseEventLoop now
- raise an exception if the event loop was closed.
+- Issue #15859: PyUnicode_EncodeFSDefault(), PyUnicode_EncodeMBCS() and
+ PyUnicode_EncodeCodePage() now raise an exception if the object is not an
+ Unicode object. For PyUnicode_EncodeFSDefault(), it was already the case on
+ platforms other than Windows. Patch written by Campbell Barton.
-- Issue #21774: Fixed NameError for an incorrect variable reference in the
- XML Minidom code for creating processing instructions.
- (Found and fixed by Claudiu Popa.)
+- Issue #21408: The default __ne__() now returns NotImplemented if __eq__()
+ returned NotImplemented. Original patch by Martin Panter.
-- Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths
- before checking for a CGI script at that path.
+- Issue #23321: Fixed a crash in str.decode() when error handler returned
+ replacment string longer than mailformed input data.
-- Issue #21310: Fixed possible resource leak in failed open().
+- Issue #22286: The "backslashreplace" error handlers now works with
+ decoding and translating.
-- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods.
+- Issue #23253: Delay-load ShellExecute[AW] in os.startfile for reduced
+ startup overhead on Windows.
-- Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a
- valid file.
+- Issue #22038: pyatomic.h now uses stdatomic.h or GCC built-in functions for
+ atomic memory access if available. Patch written by Vitor de Lima and Gustavo
+ Temple.
-- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods
- that use 'self' in the example code is generated correctly.
+- Issue #20284: %-interpolation (aka printf) formatting added for bytes and
+ bytearray.
-- Issue #21463: In urllib.request, fix pruning of the FTP cache.
+- Issue #23048: Fix jumping out of an infinite while loop in the pdb.
-- Issue #21618: The subprocess module could fail to close open fds that were
- inherited by the calling process and already higher than POSIX resource
- limits would otherwise allow. On systems with a functioning /proc/self/fd
- or /dev/fd interface the max is now ignored and all fds are closed.
+- Issue #20335: bytes constructor now raises TypeError when encoding or errors
+ is specified with non-string argument. Based on patch by Renaud Blanch.
-- Issue #21552: Fixed possible integer overflow of too long string lengths in
- the tkinter module on 64-bit platforms.
+- Issue #22834: If the current working directory ends up being set to a
+ non-existent directory then import will no longer raise FileNotFoundError.
-- Issue #14315: The zipfile module now ignores extra fields in the central
- directory that are too short to be parsed instead of letting a struct.unpack
- error bubble up as this "bad data" appears in many real world zip files in
- the wild and is ignored by other zip tools.
+- Issue #22869: Move the interpreter startup & shutdown code to a new
+ dedicated pylifecycle.c module
-- Issue #21402: tkinter.ttk now works when default root window is not set.
+- Issue #22847: Improve method cache efficiency.
-- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particulr
- it supports reverse() and negative indices. Original patch by Claudiu Popa.
+- Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff
+ bytes on a 32-bit platform.
-- Issue #18807: If copying (no symlinks) specified for a venv, then the python
- interpreter aliases (python, python3) are now created by copying rather than
- symlinking.
+- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant
+ dict insertion in debug mode.
-- Issue #14710: pkgutil.get_loader() no longer raises an exception when None is
- found in sys.modules.
+- Issue #22643: Fix integer overflow in Unicode case operations (upper, lower,
+ title, swapcase, casefold).
-- Issue #14710: pkgutil.find_loader() no longer raises an exception when a
- module doesn't exist.
+- Issue #17636: Circular imports involving relative imports are now
+ supported.
-- Issue #21481: Argparse equality and inequality tests now return
- NotImplemented when comparing to an unknown type.
+- Issue #22604: Fix assertion error in debug mode when dividing a complex
+ number by (nan+0j).
-- Issue #8743: Fix interoperability between set objects and the
- collections.Set() abstract base class.
+- Issue #21052: Do not raise ImportWarning when sys.path_hooks or sys.meta_path
+ are set to None.
-- Issue #13355: random.triangular() no longer fails with a ZeroDivisionError
- when low equals high.
+- Issue #16518: Use 'bytes-like object required' in error messages that
+ previously used the far more cryptic "'x' does not support the buffer
+ protocol.
-- Issue #21538: The plistlib module now supports loading of binary plist files
- when reference or offset size is not a power of two.
+- Issue #22470: Fixed integer overflow issues in "backslashreplace",
+ "xmlcharrefreplace", and "surrogatepass" error handlers.
-- Issue #21801: Validate that __signature__ is None or an instance of Signature.
+- Issue #22540: speed up `PyObject_IsInstance` and `PyObject_IsSubclass` in the
+ common case that the second argument has metaclass `type`.
-- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler
- due to possible uninitialized _config_vars.
+- Issue #18711: Add a new `PyErr_FormatV` function, similar to `PyErr_Format`
+ but accepting a `va_list` argument.
-- Issue #21323: Fix http.server to again handle scripts in CGI subdirectories,
- broken by the fix for security issue #19435. Patch by Zach Byrne.
+- Issue #22520: Fix overflow checking when generating the repr of a unicode
+ object.
-Extension Modules
------------------
+- Issue #22519: Fix overflow checking in PyBytes_Repr.
-- Issue #22176: Update the ctypes module's libffi to v3.1. This release
- adds support for the Linux AArch64 and POWERPC ELF ABIv2 little endian
- architectures.
+- Issue #22518: Fix integer overflow issues in latin-1 encoding.
-Build
------
+- Issue #16324: _charset parameter of MIMEText now also accepts
+ email.charset.Charset instances. Initial patch by Claude Paroz.
-- Issue #15661: python.org OS X installers are now distributed as signed
- installer packages compatible with the Gatekeeper security feature.
+- Issue #1764286: Fix inspect.getsource() to support decorated functions.
+ Patch by Claudiu Popa.
-- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and
- above. Patch by Zachary Turner.
+- Issue #18554: os.__all__ includes posix functions.
-- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/
- now display special message when and only when there are failures.
+- Issue #21391: Use os.path.abspath in the shutil module.
-- Issue #17095: Fix Modules/Setup *shared* support.
+- Issue #11471: avoid generating a JUMP_FORWARD instruction at the end of
+ an if-block if there is no else-clause. Original patch by Eugene Toder.
-- Issue #21811: Anticipated fixes to support OS X versions > 10.9.
+- Issue #22215: Now ValueError is raised instead of TypeError when str or bytes
+ argument contains not permitted null character or byte.
-- Issue #21166: Prevent possible segfaults and other random failures of
- python --generate-posix-vars in pybuilddir.txt build target.
+- Issue #22258: Fix the internal function set_inheritable() on Illumos.
+ This platform exposes the function ``ioctl(FIOCLEX)``, but calling it fails
+ with errno is ENOTTY: "Inappropriate ioctl for device". set_inheritable()
+ now falls back to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``).
-IDLE
-----
+- Issue #21389: Displaying the __qualname__ of the underlying function in the
+ repr of a bound method.
-- Issue #17390: Adjust Editor window title; remove 'Python',
- move version to end.
+- Issue #22206: Using pthread, PyThread_create_key() now sets errno to ENOMEM
+ and returns -1 (error) on integer overflow.
-- Issue #14105: Idle debugger breakpoints no longer disappear
- when inseting or deleting lines.
+- Issue #20184: Argument Clinic based signature introspection added for
+ 30 of the builtin functions.
-- Issue #17172: Turtledemo can now be run from Idle.
- Currently, the entry is on the Help menu, but it may move to Run.
- Patch by Ramchandra Apt and Lita Cho.
+- Issue #22116: C functions and methods (of the 'builtin_function_or_method'
+ type) can now be weakref'ed. Patch by Wei Wu.
-- Issue #21765: Add support for non-ascii identifiers to HyperParser.
+- Issue #22077: Improve index error messages for bytearrays, bytes, lists,
+ and tuples by adding 'or slices'. Added ', not <typename' for bytearrays.
+ Original patch by Claudiu Popa.
-- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav
- Heblikar.
+- Issue #20179: Apply Argument Clinic to bytes and bytearray.
+ Patch by Tal Einat.
-- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster.
+- Issue #22082: Clear interned strings in slotdefs.
-- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar.
+- Upgrade Unicode database to Unicode 7.0.0.
-- Issue #21686: add unittest for HyperParser. Original patch by Saimadhav
- Heblikar.
+- Issue #21897: Fix a crash with the f_locals attribute with closure
+ variables when frame.clear() has been called.
-- Issue #12387: Add missing upper(lower)case versions of default Windows key
- bindings for Idle so Caps Lock does not disable them. Patch by Roger Serwy.
+- Issue #21205: Add a new ``__qualname__`` attribute to generator, the
+ qualified name, and use it in the representation of a generator
+ (``repr(gen)``). The default name of the generator (``__name__`` attribute)
+ is now get from the function instead of the code. Use ``gen.gi_code.co_name``
+ to get the name of the code.
-- Issue #21695: Closing a Find-in-files output window while the search is
- still in progress no longer closes Idle.
+- Issue #21669: With the aid of heuristics in SyntaxError.__init__, the
+ parser now attempts to generate more meaningful (or at least more search
+ engine friendly) error messages when "exec" and "print" are used as
+ statements.
-- Issue #18910: Add unittest for textView. Patch by Phil Webster.
+- Issue #21642: If the conditional if-else expression, allow an integer written
+ with no space between itself and the ``else`` keyword (e.g. ``True if 42else
+ False``) to be valid syntax.
-- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar.
+- Issue #21523: Fix over-pessimistic computation of the stack effect of
+ some opcodes in the compiler. This also fixes a quadratic compilation
+ time issue noticeable when compiling code with a large number of "and"
+ and "or" operators.
-- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster.
+- Issue #21418: Fix a crash in the builtin function super() when called without
+ argument and without current frame (ex: embedded Python).
-Tests
------
+- Issue #21425: Fix flushing of standard streams in the interactive
+ interpreter.
-- Issue #22166: with the assistance of a new internal _codecs._forget_codec
- helping function, test_codecs now clears the encoding caches to avoid the
- appearance of a reference leak
+- Issue #21435: In rare cases, when running finalizers on objects in cyclic
+ trash a bad pointer dereference could occur due to a subtle flaw in
+ internal iteration logic.
-- Issue #22236: Tkinter tests now don't reuse default root window. New root
- window is created for every test class.
+- Issue #21377: PyBytes_Concat() now tries to concatenate in-place when the
+ first argument has a reference count of 1. Patch by Nikolaus Rath.
-- Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier
- de Gaye.
+- Issue #20355: -W command line options now have higher priority than the
+ PYTHONWARNINGS environment variable. Patch by Arfrever.
-- Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it
- now uses unittest test discovery to find its tests.
+- Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c.
-- Issue #22104: regrtest.py no longer holds a reference to the suite of tests
- loaded from test modules that don't define test_main().
+- Issue #20904: Support setting FPU precision on m68k.
-- Issue #22002: Added ``load_package_tests`` function to test.support and used
- it to implement/augment test discovery in test_asyncio, test_email,
- test_importlib, test_json, and test_tools.
+- Issue #21209: Fix sending tuples to custom generator objects with the yield
+ from syntax.
-- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks
- to William Orr.
+- Issue #21193: pow(a, b, c) now raises ValueError rather than TypeError when b
+ is negative. Patch by Josh Rosenberg.
-- Issue #21918: Converted test_tools from a module to a package containing
- separate test files for each tested script.
+- PEP 465 and Issue #21176: Add the '@' operator for matrix multiplication.
-- Issue #20155: Changed HTTP method names in failing tests in test_httpservers
- so that packet filtering software (specifically Windows Base Filtering Engine)
- does not interfere with the transaction semantics expected by the tests.
+- Issue #21134: Fix segfault when str is called on an uninitialized
+ UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object.
-- Issue #19493: Refactored the ctypes test package to skip tests explicitly
- rather than silently.
+- Issue #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by
+ Andreas Schwab.
-- Issue #18492: All resources are now allowed when tests are not run by
- regrtest.py.
+- Issue #20929: Add a type cast to avoid shifting a negative number.
-- Issue #21634: Fix pystone micro-benchmark: use floor division instead of true
- division to benchmark integers instead of floating point numbers. Set pystone
- version to 1.2. Patch written by Lennart Regebro.
+- Issue #20731: Properly position in source code files even if they
+ are opened in text mode. Patch by Serhiy Storchaka.
-- Issue #21605: Added tests for Tkinter images.
+- Issue #20637: Key-sharing now also works for instance dictionaries of
+ subclasses. Patch by Peter Ingebretson.
-- Issue #21493: Added test for ntpath.expanduser(). Original patch by
- Claudiu Popa.
+- Issue #8297: Attributes missing from modules now include the module name
+ in the error text. Original patch by ysj.ray.
-- Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok.
+- Issue #19995: %c, %o, %x, and %X now raise TypeError on non-integer input.
-- Issue #21522: Added Tkinter tests for Listbox.itemconfigure(),
- PanedWindow.paneconfigure(), and Menu.entryconfigure().
+- Issue #19655: The ASDL parser - used by the build process to generate code for
+ managing the Python AST in C - was rewritten. The new parser is self contained
+ and does not require to carry long the spark.py parser-generator library;
+ spark.py was removed from the source base.
-Documentation
--------------
+- Issue #12546: Allow \x00 to be used as a fill character when using str, int,
+ float, and complex __format__ methods.
-- Issue #21777: The binary sequence methods on bytes and bytearray are now
- documented explicitly, rather than assuming users will be able to derive
- the expected behaviour from the behaviour of the corresponding str methods.
+- Issue #20480: Add ipaddress.reverse_pointer. Patch by Leon Weber.
-Windows
--------
+- Issue #13598: Modify string.Formatter to support auto-numbering of
+ replacement fields. It now matches the behavior of str.format() in
+ this regard. Patches by Phil Elson and Ramchandra Apte.
-- Issue #21671, #22160, CVE-2014-0224: The bundled version of OpenSSL has been
- updated to 1.0.1i.
+- Issue #8931: Make alternate formatting ('#') for type 'c' raise an
+ exception. In versions prior to 3.5, '#' with 'c' had no effect. Now
+ specifying it is an error. Patch by Torsten Landschoff.
-- Issue #10747: Use versioned labels in the Windows start menu.
- Patch by Olive Kilburn.
+- Issue #23165: Perform overflow checks before allocating memory in the
+ _Py_char2wchar function.
-Tools/Demos
------------
+Library
+-------
-- Issue #22201: Command-line interface of the zipfile module now correctly
- extracts ZIP files with directory entries. Patch by Ryan Wilson.
+- Issue #23399: pyvenv creates relative symlinks where possible.
-- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3.
- Patch by Zachary Ware.
+- Issue #20289: cgi.FieldStorage() now supports the context management
+ protocol.
-- Issue #21629: Fix Argument Clinic's "--converters" feature.
+- Issue #13128: Print response headers for CONNECT requests when debuglevel
+ > 0. Patch by Demian Brecht.
+- Issue #15381: Optimized io.BytesIO to make less allocations and copyings.
-What's New in Python 3.4.1?
-===========================
+- Issue #22818: Splitting on a pattern that could match an empty string now
+ raises a warning. Patterns that can only match empty strings are now
+ rejected.
-Release date: 2014-05-18
+- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to
+ prevent corrupting exported buffer.
-Core and Builtins
------------------
+- Issue #23326: Removed __ne__ implementations. Since fixing default __ne__
+ implementation in issue #21408 they are redundant.
-- Issue #21418: Fix a crash in the builtin function super() when called without
- argument and without current frame (ex: embedded Python).
+- Issue #23363: Fix possible overflow in itertools.permutations.
-- Issue #21425: Fix flushing of standard streams in the interactive
- interpreter.
+- Issue #23364: Fix possible overflow in itertools.product.
-- Issue #21435: In rare cases, when running finalizers on objects in cyclic
- trash a bad pointer dereference could occur due to a subtle flaw in
- internal iteration logic.
+- Issue #23366: Fixed possible integer overflow in itertools.combinations.
-Library
--------
+- Issue #23369: Fixed possible integer overflow in
+ _json.encode_basestring_ascii.
-- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial
- shape.
+- Issue #23353: Fix the exception handling of generators in
+ PyEval_EvalFrameEx(). At entry, save or swap the exception state even if
+ PyEval_EvalFrameEx() is called with throwflag=0. At exit, the exception state
+ is now always restored or swapped, not only if why is WHY_YIELD or
+ WHY_RETURN. Patch co-written with Antoine Pitrou.
-- Issue #20998: Fixed re.fullmatch() of repeated single character pattern
- with ignore case. Original patch by Matthew Barnett.
+- Issue #14099: Restored support of writing ZIP files to tellable but
+ non-seekable streams.
-- Issue #21075: fileinput.FileInput now reads bytes from standard stream if
- binary mode is specified. Patch by Sam Kimbrel.
+- Issue #14099: Writing to ZipFile and reading multiple ZipExtFiles is
+ threadsafe now.
-- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a
- flush() on the underlying binary stream. Patch by akira.
+- Issue #19361: JSON decoder now raises JSONDecodeError instead of ValueError.
-- Issue #21470: Do a better job seeding the random number generator by
- using enough bytes to span the full state space of the Mersenne Twister.
+- Issue #18518: timeit now rejects statements which can't be compiled outside
+ a function or a loop (e.g. "return" or "break").
-- Issue #21398: Fix an unicode error in the pydoc pager when the documentation
- contains characters not encodable to the stdout encoding.
+- Issue #23094: Fixed readline with frames in Python implementation of pickle.
-Tests
------
+- Issue #23268: Fixed bugs in the comparison of ipaddress classes.
-- Issue #17756: Fix test_code test when run from the installed location.
+- Issue #21408: Removed incorrect implementations of __ne__() which didn't
+ returned NotImplemented if __eq__() returned NotImplemented. The default
+ __ne__() now works correctly.
-- Issue #17752: Fix distutils tests when run from the installed location.
+- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed)
+ headers with no key rather than assuming the body has started.
-IDLE
-----
+- Issue #20188: Support Application-Layer Protocol Negotiation (ALPN) in the ssl
+ module.
-- Issue #18104: Add idlelib/idle_test/htest.py with a few sample tests to begin
- consolidating and improving human-validated tests of Idle. Change other files
- as needed to work with htest. Running the module as __main__ runs all tests.
+- Issue #23133: Pickling of ipaddress objects now produces more compact and
+ portable representation.
+- Issue #23248: Update ssl error codes from latest OpenSSL git master.
-What's New in Python 3.4.1rc1?
-==============================
+- Issue #23266: Much faster implementation of ipaddress.collapse_addresses()
+ when there are many non-consecutive addresses.
-Release date: 2014-05-05
+- Issue #23098: 64-bit dev_t is now supported in the os module.
-Core and Builtins
------------------
+- Issue #21817: When an exception is raised in a task submitted to a
+ ProcessPoolExecutor, the remote traceback is now displayed in the
+ parent process. Patch by Claudiu Popa.
-- Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c.
+- Issue #15955: Add an option to limit output size when decompressing LZMA
+ data. Patch by Nikolaus Rath and Martin Panter.
-- Issue #21209: Fix sending tuples to custom generator objects with the yield
- from syntax.
+- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure"
+ as they are written in the standard.
-- Issue #21134: Fix segfault when str is called on an uninitialized
- UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object.
+- Issue #23063: In the disutils' check command, fix parsing of reST with code or
+ code-block directives.
-- Issue #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by
- Andreas Schwab.
+- Issue #23209, #23225: selectors.BaseSelector.get_key() now raises a
+ RuntimeError if the selector is closed. And selectors.BaseSelector.close()
+ now clears its internal reference to the selector mapping to break a
+ reference cycle. Initial patch written by Martin Richard.
-- Issue #20929: Add a type cast to avoid shifting a negative number.
+- Issue #17911: Provide a way to seed the linecache for a PEP-302 module
+ without actually loading the code.
-- Issue #20731: Properly position in source code files even if they
- are opened in text mode. Patch by Serhiy Storchaka.
+- Issue #17911: Provide a new object API for traceback, including the ability
+ to not lookup lines at all until the traceback is actually rendered, without
+ any trace of the original objects being kept alive.
-- Issue #20637: Key-sharing now also works for instance dictionaries of
- subclasses. Patch by Peter Ingebretson.
+- Issue #19777: Provide a home() classmethod on Path objects. Contributed
+ by Victor Salgado and Mayank Tripathi.
-- Issue #12546: Allow \x00 to be used as a fill character when using str, int,
- float, and complex __format__ methods.
+- Issue #23206: Make ``json.dumps(..., ensure_ascii=False)`` as fast as the
+ default case of ``ensure_ascii=True``. Patch by Naoki Inada.
-- Issue #13598: Modify string.Formatter to support auto-numbering of
- replacement fields. It now matches the behavior of str.format() in
- this regard. Patches by Phil Elson and Ramchandra Apte.
+- Issue #23185: Add math.inf and math.nan constants.
-Library
--------
+- Issue #23186: Add ssl.SSLObject.shared_ciphers() and
+ ssl.SSLSocket.shared_ciphers() to fetch the client's list ciphers sent at
+ handshake.
-- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0.
- In porting to Argument Clinic, the first two arguments were reversed.
+- Issue #23143: Remove compatibility with OpenSSLs older than 0.9.8.
-- Issue #21469: Reduced the risk of false positives in robotparser by
- checking to make sure that robots.txt has been read or does not exist
- prior to returning True in can_fetch().
+- Issue #23132: Improve performance and introspection support of comparison
+ methods created by functool.total_ordering.
-- Issue #21321: itertools.islice() now releases the reference to the source
- iterator when the slice is exhausted. Patch by Anton Afanasyev.
+- Issue #19776: Add a expanduser() method on Path objects.
-- Issue #9815: assertRaises now tries to clear references to local variables
- in the exception's traceback.
+- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and
+ fragment when it redirects to add a trailing slash.
-- Issue #13204: Calling sys.flags.__new__ would crash the interpreter,
- now it raises a TypeError.
+- Issue #21793: Added http.HTTPStatus enums (i.e. HTTPStatus.OK,
+ HTTPStatus.NOT_FOUND). Patch by Demian Brecht.
-- Issue #19385: Make operations on a closed dbm.dumb database always raise the
- same exception.
+- Issue #23093: In the io, module allow more operations to work on detached
+ streams.
-- Issue #21207: Detect when the os.urandom cached fd has been closed or
- replaced, and open it anew.
+- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol
+ version.
-- Issue #21291: subprocess's Popen.wait() is now thread safe so that
- multiple threads may be calling wait() or poll() on a Popen instance
- at the same time without losing the Popen.returncode value.
+- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(),
+ instead of reading /dev/urandom, to get pseudo-random bytes.
-- Issue #21127: Path objects can now be instantiated from str subclass
- instances (such as ``numpy.str_``).
+- Issue #19104: pprint now produces evaluable output for wrapped strings.
-- Issue #15002: urllib.response object to use _TemporaryFileWrapper (and
- _TemporaryFileCloser) facility. Provides a better way to handle file
- descriptor close. Patch contributed by Christian Theune.
+- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter.
-- Issue #12220: mindom now raises a custom ValueError indicating it doesn't
- support spaces in URIs instead of letting a 'split' ValueError bubble up.
+- Issue #22783: Pickling now uses the NEWOBJ opcode instead of the NEWOBJ_EX
+ opcode if possible.
-- Issue #21239: patch.stopall() didn't work deterministically when the same
- name was patched more than once.
+- Issue #15513: Added a __sizeof__ implementation for pickle classes.
-- Issue #21222: Passing name keyword argument to mock.create_autospec now
- works.
+- Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can
+ produce more compact result and no longer produces invalid output if input
+ data contains MEMOIZE opcodes together with PUT or BINPUT opcodes.
-- Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX.
+- Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port
+ value in the host header was set to "None". Patch by Demian Brecht.
-- Issue #17498: Some SMTP servers disconnect after certain errors, violating
- strict RFC conformance. Instead of losing the error code when we issue the
- subsequent RSET, smtplib now returns the error code and defers raising the
- SMTPServerDisconnected error until the next command is issued.
+- Issue #23016: A warning no longer produces an AttributeError when the program
+ is run with pythonw.exe.
-- Issue #17826: setting an iterable side_effect on a mock function created by
- create_autospec now works. Patch by Kushal Das.
+- Issue #21775: shutil.copytree(): fix crash when copying to VFAT. An exception
+ handler assumed that that OSError objects always have a 'winerror' attribute.
+ That is not the case, so the exception handler itself raised AttributeError
+ when run on Linux (and, presumably, any other non-Windows OS).
+ Patch by Greg Ward.
-- Issue #7776: Fix ``Host:`` header and reconnection when using
- http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath.
+- Issue #1218234: Fix inspect.getsource() to load updated source of
+ reloaded module. Initial patch by Berker Peksag.
-- Issue #20968: unittest.mock.MagicMock now supports division.
- Patch by Johannes Baiter.
+- Issue #21740: Support wrapped callables in doctest. Patch by Claudiu Popa.
-- Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second
- parameter. Bug reported by Guido Vranken.
+- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no
+ FD is registered.
-- Issue #21169: getpass now handles non-ascii characters that the
- input stream encoding cannot encode by re-encoding using the
- replace error handler.
+- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the
+ context's check_hostname attribute over the *check_hostname* parameter.
-- Issue #21171: Fixed undocumented filter API of the rot13 codec.
- Patch by Berker Peksag.
+- Issue #22696: Add function :func:`sys.is_finalizing` to know about
+ interpreter shutdown.
-- Issue #21172: isinstance check relaxed from dict to collections.Mapping.
+- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode
+ will return. This resolves CVE-2013-1753.
-- Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError
- if path and sock are specified at the same time.
+- Issue #14099: ZipFile.open() no longer reopen the underlying file. Objects
+ returned by ZipFile.open() can now operate independently of the ZipFile even
+ if the ZipFile was created by passing in a file-like object as the first
+ argument to the constructor.
-- Issue #21149: Improved thread-safety in logging cleanup during interpreter
- shutdown. Thanks to Devin Jeanpierre for the patch.
+- Issue #22966: Fix __pycache__ pyc file name clobber when pyc_compile is
+ asked to compile a source file containing multiple dots in the source file
+ name.
-- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a
- TypeError if the second argument is not a string or compiled regex.
+- Issue #21971: Update turtledemo doc and add module to the index.
-- Issue #21058: Fix a leak of file descriptor in
- :func:`tempfile.NamedTemporaryFile`, close the file descriptor if
- :func:`io.open` fails
+- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails.
+ Original patch by Martin Panter.
-- Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing.
+- Issue #22407: Deprecated the use of re.LOCALE flag with str patterns or
+ re.ASCII. It was newer worked.
-- Issue #21013: Enhance ssl.create_default_context() when used for server side
- sockets to provide better security by default.
+- Issue #22902: The "ip" command is now used on Linux to determine MAC address
+ in uuid.getnode(). Pach by Bruno Cauet.
-- Issue #20633: Replace relative import by absolute import.
+- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor.
-- Issue #20980: Stop wrapping exception when using ThreadPool.
+- Issue #22389: Add contextlib.redirect_stderr().
-- Issue #21082: In os.makedirs, do not set the process-wide umask. Note this
- changes behavior of makedirs when exist_ok=True.
+- Issue #21356: Make ssl.RAND_egd() optional to support LibreSSL. The
+ availability of the function is checked during the compilation. Patch written
+ by Bernard Spil.
-- Issue #20990: Fix issues found by pyflakes for multiprocessing.
+- Issue #22915: SAX parser now supports files opened with file descriptor or
+ bytes path.
-- Issue #21015: SSL contexts will now automatically select an elliptic
- curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise
- default to "prime256v1".
+- Issue #22609: Constructors and update methods of mapping classes in the
+ collections module now accept the self keyword argument.
-- Issue #20995: Enhance default ciphers used by the ssl module to enable
- better security an prioritize perfect forward secrecy.
+- Issue #22940: Add readline.append_history_file.
-- Issue #20884: Don't assume that __file__ is defined on importlib.__init__.
+- Issue #19676: Added the "namereplace" error handler.
-- Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests.
+- Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler.
-- Issue #20879: Delay the initialization of encoding and decoding tables for
- base32, ascii85 and base85 codecs in the base64 module, and delay the
- initialization of the unquote_to_bytes() table of the urllib.parse module, to
- not waste memory if these modules are not used.
-
-- Issue #19157: Include the broadcast address in the usuable hosts for IPv6
- in ipaddress.
+- Issue #22921: Allow SSLContext to take the *hostname* parameter even if
+ OpenSSL doesn't support SNI.
-- Issue #11599: When an external command (e.g. compiler) fails, distutils now
- prints out the whole command line (instead of just the command name) if the
- environment variable DISTUTILS_DEBUG is set.
+- Issue #22894: TestCase.subTest() would cause the test suite to be stopped
+ when in failfast mode, even in the absence of failures.
-- Issue #4931: distutils should not produce unhelpful "error: None" messages
- anymore. distutils.util.grok_environment_error is kept but doc-deprecated.
+- Issue #22796: HTTP cookie parsing is now stricter, in order to protect
+ against potential injection attacks.
-- Issue #20875: Prevent possible gzip "'read' is not defined" NameError.
- Patch by Claudiu Popa.
+- Issue #22370: Windows detection in pathlib is now more robust.
-- Issue #11558: ``email.message.Message.attach`` now returns a more
- useful error message if ``attach`` is called on a message for which
- ``is_multipart`` is False.
+- Issue #22841: Reject coroutines in asyncio add_signal_handler().
+ Patch by Ludovic.Gasc.
-- Issue #20283: RE pattern methods now accept the string keyword parameters
- as documented. The pattern and source keyword parameters are left as
- deprecated aliases.
+- Issue #19494: Added urllib.request.HTTPBasicPriorAuthHandler. Patch by
+ Matej Cepl.
-- Issue #20778: Fix modulefinder to work with bytecode-only modules.
+- Issue #22578: Added attributes to the re.error class.
-- Issue #20791: copy.copy() now doesn't make a copy when the input is
- a bytes object. Initial patch by Peter Otten.
+- Issue #22849: Fix possible double free in the io.TextIOWrapper constructor.
-- Issue #19748: On AIX, time.mktime() now raises an OverflowError for year
- outsize range [1902; 2037].
+- Issue #12728: Different Unicode characters having the same uppercase but
+ different lowercase are now matched in case-insensitive regular expressions.
-- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for
- missing keyword-only arguments. Patch by Jeremiah Lowin.
+- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian
+ platforms.
-- Issue #20817: Fix inspect.getcallargs() to fail correctly if more
- than 3 arguments are missing. Patch by Jeremiah Lowin.
+- Issue #21650: Add an `--sort-keys` option to json.tool CLI.
-- Issue #6676: Ensure a meaningful exception is raised when attempting
- to parse more than one XML document per pyexpat xmlparser instance.
- (Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with
- suggested wording by David Gutteridge)
+- Issue #22824: Updated reprlib output format for sets to use set literals.
+ Patch contributed by Berker Peksag.
-- Issue #21117: Fix inspect.signature to better support functools.partial.
- Due to the specifics of functools.partial implementation,
- positional-or-keyword arguments passed as keyword arguments become
- keyword-only.
+- Issue #22824: Updated reprlib output format for arrays to display empty
+ arrays without an unnecessary empty list. Suggested by Serhiy Storchaka.
-- Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug
- in yield-from implementation in CPythons prior to 3.4.1.
+- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x.
+ Based on patch by Martin Panter.
-- asyncio: Add gi_{frame,running,code} properties to CoroWrapper
- (upstream issue #163).
+- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat.
+ Based on patch by Aivars Kalvāns.
-- Issue #21311: Avoid exception in _osx_support with non-standard compiler
- configurations. Patch by John Szakmeister.
+- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments.
-- Issue #11571: Ensure that the turtle window becomes the topmost window
- when launched on OS X.
+- Issue #22417: Verify certificates by default in httplib (PEP 476).
-Extension Modules
------------------
+- Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2
+ and above. Patch by Tim Graham.
-- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd.
+- Issue #22776: Brought excluded code into the scope of a try block in
+ SysLogHandler.emit().
-- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject
- (and friends).
+- Issue #22665: Add missing get_terminal_size and SameFileError to
+ shutil.__all__.
-IDLE
-----
+- Issue #6623: Remove deprecated Netrc class in the ftplib module. Patch by
+ Matt Chaput.
-- Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation.
+- Issue #17381: Fixed handling of case-insensitive ranges in regular
+ expressions.
-- Issue #21284: Paragraph reformat test passes after user changes reformat width.
+- Issue #22410: Module level functions in the re module now cache compiled
+ locale-dependent regular expressions taking into account the locale.
-- Issue #17654: Ensure IDLE menus are customized properly on OS X for
- non-framework builds and for all variants of Tk.
+- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.)
+ now return False when the underlying stat call raises NotADirectoryError.
-Build
------
+- Issue #8876: distutils now falls back to copying files when hard linking
+ doesn't work. This allows use with special filesystems such as VirtualBox
+ shared folders.
-- The Windows build now includes OpenSSL 1.0.1g
+- Issue #22217: Implemented reprs of classes in the zipfile module.
-- Issue #21285: Refactor and fix curses configure check to always search
- in a ncursesw directory.
+- Issue #22457: Honour load_tests in the start_dir of discovery.
-- Issue #15234: For BerkelyDB and Sqlite, only add the found library and
- include directories if they aren't already being searched. This avoids
- an explicit runtime library dependency.
+- Issue #18216: gettext now raises an error when a .mo file has an
+ unsupported major version number. Patch by Aaron Hill.
-- Issue #20644: OS X installer build support for documentation build changes
- in 3.4.1: assume externally supplied sphinx-build is available in /usr/bin.
+- Issue #13918: Provide a locale.delocalize() function which can remove
+ locale-specific number formatting from a string representing a number,
+ without then converting it to a specific type. Patch by Cédric Krier.
-C API
------
+- Issue #22676: Make the pickling of global objects which don't have a
+ __module__ attribute less slow.
-- Issue #20942: PyImport_ImportFrozenModuleObject() no longer sets __file__ to
- match what importlib does; this affects _frozen_importlib as well as any
- module loaded using imp.init_frozen().
+- Issue #18853: Fixed ResourceWarning in shlex.__nain__.
-Documentation
--------------
+- Issue #9351: Defaults set with set_defaults on an argparse subparser
+ are no longer ignored when also set on the parent parser.
-- Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make
- it much more comparable to ``Doc/Makefile``.
+- Issue #7559: unittest test loading ImportErrors are reported as import errors
+ with their import exception rather than as attribute errors after the import
+ has already failed.
-- Issue #21043: Remove the recommendation for specific CA organizations and to
- mention the ability to load the OS certificates.
+- Issue #19746: Make it possible to examine the errors from unittest
+ discovery without executing the test suite. The new `errors` attribute
+ on TestLoader exposes these non-fatal errors encountered during discovery.
-- Issue #20765: Add missing documentation for PurePath.with_name() and
- PurePath.with_suffix().
+- Issue #21991: Make email.headerregistry's header 'params' attributes
+ be read-only (MappingProxyType). Previously the dictionary was modifiable
+ but a new one was created on each access of the attribute.
-- Issue #19407: New package installation and distribution guides based on
- the Python Packaging Authority tools. Existing guides have been retained
- as legacy links from the distutils docs, as they still contain some
- required reference material for tool developers that isn't recorded
- anywhere else.
+- Issue #22638: SSLv3 is now disabled throughout the standard library.
+ It can still be enabled by instantiating a SSLContext manually.
-- Issue #19697: Document cases where __main__.__spec__ is None.
+- Issue #22641: In asyncio, the default SSL context for client connections
+ is now created using ssl.create_default_context(), for stronger security.
-Tests
------
+- Issue #17401: Include closefd in io.FileIO repr.
-- Issue #18604: Consolidated checks for GUI availability. All platforms now
- at least check whether Tk can be instantiated when the GUI resource is
- requested.
+- Issue #21338: Add silent mode for compileall. quiet parameters of
+ compile_{dir, file, path} functions now have a multilevel value. Also,
+ -q option of the CLI now have a multilevel value. Patch by Thomas Kluyver.
-- Issue #21275: Fix a socket test on KFreeBSD.
+- Issue #20152: Convert the array and cmath modules to Argument Clinic.
-- Issue #21223: Pass test_site/test_startup_imports when some of the extensions
- are built as builtins.
+- Issue #18643: Add socket.socketpair() on Windows.
-- Issue #20635: Added tests for Tk geometry managers.
+- Issue #22435: Fix a file descriptor leak when SocketServer bind fails.
-- Add test case for freeze.
+- Issue #13096: Fixed segfault in CTypes POINTER handling of large
+ values.
-- Issue #20743: Fix a reference leak in test_tcl.
+- Issue #11694: Raise ConversionError in xdrlib as documented. Patch
+ by Filip Gruszczyński and Claudiu Popa.
-- Issue #21097: Move test_namespace_pkgs into test_importlib.
+- Issue #19380: Optimized parsing of regular expressions.
-- Issue #20939: Avoid various network test failures due to new
- redirect of http://www.python.org/ to https://www.python.org:
- use http://www.example.com instead.
+- Issue #1519638: Now unmatched groups are replaced with empty strings in re.sub()
+ and re.subn().
-- Issue #20668: asyncio tests no longer rely on tests.txt file.
- (Patch by Vajrasky Kok)
+- Issue #18615: sndhdr.what/whathdr now return a namedtuple.
-- Issue #21093: Prevent failures of ctypes test_macholib on OS X if a
- copy of libz exists in $HOME/lib or /usr/local/lib.
+- Issue #22462: Fix pyexpat's creation of a dummy frame to make it
+ appear in exception tracebacks.
-Tools/Demos
------------
+- Issue #21965: Add support for in-memory SSL to the ssl module. Patch
+ by Geert Jansen.
-- Add support for ``yield from`` to 2to3.
+- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called
+ with an iterator alive.
-- Add support for the PEP 465 matrix multiplication operator to 2to3.
+- Issue #11866: Eliminated race condition in the computation of names
+ for new threads.
-- Issue #16047: Fix module exception list and __file__ handling in freeze.
- Patch by Meador Inge.
+- Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules
+ is mutated while iterating. Patch by Olivier Grisel.
-- Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge.
+- Issue #11271: concurrent.futures.Executor.map() now takes a *chunksize*
+ argument to allow batching of tasks in child processes and improve
+ performance of ProcessPoolExecutor. Patch by Dan O'Reilly.
-- Issue #20535: PYTHONWARNING no longer affects the run_tests.py script.
- Patch by Arfrever Frehtes Taifersar Arahesis.
+- Issue #21883: os.path.join() and os.path.relpath() now raise a TypeError with
+ more helpful error message for unsupported or mismatched types of arguments.
+- Issue #22219: The zipfile module CLI now adds entries for directories
+ (including empty directories) in ZIP file.
-What's New in Python 3.4.0?
-===========================
+- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the
+ environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows.
-Release date: 2014-03-16
+- Issue #22508: The email.__version__ variable has been removed; the email
+ code is no longer shipped separately from the stdlib, and __version__
+ hasn't been updated in several releases.
-Library
--------
+- Issue #20076: Added non derived UTF-8 aliases to locale aliases table.
-- Issue #20939: Fix test_geturl failure in test_urllibnet due to
- new redirect of http://www.python.org/ to https://www.python.org.
+- Issue #20079: Added locales supported in glibc 2.18 to locale alias table.
-Documentation
--------------
+- Issue #20218: Added convenience methods read_text/write_text and read_bytes/
+ write_bytes to pathlib.Path objects.
-- Merge in all documentation changes since branching 3.4.0rc1.
+- Issue #22437: Number of capturing groups in regular expression is no longer
+ limited by 100.
+- Issue #17442: InteractiveInterpreter now displays the full chained traceback
+ in its showtraceback method, to match the built in interactive interpreter.
-What's New in Python 3.4.0 release candidate 3?
-===============================================
+- Issue #23392: Added tests for marshal C API that works with FILE*.
-Release date: 2014-03-09
+
-Core and Builtins
------------------
+- Issue #10510: distutils register and upload methods now use HTML standards
+ compliant CRLF line endings.
-- Issue #20786: Fix signatures for dict.__delitem__ and
- property.__delete__ builtins.
+- Issue #9850: Fixed macpath.join() for empty first component. Patch by
+ Oleg Oshmyan.
-Library
--------
+- Issue #5309: distutils' build and build_ext commands now accept a ``-j``
+ option to enable parallel building of extension modules.
-- Issue #20839: Don't trigger a DeprecationWarning in the still supported
- pkgutil.get_loader() API when __loader__ isn't set on a module (nor
- when pkgutil.find_loader() is called directly).
+- Issue #22448: Improve canceled timer handles cleanup to prevent
+ unbound memory usage. Patch by Joshua Moore-Oliva.
-Build
------
+- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when
+ used in the with statement in generator.
-- Issue #14512: Launch pydoc -b instead of pydocgui.pyw on Windows.
+- Issue #22362: Forbidden ambiguous octal escapes out of range 0-0o377 in
+ regular expressions.
-- Issue #20748: Uninstalling pip does not leave behind the pyc of
- the uninstaller anymore.
+- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS
+ directory attributes.
-- Issue #20568: The Windows installer now installs the unversioned ``pip``
- command in addition to the versioned ``pip3`` and ``pip3.4`` commands.
+- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory
+ records if allowZip64 is false.
-- Issue #20757: The ensurepip helper for the Windows uninstaller now skips
- uninstalling pip (rather than failing) if the user has updated pip to a
- different version from the one bundled with ensurepip.
+- Issue #22278: Fix urljoin problem with relative urls, a regression observed
+ after changes to issue22118 were submitted.
-- Issue #20465: Update OS X and Windows installer builds to use
- SQLite 3.8.3.1.
+- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re
+ module. Removed trailing spaces in debugging output.
+- Issue #22423: Unhandled exception in thread no longer causes unhandled
+ AttributeError when sys.stderr is None.
-What's New in Python 3.4.0 release candidate 2?
-===============================================
+- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects
+ line buffering, rather than block buffering. Patch by Akira Li.
-Release date: 2014-02-23
+- Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now
+ a method.
-Core and Builtins
------------------
+- Issue #21079: Fix email.message.EmailMessage.is_attachment to return the
+ correct result when the header has parameters as well as a value.
-- Issue #20625: Parameter names in __annotations__ were not mangled properly.
- Discovered by Jonas Wielicki, patch by Yury Selivanov.
+- Issue #22247: Add NNTPError to nntplib.__all__.
-- Issue #20261: In pickle, lookup __getnewargs__ and __getnewargs_ex__ on the
- type of the object.
+- Issue #22366: urllib.request.urlopen will accept a context object
+ (SSLContext) as an argument which will then used be for HTTPS connection.
+ Patch by Alex Gaynor.
-- Issue #20619: Give the AST nodes of keyword-only arguments a column and line
- number.
+- Issue #4180: The warnings registries are now reset when the filters
+ are modified.
-- Issue #20526: Revert changes of issue #19466 which introduces a regression:
- don't clear anymore the state of Python threads early during the Python
- shutdown.
+- Issue #22419: Limit the length of incoming HTTP request in wsgiref server to
+ 65536 bytes and send a 414 error code for higher lengths. Patch contributed
+ by Devin Cook.
-Library
--------
+- Lax cookie parsing in http.cookies could be a security issue when combined
+ with non-standard cookie handling in some Web browsers. Reported by
+ Sergey Bobrov.
-- Issue #20710: The pydoc summary line no longer displays the "self" parameter
- for bound methods.
+- Issue #20537: logging methods now accept an exception instance as well as a
+ Boolean value or exception tuple. Thanks to Yury Selivanov for the patch.
-- Issue #20566: Change asyncio.as_completed() to use a Queue, to
- avoid O(N**2) behavior.
+- Issue #22384: An exception in Tkinter callback no longer crashes the program
+ when it is run with pythonw.exe.
-- Issue #20704: Implement new debug API in asyncio. Add new methods
- BaseEventLoop.set_debug() and BaseEventLoop.get_debug().
- Add support for setting 'asyncio.tasks._DEBUG' variable with
- 'PYTHONASYNCIODEBUG' environment variable.
+- Issue #22168: Prevent turtle AttributeError with non-default Canvas on OS X.
-- asyncio: Refactoring and fixes: BaseEventLoop.sock_connect() raises an
- error if the address is not resolved; use __slots__ in Handle and
- TimerHandle; as_completed() and wait() raise TypeError if the passed
- list of Futures is a single Future; call_soon() and other 'call_*()'
- functions raise TypeError if the passed callback is a coroutine
- function; _ProactorBasePipeTransport uses _FlowControlMixin;
- WriteTransport.set_write_buffer_size() calls _maybe_pause_protocol()
- to consider pausing receiving if the watermark limits have changed;
- fix _check_resolved_address() for IPv6 address; and other minor
- improvements, along with multiple documentation updates.
+- Issue #21147: sqlite3 now raises an exception if the request contains a null
+ character instead of truncate it. Based on patch by Victor Stinner.
-- Issue #20684: Fix inspect.getfullargspec() to not to follow __wrapped__
- chains. Make its behaviour consistent with bound methods first argument.
- Patch by Nick Coghlan and Yury Selivanov.
+- Issue #13968: The glob module now supports recursive search in
+ subdirectories using the "**" pattern.
-- Issue #20681: Add new error handling API in asyncio. New APIs:
- loop.set_exception_handler(), loop.default_exception_handler(), and
- loop.call_exception_handler().
+- Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with
+ empty string or tuple argument.
-- Issue #20673: Implement support for UNIX Domain Sockets in asyncio.
- New APIs: loop.create_unix_connection(), loop.create_unix_server(),
- streams.open_unix_connection(), and streams.start_unix_server().
+- Issue #21951: Tkinter now most likely raises MemoryError instead of crash
+ if the memory allocation fails.
-- Issue #20616: Add a format() method to tracemalloc.Traceback.
+- Issue #22338: Fix a crash in the json module on memory allocation failure.
-- Issue #19744: the ensurepip installation step now just prints a warning to
- stderr rather than failing outright if SSL/TLS is unavailable. This allows
- local installation of POSIX builds without SSL/TLS support.
+- Issue #12410: imaplib.IMAP4 now supports the context management protocol.
+ Original patch by Tarek Ziadé.
-- Issue #20594: Avoid name clash with the libc function posix_close.
+- Issue #21270: We now override tuple methods in mock.call objects so that
+ they can be used as normal call attributes.
-Build
------
+- Issue #16662: load_tests() is now unconditionally run when it is present in
+ a package's __init__.py. TestLoader.loadTestsFromModule() still accepts
+ use_load_tests, but it is deprecated and ignored. A new keyword-only
+ attribute `pattern` is added and documented. Patch given by Robert Collins,
+ tweaked by Barry Warsaw.
-- Issue #20641: Run MSI custom actions (pip installation, pyc compilation)
- with the NoImpersonate flag, to support elevated execution (UAC).
+- Issue #22226: First letter no longer is stripped from the "status" key in
+ the result of Treeview.heading().
-- Issue #20221: Removed conflicting (or circular) hypot definition when
- compiled with VS 2010 or above. Initial patch by Tabrez Mohammed.
+- Issue #19524: Fixed resource leak in the HTTP connection when an invalid
+ response is received. Patch by Martin Panter.
-- Issue #20609: Restored the ability to build 64-bit Windows binaries on
- 32-bit Windows, which was broken by the change in issue #19788.
+- Issue #20421: Add a .version() method to SSL sockets exposing the actual
+ protocol version in use.
+- Issue #19546: configparser exceptions no longer expose implementation details.
+ Chained KeyErrors are removed, which leads to cleaner tracebacks. Patch by
+ Claudiu Popa.
-What's New in Python 3.4.0 release candidate 1?
-===============================================
+- Issue #22051: turtledemo no longer reloads examples to re-run them.
+ Initialization of variables and gui setup should be done in main(),
+ which is called each time a demo is run, but not on import.
-Release date: 2014-02-10
+- Issue #21933: Turtledemo users can change the code font size with a menu
+ selection or control(command) '-' or '+' or control-mousewheel.
+ Original patch by Lita Cho.
-Core and Builtins
------------------
+- Issue #21597: The separator between the turtledemo text pane and the drawing
+ canvas can now be grabbed and dragged with a mouse. The code text pane can
+ be widened to easily view or copy the full width of the text. The canvas
+ can be widened on small screens. Original patches by Jan Kanis and Lita Cho.
-- Issue #19255: The builtins module is restored to initial value before
- cleaning other modules. The sys and builtins modules are cleaned last.
+- Issue #18132: Turtledemo buttons no longer disappear when the window is
+ shrunk. Original patches by Jan Kanis and Lita Cho.
-- Issue #20588: Make Python-ast.c C89 compliant.
+- Issue #22043: time.monotonic() is now always available.
+ ``threading.Lock.acquire()``, ``threading.RLock.acquire()`` and socket
+ operations now use a monotonic clock, instead of the system clock, when a
+ timeout is used.
-- Issue #20437: Fixed 22 potential bugs when deleting objects references.
+- Issue #21527: Add a default number of workers to ThreadPoolExecutor equal
+ to 5 times the number of CPUs. Patch by Claudiu Popa.
-- Issue #20500: Displaying an exception at interpreter shutdown no longer
- risks triggering an assertion failure in PyObject_Str.
+- Issue #22216: smtplib now resets its state more completely after a quit. The
+ most obvious consequence of the previous behavior was a STARTTLS failure
+ during a connect/starttls/quit/connect/starttls sequence.
-- Issue #20538: UTF-7 incremental decoder produced inconsistent string when
- input was truncated in BASE64 section.
+- Issue #22098: ctypes' BigEndianStructure and LittleEndianStructure now
+ define an empty __slots__ so that subclasses don't always get an instance
+ dict. Patch by Claudiu Popa.
-- Issue #20404: io.TextIOWrapper (and hence the open() builtin) now uses the
- internal codec marking system added for issue #19619 to throw LookupError
- for known non-text encodings at stream construction time. The existing
- output type checks remain in place to deal with unmarked third party
- codecs.
+- Issue #22185: Fix an occasional RuntimeError in threading.Condition.wait()
+ caused by mutation of the waiters queue without holding the lock. Patch
+ by Doug Zongker.
-- Issue #17162: Add PyType_GetSlot.
+- Issue #22287: On UNIX, _PyTime_gettimeofday() now uses
+ clock_gettime(CLOCK_REALTIME) if available. As a side effect, Python now
+ depends on the librt library on Solaris and on Linux (only with glibc older
+ than 2.17).
-- Issue #20162: Fix an alignment issue in the siphash24() hash function which
- caused a crash on PowerPC 64-bit (ppc64).
+- Issue #22182: Use e.args to unpack exceptions correctly in
+ distutils.file_util.move_file. Patch by Claudiu Popa.
-Library
--------
+- The webbrowser module now uses subprocess's start_new_session=True rather
+ than a potentially risky preexec_fn=os.setsid call.
-- Issue #20530: The signatures for slot builtins have been updated
- to reflect the fact that they only accept positional-only arguments.
+- Issue #22042: signal.set_wakeup_fd(fd) now raises an exception if the file
+ descriptor is in blocking mode.
-- Issue #20517: Functions in the os module that accept two filenames
- now register both filenames in the exception on failure.
+- Issue #16808: inspect.stack() now returns a named tuple instead of a tuple.
+ Patch by Daniel Shahaf.
-- Issue #20563: The ipaddress module API is now considered stable.
+- Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode.
-- Issue #14983: email.generator now always adds a line end after each MIME
- boundary marker, instead of doing so only when there is an epilogue. This
- fixes an RFC compliance bug and solves an issue with signed MIME parts.
+- Issue #2527: Add a *globals* argument to timeit functions, in order to
+ override the globals namespace in which the timed code is executed.
+ Patch by Ben Roberts.
-- Issue #20540: Fix a performance regression (vs. Python 3.2) when layering
- a multiprocessing Connection over a TCP socket. For small payloads, Nagle's
- algorithm would introduce idle delays before the entire transmission of a
- message.
+- Issue #22118: Switch urllib.parse to use RFC 3986 semantics for the
+ resolution of relative URLs, rather than RFCs 1808 and 2396.
+ Patch by Demian Brecht.
-- Issue #16983: the new email header parsing code will now decode encoded words
- that are (incorrectly) surrounded by quotes, and register a defect.
+- Issue #21549: Added the "members" parameter to TarFile.list().
-- Issue #19772: email.generator no longer mutates the message object when
- doing a down-transform from 8bit to 7bit CTEs.
+- Issue #19628: Allow compileall recursion depth to be specified with a -r
+ option.
-- Issue #20536: the statistics module now correctly handle Decimal instances
- with positive exponents
+- Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows.
-- Issue #18805: the netmask/hostmask parsing in ipaddress now more reliably
- filters out illegal values and correctly allows any valid prefix length.
+- Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter.
-- Issue #20481: For at least Python 3.4, the statistics module will require
- that all inputs for a single operation be of a single consistent type, or
- else a mixed of ints and a single other consistent type. This avoids
- some interoperability issues that arose with the previous approach of
- coercing to a suitable common type.
+- Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names.
-- Issue #20478: the statistics module now treats collections.Counter inputs
- like any other iterable.
+- Issue #15381: Optimized line reading in io.BytesIO.
-- Issue #17369: get_filename was raising an exception if the filename
- parameter's RFC2231 encoding was broken in certain ways. This was
- a regression relative to python2.
+- Issue #8797: Raise HTTPError on failed Basic Authentication immediately.
+ Initial patch by Sam Bull.
-- Issue #20013: Some imap servers disconnect if the current mailbox is
- deleted, and imaplib did not handle that case gracefully. Now it
- handles the 'bye' correctly.
+- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems()
+ in the mailbox module.
-- Issue #20531: Revert 3.4 version of fix for #19063, and apply the 3.3
- version. That is, do *not* raise an error if unicode is passed to
- email.message.Message.set_payload.
+- Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when
+ parsing long line. Original patch by Raymond Hettinger.
-- Issue #20476: If a non-compat32 policy is used with any of the email parsers,
- EmailMessage is now used as the factory class. The factory class should
- really come from the policy; that will get fixed in 3.5.
+- Issue #22184: The functools LRU Cache decorator factory now gives an earlier
+ and clearer error message when the user forgets the required parameters.
-- Issue #19920: TarFile.list() no longer fails when outputs a listing
- containing non-encodable characters. Based on patch by Vajrasky Kok.
+- Issue #17923: glob() patterns ending with a slash no longer match non-dirs on
+ AIX. Based on patch by Delhallt.
-- Issue #20515: Fix NULL pointer dereference introduced by issue #20368.
+- Issue #21725: Added support for RFC 6531 (SMTPUTF8) in smtpd.
-- Issue #19186: Restore namespacing of expat symbols inside the pyexpat module.
+- Issue #22176: Update the ctypes module's libffi to v3.1. This release
+ adds support for the Linux AArch64 and POWERPC ELF ABIv2 little endian
+ architectures.
-- Issue #20053: ensurepip (and hence venv) are no longer affected by the
- settings in the default pip configuration file.
+- Issue #5411: Added support for the "xztar" format in the shutil module.
-- Issue #20426: When passing the re.DEBUG flag, re.compile() displays the
- debug output every time it is called, regardless of the compilation cache.
+- Issue #21121: Don't force 3rd party C extensions to be built with
+ -Werror=declaration-after-statement.
-- Issue #20368: The null character now correctly passed from Tcl to Python.
- Improved error handling in variables-related commands.
+- Issue #21975: Fixed crash when using uninitialized sqlite3.Row (in particular
+ when unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the
+ __new__() method.
-- Issue #20435: Fix _pyio.StringIO.getvalue() to take into account newline
- translation settings.
+- Issue #20170: Convert posixmodule to use Argument Clinic.
-- tracemalloc: Fix slicing traces and fix slicing a traceback.
+- Issue #21539: Add a *exists_ok* argument to `Pathlib.mkdir()` to mimic
+ `mkdir -p` and `os.makedirs()` functionality. When true, ignore
+ FileExistsErrors. Patch by Berker Peksag.
-- Issue #20354: Fix an alignment issue in the tracemalloc module on 64-bit
- platforms. Bug seen on 64-bit Linux when using "make profile-opt".
+- Issue #22127: Bypass IDNA for pure-ASCII host names in the socket module
+ (in particular for numeric IPs).
-- Issue #17159: inspect.signature now accepts duck types of functions,
- which adds support for Cython functions. Initial patch by Stefan Behnel.
+- Issue #21047: set the default value for the *convert_charrefs* argument
+ of HTMLParser to True. Patch by Berker Peksag.
-- Issue #18801: Fix inspect.classify_class_attrs to correctly classify
- object.__new__ and object.__init__.
+- Add an __all__ to html.entities.
-- Fixed cmath.isinf's name in its argument parsing code.
+- Issue #15114: the strict mode and argument of HTMLParser, HTMLParser.error,
+ and the HTMLParserError exception have been removed.
-- Issue #20311, #20452: poll and epoll now round the timeout away from zero,
- instead of rounding towards zero, in select and selectors modules:
- select.epoll.poll(), selectors.PollSelector.poll() and
- selectors.EpollSelector.poll(). For example, a timeout of one microsecond
- (1e-6) is now rounded to one millisecondi (1e-3), instead of being rounded to
- zero. However, the granularity property and asyncio's resolution feature
- were removed again.
+- Issue #22085: Dropped support of Tk 8.3 in Tkinter.
-- asyncio: Some refactoring; various fixes; add write flow control to
- unix pipes; Future.set_exception() instantiates the exception
- argument if it is a class; improved proactor pipe transport; support
- wait_for(f, None); don't log broken/disconnected pipes; use
- ValueError instead of assert for forbidden subprocess_{shell,exec}
- arguments; added a convenience API for subprocess management; added
- StreamReader.at_eof(); properly handle duplicate coroutines/futures
- in gather(), wait(), as_completed(); use a bytearray for buffering
- in StreamReader; and more.
+- Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk.
+ In particular this allows to initialize images from binary data.
-- Issue #20288: fix handling of invalid numeric charrefs in HTMLParser.
+- Issue #22003: When initialized from a bytes object, io.BytesIO() now
+ defers making a copy until it is mutated, improving performance and
+ memory use on some use cases. Patch by David Wilson.
-- Issue #20424: Python implementation of io.StringIO now supports lone surrogates.
+- Issue #22018: On Windows, signal.set_wakeup_fd() now also supports sockets.
+ A side effect is that Python depends to the WinSock library.
-- Issue #20308: inspect.signature now works on classes without user-defined
- __init__ or __new__ methods.
+- Issue #22054: Add os.get_blocking() and os.set_blocking() functions to get
+ and set the blocking mode of a file descriptor (False if the O_NONBLOCK flag
+ is set, True otherwise). These functions are not available on Windows.
-- Issue #20372: inspect.getfile (and a bunch of other inspect functions that
- use it) doesn't crash with unexpected AttributeError on classes defined in C
- without __module__.
+- Issue #17172: Make turtledemo start as active on OS X even when run with
+ subprocess. Patch by Lita Cho.
-- Issue #20356: inspect.signature formatting uses '/' to separate
- positional-only parameters from others.
+- Issue #21704: Fix build error for _multiprocessing when semaphores
+ are not available. Patch by Arfrever Frehtes Taifersar Arahesis.
-- Issue #20223: inspect.signature now supports methods defined with
- functools.partialmethods.
+- Issue #20173: Convert sha1, sha256, sha512 and md5 to ArgumentClinic.
+ Patch by Vajrasky Kok.
-- Issue #19456: ntpath.join() now joins relative paths correctly when a drive
- is present.
+- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError
+ on closed socket. repr(socket.socket) already works fine.
-- Issue #19077: tempfile.TemporaryDirectory cleanup no longer fails when
- called during shutdown. Emitting resource warning in __del__ no longer fails.
- Original patch by Antoine Pitrou.
+- Issue #22033: Reprs of most Python implemened classes now contain actual
+ class name instead of hardcoded one.
-- Issue #20394: Silence Coverity warning in audioop module.
+- Issue #21947: The dis module can now disassemble generator-iterator
+ objects based on their gi_code attribute. Patch by Clement Rouault.
-- Issue #20367: Fix behavior of concurrent.futures.as_completed() for
- duplicate arguments. Patch by Glenn Langford.
+- Issue #16133: The asynchat.async_chat.handle_read() method now ignores
+ BlockingIOError exceptions.
-- Issue #8260: The read(), readline() and readlines() methods of
- codecs.StreamReader returned incomplete data when were called after
- readline() or read(size). Based on patch by Amaury Forgeot d'Arc.
+- Issue #22044: Fixed premature DECREF in call_tzinfo_method.
+ Patch by Tom Flanagan.
-- Issue #20105: the codec exception chaining now correctly sets the
- traceback of the original exception as its __traceback__ attribute.
+- Issue #19884: readline: Disable the meta modifier key if stdout is not
+ a terminal to not write the ANSI sequence "\033[1034h" into stdout. This
+ sequence is used on some terminal (ex: TERM=xterm-256color") to enable
+ support of 8 bit characters.
-- Issue #17481: inspect.getfullargspec() now uses inspect.signature() API.
+- Issue #4350: Removed a number of out-of-dated and non-working for a long time
+ Tkinter methods.
-- Issue #15304: concurrent.futures.wait() can block forever even if
- Futures have completed. Patch by Glenn Langford.
+- Issue #6167: Scrollbar.activate() now returns the name of active element if
+ the argument is not specified. Scrollbar.set() now always accepts only 2
+ arguments.
-- Issue #14455: plistlib: fix serializing integers in the range
- of an unsigned long long but outside of the range of signed long long for
- binary plist files.
+- Issue #15275: Clean up and speed up the ntpath module.
-IDLE
-----
+- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is
+ specified.
-- Issue #20406: Use Python application icons for Idle window title bars.
- Patch mostly by Serhiy Storchaka.
+- Issue #22032: __qualname__ instead of __name__ is now always used to format
+ fully qualified class names of Python implemented classes.
-- Update the python.gif icon for the Idle classbrowser and pathbowser
- from the old green snake to the new blue and yellow snakes.
+- Issue #22031: Reprs now always use hexadecimal format with the "0x" prefix
+ when contain an id in form " at 0x...".
-- Issue #17721: Remove non-functional configuration dialog help button until we
- make it actually gives some help when clicked. Patch by Guilherme Simões.
+- Issue #22018: signal.set_wakeup_fd() now raises an OSError instead of a
+ ValueError on ``fstat()`` failure.
-Tests
------
+- Issue #21044: tarfile.open() now handles fileobj with an integer 'name'
+ attribute. Based on patch by Antoine Pietri.
-- Issue #20532: Tests which use _testcapi now are marked as CPython only.
+- Issue #21966: Respect -q command-line option when code module is ran.
-- Issue #19920: Added tests for TarFile.list(). Based on patch by Vajrasky Kok.
+- Issue #19076: Don't pass the redundant 'file' argument to self.error().
-- Issue #19990: Added tests for the imghdr module. Based on patch by
- Claudiu Popa.
+- Issue #16382: Improve exception message of warnings.warn() for bad
+ category. Initial patch by Phil Elson.
-- Issue #20474: Fix test_socket "unexpected success" failures on OS X 10.7+.
+- Issue #21932: os.read() now uses a :c:func:`Py_ssize_t` type instead of
+ :c:type:`int` for the size to support reading more than 2 GB at once. On
+ Windows, the size is truncted to INT_MAX. As any call to os.read(), the OS
+ may read less bytes than the number of requested bytes.
-Tools/Demos
------------
+- Issue #21942: Fixed source file viewing in pydoc's server mode on Windows.
-- Issue #20530: Argument Clinic's signature format has been revised again.
- The new syntax is highly human readable while still preventing false
- positives. The syntax also extends Python syntax to denote "self" and
- positional-only parameters, allowing inspect.Signature objects to be
- totally accurate for all supported builtins in Python 3.4.
+- Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError
+ if the number of received bytes is negative.
-- Issue #20456: Argument Clinic now observes the C preprocessor conditional
- compilation statements of the C files it parses. When a Clinic block is
- inside a conditional code, it adjusts its output to match, including
- automatically generating an empty methoddef macro.
+- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't
+ get a bytes string
-- Issue #20456: Cloned functions in Argument Clinic now use the correct
- name, not the name of the function they were cloned from, for text
- strings inside generated code.
+- Issue #21707: Add missing kwonlyargcount argument to
+ ModuleFinder.replace_paths_in_code().
-- Issue #20456: Fixed Argument Clinic's test suite and "--converters" feature.
+- Issue #20639: calling Path.with_suffix('') allows removing the suffix
+ again. Patch by July Tikhonov.
-- Issue #20456: Argument Clinic now allows specifying different names
- for a parameter in Python and C, using "as" on the parameter line.
+- Issue #21714: Disallow the construction of invalid paths using
+ Path.with_name(). Original patch by Antony Lee.
-- Issue #20326: Argument Clinic now uses a simple, unique signature to
- annotate text signatures in docstrings, resulting in fewer false
- positives. "self" parameters are also explicitly marked, allowing
- inspect.Signature() to authoritatively detect (and skip) said parameters.
+- Issue #15014: Added 'auth' method to smtplib to make implementing auth
+ mechanisms simpler, and used it internally in the login method.
-- Issue #20326: Argument Clinic now generates separate checksums for the
- input and output sections of the block, allowing external tools to verify
- that the input has not changed (and thus the output is not out-of-date).
+- Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed
+ as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman.
-Build
------
+- Issue #21090: io.FileIO.readall() does not ignore I/O errors anymore. Before,
+ it ignored I/O errors if at least the first C call read() succeed.
-- Issue #20465: Update SQLite shipped with OS X installer to 3.8.3.
+- Issue #5800: headers parameter of wsgiref.headers.Headers is now optional.
+ Initial patch by Pablo Torres Navarrete and SilentGhost.
-C-API
------
+- Issue #21781: ssl.RAND_add() now supports strings longer than 2 GB.
-- Issue #20517: Added new functions allowing OSError exceptions to reference
- two filenames instead of one: PyErr_SetFromErrnoWithFilenameObjects() and
- PyErr_SetExcFromWindowsErrWithFilenameObjects().
+- Issue #21679: Prevent extraneous fstat() calls during open(). Patch by
+ Bohuslav Kabrda.
-Documentation
--------------
+- Issue #21863: cProfile now displays the module name of C extension functions,
+ in addition to their own name.
-- Issue #20488: Change wording to say importlib is *the* implementation of
- import instead of just *an* implementation.
+- Issue #11453: asyncore: emit a ResourceWarning when an unclosed file_wrapper
+ object is destroyed. The destructor now closes the file if needed. The
+ close() method can now be called twice: the second call does nothing.
-- Issue #6386: Clarify in the tutorial that specifying a symlink to execute
- means the directory containing the executed script and not the symlink is
- added to sys.path.
+- Issue #21858: Better handling of Python exceptions in the sqlite3 module.
+- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is
+ discarded after parsing, so the input file isn't unexpectedly closed.
-What's New in Python 3.4.0 Beta 3?
-==================================
+- Issue #20295: imghdr now recognizes OpenEXR format images.
-Release date: 2014-01-26
+- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure
+ files closing. Patch by Claudiu Popa.
-Core and Builtins
------------------
+- Issue #21491: socketserver: Fix a race condition in child processes reaping.
-- Issue #20189: Four additional builtin types (PyTypeObject,
- PyMethodDescr_Type, _PyMethodWrapper_Type, and PyWrapperDescr_Type)
- have been modified to provide introspection information for builtins.
+- Issue #21719: Added the ``st_file_attributes`` field to os.stat_result on
+ Windows.
-- Issue #17825: Cursor "^" is correctly positioned for SyntaxError and
- IndentationError.
+- Issue #21832: Require named tuple inputs to be exact strings.
-- Issue #2382: SyntaxError cursor "^" is now written at correct position in most
- cases when multibyte characters are in line (before "^"). This still not
- works correctly with wide East Asian characters.
+- Issue #21722: The distutils "upload" command now exits with a non-zero
+ return code when uploading fails. Patch by Martin Dengler.
-- Issue #18960: The first line of Python script could be executed twice when
- the source encoding was specified on the second line. Now the source encoding
- declaration on the second line isn't effective if the first line contains
- anything except a comment. 'python -x' works now again with files with the
- source encoding declarations, and can be used to make Python batch files
- on Windows.
+- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the
+ maximum size. Patch written by Vajrasky Kok.
-Library
--------
+- Issue #21711: support for "site-python" directories has now been removed
+ from the site module (it was deprecated in 3.4).
-- asyncio: Various improvements and small changes not all covered by
- issues listed below. E.g. wait_for() now cancels the inner task if
- the timeout occcurs; tweaked the set of exported symbols; renamed
- Empty/Full to QueueEmpty/QueueFull; "with (yield from lock)" now
- uses a separate context manager; readexactly() raises if not enough
- data was read; PTY support tweaks.
+- Issue #17552: new socket.sendfile() method allowing to send a file over a
+ socket by using high-performance os.sendfile() on UNIX.
+ Patch by Giampaolo Rodola'.
-- Issue #20311: asyncio: Add a granularity attribute to BaseEventLoop: maximum
- between the resolution of the BaseEventLoop.time() method and the resolution
- of the selector. The granuarility is used in the scheduler to round time and
- deadline.
+- Issue #18039: dbm.dump.open() now always creates a new database when the
+ flag has the value 'n'. Patch by Claudiu Popa.
-- Issue #20311: selectors: Add a resolution attribute to BaseSelector.
+- Issue #21326: Add a new is_closed() method to asyncio.BaseEventLoop.
+ run_forever() and run_until_complete() methods of asyncio.BaseEventLoop now
+ raise an exception if the event loop was closed.
-- Issue #20189: unittest.mock now no longer assumes that any object for
- which it could get an inspect.Signature is a callable written in Python.
- Fix courtesy of Michael Foord.
+- Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths
+ before checking for a CGI script at that path.
-- Issue #20317: ExitStack.__exit__ could create a self-referential loop if an
- exception raised by a cleanup operation already had its context set
- correctly (for example, by the @contextmanager decorator). The infinite
- loop this caused is now avoided by checking if the expected context is
- already set before trying to fix it.
+- Issue #21310: Fixed possible resource leak in failed open().
-- Issue #20374: Fix build with GNU readline >= 6.3.
+- Issue #21256: Printout of keyword args should be in deterministic order in
+ a mock function call. This will help to write better doctests.
-- Issue #20262: Warnings are raised now when duplicate names are added in the
- ZIP file or too long ZIP file comment is truncated.
+- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods.
-- Issue #20165: The unittest module no longer considers tests marked with
- @expectedFailure successful if they pass.
+- Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a
+ valid file.
-- Issue #18574: Added missing newline in 100-Continue reply from
- http.server.BaseHTTPRequestHandler. Patch by Nikolaus Rath.
+- Issue #21515: tempfile.TemporaryFile now uses os.O_TMPFILE flag is available.
-- Issue #20270: urllib.urlparse now supports empty ports.
+- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods
+ that use 'self' in the example code is generated correctly.
-- Issue #20243: TarFile no longer raise ReadError when opened in write mode.
+- Issue #21463: In urllib.request, fix pruning of the FTP cache.
-- Issue #20238: TarFile opened with external fileobj and "w:gz" mode didn't
- write complete output on close.
+- Issue #21618: The subprocess module could fail to close open fds that were
+ inherited by the calling process and already higher than POSIX resource
+ limits would otherwise allow. On systems with a functioning /proc/self/fd
+ or /dev/fd interface the max is now ignored and all fds are closed.
-- Issue #20245: The open functions in the tarfile module now correctly handle
- empty mode.
+- Issue #20383: Introduce importlib.util.module_from_spec() as the preferred way
+ to create a new module.
-- Issue #20242: Fixed basicConfig() format strings for the alternative
- formatting styles. Thanks to kespindler for the bug report and patch.
+- Issue #21552: Fixed possible integer overflow of too long string lengths in
+ the tkinter module on 64-bit platforms.
-- Issue #20246: Fix buffer overflow in socket.recvfrom_into.
+- Issue #14315: The zipfile module now ignores extra fields in the central
+ directory that are too short to be parsed instead of letting a struct.unpack
+ error bubble up as this "bad data" appears in many real world zip files in
+ the wild and is ignored by other zip tools.
-- Issues #20206 and #5803: Fix edge case in email.quoprimime.encode where it
- truncated lines ending in a character needing encoding but no newline by
- using a more efficient algorithm that doesn't have the bug.
+- Issue #13742: Added "key" and "reverse" parameters to heapq.merge().
+ (First draft of patch contributed by Simon Sapin.)
-- Issue #19082: Working xmlrpc.server and xmlrpc.client examples. Both in
- modules and in documentation. Initial patch contributed by Vajrasky Kok.
+- Issue #21402: tkinter.ttk now works when default root window is not set.
-- Issue #20138: The wsgiref.application_uri() and wsgiref.request_uri()
- functions now conform to PEP 3333 when handle non-ASCII URLs.
+- Issue #3015: _tkinter.create() now creates tkapp object with wantobject=1 by
+ default.
-- Issue #19097: Raise the correct Exception when cgi.FieldStorage is given an
- invalid fileobj.
+- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particulr
+ it supports reverse() and negative indices. Original patch by Claudiu Popa.
-- Issue #20152: Ported Python/import.c over to Argument Clinic.
+- Issue #18807: If copying (no symlinks) specified for a venv, then the python
+ interpreter aliases (python, python3) are now created by copying rather than
+ symlinking.
-- Issue #13107: argparse and optparse no longer raises an exception when output
- a help on environment with too small COLUMNS. Based on patch by
- Elazar Gershuni.
+- Issue #20197: Added support for the WebP image type in the imghdr module.
+ Patch by Fabrice Aneche and Claudiu Popa.
-- Issue #20207: Always disable SSLv2 except when PROTOCOL_SSLv2 is explicitly
- asked for.
+- Issue #21513: Speedup some properties of IP addresses (IPv4Address,
+ IPv6Address) such as .is_private or .is_multicast.
-- Issue #18960: The tokenize module now ignore the source encoding declaration
- on the second line if the first line contains anything except a comment.
+- Issue #21137: Improve the repr for threading.Lock() and its variants
+ by showing the "locked" or "unlocked" status. Patch by Berker Peksag.
-- Issue #20078: Reading malformed zipfiles no longer hangs with 100% CPU
- consumption.
+- Issue #21538: The plistlib module now supports loading of binary plist files
+ when reference or offset size is not a power of two.
-- Issue #20113: os.readv() and os.writev() now raise an OSError exception on
- error instead of returning -1.
+- Issue #21455: Add a default backlog to socket.listen().
-- Issue #19719: Make importlib.abc.MetaPathFinder.find_module(),
- PathEntryFinder.find_loader(), and Loader.load_module() use PEP 451 APIs to
- help with backwards-compatibility.
+- Issue #21525: Most Tkinter methods which accepted tuples now accept lists too.
-- Issue #20144: inspect.Signature now supports parsing simple symbolic
- constants as parameter default values in __text_signature__.
+- Issue #22166: with the assistance of a new internal _codecs._forget_codec
+ helping function, test_codecs now clears the encoding caches to avoid the
+ appearance of a reference leak
-- Issue #20072: Fixed multiple errors in tkinter with wantobjects is False.
+- Issue #22236: Tkinter tests now don't reuse default root window. New root
+ window is created for every test class.
-- Issue #20229: Avoid plistlib deprecation warning in platform.mac_ver().
+- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial
+ shape.
-- Issue #14455: Fix some problems with the new binary plist support in plistlib.
+- Issue #20826: Optimize ipaddress.collapse_addresses().
-IDLE
-----
+- Issue #21487: Optimize ipaddress.summarize_address_range() and
+ ipaddress.{IPv4Network,IPv6Network}.subnets().
-- Issue #17390: Add Python version to Idle editor window title bar.
- Original patches by Edmond Burnett and Kent Johnson.
+- Issue #21486: Optimize parsing of netmasks in ipaddress.IPv4Network and
+ ipaddress.IPv6Network.
-- Issue #18960: IDLE now ignores the source encoding declaration on the second
- line if the first line contains anything except a comment.
+- Issue #13916: Disallowed the surrogatepass error handler for non UTF-*
+ encodings.
-Tests
------
+- Issue #20998: Fixed re.fullmatch() of repeated single character pattern
+ with ignore case. Original patch by Matthew Barnett.
-- Issue #20358: Tests for curses.window.overlay and curses.window.overwrite
- no longer specify min{row,col} > max{row,col}.
+- Issue #21075: fileinput.FileInput now reads bytes from standard stream if
+ binary mode is specified. Patch by Sam Kimbrel.
-- Issue #19804: The test_find_mac test in test_uuid is now skipped if the
- ifconfig executable is not available.
+- Issue #19775: Add a samefile() method to pathlib Path objects. Initial
+ patch by Vajrasky Kok.
-- Issue #19886: Use better estimated memory requirements for bigmem tests.
+- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject
+ (and friends).
-Tools/Demos
------------
+- Issue #21398: Fix an unicode error in the pydoc pager when the documentation
+ contains characters not encodable to the stdout encoding.
-- Issue #20390: Argument Clinic's "file" output preset now defaults to
- "{dirname}/clinic/{basename}.h".
+- Issue #16531: ipaddress.IPv4Network and ipaddress.IPv6Network now accept
+ an (address, netmask) tuple argument, so as to easily construct network
+ objects from existing addresses.
-- Issue #20390: Argument Clinic's "class" directive syntax has been extended
- with two new required arguments: "typedef" and "type_object".
+- Issue #21156: importlib.abc.InspectLoader.source_to_code() is now a
+ staticmethod.
-- Issue #20390: Argument Clinic: If __new__ or __init__ functions didn't use
- kwargs (or args), the PyArg_NoKeywords (or PyArg_NoPositional) calls
- generated are only run when the type object is an exact match.
+- Issue #21424: Simplified and optimized heaqp.nlargest() and nmsmallest()
+ to make fewer tuple comparisons.
-- Issue #20390: Argument Clinic now fails if you have required parameters after
- optional parameters.
+- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a
+ flush() on the underlying binary stream. Patch by akira.
-- Issue #20390: Argument Clinic converters now have a new template they can
- inject code into: "modifiers". Code put there is run in the parsing
- function after argument parsing but before the call to the impl.
+- Issue #18314: Unlink now removes junctions on Windows. Patch by Kim Gräsman
-- Issue #20376: Argument Clinic now escapes backslashes in docstrings.
+- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0.
+ In porting to Argument Clinic, the first two arguments were reversed.
-- Issue #20381: Argument Clinic now sanity checks the default argument when
- c_default is also specified, providing a nice failure message for
- disallowed values.
+- Issue #21407: _decimal: The module now supports function signatures.
-- Issue #20189: Argument Clinic now ensures that parser functions for
- __new__ are always of type newfunc, the type of the tp_new slot.
- Similarly, parser functions for __init__ are now always of type initproc,
- the type of tp_init.
+- Issue #10650: Remove the non-standard 'watchexp' parameter from the
+ Decimal.quantize() method in the Python version. It had never been
+ present in the C version.
-- Issue #20189: Argument Clinic now suppresses the docstring for __new__
- and __init__ functions if no docstring is provided in the input.
+- Issue #21469: Reduced the risk of false positives in robotparser by
+ checking to make sure that robots.txt has been read or does not exist
+ prior to returning True in can_fetch().
-- Issue #20189: Argument Clinic now suppresses the "self" parameter in the
- impl for @staticmethod functions.
+- Issue #19414: Have the OrderedDict mark deleted links as unusable.
+ This gives an early failure if the link is deleted during iteration.
-- Issue #20294: Argument Clinic now supports argument parsing for __new__ and
- __init__ functions.
+- Issue #21421: Add __slots__ to the MappingViews ABC.
+ Patch by Josh Rosenberg.
-- Issue #20299: Argument Clinic custom converters may now change the default
- value of c_default and py_default with a class member.
-
-- Issue #20287: Argument Clinic's output is now configurable, allowing
- delaying its output or even redirecting it to a separate file.
+- Issue #21101: Eliminate double hashing in the C speed-up code for
+ collections.Counter().
-- Issue #20226: Argument Clinic now permits simple expressions
- (e.g. "sys.maxsize - 1") as default values for parameters.
+- Issue #21321: itertools.islice() now releases the reference to the source
+ iterator when the slice is exhausted. Patch by Anton Afanasyev.
-- Issue #19936: Added executable bits or shebang lines to Python scripts which
- requires them. Disable executable bits and shebang lines in test and
- benchmark files in order to prevent using a random system python, and in
- source files of modules which don't provide command line interface. Fixed
- shebang lines in the unittestgui and checkpip scripts.
+- Issue #21057: TextIOWrapper now allows the underlying binary stream's
+ read() or read1() method to return an arbitrary bytes-like object
+ (such as a memoryview). Patch by Nikolaus Rath.
-- Issue #20268: Argument Clinic now supports cloning the parameters and
- return converter of existing functions.
+- Issue #20951: SSLSocket.send() now raises either SSLWantReadError or
+ SSLWantWriteError on a non-blocking socket if the operation would block.
+ Previously, it would return 0. Patch by Nikolaus Rath.
-- Issue #20228: Argument Clinic now has special support for class special
- methods.
+- Issue #13248: removed previously deprecated asyncore.dispatcher __getattr__
+ cheap inheritance hack.
-- Issue #20214: Fixed a number of small issues and documentation errors in
- Argument Clinic (see issue for details).
+- Issue #9815: assertRaises now tries to clear references to local variables
+ in the exception's traceback.
-- Issue #20196: Fixed a bug where Argument Clinic did not generate correct
- parsing code for functions with positional-only parameters where all arguments
- are optional.
+- Issue #19940: ssl.cert_time_to_seconds() now interprets the given time
+ string in the UTC timezone (as specified in RFC 5280), not the local
+ timezone.
-- Issue #18960: 2to3 and the findnocoding.py script now ignore the source
- encoding declaration on the second line if the first line contains anything
- except a comment.
+- Issue #13204: Calling sys.flags.__new__ would crash the interpreter,
+ now it raises a TypeError.
-- Issue #19723: The marker comments Argument Clinic uses have been changed
- to improve readability.
+- Issue #19385: Make operations on a closed dbm.dumb database always raise the
+ same exception.
-- Issue #20157: When Argument Clinic renames a parameter because its name
- collides with a C keyword, it no longer exposes that rename to PyArg_Parse.
+- Issue #21207: Detect when the os.urandom cached fd has been closed or
+ replaced, and open it anew.
-- Issue #20141: Improved Argument Clinic's support for the PyArg_Parse "O!"
- format unit.
+- Issue #21291: subprocess's Popen.wait() is now thread safe so that
+ multiple threads may be calling wait() or poll() on a Popen instance
+ at the same time without losing the Popen.returncode value.
-- Issue #20144: Argument Clinic now supports simple symbolic constants
- as parameter default values.
+- Issue #21127: Path objects can now be instantiated from str subclass
+ instances (such as ``numpy.str_``).
-- Issue #20143: The line numbers reported in Argument Clinic errors are
- now more accurate.
+- Issue #15002: urllib.response object to use _TemporaryFileWrapper (and
+ _TemporaryFileCloser) facility. Provides a better way to handle file
+ descriptor close. Patch contributed by Christian Theune.
-- Issue #20142: Py_buffer variables generated by Argument Clinic are now
- initialized with a default value.
+- Issue #12220: mindom now raises a custom ValueError indicating it doesn't
+ support spaces in URIs instead of letting a 'split' ValueError bubble up.
-Build
------
+- Issue #21068: The ssl.PROTOCOL* constants are now enum members.
-- Issue #12837: Silence a tautological comparison warning on OS X under Clang in
- socketmodule.c.
+- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd.
+- Issue #21262: New method assert_not_called for Mock.
+ It raises AssertionError if the mock has been called.
-What's New in Python 3.4.0 Beta 2?
-==================================
+- Issue #21238: New keyword argument `unsafe` to Mock. It raises
+ `AttributeError` incase of an attribute startswith assert or assret.
-Release date: 2014-01-05
+- Issue #20896: ssl.get_server_certificate() now uses PROTOCOL_SSLv23, not
+ PROTOCOL_SSLv3, for maximum compatibility.
-Core and Builtins
------------------
+- Issue #21239: patch.stopall() didn't work deterministically when the same
+ name was patched more than once.
-- Issue #17432: Drop UCS2 from names of Unicode functions in python3.def.
+- Issue #21203: Updated fileConfig and dictConfig to remove inconsistencies.
+ Thanks to Jure Koren for the patch.
-- Issue #19526: Exclude all new API from the stable ABI. Exceptions can be
- made if a need is demonstrated.
+- Issue #21222: Passing name keyword argument to mock.create_autospec now
+ works.
-- Issue #19969: PyBytes_FromFormatV() now raises an OverflowError if "%c"
- argument is not in range [0; 255].
+- Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX.
-- Issue #19995: %c, %o, %x, and %X now issue a DeprecationWarning on non-integer
- input; reworded docs to clarify that an integer type should define both __int__
- and __index__.
+- Issue #17498: Some SMTP servers disconnect after certain errors, violating
+ strict RFC conformance. Instead of losing the error code when we issue the
+ subsequent RSET, smtplib now returns the error code and defers raising the
+ SMTPServerDisconnected error until the next command is issued.
-- Issue #19787: PyThread_set_key_value() now always set the value. In Python
- 3.3, the function did nothing if the key already exists (if the current value
- is a non-NULL pointer).
+- Issue #17826: setting an iterable side_effect on a mock function created by
+ create_autospec now works. Patch by Kushal Das.
-- Issue #14432: Remove the thread state field from the frame structure. Fix a
- crash when a generator is created in a C thread that is destroyed while the
- generator is still used. The issue was that a generator contains a frame, and
- the frame kept a reference to the Python state of the destroyed C thread. The
- crash occurs when a trace function is setup.
+- Issue #7776: Fix ``Host:`` header and reconnection when using
+ http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath.
-- Issue #19576: PyGILState_Ensure() now initializes threads. At startup, Python
- has no concrete GIL. If PyGILState_Ensure() is called from a new thread for
- the first time and PyEval_InitThreads() was not called yet, a GIL needs to be
- created.
+- Issue #20968: unittest.mock.MagicMock now supports division.
+ Patch by Johannes Baiter.
-- Issue #17576: Deprecation warning emitted now when __int__() or __index__()
- return not int instance.
+- Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second
+ parameter. Bug reported by Guido Vranken.
-- Issue #19932: Fix typo in import.h, missing whitespaces in function prototypes.
+- Issue #21169: getpass now handles non-ascii characters that the
+ input stream encoding cannot encode by re-encoding using the
+ replace error handler.
-- Issue #19736: Add module-level statvfs constants defined for GNU/glibc
- based systems.
+- Issue #21171: Fixed undocumented filter API of the rot13 codec.
+ Patch by Berker Peksag.
-- Issue #20097: Fix bad use of "self" in importlib's WindowsRegistryFinder.
+- Issue #20539: Improved math.factorial error message for large positive inputs
+ and changed exception type (OverflowError -> ValueError) for large negative
+ inputs.
-- Issue #19729: In str.format(), fix recursive expansion in format spec.
+- Issue #21172: isinstance check relaxed from dict to collections.Mapping.
-- Issue #19638: Fix possible crash / undefined behaviour from huge (more than 2
- billion characters) input strings in _Py_dg_strtod.
+- Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError
+ if path and sock are specified at the same time.
-Library
--------
+- Issue #21136: Avoid unnecessary normalization of Fractions resulting from
+ power and other operations. Patch by Raymond Hettinger.
-- Issue #20154: Deadlock in asyncio.StreamReader.readexactly().
+- Issue #17621: Introduce importlib.util.LazyLoader.
-- Issue #16113: Remove sha3 module again.
+- Issue #21076: signal module constants were turned into enums.
+ Patch by Giampaolo Rodola'.
-- Issue #20111: pathlib.Path.with_suffix() now sanity checks the given suffix.
+- Issue #20636: Improved the repr of Tkinter widgets.
-- Fix breakage in TestSuite.countTestCases() introduced by issue #11798.
+- Issue #19505: The items, keys, and values views of OrderedDict now support
+ reverse iteration using reversed().
-- Issue #20108: Avoid parameter name clash in inspect.getcallargs().
+- Issue #21149: Improved thread-safety in logging cleanup during interpreter
+ shutdown. Thanks to Devin Jeanpierre for the patch.
-- Issue #19918: Fix PurePath.relative_to() under Windows.
+- Issue #21058: Fix a leak of file descriptor in
+ :func:`tempfile.NamedTemporaryFile`, close the file descriptor if
+ :func:`io.open` fails
-- Issue #19422: Explicitly disallow non-SOCK_STREAM sockets in the ssl
- module, rather than silently let them emit clear text data.
+- Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing.
-- Issue #20046: Locale alias table no longer contains entities which can be
- calculated. Generalized support of the euro modifier.
+- Issue #21013: Enhance ssl.create_default_context() when used for server side
+ sockets to provide better security by default.
-- Issue #20027: Fixed locale aliases for devanagari locales.
+- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a
+ TypeError if the second argument is not a string or compiled regex.
-- Issue #20067: Tkinter variables now work when wantobjects is false.
+- Issue #20633: Replace relative import by absolute import.
-- Issue #19020: Tkinter now uses splitlist() instead of split() in configure
- methods.
+- Issue #20980: Stop wrapping exception when using ThreadPool.
-- Issue #19744: ensurepip now provides a better error message when Python is
- built without SSL/TLS support (pip currently requires that support to run,
- even if only operating with local wheel files)
+- Issue #21082: In os.makedirs, do not set the process-wide umask. Note this
+ changes behavior of makedirs when exist_ok=True.
-- Issue #19734: ensurepip now ignores all pip environment variables to avoid
- odd behaviour based on user configuration settings
+- Issue #20990: Fix issues found by pyflakes for multiprocessing.
-- Fix TypeError on "setup.py upload --show-response".
+- Issue #21015: SSL contexts will now automatically select an elliptic
+ curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise
+ default to "prime256v1".
-- Issue #20045: Fix "setup.py register --list-classifiers".
+- Issue #21000: Improve the command-line interface of json.tool.
-- Issue #18879: When a method is looked up on a temporary file, avoid closing
- the file before the method is possibly called.
+- Issue #20995: Enhance default ciphers used by the ssl module to enable
+ better security an prioritize perfect forward secrecy.
-- Issue #20037: Avoid crashes when opening a text file late at interpreter
- shutdown.
+- Issue #20884: Don't assume that __file__ is defined on importlib.__init__.
-- Issue #19967: Thanks to the PEP 442, asyncio.Future now uses a
- destructor to log uncaught exceptions, instead of the dedicated
- _TracebackLogger class.
+- Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests.
-- Added a Task.current_task() class method to asyncio.
+- Issue #20627: xmlrpc.client.ServerProxy is now a context manager.
-- Issue #19850: Set SA_RESTART in asyncio when registering a signal
- handler to limit EINTR occurrences.
+- Issue #19165: The formatter module now raises DeprecationWarning instead of
+ PendingDeprecationWarning.
-- Implemented write flow control in asyncio for proactor event loop (Windows).
+- Issue #13936: Remove the ability of datetime.time instances to be considered
+ false in boolean contexts.
-- Change write buffer in asyncio use to avoid O(N**2) behavior. Make
- write()/sendto() accept bytearray/memoryview.
+- Issue 18931: selectors module now supports /dev/poll on Solaris.
+ Patch by Giampaolo Rodola'.
-- Issue #20034: Updated alias mapping to most recent locale.alias file
- from X.org distribution using makelocalealias.py.
+- Issue #19977: When the ``LC_TYPE`` locale is the POSIX locale (``C`` locale),
+ :py:data:`sys.stdin` and :py:data:`sys.stdout` are now using the
+ ``surrogateescape`` error handler, instead of the ``strict`` error handler.
-- Issue #5815: Fixed support for locales with modifiers. Fixed support for
- locale encodings with hyphens.
+- Issue #20574: Implement incremental decoder for cp65001 code (Windows code
+ page 65001, Microsoft UTF-8).
-- Issue #20026: Fix the sqlite module to handle correctly invalid isolation
- level (wrong type).
+- Issue #20879: Delay the initialization of encoding and decoding tables for
+ base32, ascii85 and base85 codecs in the base64 module, and delay the
+ initialization of the unquote_to_bytes() table of the urllib.parse module, to
+ not waste memory if these modules are not used.
-- Issue #18829: csv.Dialect() now checks type for delimiter, escapechar and
- quotechar fields. Original patch by Vajrasky Kok.
+- Issue #19157: Include the broadcast address in the usuable hosts for IPv6
+ in ipaddress.
-- Issue #19855: uuid.getnode() on Unix now looks on the PATH for the
- executables used to find the mac address, with /sbin and /usr/sbin as
- fallbacks.
+- Issue #11599: When an external command (e.g. compiler) fails, distutils now
+ prints out the whole command line (instead of just the command name) if the
+ environment variable DISTUTILS_DEBUG is set.
-- Issue #20007: HTTPResponse.read(0) no more prematurely closes connection.
- Original patch by Simon Sapin.
+- Issue #4931: distutils should not produce unhelpful "error: None" messages
+ anymore. distutils.util.grok_environment_error is kept but doc-deprecated.
-- Issue #19946: multiprocessing now uses runpy to initialize __main__ in
- child processes when necessary, allowing it to correctly handle scripts
- without suffixes and submodules that use explicit relative imports or
- otherwise rely on parent modules being correctly imported prior to
- execution.
+- Issue #20875: Prevent possible gzip "'read' is not defined" NameError.
+ Patch by Claudiu Popa.
-- Issue #19921: When Path.mkdir() is called with parents=True, any missing
- parent is created with the default permissions, ignoring the mode argument
- (mimicking the POSIX "mkdir -p" command).
+- Issue #11558: ``email.message.Message.attach`` now returns a more
+ useful error message if ``attach`` is called on a message for which
+ ``is_multipart`` is False.
-- Issue #19887: Improve the Path.resolve() algorithm to support certain
- symlink chains.
+- Issue #20283: RE pattern methods now accept the string keyword parameters
+ as documented. The pattern and source keyword parameters are left as
+ deprecated aliases.
-- Issue #19912: Fixed numerous bugs in ntpath.splitunc().
+- Issue #20778: Fix modulefinder to work with bytecode-only modules.
-- Issue #19911: ntpath.splitdrive() now correctly processes the 'İ' character
- (U+0130, LATIN CAPITAL LETTER I WITH DOT ABOVE).
+- Issue #20791: copy.copy() now doesn't make a copy when the input is
+ a bytes object. Initial patch by Peter Otten.
-- Issue #19532: python -m compileall with no filename/directory arguments now
- respects the -f and -q flags instead of ignoring them.
+- Issue #19748: On AIX, time.mktime() now raises an OverflowError for year
+ outsize range [1902; 2037].
-- Issue #19623: Fixed writing to unseekable files in the aifc module.
+- Issue #19573: inspect.signature: Use enum for parameter kind constants.
-- Issue #19946: multiprocessing.spawn now raises ImportError when the module to
- be used as the main module cannot be imported.
+- Issue #20726: inspect.signature: Make Signature and Parameter picklable.
-- Issue #17919: select.poll.register() again works with poll.POLLNVAL on AIX.
- Fixed integer overflow in the eventmask parameter.
+- Issue #17373: Add inspect.Signature.from_callable method.
-- Issue #19063: if a Charset's body_encoding was set to None, the email
- package would generate a message claiming the Content-Transfer-Encoding
- was 7bit, and produce garbage output for the content. This now works.
- A couple of other set_payload mishandlings of non-ASCII are also fixed.
- In addition, calling set_payload with a string argument without
- specifying a charset now raises an error (this is a new error in 3.4).
+- Issue #20378: Improve repr of inspect.Signature and inspect.Parameter.
-- Issue #15475: Add __sizeof__ implementations for itertools objects.
+- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for
+ missing keyword-only arguments. Patch by Jeremiah Lowin.
-- Issue #19944: Fix importlib.find_spec() so it imports parents as needed
- and move the function to importlib.util.
+- Issue #20817: Fix inspect.getcallargs() to fail correctly if more
+ than 3 arguments are missing. Patch by Jeremiah Lowin.
-- Issue #19880: Fix a reference leak in unittest.TestCase. Explicitly break
- reference cycles between frames and the _Outcome instance.
+- Issue #6676: Ensure a meaningful exception is raised when attempting
+ to parse more than one XML document per pyexpat xmlparser instance.
+ (Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with
+ suggested wording by David Gutteridge)
-- Issue #17429: platform.linux_distribution() now decodes files from the UTF-8
- encoding with the surrogateescape error handler, instead of decoding from the
- locale encoding in strict mode. It fixes the function on Fedora 19 which is
- probably the first major distribution release with a non-ASCII name. Patch
- written by Toshio Kuratomi.
+- Issue #21117: Fix inspect.signature to better support functools.partial.
+ Due to the specifics of functools.partial implementation,
+ positional-or-keyword arguments passed as keyword arguments become
+ keyword-only.
-- Issue #19343: Expose FreeBSD-specific APIs in resource module. Original
- patch by Koobs.
+- Issue #20334: inspect.Signature and inspect.Parameter are now hashable.
+ Thanks to Antony Lee for bug reports and suggestions.
-- Issue #19929: Call os.read with 32768 within subprocess.Popen.communicate
- rather than 4096 for efficiency. A microbenchmark shows Linux and OS X
- both using ~50% less cpu time this way.
+- Issue #15916: doctest.DocTestSuite returns an empty unittest.TestSuite instead
+ of raising ValueError if it finds no tests
-- Issue #19506: Use a memoryview to avoid a data copy when piping data
- to stdin within subprocess.Popen.communicate. 5-10% less cpu usage.
+- Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug
+ in yield-from implementation in CPythons prior to 3.4.1.
-- Issue #19876: selectors unregister() no longer raises ValueError or OSError
- if the FD is closed (as long as it was registered).
+- asyncio: Add gi_{frame,running,code} properties to CoroWrapper
+ (upstream issue #163).
-- Issue #19908: pathlib now joins relative Windows paths correctly when a drive
- is present. Original patch by Antoine Pitrou.
+- Issue #21311: Avoid exception in _osx_support with non-standard compiler
+ configurations. Patch by John Szakmeister.
-- Issue #19296: Silence compiler warning in dbm_open
+- Issue #11571: Ensure that the turtle window becomes the topmost window
+ when launched on OS X.
-- Issue #6784: Strings from Python 2 can now be unpickled as bytes
- objects by setting the encoding argument of Unpickler to be 'bytes'.
- Initial patch by Merlijn van Deen.
+- Issue #21801: Validate that __signature__ is None or an instance of Signature.
-- Issue #19839: Fix regression in bz2 module's handling of non-bzip2 data at
- EOF, and analogous bug in lzma module.
+- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler
+ due to possible uninitialized _config_vars.
-- Issue #19881: Fix pickling bug where cpickle would emit bad pickle data for
- large bytes string (i.e., with size greater than 2**32-1).
+- Issue #21323: Fix http.server to again handle scripts in CGI subdirectories,
+ broken by the fix for security issue #19435. Patch by Zach Byrne.
-- Issue #19138: doctest's IGNORE_EXCEPTION_DETAIL now allows a match when
- no exception detail exists (no colon following the exception's name, or
- a colon does follow but no text follows the colon).
+- Issue #22733: Fix ffi_prep_args not zero-extending argument values correctly
+ on 64-bit Windows.
-- Issue #19927: Add __eq__ to path-based loaders in importlib.
+- Issue #23302: Default to TCP_NODELAY=1 upon establishing an HTTPConnection.
+ Removed use of hard-coded MSS as it's an optimization that's no longer needed
+ with Nagle disabled.
-- Issue #19827: On UNIX, setblocking() and settimeout() methods of
- socket.socket can now avoid a second syscall if the ioctl() function can be
- used, or if the non-blocking flag of the socket is unchanged.
+IDLE
+----
-- Issue #19785: smtplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- Issue #20577: Configuration of the max line length for the FormatParagraph
+ extension has been moved from the General tab of the Idle preferences dialog
+ to the FormatParagraph tab of the Config Extensions dialog.
+ Patch by Tal Einat.
-- Issue #19784: poplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- Issue #16893: Update Idle doc chapter to match current Idle and add new
+ information.
-- Issue #19783: nntplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- Issue #3068: Add Idle extension configuration dialog to Options menu.
+ Changes are written to HOME/.idlerc/config-extensions.cfg.
+ Original patch by Tal Einat.
-- Issue #19782: imaplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- Issue #16233: A module browser (File : Class Browser, Alt+C) requires a
+ editor window with a filename. When Class Browser is requested otherwise,
+ from a shell, output window, or 'Untitled' editor, Idle no longer displays
+ an error box. It now pops up an Open Module box (Alt+M). If a valid name
+ is entered and a module is opened, a corresponding browser is also opened.
-- Issue #20123: Fix pydoc.synopsis() for "binary" modules.
+- Issue #4832: Save As to type Python files automatically adds .py to the
+ name you enter (even if your system does not display it). Some systems
+ automatically add .txt when type is Text files.
-- Issue #19834: Support unpickling of exceptions pickled by Python 2.
+- Issue #21986: Code objects are not normally pickled by the pickle module.
+ To match this, they are no longer pickled when running under Idle.
-- Issue #19781: ftplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- Issue #17390: Adjust Editor window title; remove 'Python',
+ move version to end.
-- Issue #19509: Add SSLContext.check_hostname to match the peer's certificate
- with server_hostname on handshake.
+- Issue #14105: Idle debugger breakpoints no longer disappear
+ when inseting or deleting lines.
-- Issue #15798: Fixed subprocess.Popen() to no longer fail if file
- descriptor 0, 1 or 2 is closed.
+- Issue #17172: Turtledemo can now be run from Idle.
+ Currently, the entry is on the Help menu, but it may move to Run.
+ Patch by Ramchandra Apt and Lita Cho.
-- Issue #17897: Optimized unpickle prefetching.
+- Issue #21765: Add support for non-ascii identifiers to HyperParser.
-- Issue #3693: Make the error message more helpful when the array.array()
- constructor is given a str. Move the array module typecode documentation to
- the docstring of the constructor.
+- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav
+ Heblikar.
-- Issue #19088: Fixed incorrect caching of the copyreg module in
- object.__reduce__() and object.__reduce_ex__().
+- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster.
-- Issue #19698: Removed exec_module() methods from
- importlib.machinery.BuiltinImporter and ExtensionFileLoader.
+- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar.
-- Issue #18864: Added a setter for ModuleSpec.has_location.
+- Issue #21686: add unittest for HyperParser. Original patch by Saimadhav
+ Heblikar.
-- Fixed _pickle.Unpickler to not fail when loading empty strings as
- persistent IDs.
+- Issue #12387: Add missing upper(lower)case versions of default Windows key
+ bindings for Idle so Caps Lock does not disable them. Patch by Roger Serwy.
-- Issue #11480: Fixed copy.copy to work with classes with custom metaclasses.
- Patch by Daniel Urban.
+- Issue #21695: Closing a Find-in-files output window while the search is
+ still in progress no longer closes Idle.
-- Issue #6477: Added support for pickling the types of built-in singletons
- (i.e., Ellipsis, NotImplemented, None).
+- Issue #18910: Add unittest for textView. Patch by Phil Webster.
-- Issue #19713: Add remaining PEP 451-related deprecations and move away
- from using find_module/find_loaer/load_module.
+- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar.
-- Issue #19708: Update pkgutil to use the new importer APIs.
+- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster.
-- Issue #19703: Update pydoc to use the new importer APIs.
+- Issue #21477: htest.py - Improve framework, complete set of tests.
+ Patches by Saimadhav Heblikar
-- Issue #19851: Fixed a regression in reloading sub-modules.
+- Issue #18104: Add idlelib/idle_test/htest.py with a few sample tests to begin
+ consolidating and improving human-validated tests of Idle. Change other files
+ as needed to work with htest. Running the module as __main__ runs all tests.
-- ssl.create_default_context() sets OP_NO_COMPRESSION to prevent CRIME.
+- Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation.
-- Issue #19802: Add socket.SO_PRIORITY.
+- Issue #21284: Paragraph reformat test passes after user changes reformat width.
-- Issue #11508: Fixed uuid.getnode() and uuid.uuid1() on environment with
- virtual interface. Original patch by Kent Frazier.
+- Issue #17654: Ensure IDLE menus are customized properly on OS X for
+ non-framework builds and for all variants of Tk.
-- Issue #11489: JSON decoder now accepts lone surrogates.
+- Issue #23180: Rename IDLE "Windows" menu item to "Window".
+ Patch by Al Sweigart.
-- Issue #19545: Avoid chained exceptions while passing stray % to
- time.strptime(). Initial patch by Claudiu Popa.
+Build
+-----
-IDLE
-----
+- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure
+ script.
-- Issue #20058: sys.stdin.readline() in IDLE now always returns only one line.
+- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support
+ SSL 3.
-- Issue #19481: print() of string subclass instance in IDLE no longer hangs.
+- Issue #22592: Drop support of the Borland C compiler to build Python. The
+ distutils module still supports it to build extensions.
-- Issue #18270: Prevent possible IDLE AttributeError on OS X when no initial
- shell window is present.
+- Issue #22591: Drop support of MS-DOS, especially of the DJGPP compiler
+ (MS-DOS port of GCC).
-Tests
------
+- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by
+ Jonathan Hosmer.
-- Issue #20055: Fix test_shutil under Windows with symlink privileges held.
- Patch by Vajrasky Kok.
+- Issue #22359: Remove incorrect uses of recursive make. Patch by Jonas
+ Wagner.
-- Issue #20070: Don't run test_urllib2net when network resources are not
- enabled.
+- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and
+ above. Patch by Zachary Turner.
-- Issue #19938: Re-enabled test_bug_1333982 in test_dis, which had been
- disabled since 3.0 due to the changes in listcomp handling.
+- Issue #18093: the programs that embed the CPython runtime are now in a
+ separate "Programs" directory, rather than being kept in the Modules
+ directory.
-- Issue #19320: test_tcl no longer fails when wantobjects is false.
+- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/
+ now display special message when and only when there are failures.
-- Issue #19919: Fix flaky SSL test. connect_ex() sometimes returns
- EWOULDBLOCK on Windows or VMs hosted on Windows.
+- Issue #21141: The Windows build process no longer attempts to find Perl,
+ instead relying on OpenSSL source being configured and ready to build. The
+ ``PCbuild\build_ssl.py`` script has been re-written and re-named to
+ ``PCbuild\prepare_ssl.py``, and takes care of configuring OpenSSL source
+ for both 32 and 64 bit platforms. OpenSSL sources obtained from
+ svn.python.org will always be pre-configured and ready to build.
-- Issue #19912: Added tests for ntpath.splitunc().
+- Issue #21037: Add a build option to enable AddressSanitizer support.
-- Issue #19828: Fixed test_site when the whole suite is run with -S.
+- Issue #19962: The Windows build process now creates "python.bat" in the
+ root of the source tree, which passes all arguments through to the most
+ recently built interpreter.
-- Issue #19928: Implemented a test for repr() of cell objects.
+- Issue #21285: Refactor and fix curses configure check to always search
+ in a ncursesw directory.
-- Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and
- test_statistics when python is run with -OO.
+- Issue #15234: For BerkelyDB and Sqlite, only add the found library and
+ include directories if they aren't already being searched. This avoids
+ an explicit runtime library dependency.
-- Issue #19926: Removed unneeded test_main from test_abstract_numbers.
- Patch by Vajrasky Kok.
+- Issue #17861: Tools/scripts/generate_opcode_h.py automatically regenerates
+ Include/opcode.h from Lib/opcode.py if the later gets any change.
-- Issue #19572: More skipped tests explicitly marked as skipped.
+- Issue #20644: OS X installer build support for documentation build changes
+ in 3.4.1: assume externally supplied sphinx-build is available in /usr/bin.
-- Issue #19595, #19987: Re-enabled a long-disabled test in test_winsound.
+- Issue #20022: Eliminate use of deprecated bundlebuilder in OS X builds.
-- Issue #19588: Fixed tests in test_random that were silently skipped most
- of the time. Patch by Julian Gindi.
+- Issue #15968: Incorporated Tcl, Tk, and Tix builds into the Windows build
+ solution.
-Build
------
+- Issue #17095: Fix Modules/Setup *shared* support.
-- Issue #19728: Enable pip installation by default on Windows.
+- Issue #21811: Anticipated fixes to support OS X versions > 10.9.
-- Issue #16136: Remove VMS support
+- Issue #21166: Prevent possible segfaults and other random failures of
+ python --generate-posix-vars in pybuilddir.txt build target.
-- Issue #18215: Add script Tools/ssl/test_multiple_versions.py to compile and
- run Python's unit tests with multiple versions of OpenSSL.
+- Issue #18096: Fix library order returned by python-config.
-- Issue #19922: define _INCLUDE__STDC_A1_SOURCE in HP-UX to include mbstate_t
- for mbrtowc().
+- Issue #17219: Add library build dir for Python extension cross-builds.
-- Issue #19788: kill_python(_d).exe is now run as a PreBuildEvent on the
- pythoncore sub-project. This should prevent build errors due a previous
- build's python(_d).exe still running.
+- Issue #22919: Windows build updated to support VC 14.0 (Visual Studio 2015),
+ which will be used for the official release.
-Documentation
--------------
+- Issue #21236: Build _msi.pyd with cabinet.lib instead of fci.lib
-- Issue #20265: Updated some parts of the Using Windows document.
+- Issue #17128: Use private version of OpenSSL for OS X 10.5+ installer.
-- Issue #20266: Updated some parts of the Windows FAQ.
+C API
+-----
-- Issue #20255: Updated the about and bugs pages.
+- Issue #14203: Remove obsolete support for view==NULL in PyBuffer_FillInfo(),
+ bytearray_getbuffer(), bytesiobuf_getbuffer() and array_buffer_getbuf().
+ All functions now raise BufferError in that case.
-- Issue #20253: Fixed a typo in the ipaddress docs that advertised an
- illegal attribute name. Found by INADA Naoki.
+- Issue #22445: PyBuffer_IsContiguous() now implements precise contiguity
+ tests, compatible with NumPy's NPY_RELAXED_STRIDES_CHECKING compilation
+ flag. Previously the function reported false negatives for corner cases.
-- Issue #18840: Introduce the json module in the tutorial, and de-emphasize
- the pickle module.
+- Issue #22079: PyType_Ready() now checks that statically allocated type has
+ no dynamically allocated bases.
-- Issue #19845: Updated the Compiling Python on Windows section.
+- Issue #22453: Removed non-documented macro PyObject_REPR().
-- Issue #19795: Improved markup of True/False constants.
+- Issue #18395: Rename ``_Py_char2wchar()`` to :c:func:`Py_DecodeLocale`,
+ rename ``_Py_wchar2char()`` to :c:func:`Py_EncodeLocale`, and document
+ these functions.
-Tools/Demos
------------
+- Issue #21233: Add new C functions: PyMem_RawCalloc(), PyMem_Calloc(),
+ PyObject_Calloc(), _PyObject_GC_Calloc(). bytes(int) is now using
+ ``calloc()`` instead of ``malloc()`` for large objects which is faster and
+ use less memory.
-- Issue #19659: Added documentation for Argument Clinic.
+- Issue #20942: PyImport_ImportFrozenModuleObject() no longer sets __file__ to
+ match what importlib does; this affects _frozen_importlib as well as any
+ module loaded using imp.init_frozen().
-- Issue #19976: Argument Clinic METH_NOARGS functions now always
- take two parameters.
+Documentation
+-------------
+- Issue #19548: Update the codecs module documentation to better cover the
+ distinction between text encodings and other codecs, together with other
+ clarifications. Patch by Martin Panter.
-What's New in Python 3.4.0 Beta 1?
-==================================
+- Issue #22394: Doc/Makefile now supports ``make venv PYTHON=../python`` to
+ create a venv for generating the documentation, e.g.,
+ ``make html PYTHON=venv/bin/python3``.
-Release date: 2013-11-24
+- Issue #21514: The documentation of the json module now refers to new JSON RFC
+ 7159 instead of obsoleted RFC 4627.
-Core and Builtins
------------------
+- Issue #21777: The binary sequence methods on bytes and bytearray are now
+ documented explicitly, rather than assuming users will be able to derive
+ the expected behaviour from the behaviour of the corresponding str methods.
-- Use the repr of a module name in more places in import, especially
- exceptions.
+- Issue #6916: undocument deprecated asynchat.fifo class.
-- Issue #19619: str.encode, bytes.decode and bytearray.decode now use an
- internal API to throw LookupError for known non-text encodings, rather
- than attempting the encoding or decoding operation and then throwing a
- TypeError for an unexpected output type. (The latter mechanism remains
- in place for third party non-text encodings)
+- Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make
+ it much more comparable to ``Doc/Makefile``.
-- Issue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'.
- Python now uses SipHash24 on all major platforms.
+- Issue #21312: Update the thread_foobar.h template file to include newer
+ threading APIs. Patch by Jack McCracken.
-- Issue #12892: The utf-16* and utf-32* encoders no longer allow surrogate code
- points (U+D800-U+DFFF) to be encoded. The utf-32* decoders no longer decode
- byte sequences that correspond to surrogate code points. The surrogatepass
- error handler now works with the utf-16* and utf-32* codecs. Based on
- patches by Victor Stinner and Kang-Hao (Kenny) Lu.
+- Issue #21043: Remove the recommendation for specific CA organizations and to
+ mention the ability to load the OS certificates.
-- Issue #17806: Added keyword-argument support for "tabsize" to
- str/bytes.expandtabs().
+- Issue #20765: Add missing documentation for PurePath.with_name() and
+ PurePath.with_suffix().
-- Issue #17828: Output type errors in str.encode(), bytes.decode() and
- bytearray.decode() now direct users to codecs.encode() or codecs.decode()
- as appropriate.
+- Issue #19407: New package installation and distribution guides based on
+ the Python Packaging Authority tools. Existing guides have been retained
+ as legacy links from the distutils docs, as they still contain some
+ required reference material for tool developers that isn't recorded
+ anywhere else.
-- Issue #17828: The interpreter now attempts to chain errors that occur in
- codec processing with a replacement exception of the same type that
- includes the codec name in the error message. It ensures it only does this
- when the creation of the replacement exception won't lose any information.
+- Issue #19697: Document cases where __main__.__spec__ is None.
-- Issue #19466: Clear the frames of daemon threads earlier during the
- Python shutdown to call objects destructors. So "unclosed file" resource
- warnings are now corretly emitted for daemon threads.
+Tests
+-----
-- Issue #19514: Deduplicate some _Py_IDENTIFIER declarations.
- Patch by Andrei Dorian Duma.
+- Issue #18982: Add tests for CLI of the calendar module.
-- Issue #17936: Fix O(n**2) behaviour when adding or removing many subclasses
- of a given type.
+- Issue #19548: Added some additional checks to test_codecs to ensure that
+ statements in the updated documentation remain accurate. Patch by Martin
+ Panter.
-- Issue #19428: zipimport now handles errors when reading truncated or invalid
- ZIP archive.
+- Issue #22838: All test_re tests now work with unittest test discovery.
-- Issue #18408: Add a new PyFrame_FastToLocalsWithError() function to handle
- exceptions when merging fast locals into f_locals of a frame.
- PyEval_GetLocals() now raises an exception and return NULL on failure.
+- Issue #22173: Update lib2to3 tests to use unittest test discovery.
-- Issue #19369: Optimized the usage of __length_hint__().
+- Issue #16000: Convert test_curses to use unittest.
-- Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the
- Python executable and not removed by the linker's optimizer.
+- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not
+ present. Patch by Remi Pointel.
-- Issue #19306: Add extra hints to the faulthandler module's stack
- dumps that these are "upside down".
+- Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier
+ de Gaye.
-Library
--------
+- Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it
+ now uses unittest test discovery to find its tests.
-- Issue #3158: doctest can now find doctests in functions and methods
- written in C.
+- Issue #22104: regrtest.py no longer holds a reference to the suite of tests
+ loaded from test modules that don't define test_main().
-- Issue #13477: Added command line interface to the tarfile module.
- Original patch by Berker Peksag.
+- Issue #22111: Assorted cleanups in test_imaplib. Patch by Milan Oberkirch.
-- Issue #19674: inspect.signature() now produces a correct signature
- for some builtins.
+- Issue #22002: Added ``load_package_tests`` function to test.support and used
+ it to implement/augment test discovery in test_asyncio, test_email,
+ test_importlib, test_json, and test_tools.
-- Issue #19722: Added opcode.stack_effect(), which
- computes the stack effect of bytecode instructions.
+- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks
+ to William Orr.
-- Issue #19735: Implement private function ssl._create_stdlib_context() to
- create SSLContext objects in Python's stdlib module. It provides a single
- configuration point and makes use of SSLContext.load_default_certs().
+- Issue #21918: Converted test_tools from a module to a package containing
+ separate test files for each tested script.
-- Issue #16203: Add re.fullmatch() function and regex.fullmatch() method,
- which anchor the pattern at both ends of the string to match.
- Original patch by Matthew Barnett.
+- Issue #9554: Use modern unittest features in test_argparse. Initial patch by
+ Denver Coneybeare and Radu Voicilas.
-- Issue #13592: Improved the repr for regular expression pattern objects.
- Based on patch by Hugo Lopes Tavares.
+- Issue #20155: Changed HTTP method names in failing tests in test_httpservers
+ so that packet filtering software (specifically Windows Base Filtering Engine)
+ does not interfere with the transaction semantics expected by the tests.
-- Issue #19641: Added the audioop.byteswap() function to convert big-endian
- samples to little-endian and vice versa.
+- Issue #19493: Refactored the ctypes test package to skip tests explicitly
+ rather than silently.
-- Issue #15204: Deprecated the 'U' mode in file-like objects.
+- Issue #18492: All resources are now allowed when tests are not run by
+ regrtest.py.
-- Issue #17810: Implement PEP 3154, pickle protocol 4.
+- Issue #21634: Fix pystone micro-benchmark: use floor division instead of true
+ division to benchmark integers instead of floating point numbers. Set pystone
+ version to 1.2. Patch written by Lennart Regebro.
-- Issue #19668: Added support for the cp1125 encoding.
+- Issue #21605: Added tests for Tkinter images.
-- Issue #19689: Add ssl.create_default_context() factory function. It creates
- a new SSLContext object with secure default settings.
+- Issue #21493: Added test for ntpath.expanduser(). Original patch by
+ Claudiu Popa.
-- Issue #19727: os.utime(..., None) is now potentially more precise
- under Windows.
+- Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok.
-- Issue #17201: ZIP64 extensions now are enabled by default. Patch by
- William Mallard.
+- Issue #21522: Added Tkinter tests for Listbox.itemconfigure(),
+ PanedWindow.paneconfigure(), and Menu.entryconfigure().
-- Issue #19292: Add SSLContext.load_default_certs() to load default root CA
- certificates from default stores or system stores. By default the method
- loads CA certs for authentication of server certs.
+- Issue #17756: Fix test_code test when run from the installed location.
-- Issue #19673: Add pathlib to the stdlib as a provisional module (PEP 428).
+- Issue #17752: Fix distutils tests when run from the installed location.
-- Issue #16596: pdb in a generator now properly skips over yield and
- yield from rather than stepping out of the generator into its
- caller. (This is essential for stepping through asyncio coroutines.)
+- Issue #18604: Consolidated checks for GUI availability. All platforms now
+ at least check whether Tk can be instantiated when the GUI resource is
+ requested.
-- Issue #17916: Added dis.Bytecode.from_traceback() and
- dis.Bytecode.current_offset to easily display "current instruction"
- markers in the new disassembly API (Patch by Claudiu Popa).
+- Issue #21275: Fix a socket test on KFreeBSD.
-- Issue #19552: venv now supports bootstrapping pip into virtual environments
+- Issue #21223: Pass test_site/test_startup_imports when some of the extensions
+ are built as builtins.
-- Issue #17134: Finalize interface to Windows' certificate store. Cert and
- CRL enumeration are now two functions. enum_certificates() also returns
- purpose flags as set of OIDs.
+- Issue #20635: Added tests for Tk geometry managers.
-- Issue #19555: Restore sysconfig.get_config_var('SO'), (and the distutils
- equivalent) with a DeprecationWarning pointing people at $EXT_SUFFIX.
+- Add test case for freeze.
-- Issue #8813: Add SSLContext.verify_flags to change the verification flags
- of the context in order to enable certification revocation list (CRL)
- checks or strict X509 rules.
+- Issue #20743: Fix a reference leak in test_tcl.
-- Issue #18294: Fix the zlib module to make it 64-bit safe.
+- Issue #21097: Move test_namespace_pkgs into test_importlib.
-- Issue #19682: Fix compatibility issue with old version of OpenSSL that
- was introduced by Issue #18379.
+- Issue #21503: Use test_both() consistently in test_importlib.
-- Issue #14455: plistlib now supports binary plists and has an updated API.
+- Issue #20939: Avoid various network test failures due to new
+ redirect of http://www.python.org/ to https://www.python.org:
+ use http://www.example.com instead.
-- Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on
- big-endian platforms.
+- Issue #20668: asyncio tests no longer rely on tests.txt file.
+ (Patch by Vajrasky Kok)
-- Issue #18379: SSLSocket.getpeercert() returns CA issuer AIA fields, OCSP
- and CRL distribution points.
+- Issue #21093: Prevent failures of ctypes test_macholib on OS X if a
+ copy of libz exists in $HOME/lib or /usr/local/lib.
-- Issue #18138: Implement cadata argument of SSLContext.load_verify_location()
- to load CA certificates and CRL from memory. It supports PEM and DER
- encoded strings.
+- Issue #22770: Prevent some Tk segfaults on OS X when running gui tests.
-- Issue #18775: Add name and block_size attribute to HMAC object. They now
- provide the same API elements as non-keyed cryptographic hash functions.
+- Issue #23211: Workaround test_logging failure on some OS X 10.6 systems.
-- Issue #17276: MD5 as default digestmod for HMAC is deprecated. The HMAC
- module supports digestmod names, e.g. hmac.HMAC('sha1').
+- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level
+ values (like 0.9.8zc).
-- Issue #19449: in csv's writerow, handle non-string keys when generating the
- error message that certain keys are not in the 'fieldnames' list.
+Tools/Demos
+-----------
-- Issue #13633: Added a new convert_charrefs keyword arg to HTMLParser that,
- when True, automatically converts all character references.
+- Issue #22314: pydoc now works when the LINES environment variable is set.
-- Issue #2927: Added the unescape() function to the html module.
+- Issue #22615: Argument Clinic now supports the "type" argument for the
+ int converter. This permits using the int converter with enums and
+ typedefs.
-- Issue #8402: Added the escape() function to the glob module.
+- Issue #20076: The makelocalealias.py script no longer ignores UTF-8 mapping.
-- Issue #17618: Add Base85 and Ascii85 encoding/decoding to the base64 module.
+- Issue #20079: The makelocalealias.py script now can parse the SUPPORTED file
+ from glibc sources and supports command line options for source paths.
-- Issue #19634: time.strftime("%y") now raises a ValueError on AIX when given a
- year before 1900.
+- Issue #22201: Command-line interface of the zipfile module now correctly
+ extracts ZIP files with directory entries. Patch by Ryan Wilson.
-- Fix test.support.bind_port() to not cause an error when Python was compiled
- on a system with SO_REUSEPORT defined in the headers but run on a system
- with an OS kernel that does not support that reasonably new socket option.
+- Issue #22120: For functions using an unsigned integer return converter,
+ Argument Clinic now generates a cast to that type for the comparison
+ to -1 in the generated code. (This supresses a compilation warning.)
-- Fix compilation error under gcc of the ctypes module bundled libffi for arm.
+- Issue #18974: Tools/scripts/diff.py now uses argparse instead of optparse.
-- Issue #19448: Add private API to SSL module to lookup ASN.1 objects by OID,
- NID, short name and long name.
+- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3.
+ Patch by Zachary Ware.
-- Issue #19282: dbm.open now supports the context management protocol. (Inital
- patch by Claudiu Popa)
+- Issue #21629: Fix Argument Clinic's "--converters" feature.
-- Issue #8311: Added support for writing any bytes-like objects in the aifc,
- sunau, and wave modules.
+- Add support for ``yield from`` to 2to3.
-- Issue #5202: Added support for unseekable files in the wave module.
+- Add support for the PEP 465 matrix multiplication operator to 2to3.
-- Issue #19544 and Issue #1180: Restore global option to ignore
- ~/.pydistutils.cfg in Distutils, accidentally removed in backout of
- distutils2 changes.
+- Issue #16047: Fix module exception list and __file__ handling in freeze.
+ Patch by Meador Inge.
-- Issue #19523: Closed FileHandler leak which occurred when delay was set.
+- Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge.
-- Issue #19544 and Issue #6516: Restore support for --user and --group
- parameters to sdist command accidentally rolled back as part of the
- distutils2 rollback.
+- Issue #20535: PYTHONWARNING no longer affects the run_tests.py script.
+ Patch by Arfrever Frehtes Taifersar Arahesis.
-- Issue #13674: Prevented time.strftime from crashing on Windows when given
- a year before 1900 and a format of %y.
+Windows
+-------
-- Issue #19406: implementation of the ensurepip module (part of PEP 453).
- Patch by Donald Stufft and Nick Coghlan.
+- Issue #23260: Update Windows installer
-- Issue #19544 and Issue #6286: Restore use of urllib over http allowing use
- of http_proxy for Distutils upload command, a feature accidentally lost
- in the rollback of distutils2.
+- The bundled version of Tcl/Tk has been updated to 8.6.3. The most visible
+ result of this change is the addition of new native file dialogs when
+ running on Windows Vista or newer. See Tcl/Tk's TIP 432 for more
+ information. Also, this version of Tcl/Tk includes support for Windows 10.
-- Issue #19544 and Issue #7457: Restore the read_pkg_file method to
- distutils.dist.DistributionMetadata accidentally removed in the undo of
- distutils2.
+- Issue #17896: The Windows build scripts now expect external library sources
+ to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``.
-- Issue #16685: Added support for any bytes-like objects in the audioop module.
- Removed support for strings.
+- Issue #17717: The Windows build scripts now use a copy of NASM pulled from
+ svn.python.org to build OpenSSL.
-- Issue #7171: Add Windows implementation of ``inet_ntop`` and ``inet_pton``
- to socket module. Patch by Atsuo Ishimoto.
+- Issue #21907: Improved the batch scripts provided for building Python.
-- Issue #19261: Added support for writing 24-bit samples in the sunau module.
+- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j.
-- Issue #1097797: Added CP273 encoding, used on IBM mainframes in
- Germany and Austria. Mapping provided by Michael Bierenfeld.
+- Issue #10747: Use versioned labels in the Windows start menu.
+ Patch by Olive Kilburn.
-- Issue #1575020: Fixed support of 24-bit wave files on big-endian platforms.
+- Issue #22980: .pyd files with a version and platform tag (for example,
+ ".cp35-win32.pyd") will now be loaded in preference to those without tags.
-- Issue #19378: Fixed a number of cases in the dis module where the new
- "file" parameter was not being honoured correctly
+
-- Issue #19378: Removed the "dis.Bytecode.show_info" method
+What's New in Python 3.4.0?
+===========================
-- Issue #19378: Renamed the "dis.Bytecode.display_code" method to
- "dis.Bytecode.dis" and converted it to returning a string rather than
- printing output.
+Release date: 2014-03-16
-- Issue #19378: the "line_offset" parameter in the new "dis.get_instructions"
- API has been renamed to "first_line" (and the default value and usage
- changed accordingly). This should reduce confusion with the more common use
- of "offset" in the dis docs to refer to bytecode offsets.
+Library
+-------
-- Issue #18678: Corrected spwd struct member names in spwd module:
- sp_nam->sp_namp, and sp_pwd->sp_pwdp. The old names are kept as extra
- structseq members, for backward compatibility.
+- Issue #20939: Fix test_geturl failure in test_urllibnet due to
+ new redirect of http://www.python.org/ to https://www.python.org.
-- Issue #6157: Fixed tkinter.Text.debug(). tkinter.Text.bbox() now raises
- TypeError instead of TclError on wrong number of arguments. Original patch
- by Guilherme Polo.
-
-- Issue #10197: Rework subprocess.get[status]output to use subprocess
- functionality and thus to work on Windows. Patch by Nick Coghlan
-
-- Issue #6160: The bbox() method of tkinter.Spinbox now returns a tuple of
- integers instead of a string. Based on patch by Guilherme Polo.
-
-- Issue #19403: contextlib.redirect_stdout is now reentrant
-
-- Issue #19286: Directories in ``package_data`` are no longer added to
- the filelist, preventing failure outlined in the ticket.
-
-- Issue #19480: HTMLParser now accepts all valid start-tag names as defined
- by the HTML5 standard.
-
-- Issue #15114: The html.parser module now raises a DeprecationWarning when the
- strict argument of HTMLParser or the HTMLParser.error method are used.
-
-- Issue #19410: Undo the special-casing removal of '' for
- importlib.machinery.FileFinder.
-
-- Issue #19424: Fix the warnings module to accept filename containing surrogate
- characters.
-
-- Issue #19435: Fix directory traversal attack on CGIHttpRequestHandler.
-
-- Issue #19227: Remove pthread_atfork() handler. The handler was added to
- solve #18747 but has caused issues.
-
-- Issue #19420: Fix reference leak in module initalization code of
- _hashopenssl.c
-
-- Issue #19329: Optimized compiling charsets in regular expressions.
-
-- Issue #19227: Try to fix deadlocks caused by re-seeding then OpenSSL
- pseudo-random number generator on fork().
-
-- Issue #16037: HTTPMessage.readheaders() raises an HTTPException when more than
- 100 headers are read. Adapted from patch by Jyrki Pulliainen.
-
-- Issue #16040: CVE-2013-1752: nntplib: Limit maximum line lengths to 2048 to
- prevent readline() calls from consuming too much memory. Patch by Jyrki
- Pulliainen.
-
-- Issue #16041: CVE-2013-1752: poplib: Limit maximum line lengths to 2048 to
- prevent readline() calls from consuming too much memory. Patch by Jyrki
- Pulliainen.
-
-- Issue #17997: Change behavior of ``ssl.match_hostname()`` to follow RFC 6125,
- for security reasons. It now doesn't match multiple wildcards nor wildcards
- inside IDN fragments.
-
-- Issue #16039: CVE-2013-1752: Change use of readline in imaplib module to limit
- line length. Patch by Emil Lind.
-
-- Issue #19330: the unnecessary wrapper functions have been removed from the
- implementations of the new contextlib.redirect_stdout and
- contextlib.suppress context managers, which also ensures they provide
- reasonable help() output on instances
-
-- Issue #19393: Fix symtable.symtable function to not be confused when there are
- functions or classes named "top".
-
-- Issue #18685: Restore re performance to pre-PEP 393 levels.
-
-- Issue #19339: telnetlib module is now using time.monotonic() when available
- to compute timeout.
-
-- Issue #19399: fix sporadic test_subprocess failure.
-
-- Issue #13234: Fix os.listdir to work with extended paths on Windows.
- Patch by Santoso Wijaya.
-
-- Issue #19375: The site module adding a "site-python" directory to sys.path,
- if it exists, is now deprecated.
-
-- Issue #19379: Lazily import linecache in the warnings module, to make
- startup with warnings faster until a warning gets printed.
-
-- Issue #19288: Fixed the "in" operator of dbm.gnu databases for string
- argument. Original patch by Arfrever Frehtes Taifersar Arahesis.
-
-- Issue #19287: Fixed the "in" operator of dbm.ndbm databases for string
- argument. Original patch by Arfrever Frehtes Taifersar Arahesis.
-
-- Issue #19327: Fixed the working of regular expressions with too big charset.
-
-- Issue #17400: New 'is_global' attribute for ipaddress to tell if an address
- is allocated by IANA for global or private networks.
-
-- Issue #19350: Increasing the test coverage of macurl2path. Patch by Colin
- Williams.
-
-- Issue #19365: Optimized the parsing of long replacement string in re.sub*()
- functions.
-
-- Issue #19352: Fix unittest discovery when a module can be reached
- through several paths (e.g. under Debian/Ubuntu with virtualenv).
-
-- Issue #15207: Fix mimetypes to read from correct part of Windows registry
- Original patch by Dave Chambers
-
-- Issue #16595: Add prlimit() to resource module.
-
-- Issue #19324: Expose Linux-specific constants in resource module.
-
-- Load SSL's error strings in hashlib.
-
-- Issue #18527: Upgrade internal copy of zlib to 1.2.8.
-
-- Issue #19274: Add a filterfunc parameter to PyZipFile.writepy.
-
-- Issue #8964: fix platform._sys_version to handle IronPython 2.6+.
- Patch by Martin Matusiak.
-
-- Issue #19413: Restore pre-3.3 reload() semantics of re-finding modules.
-
-- Issue #18958: Improve error message for json.load(s) while passing a string
- that starts with a UTF-8 BOM.
-
-- Issue #19307: Improve error message for json.load(s) while passing objects
- of the wrong type.
-
-- Issue #16038: CVE-2013-1752: ftplib: Limit amount of data read by
- limiting the call to readline(). Original patch by Michał
- Jastrzębski and Giampaolo Rodola.
-
-- Issue #17087: Improved the repr for regular expression match objects.
-
-Tests
------
-
-- Issue #19664: test_userdict's repr test no longer depends on the order
- of dict elements.
-
-- Issue #19440: Clean up test_capi by removing an unnecessary __future__
- import, converting from test_main to unittest.main, and running the
- _testcapi module tests as subTests of a unittest TestCase method.
-
-- Issue #19378: the main dis module tests are now run with both stdout
- redirection *and* passing an explicit file parameter
-
-- Issue #19378: removed the not-actually-helpful assertInstructionMatches
- and assertBytecodeExactlyMatches helpers from bytecode_helper
-
-- Issue #18702: All skipped tests now reported as skipped.
-
-- Issue #19439: interpreter embedding tests are now executed on Windows
- (Patch by Zachary Ware)
-
-- Issue #19085: Added basic tests for all tkinter widget options.
-
-- Issue #19384: Fix test_py_compile for root user, patch by Claudiu Popa.
-
-Documentation
--------------
-
-- Issue #18326: Clarify that list.sort's arguments are keyword-only. Also,
- attempt to reduce confusion in the glossary by not saying there are
- different "types" of arguments and parameters.
-
-Build
------
-
-- Issue #19358: "make clinic" now runs the Argument Clinic preprocessor
- over all CPython source files.
-
-- Update SQLite to 3.8.1, xz to 5.0.5, and Tcl/Tk to 8.6.1 on Windows.
-
-- Issue #16632: Enable DEP and ASLR on Windows.
-
-- Issue #17791: Drop PREFIX and EXEC_PREFIX definitions from PC/pyconfig.h
-
-- Add workaround for VS 2010 nmake clean issue. VS 2010 doesn't set up PATH
- for nmake.exe correctly.
-
-- Issue #19550: Implement Windows installer changes of PEP 453 (ensurepip).
-
-- Issue #19520: Fix compiler warning in the _sha3 module on 32bit Windows.
-
-- Issue #19356: Avoid using a C variabled named "_self", it's a reserved
- word in some C compilers.
-
-- Issue #15792: Correct build options on Win64. Patch by Jeremy Kloth.
-
-- Issue #19373: Apply upstream change to Tk 8.5.15 fixing OS X 10.9
- screen refresh problem for OS X installer build.
-
-- Issue #19649: On OS X, the same set of file names are now installed
- in bin directories for all configurations: non-framework vs framework,
- and single arch vs universal builds. pythonx.y-32 is now always
- installed for 64-bit/32-bit universal builds. The obsolete and
- undocumented pythonw* symlinks are no longer installed anywhere.
-
-- Issue #19553: PEP 453 - "make install" and "make altinstall" now install or
- upgrade pip by default, using the bundled pip provided by the new ensurepip
- module. A new configure option, --with-ensurepip[=upgrade|install|no], is
- available to override the default ensurepip "--upgrade" option. The option
- can also be set with "make [alt]install ENSUREPIP=[upgrade|install\no]".
-
-- Issue #19551: PEP 453 - the OS X installer now installs pip by default.
-
-- Update third-party libraries for OS X installers: xz 5.0.3 -> 5.0.5,
- SQLite 3.7.13 -> 3.8.1
-
-- Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.4.0b1.
- Some third-party projects, such as Matplotlib and PIL/Pillow,
- depended on being able to build with Tcl and Tk frameworks in
- /Library/Frameworks.
-
-Tools/Demos
------------
-
-- Issue #19730: Argument Clinic now supports all the existing PyArg
- "format units" as legacy converters, as well as two new features:
- "self converters" and the "version" directive.
-
-- Issue #19552: pyvenv now bootstraps pip into virtual environments by
- default (pass --without-pip to request the old behaviour)
-
-- Issue #19390: Argument Clinic no longer accepts malformed Python
- and C ids.
-
-
-What's New in Python 3.4.0 Alpha 4?
-===================================
-
-Release date: 2013-10-20
-
-Core and Builtins
------------------
-
-- Issue #19301: Give classes and functions that are explicitly marked global a
- global qualname.
-
-- Issue #19279: UTF-7 decoder no longer produces illegal strings.
-
-- Issue #16612: Add "Argument Clinic", a compile-time preprocessor for
- C files to generate argument parsing code. (See PEP 436.)
-
-- Issue #18810: Shift stat calls in importlib.machinery.FileFinder such that
- the code is optimistic that if something exists in a directory named exactly
- like the possible package being searched for that it's in actuality a
- directory.
-
-- Issue #18416: importlib.machinery.PathFinder now treats '' as the cwd and
- importlib.machinery.FileFinder no longer special-cases '' to '.'. This leads
- to modules imported from cwd to now possess an absolute file path for
- __file__ (this does not affect modules specified by path on the CLI but it
- does affect -m/runpy). It also allows FileFinder to be more consistent by not
- having an edge case.
-
-- Issue #4555: All exported C symbols are now prefixed with either
- "Py" or "_Py".
-
-- Issue #19219: Speed up marshal.loads(), and make pyc files slightly
- (5% to 10%) smaller.
-
-- Issue #19221: Upgrade Unicode database to version 6.3.0.
-
-- Issue #16742: The result of the C callback PyOS_ReadlineFunctionPointer must
- now be a string allocated by PyMem_RawMalloc() or PyMem_RawRealloc() (or NULL
- if an error occurred), instead of a string allocated by PyMem_Malloc() or
- PyMem_Realloc().
-
-- Issue #19199: Remove ``PyThreadState.tick_counter`` field
-
-- Fix macro expansion of _PyErr_OCCURRED(), and make sure to use it in at
- least one place so as to avoid regressions.
-
-- Issue #19087: Improve bytearray allocation in order to allow cheap popping
- of data at the front (slice deletion).
-
-- Issue #19014: memoryview.cast() is now allowed on zero-length views.
-
-- Issue #18690: memoryview is now automatically registered with
- collections.abc.Sequence
-
-- Issue #19078: memoryview now correctly supports the reversed builtin
- (Patch by Claudiu Popa)
-
-Library
--------
-
-- Issue #17457: unittest test discovery now works with namespace packages.
- Patch by Claudiu Popa.
-
-- Issue #18235: Fix the sysconfig variables LDSHARED and BLDSHARED under AIX.
- Patch by David Edelsohn.
-
-- Issue #18606: Add the new "statistics" module (PEP 450). Contributed
- by Steven D'Aprano.
-
-- Issue #12866: The audioop module now supports 24-bit samples.
-
-- Issue #19254: Provide an optimized Python implementation of pbkdf2_hmac.
-
-- Issues #19201, Issue #19222, Issue #19223: Add "x" mode (exclusive creation)
- in opening file to bz2, gzip and lzma modules. Patches by Tim Heaney and
- Vajrasky Kok.
-
-- Fix a reference count leak in _sre.
-
-- Issue #19262: Initial check in of the 'asyncio' package (a.k.a. Tulip,
- a.k.a. PEP 3156). There are no docs yet, and the PEP is slightly
- out of date with the code. This module will have *provisional* status
- in Python 3.4.
-
-- Issue #19276: Fixed the wave module on 64-bit big-endian platforms.
-
-- Issue #19266: Rename the new-in-3.4 ``contextlib.ignore`` context manager
- to ``contextlib.suppress`` in order to be more consistent with existing
- descriptions of that operation elsewhere in the language and standard
- library documentation (Patch by Zero Piraeus).
-
-- Issue #18891: Completed the new email package (provisional) API additions
- by adding new classes EmailMessage, MIMEPart, and ContentManager.
-
-- Issue #18281: Unused stat constants removed from `tarfile`.
-
-- Issue #18999: Multiprocessing now supports 'contexts' with the same API
- as the module, but bound to specified start methods.
-
-- Issue #18468: The re.split, re.findall, and re.sub functions and the group()
- and groups() methods of match object now always return a string or a bytes
- object.
-
-- Issue #18725: The textwrap module now supports truncating multiline text.
-
-- Issue #18776: atexit callbacks now display their full traceback when they
- raise an exception.
-
-- Issue #17827: Add the missing documentation for ``codecs.encode`` and
- ``codecs.decode``.
-
-- Issue #19218: Rename collections.abc to _collections_abc in order to
- speed up interpreter start.
-
-- Issue #18582: Add 'pbkdf2_hmac' to the hashlib module. It implements PKCS#5
- password-based key derivation functions with HMAC as pseudorandom function.
-
-- Issue #19131: The aifc module now correctly reads and writes sampwidth of
- compressed streams.
-
-- Issue #19209: Remove import of copyreg from the os module to speed up
- interpreter startup. stat_result and statvfs_result are now hard-coded to
- reside in the os module.
-
-- Issue #19205: Don't import the 're' module in site and sysconfig module to
- speed up interpreter start.
-
-- Issue #9548: Add a minimal "_bootlocale" module that is imported by the
- _io module instead of the full locale module.
-
-- Issue #18764: remove the 'print' alias for the PDB 'p' command so that it no
- longer shadows the print function.
-
-- Issue #19158: a rare race in BoundedSemaphore could allow .release() too
- often.
-
-- Issue #15805: Add contextlib.redirect_stdout().
-
-- Issue #18716: Deprecate the formatter module.
-
-- Issue #10712: 2to3 has a new "asserts" fixer that replaces deprecated names
- of unittest methods (e.g. failUnlessEqual -> assertEqual).
-
-- Issue #18037: 2to3 now escapes '\u' and '\U' in native strings.
-
-- Issue #17839: base64.decodebytes and base64.encodebytes now accept any
- object that exports a 1 dimensional array of bytes (this means the same
- is now also true for base64_codec)
-
-- Issue #19132: The pprint module now supports compact mode.
-
-- Issue #19137: The pprint module now correctly formats instances of set and
- frozenset subclasses.
-
-- Issue #10042: functools.total_ordering now correctly handles
- NotImplemented being returned by the underlying comparison function (Patch
- by Katie Miller)
-
-- Issue #19092: contextlib.ExitStack now correctly reraises exceptions
- from the __exit__ callbacks of inner context managers (Patch by Hrvoje
- Nikšić)
-
-- Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except
- when necessary. Patch by Oscar Benjamin.
-
-- Issue #5845: In site.py, only load readline history from ~/.python_history
- if no history has been read already. This avoids double writes to the
- history file at shutdown.
-
-- Properly initialize all fields of a SSL object after allocation.
-
-- Issue #19095: SSLSocket.getpeercert() now raises ValueError when the
- SSL handshake hasn't been done.
-
-- Issue #4366: Fix building extensions on all platforms when --enable-shared
- is used.
-
-- Issue #19030: Fixed `inspect.getmembers` and `inspect.classify_class_attrs`
- to attempt activating descriptors before falling back to a __dict__ search
- for faulty descriptors. `inspect.classify_class_attrs` no longer returns
- Attributes whose home class is None.
-
-C API
------
-
-- Issue #1772673: The type of `char*` arguments now changed to `const char*`.
-
-- Issue #16129: Added a `Py_SetStandardStreamEncoding` pre-initialization API
- to allow embedding applications like Blender to force a particular
- encoding and error handler for the standard IO streams (initial patch by
- Bastien Montagne)
-
-Tests
------
-
-- Issue #19275: Fix test_site on AMD64 Snow Leopard
-
-- Issue #14407: Fix unittest test discovery in test_concurrent_futures.
-
-- Issue #18919: Unified and extended tests for audio modules: aifc, sunau and
- wave.
-
-- Issue #18714: Added tests for ``pdb.find_function()``.
-
-Documentation
--------------
-
-- Issue #18758: Fixed and improved cross-references.
-
-- Issue #18972: Modernize email examples and use the argparse module in them.
-
-Build
------
-
-- Issue #19130: Correct PCbuild/readme.txt, Python 3.3 and 3.4 require VS 2010.
-
-- Issue #15663: Update OS X 10.6+ installer to use Tcl/Tk 8.5.15.
-
-- Issue #14499: Fix several problems with OS X universal build support:
- 1. ppc arch detection for extension module builds broke with Xcode 5
- 2. ppc arch detection in configure did not work on OS X 10.4
- 3. -sysroot and -arch flags were unnecessarily duplicated
- 4. there was no obvious way to configure an intel-32 only build.
-
-- Issue #19019: Change the OS X installer build script to use CFLAGS instead
- of OPT for special build options. By setting OPT, some compiler-specific
- options like -fwrapv were overridden and thus not used, which could result
- in broken interpreters when building with clang.
-
-
-What's New in Python 3.4.0 Alpha 3?
-===================================
-
-Release date: 2013-09-29
-
-Core and Builtins
------------------
-
-- Issue #18818: The "encodingname" part of PYTHONIOENCODING is now optional.
-
-- Issue #19098: Prevent overflow in the compiler when the recursion limit is set
- absurdly high.
-
-Library
--------
-
-- Issue #18929: `inspect.classify_class_attrs()` now correctly finds class
- attributes returned by `dir()` that are located in the metaclass.
-
-- Issue #18950: Fix miscellaneous bugs in the sunau module.
- Au_read.readframes() now updates current file position and reads correct
- number of frames from multichannel stream. Au_write.writeframesraw() now
- correctly updates current file position. Au_read.getnframes() now returns an
- integer (as in Python 2). Au_read and Au_write now correctly works with file
- object if start file position is not a zero.
-
-- Issue #18594: The fast path for collections.Counter() was never taken
- due to an over-restrictive type check.
-
-- Issue #19053: ZipExtFile.read1() with non-zero argument no more returns empty
- bytes until end of data.
-
-- logging: added support for Unix domain sockets to SocketHandler and
- DatagramHandler.
-
-- Issue #18996: TestCase.assertEqual() now more cleverly shorten differing
- strings in error report.
-
-- Issue #19034: repr() for tkinter.Tcl_Obj now exposes string reperesentation.
-
-- Issue #18978: ``urllib.request.Request`` now allows the method to be
- indicated on the class and no longer sets it to None in ``__init__``.
-
-- Issue #18626: the inspect module now offers a basic command line
- introspection interface (Initial patch by Claudiu Popa)
-
-- Issue #3015: Fixed tkinter with wantobject=False. Any Tcl command call
- returned empty string.
-
-- Issue #19037: The mailbox module now makes all changes to maildir files
- before moving them into place, to avoid race conditions with other programs
- that may be accessing the maildir directory.
-
-- Issue #14984: On POSIX systems, when netrc is called without a filename
- argument (and therefore is reading the user's $HOME/.netrc file), it now
- enforces the same security rules as typical ftp clients: the .netrc file must
- be owned by the user that owns the process and must not be readable by any
- other user.
-
-- Issue #18873: The tokenize module now detects Python source code encoding
- only in comment lines.
-
-- Issue #17764: Enable http.server to bind to a user specified network
- interface. Patch contributed by Malte Swart.
-
-- Issue #18937: Add an assertLogs() context manager to unittest.TestCase
- to ensure that a block of code emits a message using the logging module.
-
-- Issue #17324: Fix http.server's request handling case on trailing '/'. Patch
- contributed by Vajrasky Kok.
-
-- Issue #19018: The heapq.merge() function no longer suppresses IndexError
- in the underlying iterables.
-
-- Issue #18784: The uuid module no longer attempts to load libc via ctypes.CDLL
- if all the necessary functions have already been found in libuuid. Patch by
- Evgeny Sologubov.
-
-- The :envvar:`PYTHONFAULTHANDLER` environment variable now only enables the
- faulthandler module if the variable is non-empty. Same behaviour than other
- variables like :envvar:`PYTHONDONTWRITEBYTECODE`.
-
-- Issue #1565525: New function ``traceback.clear_frames`` will clear
- the local variables of all the stack frames referenced by a traceback
- object.
-
-Tests
------
-
-- Issue #18952: Fix regression in support data downloads introduced when
- test.support was converted to a package. Regression noticed by Zachary
- Ware.
-
-IDLE
-----
-
-- Issue #18873: IDLE now detects Python source code encoding only in comment
- lines.
-
-- Issue #18988: The "Tab" key now works when a word is already autocompleted.
-
-Documentation
--------------
-
-- Issue #17003: Unified the size argument names in the io module with common
- practice.
-
-Build
------
-
-- Issue #18596: Support the use of address sanity checking in recent versions
- of clang and GCC by appropriately marking known false alarms in the small
- object allocator. Patch contributed by Dhiru Kholia.
-
-Tools/Demos
------------
-
-- Issue #18873: 2to3 and the findnocoding.py script now detect Python source
- code encoding only in comment lines.
-
-
-What's New in Python 3.4.0 Alpha 2?
-===================================
-
-Release date: 2013-09-09
-
-Core and Builtins
------------------
-
-- Issue #18942: sys._debugmallocstats() output was damaged on Windows.
-
-- Issue #18571: Implementation of the PEP 446: file descriptors and file
- handles are now created non-inheritable; add functions
- os.get/set_inheritable(), os.get/set_handle_inheritable() and
- socket.socket.get/set_inheritable().
-
-- Issue #11619: The parser and the import machinery do not encode Unicode
- filenames anymore on Windows.
-
-- Issue #18808: Non-daemon threads are now automatically joined when
- a sub-interpreter is shutdown (it would previously dump a fatal error).
-
-- Remove support for compiling on systems without getcwd().
-
-- Issue #18774: Remove last bits of GNU PTH thread code and thread_pth.h.
-
-- Issue #18771: Add optimization to set object lookups to reduce the cost
- of hash collisions. The core idea is to inspect a second key/hash pair
- for each cache line retrieved.
-
-- Issue #16105: When a signal handler fails to write to the file descriptor
- registered with ``signal.set_wakeup_fd()``, report an exception instead
- of ignoring the error.
-
-- Issue #18722: Remove uses of the "register" keyword in C code.
-
-- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions.
-
-- Issue #16499: Add command line option for isolated mode.
-
-- Issue #15301: Parsing fd, uid, and gid parameters for builtins
- in Modules/posixmodule.c is now far more robust.
-
-- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc()
- fail.
-
-- Issue #17934: Add a clear() method to frame objects, to help clean up
- expensive details (local variables) and break reference cycles.
-
-- Issue #18780: %-formatting codes %d, %i, and %u now treat int-subclasses
- as int (displays value of int-subclass instead of str(int-subclass) ).
-
-Library
--------
-
-- Issue #18808: Thread.join() now waits for the underlying thread state to
- be destroyed before returning. This prevents unpredictable aborts in
- Py_EndInterpreter() when some non-daemon threads are still running.
-
-- Issue #18458: Prevent crashes with newer versions of libedit. Its readline
- emulation has changed from 0-based indexing to 1-based like gnu readline.
-
-- Issue #18852: Handle case of ``readline.__doc__`` being ``None`` in the new
- readline activation code in ``site.py``.
-
-- Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in
- the _sre module.
-
-- Issue #18830: inspect.getclasstree() no longer produces duplicate entries even
- when input list contains duplicates.
-
-- Issue #18878: sunau.open now supports the context management protocol. Based on
- patches by Claudiu Popa and R. David Murray.
-
-- Issue #18909: Fix _tkinter.tkapp.interpaddr() on Windows 64-bit, don't cast
- 64-bit pointer to long (32 bits).
-
-- Issue #18876: The FileIO.mode attribute now better reflects the actual mode
- under which the file was opened. Patch by Erik Bray.
-
-- Issue #16853: Add new selectors module.
-
-- Issue #18882: Add threading.main_thread() function.
-
-- Issue #18901: The sunau getparams method now returns a namedtuple rather than
- a plain tuple. Patch by Claudiu Popa.
-
-- Issue #17487: The result of the wave getparams method now is pickleable again.
- Patch by Claudiu Popa.
-
-- Issue #18756: os.urandom() now uses a lazily-opened persistent file
- descriptor, so as to avoid using many file descriptors when run in
- parallel from multiple threads.
-
-- Issue #18418: After fork(), reinit all threads states, not only active ones.
- Patch by A. Jesse Jiryu Davis.
-
-- Issue #17974: Switch unittest from using getopt to using argparse.
-
-- Issue #11798: TestSuite now drops references to own tests after execution.
-
-- Issue #16611: http.cookie now correctly parses the 'secure' and 'httponly'
- cookie flags.
-
-- Issue #11973: Fix a problem in kevent. The flags and fflags fields are now
- properly handled as unsigned.
-
-- Issue #18807: ``pyvenv`` now takes a --copies argument allowing copies
- instead of symlinks even where symlinks are available and the default.
-
-- Issue #18538: ``python -m dis`` now uses argparse for argument processing.
- Patch by Michele Orrù.
-
-- Issue #18394: Close cgi.FieldStorage's optional file.
-
-- Issue #17702: On error, os.environb now suppresses the exception context
- when raising a new KeyError with the original key.
-
-- Issue #16809: Fixed some tkinter incompabilities with Tcl/Tk 8.6.
-
-- Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj
- argument.
-
-- Issue #18324: set_payload now correctly handles binary input. This also
- supersedes the previous fixes for #14360, #1717, and #16564.
-
-- Issue #18794: Add a fileno() method and a closed attribute to select.devpoll
- objects.
-
-- Issue #17119: Fixed integer overflows when processing large strings and tuples
- in the tkinter module.
-
-- Issue #18747: Re-seed OpenSSL's pseudo-random number generator after fork.
- A pthread_atfork() parent handler is used to seed the PRNG with pid, time
- and some stack data.
-
-- Issue #8865: Concurrent invocation of select.poll.poll() now raises a
- RuntimeError exception. Patch by Christian Schubert.
-
-- Issue #18777: The ssl module now uses the new CRYPTO_THREADID API of
- OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function.
-
-- Issue #18768: Correct doc string of RAND_edg(). Patch by Vajrasky Kok.
-
-- Issue #18178: Fix ctypes on BSD. dlmalloc.c was compiled twice which broke
- malloc weak symbols.
-
-- Issue #18709: Fix CVE-2013-4238. The SSL module now handles NULL bytes
- inside subjectAltName correctly. Formerly the module has used OpenSSL's
- GENERAL_NAME_print() function to get the string represention of ASN.1
- strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and
- ``uniformResourceIdentifier`` (URI).
-
-- Issue #18701: Remove support of old CPython versions (<3.0) from C code.
-
-- Issue #18756: Improve error reporting in os.urandom() when the failure
- is due to something else than /dev/urandom not existing (for example,
- exhausting the file descriptor limit).
-
-- Issue #18673: Add O_TMPFILE to os module. O_TMPFILE requires Linux kernel
- 3.11 or newer. It's only defined on system with 3.11 uapi headers, too.
-
-- Issue #18532: Change the builtin hash algorithms' names to lower case names
- as promised by hashlib's documentation.
-
-- Issue #8713: add new spwan and forkserver start methods, and new functions
- get_all_start_methods, get_start_method, and set_start_method, to
- multiprocessing.
-
-- Issue #18405: Improve the entropy of crypt.mksalt().
-
-- Issue #12015: The tempfile module now uses a suffix of 8 random characters
- instead of 6, to reduce the risk of filename collision. The entropy was
- reduced when uppercase letters were removed from the charset used to generate
- random characters.
-
-- Issue #18585: Add :func:`textwrap.shorten` to collapse and truncate a
- piece of text to a given length.
-
-- Issue #18598: Tweak exception message for importlib.import_module() to
- include the module name when a key argument is missing.
-
-- Issue #19151: Fix docstring and use of _get_supported_file_loaders() to
- reflect 2-tuples.
-
-- Issue #19152: Add ExtensionFileLoader.get_filename().
-
-- Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get
- docstrings and ValueError messages. Patch by Zhongyue Luo
-
-- Fix refcounting issue with extension types in tkinter.
-
-- Issue #8112: xlmrpc.server's DocXMLRPCServer server no longer raises an error
- if methods have annotations; it now correctly displays the annotations.
-
-- Issue #18600: Added policy argument to email.message.Message.as_string,
- and as_bytes and __bytes__ methods to Message.
-
-- Issue #18671: Output more information when logging exceptions occur.
-
-- Issue #18621: Prevent the site module's patched builtins from keeping
- too many references alive for too long.
-
-- Issue #4885: Add weakref support to mmap objects. Patch by Valerie Lambert.
-
-- Issue #8860: Fixed rounding in timedelta constructor.
-
-- Issue #18849: Fixed a Windows-specific tempfile bug where collision with an
- existing directory caused mkstemp and related APIs to fail instead of
- retrying. Report and fix by Vlad Shcherbina.
-
-- Issue #18920: argparse's default destination for the version action (-v,
- --version) has also been changed to stdout, to match the Python executable.
-
-Tests
------
-
-- Issue #18623: Factor out the _SuppressCoreFiles context manager into
- test.support. Patch by Valerie Lambert.
-
-- Issue #12037: Fix test_email for desktop Windows.
-
-- Issue #15507: test_subprocess's test_send_signal could fail if the test
- runner were run in an environment where the process inherited an ignore
- setting for SIGINT. Restore the SIGINT handler to the desired
- KeyboardInterrupt raising one during that test.
-
-- Issue #16799: Switched from getopt to argparse style in regrtest's argument
- parsing. Added more tests for regrtest's argument parsing.
-
-- Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as
- possible, since "localhost" goes through a DNS lookup under recent Windows
- versions.
-
-IDLE
-----
-
-- Issue #18489: Add tests for SearchEngine. Original patch by Phil Webster.
-
-Documentation
--------------
-
-- Issue #18743: Fix references to non-existant "StringIO" module.
-
-- Issue #18783: Removed existing mentions of Python long type in docstrings,
- error messages and comments.
-
-Build
------
-
-- Issue #1584: Provide configure options to override default search paths for
- Tcl and Tk when building _tkinter.
-
-- Issue #15663: Tcl/Tk 8.5.14 is now included with the OS X 10.6+ 64-/32-bit
- installer. It is no longer necessary to install a third-party version of
- Tcl/Tk 8.5 to work around the problems in the Apple-supplied Tcl/Tk 8.5
- shipped in OS X 10.6 and later releases.
-
-Tools/Demos
------------
-
-- Issue #18922: Now The Lib/smtpd.py and Tools/i18n/msgfmt.py scripts write
- their version strings to stdout, and not to sderr.
-
-
-What's New in Python 3.4.0 Alpha 1?
-===================================
-
-Release date: 2013-08-03
-
-Core and Builtins
------------------
-
-- Issue #16741: Fix an error reporting in int().
-
-- Issue #17899: Fix rare file descriptor leak in os.listdir().
-
-- Issue #10241: Clear extension module dict copies at interpreter shutdown.
- Patch by Neil Schemenauer, minimally modified.
-
-- Issue #9035: ismount now recognises volumes mounted below a drive root
- on Windows. Original patch by Atsuo Ishimoto.
-
-- Issue #18214: Improve finalization of Python modules to avoid setting
- their globals to None, in most cases.
-
-- Issue #18112: PEP 442 implementation (safe object finalization).
-
-- Issue #18552: Check return value of PyArena_AddPyObject() in
- obj2ast_object().
-
-- Issue #18560: Fix potential NULL pointer dereference in sum().
-
-- Issue #18520: Add a new PyStructSequence_InitType2() function, same than
- PyStructSequence_InitType() except that it has a return value (0 on success,
- -1 on error).
-
-- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0],
- prefix and exec_prefix if the operation system does not obey MAXPATHLEN.
-
-- Issue #18408: Fix many various bugs in code handling errors, especially
- on memory allocation failure (MemoryError).
-
-- Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all().
-
-- Issue #18342: Use the repr of a module name when an import fails when using
- ``from ... import ...``.
-
-- Issue #17872: Fix a segfault in marshal.load() when input stream returns
- more bytes than requested.
-
-- Issue #18338: `python --version` now prints version string to stdout, and
- not to stderr. Patch by Berker Peksag and Michael Dickens.
-
-- Issue #18426: Fix NULL pointer dereference in C extension import when
- PyModule_GetDef() returns an error.
-
-- Issue #17206: On Windows, increase the stack size from 2 MB to 4.2 MB to fix
- a stack overflow in the marshal module (fix a crash in test_marshal).
- Patch written by Jeremy Kloth.
-
-- Issue #3329: Implement the PEP 445: Add new APIs to customize Python memory
- allocators.
-
-- Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the
- tstate is first removed from TLS and then deallocated.
-
-- Issue #13483: Use VirtualAlloc in obmalloc on Windows.
-
-- Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise
- OverflowError when an argument of %c format is out of range.
-
-- Issue #18111: The min() and max() functions now support a default argument
- to be returned instead of raising a ValueError on an empty sequence.
- (Contributed by Julian Berman.)
-
-- Issue #18137: Detect integer overflow on precision in float.__format__()
- and complex.__format__().
-
-- Issue #18183: Fix various unicode operations on strings with large unicode
- codepoints.
-
-- Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows().
-
-- Issue #18038: SyntaxError raised during compilation sources with illegal
- encoding now always contains an encoding name.
-
-- Issue #17931: Resolve confusion on Windows between pids and process
- handles.
-
-- Tweak the exception message when the magic number or size value in a bytecode
- file is truncated.
-
-- Issue #17932: Fix an integer overflow issue on Windows 64-bit in iterators:
- change the C type of seqiterobject.it_index from long to Py_ssize_t.
-
-- Issue #18065: Don't set __path__ to the package name for frozen packages.
-
-- Issue #18088: When reloading a module, unconditionally reset all relevant
- attributes on the module (e.g. __name__, __loader__, __package__, __file__,
- __cached__).
-
-- Issue #17937: Try harder to collect cyclic garbage at shutdown.
-
-- Issue #12370: Prevent class bodies from interfering with the __class__
- closure.
-
-- Issue #17644: Fix a crash in str.format when curly braces are used in square
- brackets.
-
-- Issue #17237: Fix crash in the ASCII decoder on m68k.
-
-- Issue #17927: Frame objects kept arguments alive if they had been
- copied into a cell, even if the cell was cleared.
-
-- Issue #1545463: At shutdown, defer finalization of codec modules so
- that stderr remains usable.
-
-- Issue #7330: Implement width and precision (ex: "%5.3s") for the format
- string of PyUnicode_FromFormat() function, original patch written by Ysj Ray.
-
-- Issue #1545463: Global variables caught in reference cycles are now
- garbage-collected at shutdown.
-
-- Issue #17094: Clear stale thread states after fork(). Note that this
- is a potentially disruptive change since it may release some system
- resources which would otherwise remain perpetually alive (e.g. database
- connections kept in thread-local storage).
-
-- Issue #17408: Avoid using an obsolete instance of the copyreg module when
- the interpreter is shutdown and then started again.
-
-- Issue #5845: Enable tab-completion in the interactive interpreter by
- default, thanks to a new sys.__interactivehook__.
-
-- Issue #17115,17116: Module initialization now includes setting __package__ and
- __loader__ attributes to None.
-
-- Issue #17853: Ensure locals of a class that shadow free variables always win
- over the closures.
-
-- Issue #17863: In the interactive console, don't loop forever if the encoding
- can't be fetched from stdin.
-
-- Issue #17867: Raise an ImportError if __import__ is not found in __builtins__.
-
-- Issue #18698: Ensure importlib.reload() returns the module out of sys.modules.
-
-- Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3,
- such as was shipped with Centos 5 and Mac OS X 10.4.
-
-- Issue #17413: sys.settrace callbacks were being passed a string instead of an
- exception instance for the 'value' element of the arg tuple if the exception
- originated from C code; now an exception instance is always provided.
-
-- Issue #17782: Fix undefined behaviour on platforms where
- ``struct timespec``'s "tv_nsec" member is not a C long.
-
-- Issue #17722: When looking up __round__, resolve descriptors.
-
-- Issue #16061: Speed up str.replace() for replacing 1-character strings.
-
-- Issue #17715: Fix segmentation fault from raising an exception in a __trunc__
- method.
-
-- Issue #17643: Add __callback__ attribute to weakref.ref.
-
-- Issue #16447: Fixed potential segmentation fault when setting __name__ on a
- class.
-
-- Issue #17669: Fix crash involving finalization of generators using yield from.
-
-- Issue #14439: Python now prints the traceback on runpy failure at startup.
-
-- Issue #17469: Fix _Py_GetAllocatedBlocks() and sys.getallocatedblocks()
- when running on valgrind.
-
-- Issue #17619: Make input() check for Ctrl-C correctly on Windows.
-
-- Issue #17357: Add missing verbosity messages for -v/-vv that were lost during
- the importlib transition.
-
-- Issue #17610: Don't rely on non-standard behavior of the C qsort() function.
-
-- Issue #17323: The "[X refs, Y blocks]" printed by debug builds has been
- disabled by default. It can be re-enabled with the `-X showrefcount` option.
-
-- Issue #17328: Fix possible refleak in dict.setdefault.
-
-- Issue #17275: Corrected class name in init error messages of the C version of
- BufferedWriter and BufferedRandom.
-
-- Issue #7963: Fixed misleading error message that issued when object is
- called without arguments.
-
-- Issue #8745: Small speed up zipimport on Windows. Patch by Catalin Iacob.
-
-- Issue #5308: Raise ValueError when marshalling too large object (a sequence
- with size >= 2**31), instead of producing illegal marshal data.
-
-- Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError
- and a full traceback including line number.
-
-- Issue #16967: In function definition, evaluate positional defaults before
- keyword-only defaults.
-
-- Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.)
- in the interpreter.
-
-- Issue #17137: When an Unicode string is resized, the internal wide character
- string (wstr) format is now cleared.
-
-- Issue #17043: The unicode-internal decoder no longer read past the end of
- input buffer.
-
-- Issue #17098: All modules now have __loader__ set even if they pre-exist the
- bootstrapping of importlib.
-
-- Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder.
-
-- Issue #16772: The base argument to the int constructor no longer accepts
- floats, or other non-integer objects with an __int__ method. Objects
- with an __index__ method are now accepted.
-
-- Issue #10156: In the interpreter's initialization phase, unicode globals
- are now initialized dynamically as needed.
-
-- Issue #16980: Fix processing of escaped non-ascii bytes in the
- unicode-escape-decode decoder.
-
-- Issue #16975: Fix error handling bug in the escape-decode bytes decoder.
-
-- Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping"
- in any mapping, not only in a string.
-
-- Issue #16613: Add *m* argument to ``collections.Chainmap.new_child`` to
- allow the new child map to be specified explicitly.
-
-- Issue #16730: importlib.machinery.FileFinder now no longers raises an
- exception when trying to populate its cache and it finds out the directory is
- unreadable or has turned into a file. Reported and diagnosed by
- David Pritchard.
-
-- Issue #16906: Fix a logic error that prevented most static strings from being
- cleared.
-
-- Issue #11461: Fix the incremental UTF-16 decoder. Original patch by
- Amaury Forgeot d'Arc.
-
-- Issue #16856: Fix a segmentation fault from calling repr() on a dict with
- a key whose repr raise an exception.
-
-- Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB.
-
-- Issue #16761: Calling int() with base argument only now raises TypeError.
-
-- Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py
- when retrieving a REG_DWORD value. This corrects functions like
- winreg.QueryValueEx that may have been returning truncated values.
-
-- Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg
- when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.
-
-- Issue #11939: Set the st_dev attribute of stat_result to allow Windows to
- take advantage of the os.path.samefile/sameopenfile/samestat implementations
- used by other platforms.
-
-- Issue #16772: The int() constructor's second argument (base) no longer
- accepts non integer values. Consistent with the behavior in Python 2.
-
-- Issue #14470: Remove w9xpopen support per PEP 11.
-
-- Issue #9856: Replace deprecation warning with raising TypeError
- in object.__format__. Patch by Florent Xicluna.
-
-- Issue #16597: In buffered and text IO, call close() on the underlying stream
- if invoking flush() fails.
-
-- Issue #16722: In the bytes() constructor, try to call __bytes__ on the
- argument before __index__.
-
-- Issue #16421: loading multiple modules from one shared object is now
- handled correctly (previously, the first module loaded from that file
- was silently returned). Patch by Václav Šmilauer.
-
-- Issue #16602: When a weakref's target was part of a long deallocation
- chain, the object could remain reachable through its weakref even though
- its refcount had dropped to zero.
-
-- Issue #16495: Remove extraneous NULL encoding check from bytes_decode().
-
-- Issue #16619: Create NameConstant AST class to represent None, True, and False
- literals. As a result, these constants are never loaded at runtime from
- builtins.
-
-- Issue #16455: On FreeBSD and Solaris, if the locale is C, the
- ASCII/surrogateescape codec is now used (instead of the locale encoding) to
- decode the command line arguments. This change fixes inconsistencies with
- os.fsencode() and os.fsdecode(), because these operating systems announce an
- ASCII locale encoding, but actually use the ISO-8859-1 encoding in practice.
-
-- Issue #16562: Optimize dict equality testing. Patch by Serhiy Storchaka.
-
-- Issue #16588: Silence unused-but-set warnings in Python/thread_pthread
-
-- Issue #16592: stringlib_bytes_join doesn't raise MemoryError on allocation
- failure.
-
-- Issue #16546: Fix: ast.YieldFrom argument is now mandatory.
-
-- Issue #16514: Fix regression causing a traceback when sys.path[0] is None
- (actually, any non-string or non-bytes type).
-
-- Issue #16306: Fix multiple error messages when unknown command line
- parameters where passed to the interpreter. Patch by Hieu Nguyen.
-
-- Issue #16215: Fix potential double memory free in str.replace(). Patch
- by Serhiy Storchaka.
-
-- Issue #16290: A float return value from the __complex__ special method is no
- longer accepted in the complex() constructor.
-
-- Issue #16416: On Mac OS X, operating system data are now always
- encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding
- (which may be ASCII if no locale environment variable is set), to avoid
- inconsistencies with os.fsencode() and os.fsdecode() functions which are
- already using UTF-8/surrogateescape.
-
-- Issue #16453: Fix equality testing of dead weakref objects.
-
-- Issue #9535: Fix pending signals that have been received but not yet
- handled by Python to not persist after os.fork() in the child process.
-
-- Issue #14794: Fix slice.indices to return correct results for huge values,
- rather than raising OverflowError.
-
-- Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor
- Stinner.
-
-- Issue #8271: the utf-8 decoder now outputs the correct number of U+FFFD
- characters when used with the 'replace' error handler on invalid utf-8
- sequences. Patch by Serhiy Storchaka, tests by Ezio Melotti.
-
-- Issue #5765: Apply a hard recursion limit in the compiler instead of
- blowing the stack and segfaulting. Initial patch by Andrea Griffini.
-
-- Issue #16402: When slicing a range, fix shadowing of exceptions from
- __index__.
-
-- Issue #16336: fix input checking in the surrogatepass error handler.
- Patch by Serhiy Storchaka.
-
-- Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now
- raises an error.
-
-- Issue #7317: Display full tracebacks when an error occurs asynchronously.
- Patch by Alon Horev with update by Alexey Kachayev.
-
-- Issue #16309: Make PYTHONPATH="" behavior the same as if PYTHONPATH
- not set at all.
-
-- Issue #10189: Improve the error reporting of SyntaxErrors related to global
- and nonlocal statements.
-
-- Fix segfaults on setting __qualname__ on builtin types and attempting to
- delete it on any type.
-
-- Issue #14625: Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch
- written by Serhiy Storchaka.
-
-- Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass
- received a nonempty dict from the constructor.
-
-- Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a
- class's __dict__ and on type.
-
-- Issue #12805: Make bytes.join and bytearray.join faster when the separator
- is empty. Patch by Serhiy Storchaka.
-
-- Issue #6074: Ensure cached bytecode files can always be updated by the
- user that created them, even when the source file is read-only.
-
-- Issue #15958: bytes.join and bytearray.join now accept arbitrary buffer
- objects.
-
-- Issue #14783: Improve int() docstring and switch docstrings for str(),
- range(), and slice() to use multi-line signatures.
-
-- Issue #16160: Subclass support now works for types.SimpleNamespace.
-
-- Issue #16148: Implement PEP 424, adding operator.length_hint and
- PyObject_LengthHint.
-
-- Upgrade Unicode data (UCD) to version 6.2.
-
-- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
- decoder (already working as unicode strings). Patch by Serhiy Storchaka.
-
-- Issue #15144: Fix possible integer overflow when handling pointers as integer
- values, by using `Py_uintptr_t` instead of `size_t`. Patch by Serhiy
- Storchaka.
-
-- Issue #15965: Explicitly cast `AT_FDCWD` as (int). Required on Solaris 10
- (which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms.
-
-- Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors.
-
-- Issue #15448: Buffered IO now frees the buffer when closed, instead
- of when deallocating.
-
-- Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
- exception handler on code with syntax errors.
-
-- Issue #15897: zipimport.c doesn't check return value of fseek().
- Patch by Felipe Cruz.
-
-- Issue #15801: Make sure mappings passed to '%' formatting are actually
- subscriptable.
-
-- Issue #15111: __import__ should propagate ImportError when raised as a
- side-effect of a module triggered from using fromlist.
-
-- Issue #15022: Add pickle and comparison support to types.SimpleNamespace.
-
-Library
--------
-
-- Issue #4331: Added functools.partialmethod (Initial patch by Alon Horev)
-
-- Issue #13461: Fix a crash in the TextIOWrapper.tell method on 64-bit
- platforms. Patch by Yogesh Chaudhari.
-
-- Issue #18681: Fix a NameError in importlib.reload() (noticed by Weizhao Li).
-
-- Issue #14323: Expanded the number of digits in the coefficients for the
- RGB -- YIQ conversions so that they match the FCC NTSC versions.
-
-- Issue #17998: Fix an internal error in regular expression engine.
-
-- Issue #17557: Fix os.getgroups() to work with the modified behavior of
- getgroups(2) on OS X 10.8. Original patch by Mateusz Lenik.
-
-- Issue #18608: Avoid keeping a strong reference to the locale module
- inside the _io module.
-
-- Issue #18619: Fix atexit leaking callbacks registered from sub-interpreters,
- and make it GC-aware.
-
-- Issue #15699: The readline module now uses PEP 3121-style module
- initialization, so as to reclaim allocated resources (Python callbacks)
- at shutdown. Original patch by Robin Schreiber.
-
-- Issue #17616: wave.open now supports the context management protocol.
-
-- Issue #18599: Fix name attribute of _sha1.sha1() object. It now returns
- 'SHA1' instead of 'SHA'.
-
-- Issue #13266: Added inspect.unwrap to easily unravel __wrapped__ chains
- (initial patch by Daniel Urban and Aaron Iles)
-
-- Issue #18561: Skip name in ctypes' _build_callargs() if name is NULL.
-
-- Issue #18559: Fix NULL pointer dereference error in _pickle module
-
-- Issue #18556: Check the return type of PyUnicode_AsWideChar() in ctype's
- U_set().
-
-- Issue #17818: aifc.getparams now returns a namedtuple.
-
-- Issue #18549: Eliminate dead code in socket_ntohl()
-
-- Issue #18530: Remove additional stat call from posixpath.ismount.
- Patch by Alex Gaynor.
-
-- Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj()
-
-- Issue #9177: Calling read() or write() now raises ValueError, not
- AttributeError, on a closed SSL socket. Patch by Senko Rasic.
-
-- Issue #18513: Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 +
- gcc.
-
-- Issue #18479: Changed venv Activate.ps1 to make deactivate a function, and
- removed Deactivate.ps1.
-
-- Issue #18480: Add missing call to PyType_Ready to the _elementtree extension.
-
-- Issue #17778: Fix test discovery for test_multiprocessing. (Patch by
- Zachary Ware.)
-
-- Issue #18393: The private module _gestalt and private functions
- platform._mac_ver_gestalt, platform._mac_ver_lookup and
- platform._bcd2str have been removed. This does not affect the public
- interface of the platform module.
-
-- Issue #17482: functools.update_wrapper (and functools.wraps) now set the
- __wrapped__ attribute correctly even if the underlying function has a
- __wrapped__ attribute set.
-
-- Issue #18431: The new email header parser now decodes RFC2047 encoded words
- in structured headers.
-
-- Issue #18432: The sched module's queue method was incorrectly returning
- an iterator instead of a list.
-
-- Issue #18044: The new email header parser was mis-parsing encoded words where
- an encoded character immediately followed the '?' that follows the CTE
- character, resulting in a decoding failure. They are now decoded correctly.
-
-- Issue #18101: Tcl.split() now process strings nested in a tuple as it
- do with byte strings.
-
-- Issue #18116: getpass was always getting an error when testing /dev/tty,
- and thus was always falling back to stdin, and would then raise an exception
- if stdin could not be used (such as /dev/null). It also leaked an open file.
- All of these issues are now fixed.
-
-- Issue #17198: Fix a NameError in the dbm module. Patch by Valentina
- Mukhamedzhanova.
-
-- Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form.
-
-- Issue #18020: improve html.escape speed by an order of magnitude.
- Patch by Matt Bryant.
-
-- Issue #18347: ElementTree's html serializer now preserves the case of
- closing tags.
-
-- Issue #17261: Ensure multiprocessing's proxies use proper address.
-
-- Issue #18343: faulthandler.register() now keeps the previous signal handler
- when the function is called twice, so faulthandler.unregister() restores
- correctly the original signal handler.
-
-- Issue #17097: Make multiprocessing ignore EINTR.
-
-- Issue #18339: Negative ints keys in unpickler.memo dict no longer cause a
- segfault inside the _pickle C extension.
-
-- Issue #18240: The HMAC module is no longer restricted to bytes and accepts
- any bytes-like object, e.g. memoryview. Original patch by Jonas Borgström.
-
-- Issue #18224: Removed pydoc script from created venv, as it causes problems
- on Windows and adds no value over and above python -m pydoc ...
-
-- Issue #18155: The csv module now correctly handles csv files that use
- a delimter character that has a special meaning in regexes, instead of
- throwing an exception.
-
-- Issue #14360: encode_quopri can now be successfully used as an encoder
- when constructing a MIMEApplication object.
-
-- Issue #11390: Add -o and -f command line options to the doctest CLI to
- specify doctest options (and convert it to using argparse).
-
-- Issue #18135: ssl.SSLSocket.write() now raises an OverflowError if the input
- string in longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain()
- raises a ValueError if the password is longer than 2 gigabytes. The ssl
- module does not support partial write.
-
-- Issue #11016: Add C implementation of the stat module as _stat.
-
-- Issue #18248: Fix libffi build on AIX.
-
-- Issue #18259: Declare sethostname in socketmodule.c for AIX
-
-- Issue #18147: Add diagnostic functions to ssl.SSLContext(). get_ca_list()
- lists all loaded CA certificates and cert_store_stats() returns amount of
- loaded X.509 certs, X.509 CA certs and CRLs.
-
-- Issue #18167: cgi.FieldStorage no longer fails to handle multipart/form-data
- when \r\n appears at end of 65535 bytes without other newlines.
-
-- Issue #18076: Introduce importlib.util.decode_source().
-
-- Issue #18357: add tests for dictview set difference.
- Patch by Fraser Tweedale.
-
-- importlib.abc.SourceLoader.get_source() no longer changes SyntaxError or
- UnicodeDecodeError into ImportError.
-
-- Issue #18058, 18057: Make the namespace package loader meet the
- importlib.abc.InspectLoader ABC, allowing for namespace packages to work with
- runpy.
-
-- Issue #17177: The imp module is pending deprecation.
-
-- subprocess: Prevent a possible double close of parent pipe fds when the
- subprocess exec runs into an error. Prevent a regular multi-close of the
- /dev/null fd when any of stdin, stdout and stderr was set to DEVNULL.
-
-- Issue #18194: Introduce importlib.util.cache_from_source() and
- source_from_cache() while documenting the equivalent functions in imp as
- deprecated.
-
-- Issue #17907: Document imp.new_module() as deprecated in favour of
- types.ModuleType.
-
-- Issue #18192: Introduce importlib.util.MAGIC_NUMBER and document as deprecated
- imp.get_magic().
-
-- Issue #18149: Add filecmp.clear_cache() to manually clear the filecmp cache.
- Patch by Mark Levitt
-
-- Issue #18193: Add importlib.reload().
-
-- Issue #18157: Stop using imp.load_module() in pydoc.
-
-- Issue #16102: Make uuid._netbios_getnode() work again on Python 3.
-
-- Issue #17134: Add ssl.enum_cert_store() as interface to Windows' cert store.
-
-- Issue #18143: Implement ssl.get_default_verify_paths() in order to debug
- the default locations for cafile and capath.
-
-- Issue #17314: Move multiprocessing.forking over to importlib.
-
-- Issue #11959: SMTPServer and SMTPChannel now take an optional map, use of
- which avoids affecting global state.
-
-- Issue #18109: os.uname() now decodes fields from the locale encoding, and
- socket.gethostname() now decodes the hostname from the locale encoding,
- instead of using the UTF-8 encoding in strict mode.
-
-- Issue #18089: Implement importlib.abc.InspectLoader.load_module.
-
-- Issue #18088: Introduce importlib.abc.Loader.init_module_attrs for setting
- module attributes. Leads to the pending deprecation of
- importlib.util.module_for_loader.
-
-- Issue #17403: urllib.parse.robotparser normalizes the urls before adding to
- ruleline. This helps in handling certain types invalid urls in a conservative
- manner. Patch contributed by Mher Movsisyan.
-
-- Issue #18070: Have importlib.util.module_for_loader() set attributes
- unconditionally in order to properly support reloading.
-
-- Added importlib.util.module_to_load to return a context manager to provide the
- proper module object to load.
-
-- Issue #18025: Fixed a segfault in io.BufferedIOBase.readinto() when raw
- stream's read() returns more bytes than requested.
-
-- Issue #18011: As was originally intended, base64.b32decode() now raises a
- binascii.Error if there are non-b32-alphabet characters present in the input
- string, instead of a TypeError.
-
-- Issue #18072: Implement importlib.abc.InspectLoader.get_code() and
- importlib.abc.ExecutionLoader.get_code().
-
-- Issue #8240: Set the SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER flag on SSL
- sockets.
-
-- Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X
- with port None or "0" and flags AI_NUMERICSERV.
-
-- Issue #16986: ElementTree now correctly works with string input when the
- internal XML encoding is not UTF-8 or US-ASCII.
-
-- Issue #17996: socket module now exposes AF_LINK constant on BSD and OSX.
-
-- Issue #17900: Allowed pickling of recursive OrderedDicts. Decreased pickled
- size and pickling time.
-
-- Issue #17914: Add os.cpu_count(). Patch by Yogesh Chaudhari, based on an
- initial patch by Trent Nelson.
-
-- Issue #17812: Fixed quadratic complexity of base64.b32encode().
- Optimize base64.b32encode() and base64.b32decode() (speed up to 3x).
-
-- Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of
- service using certificates with many wildcards (CVE-2013-2099).
-
-- Issue #15758: Fix FileIO.readall() so it no longer has O(n**2) complexity.
-
-- Issue #14596: The struct.Struct() objects now use a more compact
- implementation.
-
-- Issue #17981: logging's SysLogHandler now closes the socket when it catches
- socket OSErrors.
-
-- Issue #17964: Fix os.sysconf(): the return type of the C sysconf() function
- is long, not int.
-
-- Fix typos in the multiprocessing module.
-
-- Issue #17754: Make ctypes.util.find_library() independent of the locale.
-
-- Issue #17968: Fix memory leak in os.listxattr().
-
-- Issue #17606: Fixed support of encoded byte strings in the XMLGenerator
- characters() and ignorableWhitespace() methods. Original patch by Sebastian
- Ortiz Vasquez.
-
-- Issue #17732: Ignore distutils.cfg options pertaining to install paths if a
- virtual environment is active.
-
-- Issue #17915: Fix interoperability of xml.sax with file objects returned by
- codecs.open().
-
-- Issue #16601: Restarting iteration over tarfile really restarts rather
- than continuing from where it left off. Patch by Michael Birtwell.
-
-- Issue #17289: The readline module now plays nicer with external modules
- or applications changing the rl_completer_word_break_characters global
- variable. Initial patch by Bradley Froehle.
-
-- Issue #12181: select module: Fix struct kevent definition on OpenBSD 64-bit
- platforms. Patch by Federico Schwindt.
-
-- Issue #11816: multiple improvements to the dis module: get_instructions
- generator, ability to redirect output to a file, Bytecode and Instruction
- abstractions. Patch by Nick Coghlan, Ryan Kelly and Thomas Kluyver.
-
-- Issue #13831: Embed stringification of remote traceback in local
- traceback raised when pool task raises an exception.
-
-- Issue #15528: Add weakref.finalize to support finalization using
- weakref callbacks.
-
-- Issue #14173: Avoid crashing when reading a signal handler during
- interpreter shutdown.
-
-- Issue #15902: Fix imp.load_module() accepting None as a file when loading an
- extension module.
-
-- Issue #13721: SSLSocket.getpeercert() and SSLSocket.do_handshake() now
- raise an OSError with ENOTCONN, instead of an AttributeError, when the
- SSLSocket is not connected.
-
-- Issue #14679: add an __all__ (that contains only HTMLParser) to html.parser.
-
-- Issue #17802: Fix an UnboundLocalError in html.parser. Initial tests by
- Thomas Barlow.
-
-- Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by
- extention load_module()) now have a better chance of working when reloaded.
-
-- Issue #17804: New function ``struct.iter_unpack`` allows for streaming
- struct unpacking.
-
-- Issue #17830: When keyword.py is used to update a keyword file, it now
- preserves the line endings of the original file.
-
-- Issue #17272: Making the urllib.request's Request.full_url a descriptor.
- Fixes bugs with assignment to full_url. Patch by Demian Brecht.
-
-- Issue #17353: Plistlib emitted empty data tags with deeply nested datastructures
-
-- Issue #11714: Use 'with' statements to assure a Semaphore releases a
- condition variable. Original patch by Thomas Rachel.
-
-- Issue #16624: `subprocess.check_output` now accepts an `input` argument,
- allowing the subprocess's stdin to be provided as a (byte) string.
- Patch by Zack Weinberg.
-
-- Issue #17795: Reverted backwards-incompatible change in SysLogHandler with
- Unix domain sockets.
-
-- Issue #16694: Add a pure Python implementation of the operator module.
- Patch by Zachary Ware.
-
-- Issue #11182: remove the unused and undocumented pydoc.Scanner class.
- Patch by Martin Morrison.
-
-- Issue #17741: Add ElementTree.XMLPullParser, an event-driven parser for
- non-blocking applications.
-
-- Issue #17555: Fix ForkAwareThreadLock so that size of after fork
- registry does not grow exponentially with generation of process.
-
-- Issue #17707: fix regression in multiprocessing.Queue's get() method where
- it did not block for short timeouts.
-
-- Issue #17720: Fix the Python implementation of pickle.Unpickler to correctly
- process the APPENDS opcode when it is used on non-list objects.
-
-- Issue #17012: shutil.which() no longer falls back to the PATH environment
- variable if an empty path argument is specified. Patch by Serhiy Storchaka.
-
-- Issue #17710: Fix pickle raising a SystemError on bogus input.
-
-- Issue #17341: Include the invalid name in the error messages from re about
- invalid group names.
-
-- Issue #17702: os.environ now raises KeyError with the original environment
- variable name (str on UNIX), instead of using the encoded name (bytes on
- UNIX).
-
-- Issue #16163: Make the importlib based version of pkgutil.iter_importers
- work for submodules. Initial patch by Berker Peksag.
-
-- Issue #16804: Fix a bug in the 'site' module that caused running
- 'python -S -m site' to incorrectly throw an exception.
-
-- Issue #15480: Remove the deprecated and unused TYPE_INT64 code from marshal.
- Initial patch by Daniel Riti.
-
-- Issue #2118: SMTPException is now a subclass of OSError.
-
-- Issue #17016: Get rid of possible pointer wraparounds and integer overflows
- in the re module. Patch by Nickolai Zeldovich.
-
-- Issue #16658: add missing return to HTTPConnection.send()
- Patch by Jeff Knupp.
-
-- Issue #9556: the logging package now allows specifying a time-of-day for a
- TimedRotatingFileHandler to rotate.
-
-- Issue #14971: unittest test discovery no longer gets confused when a function
- has a different __name__ than its name in the TestCase class dictionary.
-
-- Issue #17487: The wave getparams method now returns a namedtuple rather than
- a plain tuple.
-
-- Issue #17675: socket repr() provides local and remote addresses (if any).
- Patch by Giampaolo Rodola'
-
-- Issue #17093: Make the ABCs in importlib.abc provide default values or raise
- reasonable exceptions for their methods to make them more amenable to super()
- calls.
-
-- Issue #17566: Make importlib.abc.Loader.module_repr() optional instead of an
- abstractmethod; now it raises NotImplementedError so as to be ignored by default.
-
-- Issue #17678: Remove the use of deprecated method in http/cookiejar.py by
- changing the call to get_origin_req_host() to origin_req_host.
-
-- Issue #17666: Fix reading gzip files with an extra field.
-
-- Issue #16475: Support object instancing, recursion and interned strings
- in marshal
-
-- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
-
-- Issue #16795: On the ast.arguments object, unify vararg with varargannotation
- and kwarg and kwargannotation. Change the column offset of ast.Attribute to be
- at the attribute name.
-
-- Issue #17434: Properly raise a SyntaxError when a string occurs between future
- imports.
-
-- Issue #17117: Import and @importlib.util.set_loader now set __loader__ when
- it has a value of None or the attribute doesn't exist.
-
-- Issue #17032: The "global" in the "NameError: global name 'x' is not defined"
- error message has been removed. Patch by Ram Rachum.
-
-- Issue #18080: When building a C extension module on OS X, if the compiler
- is overriden with the CC environment variable, use the new compiler as
- the default for linking if LDSHARED is not also overriden. This restores
- Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0.
-
-- Issue #18113: Fixed a refcount leak in the curses.panel module's
- set_userptr() method. Reported by Atsuo Ishimoto.
-
-- Implement PEP 443 "Single-dispatch generic functions".
-
-- Implement PEP 435 "Adding an Enum type to the Python standard library".
-
-- Issue #15596: Faster pickling of unicode strings.
-
-- Issue #17572: Avoid chained exceptions when passing bad directives to
- time.strptime(). Initial patch by Claudiu Popa.
-
-- Issue #17435: threading.Timer's __init__ method no longer uses mutable
- default values for the args and kwargs parameters.
-
-- Issue #17526: fix an IndexError raised while passing code without filename to
- inspect.findsource(). Initial patch by Tyler Doyle.
-
-- Issue #17540: Added style parameter to logging formatter configuration by dict.
-
-- Issue #16692: The ssl module now supports TLS 1.1 and TLS 1.2. Initial
- patch by Michele Orrù.
-
-- Issue #17025: multiprocessing: Reduce Queue and SimpleQueue contention.
-
-- Issue #17536: Add to webbrowser's browser list: www-browser, x-www-browser,
- iceweasel, iceape.
-
-- Issue #17150: pprint now uses line continuations to wrap long string
- literals.
-
-- Issue #17488: Change the subprocess.Popen bufsize parameter default value
- from unbuffered (0) to buffering (-1) to match the behavior existing code
- expects and match the behavior of the subprocess module in Python 2 to avoid
- introducing hard to track down bugs.
-
-- Issue #17521: Corrected non-enabling of logger following two calls to
- fileConfig().
-
-- Issue #17508: Corrected logging MemoryHandler configuration in dictConfig()
- where the target handler wasn't configured first.
-
-- Issue #17209: curses.window.get_wch() now correctly handles KeyboardInterrupt
- (CTRL+c).
-
-- Issue #5713: smtplib now handles 421 (closing connection) error codes when
- sending mail by closing the socket and reporting the 421 error code via the
- exception appropriate to the command that received the error response.
-
-- Issue #16997: unittest.TestCase now provides a subTest() context manager
- to procedurally generate, in an easy way, small test instances.
-
-- Issue #17485: Also delete the Request Content-Length header if the data
- attribute is deleted. (Follow on to issue Issue #16464).
-
-- Issue #15927: CVS now correctly parses escaped newlines and carriage
- when parsing with quoting turned off.
-
-- Issue #17467: add readline and readlines support to mock_open in
- unittest.mock.
-
-- Issue #13248: removed deprecated and undocumented difflib.isbjunk,
- isbpopular.
-
-- Issue #17192: Update the ctypes module's libffi to v3.0.13. This
- specifically addresses a stack misalignment issue on x86 and issues on
- some more recent platforms.
-
-- Issue #8862: Fixed curses cleanup when getkey is interrputed by a signal.
-
-- Issue #17443: imaplib.IMAP4_stream was using the default unbuffered IO
- in subprocess, but the imap code assumes buffered IO. In Python2 this
- worked by accident. IMAP4_stream now explicitly uses buffered IO.
-
-- Issue #17476: Fixed regression relative to Python2 in undocumented pydoc
- 'allmethods'; it was missing unbound methods on the class.
-
-- Issue #17474: Remove the deprecated methods of Request class.
-
-- Issue #16709: unittest discover order is no-longer filesystem specific. Patch
- by Jeff Ramnani.
-
-- Use the HTTPS PyPI url for upload, overriding any plain HTTP URL in pypirc.
-
-- Issue #5024: sndhdr.whichhdr now returns the frame count for WAV files
- rather than -1.
-
-- Issue #17460: Remove the strict argument of HTTPConnection and removing the
- DeprecationWarning being issued from 3.2 onwards.
-
-- Issue #16880: Do not assume _imp.load_dynamic() is defined in the imp module.
-
-- Issue #16389: Fixed a performance regression relative to Python 3.1 in the
- caching of compiled regular expressions.
-
-- Added missing FeedParser and BytesFeedParser to email.parser.__all__.
-
-- Issue #17431: Fix missing import of BytesFeedParser in email.parser.
-
-- Issue #12921: http.server's send_error takes an explain argument to send more
- information in response. Patch contributed by Karl.
-
-- Issue #17414: Add timeit, repeat, and default_timer to timeit.__all__.
-
-- Issue #1285086: Get rid of the refcounting hack and speed up
- urllib.parse.unquote() and urllib.parse.unquote_to_bytes().
-
-- Issue #17099: Have importlib.find_loader() raise ValueError when __loader__
- is not set, harmonizing with what happens when the attribute is set to None.
-
-- Expose the O_PATH constant in the os module if it is available.
-
-- Issue #17368: Fix an off-by-one error in the Python JSON decoder that caused
- a failure while decoding empty object literals when object_pairs_hook was
- specified.
-
-- Issue #17385: Fix quadratic behavior in threading.Condition. The FIFO
- queue now uses a deque instead of a list.
-
-- Issue #15806: Add contextlib.ignore(). This creates a context manager to
- ignore specified exceptions, replacing the "except SomeException: pass" idiom.
-
-- Issue #14645: The email generator classes now produce output using the
- specified linesep throughout. Previously if the prolog, epilog, or
- body were stored with a different linesep, that linesep was used. This
- fix corrects an RFC non-compliance issue with smtplib.send_message.
-
-- Issue #17278: Fix a crash in heapq.heappush() and heapq.heappop() when
- the list is being resized concurrently.
-
-- Issue #16962: Use getdents64 instead of the obsolete getdents syscall
- in the subprocess module on Linux.
-
-- Issue #16935: unittest now counts the module as skipped if it raises SkipTest,
- instead of counting it as an error. Patch by Zachary Ware.
-
-- Issue #17018: Make Process.join() retry if os.waitpid() fails with EINTR.
-
-- Issue #17223: array module: Fix a crasher when converting an array containing
- invalid characters (outside range [U+0000; U+10ffff]) to Unicode:
- repr(array), str(array) and array.tounicode(). Patch written by Manuel Jacob.
-
-- Issue #17197: profile/cProfile modules refactored so that code of run() and
- runctx() utility functions is not duplicated in both modules.
-
-- Issue #14720: sqlite3: Convert datetime microseconds correctly.
- Patch by Lowe Thiderman.
-
-- Issue #15132: Allow a list for the defaultTest argument of
- unittest.TestProgram. Patch by Jyrki Pulliainen.
-
-- Issue #17225: JSON decoder now counts columns in the first line starting
- with 1, as in other lines.
-
-- Issue #6623: Added explicit DeprecationWarning for ftplib.netrc, which has
- been deprecated and undocumented for a long time.
-
-- Issue #13700: Fix byte/string handling in imaplib authentication when an
- authobject is specified.
-
-- Issue #13153: Tkinter functions now raise TclError instead of ValueError when
- a string argument contains non-BMP character.
-
-- Issue #9669: Protect re against infinite loops on zero-width matching in
- non-greedy repeat. Patch by Matthew Barnett.
-
-- Issue #13169: The maximal repetition number in a regular expression has been
- increased from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on
- 64-bit).
-
-- Issue #17143: Fix a missing import in the trace module. Initial patch by
- Berker Peksag.
-
-- Issue #15220: email.feedparser's line splitting algorithm is now simpler and
- faster.
-
-- Issue #16743: Fix mmap overflow check on 32 bit Windows.
-
-- Issue #16996: webbrowser module now uses shutil.which() to find a
- web-browser on the executable search path.
-
-- Issue #16800: tempfile.gettempdir() no longer left temporary files when
- the disk is full. Original patch by Amir Szekely.
-
-- Issue #17192: Import libffi-3.0.12.
-
-- Issue #16564: Fixed regression relative to Python2 in the operation of
- email.encoders.encode_7or8bit when used with binary data.
-
-- Issue #17052: unittest discovery should use self.testLoader.
-
-- Issue #4591: Uid and gid values larger than 2**31 are supported now.
-
-- Issue #17141: random.vonmisesvariate() no longer hangs for large kappas.
-
-- Issue #17149: Fix random.vonmisesvariate to always return results in
- [0, 2*math.pi].
-
-- Issue #1470548: XMLGenerator now works with binary output streams.
-
-- Issue #6975: os.path.realpath() now correctly resolves multiple nested
- symlinks on POSIX platforms.
-
-- Issue #13773: sqlite3.connect() gets a new `uri` parameter to pass the
- filename as a URI, allowing to pass custom options.
-
-- Issue #16564: Fixed regression relative to Python2 in the operation of
- email.encoders.encode_noop when used with binary data.
-
-- Issue #10355: The mode, name, encoding and newlines properties now work on
- SpooledTemporaryFile objects even when they have not yet rolled over.
- Obsolete method xreadline (which has never worked in Python 3) has been
- removed.
-
-- Issue #16686: Fixed a lot of bugs in audioop module. Fixed crashes in
- avgpp(), maxpp() and ratecv(). Fixed an integer overflow in add(), bias(),
- and ratecv(). reverse(), lin2lin() and ratecv() no more lose precision for
- 32-bit samples. max() and rms() no more returns a negative result and
- various other functions now work correctly with 32-bit sample -0x80000000.
-
-- Issue #17073: Fix some integer overflows in sqlite3 module.
-
-- Issue #16723: httplib.HTTPResponse no longer marked closed when the connection
- is automatically closed.
-
-- Issue #15359: Add CAN_BCM protocol support to the socket module. Patch by
- Brian Thorne.
-
-- Issue #16948: Fix quoted printable body encoding for non-latin1 character
- sets in the email package.
-
-- Issue #16811: Fix folding of headers with no value in the provisional email
- policies.
-
-- Issue #17132: Update symbol for "yield from" grammar changes.
-
-- Issue #17076: Make copying of xattrs more tolerant of missing FS support.
- Patch by Thomas Wouters.
-
-- Issue #17089: Expat parser now correctly works with string input when the
- internal XML encoding is not UTF-8 or US-ASCII. It also now accepts bytes
- and strings larger than 2 GiB.
-
-- Issue #6083: Fix multiple segmentation faults occured when PyArg_ParseTuple
- parses nested mutating sequence.
-
-- Issue #5289: Fix ctypes.util.find_library on Solaris.
-
-- Issue #17106: Fix a segmentation fault in io.TextIOWrapper when an underlying
- stream or a decoder produces data of an unexpected type (i.e. when
- io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec).
-
-- Issue #17015: When it has a spec, a Mock object now inspects its signature
- when matching calls, so that arguments can be matched positionally or
- by name.
-
-- Issue #15633: httplib.HTTPResponse is now mark closed when the server
- sends less than the advertised Content-Length.
-
-- Issue #12268: The io module file object write methods no longer abort early
- when one of its write system calls is interrupted (EINTR).
-
-- Issue #6972: The zipfile module no longer overwrites files outside of
- its destination path when extracting malicious zip files.
-
-- Issue #4844: ZipFile now raises BadZipFile when opens a ZIP file with an
- incomplete "End of Central Directory" record. Original patch by Guilherme
- Polo and Alan McIntyre.
-
-- Issue #17071: Signature.bind() now works when one of the keyword arguments
- is named ``self``.
-
-- Issue #12004: Fix an internal error in PyZipFile when writing an invalid
- Python file. Patch by Ben Morgan.
-
-- Have py_compile use importlib as much as possible to avoid code duplication.
- Code now raises FileExistsError if the file path to be used for the
- byte-compiled file is a symlink or non-regular file as a warning that import
- will not keep the file path type if it writes to that path.
-
-- Issue #16972: Have site.addpackage() consider already known paths even when
- none are explicitly passed in. Bug report and fix by Kirill.
-
-- Issue #1602133: on Mac OS X a shared library build (``--enable-shared``)
- now fills the ``os.environ`` variable correctly.
-
-- Issue #15505: `unittest.installHandler` no longer assumes SIGINT handler is
- set to a callable object.
-
-- Issue #13454: Fix a crash when deleting an iterator created by itertools.tee()
- if all other iterators were very advanced before.
-
-- Issue #12411: Fix to cgi.parse_multipart to correctly use bytes boundaries
- and bytes data. Patch by Jonas Wagner.
-
-- Issue #16957: shutil.which() no longer searches a bare file name in the
- current directory on Unix and no longer searches a relative file path with
- a directory part in PATH directories. Patch by Thomas Kluyver.
-
-- Issue #1159051: GzipFile now raises EOFError when reading a corrupted file
- with truncated header or footer.
-
-- Issue #16993: shutil.which() now preserves the case of the path and extension
- on Windows.
-
-- Issue #16992: On Windows in signal.set_wakeup_fd, validate the file
- descriptor argument.
-
-- Issue #16422: For compatibility with the Python version, the C version of
- decimal now uses strings instead of integers for rounding mode constants.
-
-- Issue #15861: tkinter now correctly works with lists and tuples containing
- strings with whitespaces, backslashes or unbalanced braces.
-
-- Issue #9720: zipfile now writes correct local headers for files larger than
- 4 GiB.
-
-- Issue #16955: Fix the poll() method for multiprocessing's socket
- connections on Windows.
-
-- SSLContext.load_dh_params() now properly closes the input file.
-
-- Issue #15031: Refactor some .pyc management code to cut down on code
- duplication. Thanks to Ronan Lamy for the report and taking an initial stab
- at the problem.
-
-- Issue #16398: Optimize deque.rotate() so that it only moves pointers
- and doesn't touch the underlying data with increfs and decrefs.
-
-- Issue #16900: Issue a ResourceWarning when an ssl socket is left unclosed.
-
-- Issue #13899: \A, \Z, and \B now correctly match the A, Z, and B literals
- when used inside character classes (e.g. '[\A]'). Patch by Matthew Barnett.
-
-- Issue #15545: Fix regression in sqlite3's iterdump method where it was
- failing if the connection used a row factory (such as sqlite3.Row) that
- produced unsortable objects. (Regression was introduced by fix for 9750).
-
-- fcntl: add F_DUPFD_CLOEXEC constant, available on Linux 2.6.24+.
-
-- Issue #15972: Fix error messages when os functions expecting a file name or
- file descriptor receive the incorrect type.
-
-- Issue #8109: The ssl module now has support for server-side SNI, thanks
- to a :meth:`SSLContext.set_servername_callback` method. Patch by Daniel
- Black.
-
-- Issue #16860: In tempfile, use O_CLOEXEC when available to set the
- close-on-exec flag atomically.
-
-- Issue #16674: random.getrandbits() is now 20-40% faster for small integers.
-
-- Issue #16009: JSON error messages now provide more information.
-
-- Issue #16828: Fix error incorrectly raised by bz2.compress(b'') and
- bz2.BZ2Compressor.compress(b''). Initial patch by Martin Packman.
-
-- Issue #16833: In http.client.HTTPConnection, do not concatenate the request
- headers and body when the payload exceeds 16 KB, since it can consume more
- memory for no benefit. Patch by Benno Leslie.
-
-- Issue #16541: tk_setPalette() now works with keyword arguments.
-
-- Issue #16820: In configparser, `parser.popitem()` no longer raises ValueError.
- This makes `parser.clean()` work correctly.
-
-- Issue #16820: In configparser, ``parser['section'] = {}`` now preserves
- section order within the parser. This makes `parser.update()` preserve section
- order as well.
-
-- Issue #16820: In configparser, ``parser['DEFAULT'] = {}`` now correctly
- clears previous values stored in the default section. Same goes for
- ``parser.update({'DEFAULT': {}})``.
-
-- Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy.
-
-- Issue #16787: Increase asyncore and asynchat default output buffers size, to
- decrease CPU usage and increase throughput.
-
-- Issue #10527: make multiprocessing use poll() instead of select() if available.
-
-- Issue #16688: Now regexes contained backreferences correctly work with
- non-ASCII strings. Patch by Matthew Barnett.
-
-- Issue #16486: Make aifc files act as context managers.
-
-- Issue #16485: Now file descriptors are closed if file header patching failed
- on closing an aifc file.
-
-- Issue #16640: Run less code under a lock in sched module.
-
-- Issue #16165: sched.scheduler.run() no longer blocks a scheduler for other
- threads.
-
-- Issue #16641: Default values of sched.scheduler.enter() are no longer
- modifiable.
-
-- Issue #16618: Make glob.glob match consistently across strings and bytes
- regarding leading dots. Patch by Serhiy Storchaka.
-
-- Issue #16788: Add samestat to Lib/ntpath.py
-
-- Issue #16713: Parsing of 'tel' urls using urlparse separates params from
- path.
-
-- Issue #16443: Add docstrings to regular expression match objects.
- Patch by Anton Kasyanov.
-
-- Issue #15701: Fix HTTPError info method call to return the headers information.
-
-- Issue #16752: Add a missing import to modulefinder. Patch by Berker Peksag.
-
-- Issue #16646: ftplib.FTP.makeport() might lose socket error details.
- (patch by Serhiy Storchaka)
-
-- Issue #16626: Fix infinite recursion in glob.glob() on Windows when the
- pattern contains a wildcard in the drive or UNC path. Patch by Serhiy
- Storchaka.
-
-- Issue #15783: Except for the number methods, the C version of decimal now
- supports all None default values present in decimal.py. These values were
- largely undocumented.
-
-- Issue #11175: argparse.FileType now accepts encoding and errors
- arguments. Patch by Lucas Maystre.
-
-- Issue #16488: epoll() objects now support the `with` statement. Patch
- by Serhiy Storchaka.
-
-- Issue #16298: In HTTPResponse.read(), close the socket when there is no
- Content-Length and the incoming stream is finished. Patch by Eran
- Rundstein.
-
-- Issue #16049: Add abc.ABC class to enable the use of inheritance to create
- ABCs, rather than the more cumbersome metaclass=ABCMeta. Patch by Bruno
- Dupuis.
-
-- Expose the TCP_FASTOPEN and MSG_FASTOPEN flags in socket when they're
- available.
-
-- Issue #15701: Add a .headers attribute to urllib.error.HTTPError. Patch
- contributed by Berker Peksag.
-
-- Issue #15872: Fix 3.3 regression introduced by the new fd-based shutil.rmtree
- that caused it to not ignore certain errors when ignore_errors was set.
- Patch by Alessandro Moura and Serhiy Storchaka.
-
-- Issue #16248: Disable code execution from the user's home directory by
- tkinter when the -E flag is passed to Python. Patch by Zachary Ware.
-
-- Issue #13390: New function :func:`sys.getallocatedblocks()` returns the
- number of memory blocks currently allocated.
-
-- Issue #16628: Fix a memory leak in ctypes.resize().
-
-- Issue #13614: Fix setup.py register failure with invalid rst in description.
- Patch by Julien Courteau and Pierre Paul Lefebvre.
-
-- Issue #13512: Create ~/.pypirc securely (CVE-2011-4944). Initial patch by
- Philip Jenvey, tested by Mageia and Debian.
-
-- Issue #7719: Make distutils ignore ``.nfs*`` files instead of choking later
- on. Initial patch by SilentGhost and Jeff Ramnani.
-
-- Issue #13120: Allow to call pdb.set_trace() from thread.
- Patch by Ilya Sandler.
-
-- Issue #16585: Make CJK encoders support error handlers that return bytes per
- PEP 383.
-
-- Issue #10182: The re module doesn't truncate indices to 32 bits anymore.
- Patch by Serhiy Storchaka.
-
-- Issue #16333: use (",", ": ") as default separator in json when indent is
- specified, to avoid trailing whitespace. Patch by Serhiy Storchaka.
-
-- Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous
- list() calls aren't added to filter(), map(), and zip() which are directly
- passed enumerate().
-
-- Issue #16464: Reset the Content-Length header when a urllib Request is reused
- with new data.
-
-- Issue #12848: The pure Python pickle implementation now treats object
- lengths as unsigned 32-bit integers, like the C implementation does.
- Patch by Serhiy Storchaka.
-
-- Issue #16423: urllib.request now has support for ``data:`` URLs. Patch by
- Mathias Panzenböck.
-
-- Issue #4473: Add a POP3.stls() to switch a clear-text POP3 session into
- an encrypted POP3 session, on supported servers. Patch by Lorenzo Catucci.
-
-- Issue #4473: Add a POP3.capa() method to query the capabilities advertised
- by the POP3 server. Patch by Lorenzo Catucci.
-
-- Issue #4473: Ensure the socket is shutdown cleanly in POP3.close().
- Patch by Lorenzo Catucci.
-
-- Issue #16522: added FAIL_FAST flag to doctest.
-
-- Issue #15627: Add the importlib.abc.InspectLoader.source_to_code() method.
-
-- Issue #16408: Fix file descriptors not being closed in error conditions
- in the zipfile module. Patch by Serhiy Storchaka.
-
-- Issue #14631: Add a new :class:`weakref.WeakMethod` to simulate weak
- references to bound methods.
-
-- Issue #16469: Fix exceptions from float -> Fraction and Decimal -> Fraction
- conversions for special values to be consistent with those for float -> int
- and Decimal -> int. Patch by Alexey Kachayev.
-
-- Issue #16481: multiprocessing no longer leaks process handles on Windows.
-
-- Issue #12428: Add a pure Python implementation of functools.partial().
- Patch by Brian Thorne.
-
-- Issue #16140: The subprocess module no longer double closes its child
- subprocess.PIPE parent file descriptors on child error prior to exec().
-
-- Remove a bare print to stdout from the subprocess module that could have
- happened if the child process wrote garbage to its pre-exec error pipe.
-
-- The subprocess module now raises its own SubprocessError instead of a
- RuntimeError in various error situations which should not normally happen.
-
-- Issue #16327: The subprocess module no longer leaks file descriptors
- used for stdin/stdout/stderr pipes to the child when fork() fails.
-
-- Issue #14396: Handle the odd rare case of waitpid returning 0 when not
- expected in subprocess.Popen.wait().
-
-- Issue #16411: Fix a bug where zlib.decompressobj().flush() might try to access
- previously-freed memory. Patch by Serhiy Storchaka.
-
-- Issue #16357: fix calling accept() on a SSLSocket created through
- SSLContext.wrap_socket(). Original patch by Jeff McNeil.
-
-- Issue #16409: The reporthook callback made by the legacy
- urllib.request.urlretrieve API now properly supplies a constant non-zero
- block_size as it did in Python 3.2 and 2.7. This matches the behavior of
- urllib.request.URLopener.retrieve.
-
-- Issue #16431: Use the type information when constructing a Decimal subtype
- from a Decimal argument.
-
-- Issue #15641: Clean up deprecated classes from importlib
- Patch by Taras Lyapun.
-
-- Issue #16350: zlib.decompressobj().decompress() now accumulates data from
- successive calls after EOF in unused_data, instead of only saving the argument
- to the last call. decompressobj().flush() now correctly sets unused_data and
- unconsumed_tail. A bug in the handling of MemoryError when setting the
- unconsumed_tail attribute has also been fixed. Patch by Serhiy Storchaka.
-
-- Issue #12759: sre_parse now raises a proper error when the name of the group
- is missing. Initial patch by Serhiy Storchaka.
-
-- Issue #16152: fix tokenize to ignore whitespace at the end of the code when
- no newline is found. Patch by Ned Batchelder.
-
-- Issue #16284: Prevent keeping unnecessary references to worker functions
- in concurrent.futures ThreadPoolExecutor.
-
-- Issue #16230: Fix a crash in select.select() when one the lists changes
- size while iterated on. Patch by Serhiy Storchaka.
-
-- Issue #16228: Fix a crash in the json module where a list changes size
- while it is being encoded. Patch by Serhiy Storchaka.
-
-- Issue #16351: New function gc.get_stats() returns per-generation collection
- statistics.
-
-- Issue #14897: Enhance error messages of struct.pack and
- struct.pack_into. Patch by Matti Mäki.
-
-- Issue #16316: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions.
- Patch by Serhiy Storchaka.
-
-- Issue #12890: cgitb no longer prints spurious <p> tags in text
- mode when the logdir option is specified.
-
-- Issue #16307: Fix multiprocessing.Pool.map_async not calling its callbacks.
- Patch by Janne Karila.
-
-- Issue #16305: Fix a segmentation fault occurring when interrupting
- math.factorial.
-
-- Issue #16116: Fix include and library paths to be correct when building C
- extensions in venvs.
-
-- Issue #16245: Fix the value of a few entities in html.entities.html5.
-
-- Issue #16301: Fix the localhost verification in urllib/request.py for file://
- urls.
-
-- Issue #16250: Fix the invocations of URLError which had misplaced filename
- attribute for exception.
-
-- Issue #10836: Fix exception raised when file not found in urlretrieve
- Initial patch by Ezio Melotti.
-
-- Issue #14398: Fix size truncation and overflow bugs in the bz2 module.
-
-- Issue #12692: Fix resource leak in urllib.request when talking to an HTTP
- server that does not include a ``Connection: close`` header in its responses.
-
-- Issue #12034: Fix bogus caching of result in check_GetFinalPathNameByHandle.
- Patch by Atsuo Ishimoto.
-
-- Improve performance of `lzma.LZMAFile` (see also issue #16034).
-
-- Issue #16220: wsgiref now always calls close() on an iterable response.
- Patch by Brent Tubbs.
-
-- Issue #16270: urllib may hang when used for retrieving files via FTP by using
- a context manager. Patch by Giampaolo Rodola'.
-
-- Issue #16461: Wave library should be able to deal with 4GB wav files,
- and sample rate of 44100 Hz.
-
-- Issue #16176: Properly identify Windows 8 via platform.platform()
-
-- Issue #16088: BaseHTTPRequestHandler's send_error method includes a
- Content-Length header in it's response now. Patch by Antoine Pitrou.
-
-- Issue #16114: The subprocess module no longer provides a misleading error
- message stating that args[0] did not exist when either the cwd or executable
- keyword arguments specified a path that did not exist.
-
-- Issue #16169: Fix ctypes.WinError()'s confusion between errno and winerror.
-
-- Issue #16110: logging.fileConfig now accepts a pre-initialised ConfigParser
- instance.
-
-- Issue #1492704: shutil.copyfile() raises a distinct SameFileError now if
- source and destination are the same file. Patch by Atsuo Ishimoto.
-
-- Issue #13896: Make shelf instances work with 'with' as context managers.
- Original patch by Filip Gruszczyński.
-
-- Issue #15417: Add support for csh and fish in venv activation scripts.
-
-- Issue #14377: ElementTree.write and some of the module-level functions have
- a new parameter - *short_empty_elements*. It controls how elements with no
- contents are emitted.
-
-- Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element
- element_factory (fixes a regression in SimpleTAL).
-
-- Issue #9650: List commonly used format codes in time.strftime and
- time.strptime docsttings. Original patch by Mike Hoy.
-
-- Issue #15452: logging configuration socket listener now has a verify option
- that allows an application to apply a verification function to the
- received configuration data before it is acted upon.
-
-- Issue #16034: Fix performance regressions in the new `bz2.BZ2File`
- implementation. Initial patch by Serhiy Storchaka.
-
-- `pty.spawn()` now returns the child process status returned by `os.waitpid()`.
-
-- Issue #15756: `subprocess.poll()` now properly handles `errno.ECHILD` to
- return a returncode of 0 when the child has already exited or cannot be waited
- on.
-
-- Issue #15323: Improve failure message of `Mock.assert_called_once_with()`.
-
-- Issue #16064: ``unittest -m`` claims executable is "python", not "python3".
-
-- Issue #12376: Pass on parameters in `TextTestResult.__init__()` super call.
-
-- Issue #15222: Insert blank line after each message in mbox mailboxes.
-
-- Issue #16013: Fix `csv.Reader` parsing issue with ending quote characters.
- Patch by Serhiy Storchaka.
-
-- Issue #15421: Fix an OverflowError in `Calendar.itermonthdates()` after
- `datetime.MAXYEAR`. Patch by Cédric Krier.
-
-- Issue #16112: platform.architecture does not correctly escape argument to
- /usr/bin/file. Patch by David Benjamin.
-
-- Issue #15970: `xml.etree.ElementTree` now serializes correctly the empty HTML
- elements 'meta' and 'param'.
-
-- Issue #15842: The `SocketIO.{readable,writable,seekable}` methods now raise
- ValueError when the file-like object is closed. Patch by Alessandro Moura.
-
-- Issue #15876: Fix a refleak in the `curses` module: window.encoding.
-
-- Issue #15881: Fix `atexit` hook in `multiprocessing`. Original patch by Chris
- McDonough.
-
-- Issue #15841: The readable(), writable() and seekable() methods of
- `io.BytesIO` and `io.StringIO` objects now raise ValueError when the object
- has been closed. Patch by Alessandro Moura.
-
-- Issue #15447: Use `subprocess.DEVNULL` in webbrowser, instead of opening
- `os.devnull` explicitly and leaving it open.
-
-- Issue #15509: `webbrowser.UnixBrowser` no longer passes empty arguments to
- Popen when ``%action`` substitutions produce empty strings.
-
-- Issue #12776, issue #11839: Call `argparse` type function (specified by
- add_argument) only once. Before, the type function was called twice in the
- case where the default was specified and the argument was given as well. This
- was especially problematic for the FileType type, as a default file would
- always be opened, even if a file argument was specified on the command line.
-
-- Issue #15906: Fix a regression in argparse caused by the preceding change,
- when ``action='append'``, ``type='str'`` and ``default=[]``.
-
-- Issue #16113: Added sha3 module based on the Keccak reference implementation
- 3.2. The `hashlib` module has four additional hash algorithms: `sha3_224`,
- `sha3_256`, `sha3_384` and `sha3_512`. As part of the patch some common
- code was moved from _hashopenssl.c to hashlib.h.
-
-- ctypes.call_commethod was removed, since its only usage was in the defunct
- samples directory.
-
-- Issue #16692: Added TLSv1.1 and TLSv1.2 support for the ssl modules.
-
-- Issue #16832: add abc.get_cache_token() to expose cache validity checking
- support in ABCMeta.
-
-IDLE
-----
-
-- Issue #18429: Format / Format Paragraph, now works when comment blocks
- are selected. As with text blocks, this works best when the selection
- only includes complete lines.
-
-- Issue #18226: Add docstrings and unittests for FormatParagraph.py.
- Original patches by Todd Rovito and Phil Webster.
-
-- Issue #18279: Format - Strip trailing whitespace no longer marks a file as
- changed when it has not been changed. This fix followed the addition of a
- test file originally written by Phil Webster (the issue's main goal).
-
-- Issue #7136: In the Idle File menu, "New Window" is renamed "New File".
- Patch by Tal Einat, Roget Serwy, and Todd Rovito.
-
-- Remove dead imports of imp.
-
-- Issue #18196: Avoid displaying spurious SystemExit tracebacks.
-
-- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition.
-
-- Issue #17511: Keep IDLE find dialog open after clicking "Find Next".
- Original patch by Sarah K.
-
-- Issue #18055: Move IDLE off of imp and on to importlib.
-
-- Issue #15392: Create a unittest framework for IDLE.
- Initial patch by Rajagopalasarma Jayakrishnan.
- See Lib/idlelib/idle_test/README.txt for how to run Idle tests.
-
-- Issue #14146: Highlight source line while debugging on Windows.
-
-- Issue #17838: Allow sys.stdin to be reassigned.
-
-- Issue #13495: Avoid loading the color delegator twice in IDLE.
-
-- Issue #17798: Allow IDLE to edit new files when specified on command line.
-
-- Issue #14735: Update IDLE docs to omit "Control-z on Windows".
-
-- Issue #17532: Always include Options menu for IDLE on OS X.
- Patch by Guilherme Simões.
-
-- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit().
-
-- Issue #17657: Show full Tk version in IDLE's about dialog.
- Patch by Todd Rovito.
-
-- Issue #17613: Prevent traceback when removing syntax colorizer in IDLE.
-
-- Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE.
-
-- Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box.
-
-- Issue #17625: In IDLE, close the replace dialog after it is used.
-
-- Issue #14254: IDLE now handles readline correctly across shell restarts.
-
-- Issue #17614: IDLE no longer raises exception when quickly closing a file.
-
-- Issue #6698: IDLE now opens just an editor window when configured to do so.
-
-- Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer
- raises an exception.
-
-- Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo.
-
-- Issue #17114: IDLE now uses non-strict config parser.
-
-- Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase
- interface and support all mandatory methods and properties.
-
-- Issue #5066: Update IDLE docs. Patch by Todd Rovito.
-
-- Issue #16829: IDLE printing no longer fails if there are spaces or other
- special characters in the file path.
-
-- Issue #16491: IDLE now prints chained exception tracebacks.
-
-- Issue #16819: IDLE method completion now correctly works for bytes literals.
-
-- Issue #16504: IDLE now catches SyntaxErrors raised by tokenizer. Patch by
- Roger Serwy.
-
-- Issue #16511: Use default IDLE width and height if config param is not valid.
- Patch Serhiy Storchaka.
-
-- Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu
- Patch by Todd Rovito.
-
-- Issue #16123: IDLE - deprecate running without a subprocess.
- Patch by Roger Serwy.
-
-Tests
------
-
-- Issue #1666318: Add a test that shutil.copytree() retains directory
- permissions. Patch by Catherine Devlin.
-
-- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json
- and make them discoverable by unittest. Patch by Zachary Ware.
-
-- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).
-
-- Issue #18396: Fix spurious test failure in test_signal on Windows when
- faulthandler is enabled (Patch by Jeremy Kloth)
-
-- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess.
-
-- Issue #15415: Add new temp_dir() and change_cwd() context managers to
- test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek.
-
-- Issue #15494: test.support is now a package rather than a module (Initial
- patch by Indra Talip)
-
-- Issue #17944: test_zipfile now discoverable and uses subclassing to
- generate tests for different compression types. Fixed a bug with skipping
- some tests due to use of exhausted iterators.
-
-- Issue #18266: test_largefile now works with unittest test discovery and
- supports running only selected tests. Patch by Zachary Ware.
-
-- Issue #17767: test_locale now works with unittest test discovery.
- Original patch by Zachary Ware.
-
-- Issue #18375: Assume --randomize when --randseed is used for running the
- testsuite.
-
-- Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé.
-
-- Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds
- in ASN1_TIME fields.
-
-- Issue #18094: test_uuid no longer reports skipped tests as passed.
-
-- Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't
- accidentally hang.
-
-- Issue #17833: Fix test_gdb failures seen on machines where debug symbols
- for glibc are available (seen on PPC64 Linux).
-
-- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython.
- Initial patch by Dino Viehland.
-
-- Issue #11078: test___all__ now checks for duplicates in __all__.
- Initial patch by R. David Murray.
-
-- Issue #17712: Fix test_gdb failures on Ubuntu 13.04.
-
-- Issue #17835: Fix test_io when the default OS pipe buffer size is larger
- than one million bytes.
-
-- Issue #17065: Use process-unique key for winreg tests to avoid failures if
- test is run multiple times in parallel (eg: on a buildbot host).
-
-- Issue #12820: add tests for the xml.dom.minicompat module.
- Patch by John Chandler and Phil Connell.
-
-- Issue #17691: test_univnewlines now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17790: test_set now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17789: test_random now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17779: test_osx_env now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17766: test_iterlen now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17690: test_time now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17692: test_sqlite now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #11995: test_pydoc doesn't import all sys.path modules anymore.
-
-- Issue #17448: test_sax now skips if there are no xml parsers available
- instead of raising an ImportError.
-
-- Issue #11420: make test suite pass with -B/DONTWRITEBYTECODE set.
- Initial patch by Thomas Wouters.
-
-- Issue #10652: make tcl/tk tests run after __all__ test, patch by
- Zachary Ware.
-
-- Issue #11963: remove human verification from test_parser and test_subprocess.
-
-- Issue #11732: add a new suppress_crash_popup() context manager to test.support
- that disables crash popups on Windows and use it in test_faulthandler and
- test_capi.
-
-- Issue #13898: test_ssl no longer prints a spurious stack trace on Ubuntu.
-
-- Issue #17283: Share code between `__main__.py` and `regrtest.py` in
- `Lib/test`.
-
-- Issue #17249: convert a test in test_capi to use unittest and reap threads.
-
-- Issue #17107: Test client-side SNI support in urllib.request thanks to
- the new server-side SNI support in the ssl module. Initial patch by
- Daniel Black.
-
-- Issue #17041: Fix testing when Python is configured with the
- --without-doc-strings.
-
-- Issue #16923: Fix ResourceWarnings in test_ssl.
-
-- Issue #15539: Added regression tests for Tools/scripts/pindent.py.
-
-- Issue #17479: test_io now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17066: test_robotparser now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17334: test_index now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17333: test_imaplib now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17082: test_dbm* now work with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17079: test_ctypes now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17304: test_hash now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17303: test_future* now work with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #17163: test_file now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #16925: test_configparser now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #16918: test_codecs now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #16919: test_crypt now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #16910: test_bytes, test_unicode, and test_userstring now work with
- unittest test discovery. Patch by Zachary Ware.
-
-- Issue #16905: test_warnings now works with unittest test discovery.
- Initial patch by Berker Peksag.
-
-- Issue #16898: test_bufio now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #16888: test_array now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #16896: test_asyncore now works with unittest test discovery.
- Patch by Zachary Ware.
-
-- Issue #16897: test_bisect now works with unittest test discovery.
- Initial patch by Zachary Ware.
-
-- Issue #16852: test_genericpath, test_posixpath, test_ntpath, and test_macpath
- now work with unittest test discovery. Patch by Zachary Ware.
-
-- Issue #16748: test_heapq now works with unittest test discovery.
-
-- Issue #10646: Tests rearranged for os.samefile/samestat to check for not
- just symlinks but also hard links.
-
-- Issue #15302: Switch regrtest from using getopt to using argparse.
-
-- Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize
- options.
-
-- Issue #16702: test_urllib2_localnet tests now correctly ignores proxies for
- localhost tests.
-
-- Issue #16664: Add regression tests for glob's behaviour concerning entries
- starting with a ".". Patch by Sebastian Kreft.
-
-- Issue #13390: The ``-R`` option to regrtest now also checks for memory
- allocation leaks, using :func:`sys.getallocatedblocks()`.
+Documentation
+-------------
-- Issue #16559: Add more tests for the json module, including some from the
- official test suite at json.org. Patch by Serhiy Storchaka.
+- Merge in all documentation changes since branching 3.4.0rc1.
-- Issue #16661: Fix the `os.getgrouplist()` test by not assuming that it gives
- the same output as :command:`id -G`.
-- Issue #16115: Add some tests for the executable argument to
- subprocess.Popen(). Initial patch by Kushal Das.
+What's New in Python 3.4.0 release candidate 3?
+===============================================
-- Issue #16126: PyErr_Format format mismatch in _testcapimodule.c.
- Patch by Serhiy Storchaka.
+Release date: 2014-03-09
-- Issue #15304: Fix warning message when `os.chdir()` fails inside
- `test.support.temp_cwd()`. Patch by Chris Jerdonek.
+Core and Builtins
+-----------------
-- Issue #15802: Fix test logic in `TestMaildir.test_create_tmp()`. Patch by
- Serhiy Storchaka.
+- Issue #20786: Fix signatures for dict.__delitem__ and
+ property.__delete__ builtins.
-- Issue #15557: Added a test suite for the webbrowser module, thanks to Anton
- Barkovsky.
+Library
+-------
-- Issue #16698: Skip posix test_getgroups when built with OS X
- deployment target prior to 10.6.
+- Issue #20839: Don't trigger a DeprecationWarning in the still supported
+ pkgutil.get_loader() API when __loader__ isn't set on a module (nor
+ when pkgutil.find_loader() is called directly).
Build
-----
Build
-----
-- Output lib files for PGO build into PGO directory.
-
-- Pick up 32-bit launcher from PGO directory on 64-bit PGO build.
-
-- Drop ``PC\python_nt.h`` as it's not used. Add input dependency on custom
- build step.
-
-- Issue #15511: Drop explicit dependency on pythonxy.lib from _decimal amd64
- configuration.
-
-- Add missing PGI/PGO configurations for pywlauncher.
-
-- Issue #15645: Ensure 2to3 grammar pickles are properly installed.
+- Issue #12837: Silence a tautological comparison warning on OS X under Clang in
+ socketmodule.c.
-What's New in Python 3.3.0 Beta 2?
+
+What's New in Python 3.4.0 Beta 2?
==================================
-*Release date: 12-Aug-2012*
+Release date: 2014-01-05
Core and Builtins
-----------------
Tests
-----
-- Issue #15467: Move helpers for `__sizeof__()` tests into test_support. Patch
- by Serhiy Storchaka.
-
-- Issue #15320: Make iterating the list of tests thread-safe when running tests
- in multiprocess mode. Patch by Chris Jerdonek.
+- Issue #20055: Fix test_shutil under Windows with symlink privileges held.
+ Patch by Vajrasky Kok.
-- Issue #15168: Move `importlib.test` to `test.test_importlib`.
+- Issue #20070: Don't run test_urllib2net when network resources are not
+ enabled.
-- Issue #15091: Reactivate a test on UNIX which was failing thanks to a
- forgotten `importlib.invalidate_caches()` call.
+- Issue #19938: Re-enabled test_bug_1333982 in test_dis, which had been
+ disabled since 3.0 due to the changes in listcomp handling.
-- Issue #15230: Adopted a more systematic approach in the runpy tests.
+- Issue #19320: test_tcl no longer fails when wantobjects is false.
-- Issue #15300: Ensure the temporary test working directories are in the same
- parent folder when running tests in multiprocess mode from a Python build.
- Patch by Chris Jerdonek.
+- Issue #19919: Fix flaky SSL test. connect_ex() sometimes returns
+ EWOULDBLOCK on Windows or VMs hosted on Windows.
-- Issue #15284: Skip {send,recv}msg tests in test_socket when IPv6 is not
- enabled. Patch by Brian Brazil.
+- Issue #19912: Added tests for ntpath.splitunc().
-- Issue #15277: Fix a resource leak in support.py when IPv6 is disabled. Patch
- by Brian Brazil.
+- Issue #19828: Fixed test_site when the whole suite is run with -S.
-Build
------
+- Issue #19928: Implemented a test for repr() of cell objects.
-- Issue #11715: Fix multiarch detection without having Debian development tools
- (dpkg-dev) installed.
+- Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and
+ test_statistics when python is run with -OO.
-- Issue #15037: Build OS X installers with local copy of ncurses 5.9 libraries
- to avoid curses.unget_wch bug present in older versions of ncurses such as
- those shipped with OS X.
+- Issue #19926: Removed unneeded test_main from test_abstract_numbers.
+ Patch by Vajrasky Kok.
-- Issue #15560: Fix building _sqlite3 extension on OS X with an SDK. Also, for
- OS X installers, ensure consistent sqlite3 behavior and feature availability
- by building a local copy of libsqlite3 rather than depending on the wide range
- of versions supplied with various OS X releases.
+- Issue #19572: More skipped tests explicitly marked as skipped.
-- Issue #8847: Disable COMDAT folding in Windows PGO builds.
+- Issue #19595, #19987: Re-enabled a long-disabled test in test_winsound.
-- Issue #14018: Fix OS X Tcl/Tk framework checking when using OS X SDKs.
+- Issue #19588: Fixed tests in test_random that were silently skipped most
+ of the time. Patch by Julian Gindi.
-- Issue #16256: OS X installer now sets correct permissions for doc directory.
+Build
+-----
-- Issue #15431: Add _freeze_importlib project to regenerate importlib.h on
- Windows. Patch by Kristján Valur Jónsson.
+- Issue #19728: Enable pip installation by default on Windows.
-- Issue #14197: For OS X framework builds, ensure links to the shared library
- are created with the proper ABI suffix.
+- Issue #16136: Remove VMS support
-- Issue #14330: For cross builds, don't use host python, use host search paths
- for host compiler.
+- Issue #18215: Add script Tools/ssl/test_multiple_versions.py to compile and
+ run Python's unit tests with multiple versions of OpenSSL.
-- Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module.
+- Issue #19922: define _INCLUDE__STDC_A1_SOURCE in HP-UX to include mbstate_t
+ for mbrtowc().
-- Issue #15268: Search curses.h in /usr/include/ncursesw.
+- Issue #19788: kill_python(_d).exe is now run as a PreBuildEvent on the
+ pythoncore sub-project. This should prevent build errors due a previous
+ build's python(_d).exe still running.
+Documentation
+-------------
-What's New in Python 3.3.0 Beta 1?
-==================================
+- Issue #20265: Updated some parts of the Using Windows document.
-*Release date: 27-Jun-2012*
+- Issue #20266: Updated some parts of the Windows FAQ.
-Core and Builtins
------------------
+- Issue #20255: Updated the about and bugs pages.
-- Fix a (most likely) very rare memory leak when calling main() and not being
- able to decode a command-line argument.
+- Issue #20253: Fixed a typo in the ipaddress docs that advertised an
+ illegal attribute name. Found by INADA Naoki.
-- Issue #14815: Use Py_ssize_t instead of long for the object hash, to
- preserve all 64 bits of hash on Win64.
+- Issue #18840: Introduce the json module in the tutorial, and de-emphasize
+ the pickle module.
-- Issue #12268: File readline, readlines and read() or readall() methods
- no longer lose data when an underlying read system call is interrupted.
- IOError is no longer raised due to a read system call returning EINTR
- from within these methods.
+- Issue #19845: Updated the Compiling Python on Windows section.
-- Issue #11626: Add _SizeT functions to stable ABI.
+- Issue #19795: Improved markup of True/False constants.
-- Issue #15142: Fix reference leak when deallocating instances of types
- created using PyType_FromSpec().
+Tools/Demos
+-----------
-- Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on
- the work by Hirokazu Yamamoto.
+- Issue #19659: Added documentation for Argument Clinic.
-- Issue #15096: Removed support for ur'' as the raw notation isn't
- compatible with Python 2.x's raw unicode strings.
+- Issue #19976: Argument Clinic METH_NOARGS functions now always
+ take two parameters.
-- Issue #13783: Generator objects now use the identifier APIs internally
+
-- Issue #14874: Restore charmap decoding speed to pre-PEP 393 levels.
- Patch by Serhiy Storchaka.
+What's New in Python 3.4.0 Beta 1?
+==================================
-- Issue #15026: utf-16 encoding is now significantly faster (up to 10x).
- Patch by Serhiy Storchaka.
+Release date: 2013-11-24
-- Issue #11022: open() and io.TextIOWrapper are now calling
- locale.getpreferredencoding(False) instead of locale.getpreferredencoding()
- in text mode if the encoding is not specified. Don't change temporary the
- locale encoding using locale.setlocale(), use the current locale encoding
- instead of the user preferred encoding.
+Core and Builtins
+-----------------
-- Issue #14673: Add Eric Snow's sys.implementation implementation.
+- Use the repr of a module name in more places in import, especially
+ exceptions.
-- Issue #15038: Optimize python Locks on Windows.
+- Issue #19619: str.encode, bytes.decode and bytearray.decode now use an
+ internal API to throw LookupError for known non-text encodings, rather
+ than attempting the encoding or decoding operation and then throwing a
+ TypeError for an unexpected output type. (The latter mechanism remains
+ in place for third party non-text encodings)
-Library
--------
+- Issue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'.
+ Python now uses SipHash24 on all major platforms.
-- Issue #12288: Consider '0' and '0.0' as valid initialvalue
- for tkinter SimpleDialog.
+- Issue #12892: The utf-16* and utf-32* encoders no longer allow surrogate code
+ points (U+D800-U+DFFF) to be encoded. The utf-32* decoders no longer decode
+ byte sequences that correspond to surrogate code points. The surrogatepass
+ error handler now works with the utf-16* and utf-32* codecs. Based on
+ patches by Victor Stinner and Kang-Hao (Kenny) Lu.
-- Issue #15512: Add a __sizeof__ implementation for parser.
- Patch by Serhiy Storchaka.
+- Issue #17806: Added keyword-argument support for "tabsize" to
+ str/bytes.expandtabs().
-- Issue #15469: Add a __sizeof__ implementation for deque objects.
- Patch by Serhiy Storchaka.
+- Issue #17828: Output type errors in str.encode(), bytes.decode() and
+ bytearray.decode() now direct users to codecs.encode() or codecs.decode()
+ as appropriate.
-- Issue #15489: Add a __sizeof__ implementation for BytesIO objects.
- Patch by Serhiy Storchaka.
+- Issue #17828: The interpreter now attempts to chain errors that occur in
+ codec processing with a replacement exception of the same type that
+ includes the codec name in the error message. It ensures it only does this
+ when the creation of the replacement exception won't lose any information.
-- Issue #15487: Add a __sizeof__ implementation for buffered I/O objects.
- Patch by Serhiy Storchaka.
+- Issue #19466: Clear the frames of daemon threads earlier during the
+ Python shutdown to call objects destructors. So "unclosed file" resource
+ warnings are now corretly emitted for daemon threads.
-- Issue #15514: Correct __sizeof__ support for cpu_set.
- Patch by Serhiy Storchaka.
+- Issue #19514: Deduplicate some _Py_IDENTIFIER declarations.
+ Patch by Andrei Dorian Duma.
-- Issue #15177: Added dir_fd parameter to os.fwalk().
+- Issue #17936: Fix O(n**2) behaviour when adding or removing many subclasses
+ of a given type.
-- Issue #15061: Re-implemented hmac.compare_digest() in C to prevent further
- timing analysis and to support all buffer protocol aware objects as well as
- ASCII only str instances safely.
+- Issue #19428: zipimport now handles errors when reading truncated or invalid
+ ZIP archive.
-- Issue #15164: Change return value of platform.uname() from a
- plain tuple to a collections.namedtuple.
+- Issue #18408: Add a new PyFrame_FastToLocalsWithError() function to handle
+ exceptions when merging fast locals into f_locals of a frame.
+ PyEval_GetLocals() now raises an exception and return NULL on failure.
-- Support Mageia Linux in the platform module.
+- Issue #19369: Optimized the usage of __length_hint__().
-- Issue #11678: Support Arch linux in the platform module.
+- Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the
+ Python executable and not removed by the linker's optimizer.
-- Issue #15118: Change return value of os.uname() and os.times() from
- plain tuples to immutable iterable objects with named attributes
- (structseq objects).
+- Issue #19306: Add extra hints to the faulthandler module's stack
+ dumps that these are "upside down".
-- Speed up _decimal by another 10-15% by caching the thread local context
- that was last accessed. In the pi benchmark (64-bit platform, prec=9),
- _decimal is now only 1.5x slower than float.
+Library
+-------
-- Remove the packaging module, which is not ready for prime time.
+- Issue #3158: doctest can now find doctests in functions and methods
+ written in C.
-- Issue #15154: Add "dir_fd" parameter to os.rmdir, remove "rmdir"
- parameter from os.remove / os.unlink.
+- Issue #13477: Added command line interface to the tarfile module.
+ Original patch by Berker Peksag.
-- Issue #4489: Add a shutil.rmtree that isn't susceptible to symlink attacks.
- It is used automatically on platforms supporting the necessary os.openat()
- and os.unlinkat() functions. Main code by Martin von Löwis.
+- Issue #19674: inspect.signature() now produces a correct signature
+ for some builtins.
-- Issue #15156: HTMLParser now uses the new "html.entities.html5" dictionary.
+- Issue #19722: Added opcode.stack_effect(), which
+ computes the stack effect of bytecode instructions.
-- Issue #11113: add a new "html5" dictionary containing the named character
- references defined by the HTML5 standard and the equivalent Unicode
- character(s) to the html.entities module.
+- Issue #19735: Implement private function ssl._create_stdlib_context() to
+ create SSLContext objects in Python's stdlib module. It provides a single
+ configuration point and makes use of SSLContext.load_default_certs().
-- Issue #15114: the strict mode of HTMLParser and the HTMLParseError exception
- are deprecated now that the parser is able to parse invalid markup.
+- Issue #16203: Add re.fullmatch() function and regex.fullmatch() method,
+ which anchor the pattern at both ends of the string to match.
+ Original patch by Matthew Barnett.
-- Issue #3665: \u and \U escapes are now supported in unicode regular
- expressions. Patch by Serhiy Storchaka.
+- Issue #13592: Improved the repr for regular expression pattern objects.
+ Based on patch by Hugo Lopes Tavares.
-- Issue #15153: Added inspect.getgeneratorlocals to simplify white box
- testing of generator state updates
+- Issue #19641: Added the audioop.byteswap() function to convert big-endian
+ samples to little-endian and vice versa.
-- Issue #13062: Added inspect.getclosurevars to simplify testing stateful
- closures
+- Issue #15204: Deprecated the 'U' mode in file-like objects.
-- Issue #11024: Fixes and additional tests for Time2Internaldate.
+- Issue #17810: Implement PEP 3154, pickle protocol 4.
-- Issue #14626: Large refactoring of functions / parameters in the os module.
- Many functions now support "dir_fd" and "follow_symlinks" parameters;
- some also support accepting an open file descriptor in place of a path
- string. Added os.support_* collections as LBYL helpers. Removed many
- functions only previously seen in 3.3 alpha releases (often starting with
- "f" or "l", or ending with "at"). Originally suggested by Serhiy Storchaka;
- implemented by Larry Hastings.
+- Issue #19668: Added support for the cp1125 encoding.
-- Issue #15008: Implement PEP 362 "Signature Objects".
- Patch by Yury Selivanov.
+- Issue #19689: Add ssl.create_default_context() factory function. It creates
+ a new SSLContext object with secure default settings.
-- Issue: #15138: base64.urlsafe_{en,de}code() are now 3-4x faster.
+- Issue #19727: os.utime(..., None) is now potentially more precise
+ under Windows.
-- Issue #444582: Add shutil.which, for finding programs on the system path.
- Original patch by Erik Demaine, with later iterations by Jan Killian
- and Brian Curtin.
+- Issue #17201: ZIP64 extensions now are enabled by default. Patch by
+ William Mallard.
-- Issue #14837: SSL errors now have ``library`` and ``reason`` attributes
- describing precisely what happened and in which OpenSSL submodule. The
- str() of a SSLError is also enhanced accordingly.
+- Issue #19292: Add SSLContext.load_default_certs() to load default root CA
+ certificates from default stores or system stores. By default the method
+ loads CA certs for authentication of server certs.
-- Issue #9527: datetime.astimezone() method will now supply a class
- timezone instance corresponding to the system local timezone when
- called with no arguments.
+- Issue #19673: Add pathlib to the stdlib as a provisional module (PEP 428).
-- Issue #14653: email.utils.mktime_tz() no longer relies on system
- mktime() when timezone offest is supplied.
+- Issue #16596: pdb in a generator now properly skips over yield and
+ yield from rather than stepping out of the generator into its
+ caller. (This is essential for stepping through asyncio coroutines.)
-- Issue #14684: zlib.compressobj() and zlib.decompressobj() now support the use
- of predefined compression dictionaries. Original patch by Sam Rushing.
+- Issue #17916: Added dis.Bytecode.from_traceback() and
+ dis.Bytecode.current_offset to easily display "current instruction"
+ markers in the new disassembly API (Patch by Claudiu Popa).
-- Fix GzipFile's handling of filenames given as bytes objects.
+- Issue #19552: venv now supports bootstrapping pip into virtual environments
-- Issue #14772: Return destination values from some shutil functions.
+- Issue #17134: Finalize interface to Windows' certificate store. Cert and
+ CRL enumeration are now two functions. enum_certificates() also returns
+ purpose flags as set of OIDs.
-- Issue #15064: Implement context manager protocol for multiprocessing types
+- Issue #19555: Restore sysconfig.get_config_var('SO'), (and the distutils
+ equivalent) with a DeprecationWarning pointing people at $EXT_SUFFIX.
-- Issue #15101: Make pool finalizer avoid joining current thread.
+- Issue #8813: Add SSLContext.verify_flags to change the verification flags
+ of the context in order to enable certification revocation list (CRL)
+ checks or strict X509 rules.
-- Issue #14657: The frozen instance of importlib used for bootstrap is now
- also the module imported as importlib._bootstrap.
+- Issue #18294: Fix the zlib module to make it 64-bit safe.
-- Issue #14055: Add __sizeof__ support to _elementtree.
+- Issue #19682: Fix compatibility issue with old version of OpenSSL that
+ was introduced by Issue #18379.
-- Issue #15054: A bug in tokenize.tokenize that caused string literals
- with 'b' prefixes to be incorrectly tokenized has been fixed.
- Patch by Serhiy Storchaka.
+- Issue #14455: plistlib now supports binary plists and has an updated API.
-- Issue #15006: Allow equality comparison between naive and aware
- time or datetime objects.
+- Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on
+ big-endian platforms.
-- Issue #15036: Mailbox no longer throws an error if a flush is done
- between operations when removing or changing multiple items in mbox,
- MMDF, or Babyl mailboxes.
+- Issue #18379: SSLSocket.getpeercert() returns CA issuer AIA fields, OCSP
+ and CRL distribution points.
-- Issue #14059: Implement multiprocessing.Barrier.
+- Issue #18138: Implement cadata argument of SSLContext.load_verify_location()
+ to load CA certificates and CRL from memory. It supports PEM and DER
+ encoded strings.
-- Issue #15061: The inappropriately named hmac.secure_compare has been
- renamed to hmac.compare_digest, restricted to operating on bytes inputs
- only and had its documentation updated to more accurately reflect both its
- intent and its limitations
+- Issue #18775: Add name and block_size attribute to HMAC object. They now
+ provide the same API elements as non-keyed cryptographic hash functions.
-- Issue #13841: Make child processes exit using sys.exit() on Windows.
+- Issue #17276: MD5 as default digestmod for HMAC is deprecated. The HMAC
+ module supports digestmod names, e.g. hmac.HMAC('sha1').
-- Issue #14936: curses_panel was converted to PEP 3121 and PEP 384 API.
- Patch by Robin Schreiber.
+- Issue #19449: in csv's writerow, handle non-string keys when generating the
+ error message that certain keys are not in the 'fieldnames' list.
-- Issue #1667546: On platforms supporting tm_zone and tm_gmtoff fields
- in struct tm, time.struct_time objects returned by time.gmtime(),
- time.localtime() and time.strptime() functions now have tm_zone and
- tm_gmtoff attributes. Original patch by Paul Boddie.
+- Issue #13633: Added a new convert_charrefs keyword arg to HTMLParser that,
+ when True, automatically converts all character references.
-- Rename adjusted attribute to adjustable in time.get_clock_info() result.
+- Issue #2927: Added the unescape() function to the html module.
-- Issue #3518: Remove references to non-existent BaseManager.from_address()
- method.
+- Issue #8402: Added the escape() function to the glob module.
-- Issue #13857: Added textwrap.indent() function (initial patch by Ezra
- Berch)
+- Issue #17618: Add Base85 and Ascii85 encoding/decoding to the base64 module.
-- Issue #2736: Added datetime.timestamp() method.
+- Issue #19634: time.strftime("%y") now raises a ValueError on AIX when given a
+ year before 1900.
-- Issue #13854: Make multiprocessing properly handle non-integer
- non-string argument to SystemExit.
+- Fix test.support.bind_port() to not cause an error when Python was compiled
+ on a system with SO_REUSEPORT defined in the headers but run on a system
+ with an OS kernel that does not support that reasonably new socket option.
-- Issue #12157: Make pool.map() empty iterables correctly. Initial
- patch by mouad.
+- Fix compilation error under gcc of the ctypes module bundled libffi for arm.
-- Issue #11823: disassembly now shows argument counts on calls with keyword args.
+- Issue #19448: Add private API to SSL module to lookup ASN.1 objects by OID,
+ NID, short name and long name.
-- Issue #14711: os.stat_float_times() has been deprecated.
+- Issue #19282: dbm.open now supports the context management protocol. (Inital
+ patch by Claudiu Popa)
-- LZMAFile now accepts the modes "rb"/"wb"/"ab" as synonyms of "r"/"w"/"a".
+- Issue #8311: Added support for writing any bytes-like objects in the aifc,
+ sunau, and wave modules.
-- The bz2 and lzma modules now each contain an open() function, allowing
- compressed files to readily be opened in text mode as well as binary mode.
+- Issue #5202: Added support for unseekable files in the wave module.
-- BZ2File.__init__() and LZMAFile.__init__() now accept a file object as their
- first argument, rather than requiring a separate "fileobj" argument.
+- Issue #19544 and Issue #1180: Restore global option to ignore
+ ~/.pydistutils.cfg in Distutils, accidentally removed in backout of
+ distutils2 changes.
-- gzip.open() now accepts file objects as well as filenames.
+- Issue #19523: Closed FileHandler leak which occurred when delay was set.
-- Issue #14992: os.makedirs(path, exist_ok=True) would raise an OSError
- when the path existed and had the S_ISGID mode bit set when it was
- not explicitly asked for. This is no longer an exception as mkdir
- cannot control if the OS sets that bit for it or not.
+- Issue #19544 and Issue #6516: Restore support for --user and --group
+ parameters to sdist command accidentally rolled back as part of the
+ distutils2 rollback.
-- Issue #14989: Make the CGI enable option to http.server available via command
- line.
+- Issue #13674: Prevented time.strftime from crashing on Windows when given
+ a year before 1900 and a format of %y.
-- Issue #14987: Add a missing import statement to inspect.
+- Issue #19406: implementation of the ensurepip module (part of PEP 453).
+ Patch by Donald Stufft and Nick Coghlan.
-- Issue #1079: email.header.decode_header now correctly parses all the examples
- in RFC2047. There is a necessary visible behavior change: the leading and/or
- trailing whitespace on ASCII parts is now preserved.
+- Issue #19544 and Issue #6286: Restore use of urllib over http allowing use
+ of http_proxy for Distutils upload command, a feature accidentally lost
+ in the rollback of distutils2.
-- Issue #14969: Better handling of exception chaining in contextlib.ExitStack
+- Issue #19544 and Issue #7457: Restore the read_pkg_file method to
+ distutils.dist.DistributionMetadata accidentally removed in the undo of
+ distutils2.
-- Issue #14963: Convert contextlib.ExitStack.__exit__ to use an iterative
- algorithm (Patch by Alon Horev)
+- Issue #16685: Added support for any bytes-like objects in the audioop module.
+ Removed support for strings.
-- Issue #14785: Add sys._debugmallocstats() to help debug low-level memory
- allocation issues
+- Issue #7171: Add Windows implementation of ``inet_ntop`` and ``inet_pton``
+ to socket module. Patch by Atsuo Ishimoto.
-- Issue #14443: Ensure that .py files are byte-compiled with the correct Python
- executable within bdist_rpm even on older versions of RPM
+- Issue #19261: Added support for writing 24-bit samples in the sunau module.
-C-API
------
+- Issue #1097797: Added CP273 encoding, used on IBM mainframes in
+ Germany and Austria. Mapping provided by Michael Bierenfeld.
-- Issue #15146: Add PyType_FromSpecWithBases. Patch by Robin Schreiber.
+- Issue #1575020: Fixed support of 24-bit wave files on big-endian platforms.
-- Issue #15042: Add PyState_AddModule and PyState_RemoveModule. Add version
- guard for Py_LIMITED_API additions. Patch by Robin Schreiber.
+- Issue #19378: Fixed a number of cases in the dis module where the new
+ "file" parameter was not being honoured correctly
-- Issue #13783: Inadvertent additions to the public C API in the PEP 380
- implementation have either been removed or marked as private interfaces.
+- Issue #19378: Removed the "dis.Bytecode.show_info" method
-Extension Modules
------------------
+- Issue #19378: Renamed the "dis.Bytecode.display_code" method to
+ "dis.Bytecode.dis" and converted it to returning a string rather than
+ printing output.
-- Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c.
+- Issue #19378: the "line_offset" parameter in the new "dis.get_instructions"
+ API has been renamed to "first_line" (and the default value and usage
+ changed accordingly). This should reduce confusion with the more common use
+ of "offset" in the dis docs to refer to bytecode offsets.
-IDLE
-----
+- Issue #18678: Corrected spwd struct member names in spwd module:
+ sp_nam->sp_namp, and sp_pwd->sp_pwdp. The old names are kept as extra
+ structseq members, for backward compatibility.
-- Issue #9803: Don't close IDLE on saving if breakpoint is open.
- Patch by Roger Serwy.
+- Issue #6157: Fixed tkinter.Text.debug(). tkinter.Text.bbox() now raises
+ TypeError instead of TclError on wrong number of arguments. Original patch
+ by Guilherme Polo.
-- Issue #14962: Update text coloring in IDLE shell window after changing
- options. Patch by Roger Serwy.
+- Issue #10197: Rework subprocess.get[status]output to use subprocess
+ functionality and thus to work on Windows. Patch by Nick Coghlan
-Documentation
--------------
+- Issue #6160: The bbox() method of tkinter.Spinbox now returns a tuple of
+ integers instead of a string. Based on patch by Guilherme Polo.
-- Issue #15176: Clarified behavior, documentation, and implementation
- of os.listdir().
+- Issue #19403: contextlib.redirect_stdout is now reentrant
-- Issue #14982: Document that pkgutil's iteration functions require the
- non-standard iter_modules() method to be defined by an importer (something
- the importlib importers do not define).
+- Issue #19286: Directories in ``package_data`` are no longer added to
+ the filelist, preventing failure outlined in the ticket.
-- Issue #15081: Document PyState_FindModule.
- Patch by Robin Schreiber.
+- Issue #19480: HTMLParser now accepts all valid start-tag names as defined
+ by the HTML5 standard.
-- Issue #14814: Added first draft of ipaddress module API reference
+- Issue #15114: The html.parser module now raises a DeprecationWarning when the
+ strict argument of HTMLParser or the HTMLParser.error method are used.
-Tests
------
+- Issue #19410: Undo the special-casing removal of '' for
+ importlib.machinery.FileFinder.
-- Issue #15187: Bugfix: remove temporary directories test_shutil was leaving
- behind.
+- Issue #19424: Fix the warnings module to accept filename containing surrogate
+ characters.
-- Issue #14769: test_capi now has SkipitemTest, which cleverly checks
- for "parity" between PyArg_ParseTuple() and the Python/getargs.c static
- function skipitem() for all possible "format units".
+- Issue #19435: Fix directory traversal attack on CGIHttpRequestHandler.
-- test_nntplib now tolerates being run from behind NNTP gateways that add
- "X-Antivirus" headers to articles
+- Issue #19227: Remove pthread_atfork() handler. The handler was added to
+ solve #18747 but has caused issues.
-- Issue #15043: test_gdb is now skipped entirely if gdb security settings
- block loading of the gdb hooks
+- Issue #19420: Fix reference leak in module initalization code of
+ _hashopenssl.c
-- Issue #14963: Add test cases for exception handling behaviour
- in contextlib.ExitStack (Initial patch by Alon Horev)
+- Issue #19329: Optimized compiling charsets in regular expressions.
-Build
------
+- Issue #19227: Try to fix deadlocks caused by re-seeding then OpenSSL
+ pseudo-random number generator on fork().
-- Issue #13590: Improve support for OS X Xcode 4:
- * Try to avoid building Python or extension modules with problematic
- llvm-gcc compiler.
- * Since Xcode 4 removes ppc support, extension module builds now
- check for ppc compiler support and automatically remove ppc and
- ppc64 archs when not available.
- * Since Xcode 4 no longer install SDKs in default locations,
- extension module builds now revert to using installed headers
- and libs if the SDK used to build the interpreter is not
- available.
- * Update ./configure to use better defaults for universal builds;
- in particular, --enable-universalsdk=yes uses the Xcode default
- SDK and --with-universal-archs now defaults to "intel" if ppc
- not available.
+- Issue #16037: HTTPMessage.readheaders() raises an HTTPException when more than
+ 100 headers are read. Adapted from patch by Jyrki Pulliainen.
-- Issue #14225: Fix Unicode support for curses (#12567) on OS X
+- Issue #16040: CVE-2013-1752: nntplib: Limit maximum line lengths to 2048 to
+ prevent readline() calls from consuming too much memory. Patch by Jyrki
+ Pulliainen.
-- Issue #14928: Fix importlib bootstrap issues by using a custom executable
- (Modules/_freeze_importlib) to build Python/importlib.h.
+- Issue #16041: CVE-2013-1752: poplib: Limit maximum line lengths to 2048 to
+ prevent readline() calls from consuming too much memory. Patch by Jyrki
+ Pulliainen.
+- Issue #17997: Change behavior of ``ssl.match_hostname()`` to follow RFC 6125,
+ for security reasons. It now doesn't match multiple wildcards nor wildcards
+ inside IDN fragments.
-What's New in Python 3.3.0 Alpha 4?
-===================================
+- Issue #16039: CVE-2013-1752: Change use of readline in imaplib module to limit
+ line length. Patch by Emil Lind.
-*Release date: 31-May-2012*
+- Issue #19330: the unnecessary wrapper functions have been removed from the
+ implementations of the new contextlib.redirect_stdout and
+ contextlib.suppress context managers, which also ensures they provide
+ reasonable help() output on instances
-Core and Builtins
------------------
+- Issue #19393: Fix symtable.symtable function to not be confused when there are
+ functions or classes named "top".
-- Issue #14835: Make plistlib output empty arrays & dicts like OS X.
- Patch by Sidney San Martín.
+- Issue #18685: Restore re performance to pre-PEP 393 levels.
-- Issue #14744: Use the new _PyUnicodeWriter internal API to speed up
- str%args and str.format(args).
+- Issue #19339: telnetlib module is now using time.monotonic() when available
+ to compute timeout.
-- Issue #14930: Make memoryview objects weakrefable.
+- Issue #19399: fix sporadic test_subprocess failure.
-- Issue #14775: Fix a potential quadratic dict build-up due to the garbage
- collector repeatedly trying to untrack dicts.
+- Issue #13234: Fix os.listdir to work with extended paths on Windows.
+ Patch by Santoso Wijaya.
-- Issue #14857: fix regression in references to PEP 3135 implicit __class__
- closure variable (Reopens issue #12370)
+- Issue #19375: The site module adding a "site-python" directory to sys.path,
+ if it exists, is now deprecated.
-- Issue #14712 (PEP 405): Virtual environments. Implemented by Vinay Sajip.
+- Issue #19379: Lazily import linecache in the warnings module, to make
+ startup with warnings faster until a warning gets printed.
-- Issue #14660 (PEP 420): Namespace packages. Implemented by Eric Smith.
+- Issue #19288: Fixed the "in" operator of dbm.gnu databases for string
+ argument. Original patch by Arfrever Frehtes Taifersar Arahesis.
-- Issue #14494: Fix __future__.py and its documentation to note that
- absolute imports are the default behavior in 3.0 instead of 2.7.
- Patch by Sven Marnach.
+- Issue #19287: Fixed the "in" operator of dbm.ndbm databases for string
+ argument. Original patch by Arfrever Frehtes Taifersar Arahesis.
-- Issue #9260: A finer-grained import lock. Most of the import sequence
- now uses per-module locks rather than the global import lock, eliminating
- well-known issues with threads and imports.
+- Issue #19327: Fixed the working of regular expressions with too big charset.
-- Issue #14624: UTF-16 decoding is now 3x to 4x faster on various inputs.
- Patch by Serhiy Storchaka.
+- Issue #17400: New 'is_global' attribute for ipaddress to tell if an address
+ is allocated by IANA for global or private networks.
-- asdl_seq and asdl_int_seq are now Py_ssize_t sized.
+- Issue #19350: Increasing the test coverage of macurl2path. Patch by Colin
+ Williams.
-- Issue #14133 (PEP 415): Implement suppression of __context__ display with an
- attribute on BaseException. This replaces the original mechanism of PEP 409.
+- Issue #19365: Optimized the parsing of long replacement string in re.sub*()
+ functions.
-- Issue #14417: Mutating a dict during lookup now restarts the lookup instead
- of raising a RuntimeError (undoes issue #14205).
+- Issue #19352: Fix unittest discovery when a module can be reached
+ through several paths (e.g. under Debian/Ubuntu with virtualenv).
-- Issue #14738: Speed-up UTF-8 decoding on non-ASCII data. Patch by Serhiy
- Storchaka.
+- Issue #15207: Fix mimetypes to read from correct part of Windows registry
+ Original patch by Dave Chambers
-- Issue #14700: Fix two broken and undefined-behaviour-inducing overflow checks
- in old-style string formatting.
+- Issue #16595: Add prlimit() to resource module.
-Library
--------
+- Issue #19324: Expose Linux-specific constants in resource module.
-- Issue #14690: Use monotonic clock instead of system clock in the sched,
- subprocess and trace modules.
+- Load SSL's error strings in hashlib.
-- Issue #14443: Tell rpmbuild to use the correct version of Python in
- bdist_rpm. Initial patch by Ross Lagerwall.
+- Issue #18527: Upgrade internal copy of zlib to 1.2.8.
-- Issue #12515: email now registers a defect if it gets to EOF while parsing
- a MIME part without seeing the closing MIME boundary.
+- Issue #19274: Add a filterfunc parameter to PyZipFile.writepy.
-- Issue #1672568: email now always decodes base64 payloads, adding padding and
- ignoring non-base64-alphabet characters if needed, and registering defects
- for any such problems.
+- Issue #8964: fix platform._sys_version to handle IronPython 2.6+.
+ Patch by Martin Matusiak.
-- Issue #14925: email now registers a defect when the parser decides that there
- is a missing header/body separator line. MalformedHeaderDefect, which the
- existing code would never actually generate, is deprecated.
+- Issue #19413: Restore pre-3.3 reload() semantics of re-finding modules.
-- Issue #10365: File open dialog now works instead of crashing even when
- the parent window is closed before the dialog. Patch by Roger Serwy.
+- Issue #18958: Improve error message for json.load(s) while passing a string
+ that starts with a UTF-8 BOM.
-- Issue #8739: Updated smtpd to support RFC 5321, and added support for the
- RFC 1870 SIZE extension.
+- Issue #19307: Improve error message for json.load(s) while passing objects
+ of the wrong type.
-- Issue #665194: Added a localtime function to email.utils to provide an
- aware local datetime for use in setting Date headers.
+- Issue #16038: CVE-2013-1752: ftplib: Limit amount of data read by
+ limiting the call to readline(). Original patch by Michał
+ Jastrzębski and Giampaolo Rodola.
-- Issue #12586: Added new provisional policies that implement convenient
- unicode support for email headers. See What's New for details.
+- Issue #17087: Improved the repr for regular expression match objects.
-- Issue #14731: Refactored email Policy framework to support full backward
- compatibility with Python 3.2 by default yet allow for the introduction of
- new features through new policies. Note that Policy.must_be_7bit is renamed
- to cte_type.
+Tests
+-----
-- Issue #14876: Use user-selected font for highlight configuration.
+- Issue #19664: test_userdict's repr test no longer depends on the order
+ of dict elements.
-- Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals.
- Have ascii characters in help.
+- Issue #19440: Clean up test_capi by removing an unnecessary __future__
+ import, converting from test_main to unittest.main, and running the
+ _testcapi module tests as subTests of a unittest TestCase method.
-- Issue #14548: Make multiprocessing finalizers check pid before
- running to cope with possibility of gc running just after fork.
+- Issue #19378: the main dis module tests are now run with both stdout
+ redirection *and* passing an explicit file parameter
-- Issue #14036: Add an additional check to validate that port in urlparse does
- not go in illegal range and returns None.
+- Issue #19378: removed the not-actually-helpful assertInstructionMatches
+ and assertBytecodeExactlyMatches helpers from bytecode_helper
-- Issue #14862: Add missing names to os.__all__
+- Issue #18702: All skipped tests now reported as skipped.
-- Issue #14875: Use float('inf') instead of float('1e66666') in the json module.
+- Issue #19439: interpreter embedding tests are now executed on Windows
+ (Patch by Zachary Ware)
-- Issue #13585: Added contextlib.ExitStack
+- Issue #19085: Added basic tests for all tkinter widget options.
-- PEP 3144, Issue #14814: Added the ipaddress module
+- Issue #19384: Fix test_py_compile for root user, patch by Claudiu Popa.
-- Issue #14426: Correct the Date format in Expires attribute of Set-Cookie
- Header in Cookie.py.
+Documentation
+-------------
-- Issue #14588: The types module now provide new_class() and prepare_class()
- functions to support PEP 3115 compliant dynamic class creation. Patch by
- Daniel Urban and Nick Coghlan.
+- Issue #18326: Clarify that list.sort's arguments are keyword-only. Also,
+ attempt to reduce confusion in the glossary by not saying there are
+ different "types" of arguments and parameters.
-- Issue #13152: Allow to specify a custom tabsize for expanding tabs in
- textwrap. Patch by John Feuerstein.
+Build
+-----
-- Issue #14721: Send the correct 'Content-length: 0' header when the body is an
- empty string ''. Initial Patch contributed by Arve Knudsen.
+- Issue #19358: "make clinic" now runs the Argument Clinic preprocessor
+ over all CPython source files.
-- Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for
- ports stricter.
+- Update SQLite to 3.8.1, xz to 5.0.5, and Tcl/Tk to 8.6.1 on Windows.
-- Issue #9374: Generic parsing of query and fragment portions of url for any
- scheme. Supported both by RFC3986 and RFC2396.
+- Issue #16632: Enable DEP and ASLR on Windows.
-- Issue #14798: Fix the functions in pyclbr to raise an ImportError
- when the first part of a dotted name is not a package. Patch by
- Xavier de Gaye.
+- Issue #17791: Drop PREFIX and EXEC_PREFIX definitions from PC/pyconfig.h
-- Issue #12098: multiprocessing on Windows now starts child processes
- using the same sys.flags as the current process. Initial patch by
- Sergey Mezentsev.
+- Add workaround for VS 2010 nmake clean issue. VS 2010 doesn't set up PATH
+ for nmake.exe correctly.
-- Issue #13031: Small speed-up for tarfile when unzipping tarfiles.
- Patch by Justin Peel.
+- Issue #19550: Implement Windows installer changes of PEP 453 (ensurepip).
-- Issue #14780: urllib.request.urlopen() now has a ``cadefault`` argument
- to use the default certificate store. Initial patch by James Oakley.
+- Issue #19520: Fix compiler warning in the _sha3 module on 32bit Windows.
-- Issue #14829: Fix bisect and range() indexing with large indices
- (>= 2 ** 32) under 64-bit Windows.
+- Issue #19356: Avoid using a C variabled named "_self", it's a reserved
+ word in some C compilers.
-- Issue #14732: The _csv module now uses PEP 3121 module initialization.
- Patch by Robin Schreiber.
+- Issue #15792: Correct build options on Win64. Patch by Jeremy Kloth.
-- Issue #14809: Add HTTP status codes introduced by RFC 6585 to http.server
- and http.client. Patch by EungJun Yi.
+- Issue #19373: Apply upstream change to Tk 8.5.15 fixing OS X 10.9
+ screen refresh problem for OS X installer build.
-- Issue #14777: tkinter may return undecoded UTF-8 bytes as a string when
- accessing the Tk clipboard. Modify clipboad_get() to first request type
- UTF8_STRING when no specific type is requested in an X11 windowing
- environment, falling back to the current default type STRING if that fails.
- Original patch by Thomas Kluyver.
+- Issue #19649: On OS X, the same set of file names are now installed
+ in bin directories for all configurations: non-framework vs framework,
+ and single arch vs universal builds. pythonx.y-32 is now always
+ installed for 64-bit/32-bit universal builds. The obsolete and
+ undocumented pythonw* symlinks are no longer installed anywhere.
-- Issue #14773: Fix os.fwalk() failing on dangling symlinks.
+- Issue #19553: PEP 453 - "make install" and "make altinstall" now install or
+ upgrade pip by default, using the bundled pip provided by the new ensurepip
+ module. A new configure option, --with-ensurepip[=upgrade|install|no], is
+ available to override the default ensurepip "--upgrade" option. The option
+ can also be set with "make [alt]install ENSUREPIP=[upgrade|install\no]".
-- Issue #12541: Be lenient with quotes around Realm field of HTTP Basic
- Authentation in urllib2.
+- Issue #19551: PEP 453 - the OS X installer now installs pip by default.
-- Issue #14807: move undocumented tarfile.filemode() to stat.filemode() and add
- doc entry. Add tarfile.filemode alias with deprecation warning.
+- Update third-party libraries for OS X installers: xz 5.0.3 -> 5.0.5,
+ SQLite 3.7.13 -> 3.8.1
-- Issue #13815: TarFile.extractfile() now returns io.BufferedReader objects.
+- Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.4.0b1.
+ Some third-party projects, such as Matplotlib and PIL/Pillow,
+ depended on being able to build with Tcl and Tk frameworks in
+ /Library/Frameworks.
-- Issue #14532: Add a secure_compare() helper to the hmac module, to mitigate
- timing attacks. Patch by Jon Oberheide.
+Tools/Demos
+-----------
-- Add importlib.util.resolve_name().
+- Issue #19730: Argument Clinic now supports all the existing PyArg
+ "format units" as legacy converters, as well as two new features:
+ "self converters" and the "version" directive.
-- Issue #14366: Support lzma compression in zip files.
- Patch by Serhiy Storchaka.
+- Issue #19552: pyvenv now bootstraps pip into virtual environments by
+ default (pass --without-pip to request the old behaviour)
-- Issue #13959: Introduce importlib.find_loader() and document
- imp.find_module/load_module as deprecated.
+- Issue #19390: Argument Clinic no longer accepts malformed Python
+ and C ids.
-- Issue #14082: shutil.copy2() now copies extended attributes, if possible.
- Patch by Hynek Schlawack.
+
-- Issue #13959: Make importlib.abc.FileLoader.load_module()/get_filename() and
- importlib.machinery.ExtensionFileLoader.load_module() have their single
- argument be optional. Allows for the replacement (and thus deprecation) of
- imp.load_source()/load_package()/load_compiled().
+What's New in Python 3.4.0 Alpha 4?
+===================================
-- Issue #13959: imp.get_suffixes() has been deprecated in favour of the new
- attributes on importlib.machinery: SOURCE_SUFFIXES, DEBUG_BYTECODE_SUFFIXES,
- OPTIMIZED_BYTECODE_SUFFIXES, BYTECODE_SUFFIXES, and EXTENSION_SUFFIXES. This
- led to an indirect deprecation of inspect.getmoduleinfo().
+Release date: 2013-10-20
-- Issue #14662: Prevent shutil failures on OS X when destination does not
- support chflag operations. Patch by Hynek Schlawack.
+Core and Builtins
+-----------------
-- Issue #14157: Fix time.strptime failing without a year on February 29th.
- Patch by Hynek Schlawack.
+- Issue #19301: Give classes and functions that are explicitly marked global a
+ global qualname.
-- Issue #14753: Make multiprocessing's handling of negative timeouts
- the same as it was in Python 3.2.
+- Issue #19279: UTF-7 decoder no longer produces illegal strings.
-- Issue #14583: Fix importlib bug when a package's __init__.py would first
- import one of its modules then raise an error.
+- Issue #16612: Add "Argument Clinic", a compile-time preprocessor for
+ C files to generate argument parsing code. (See PEP 436.)
-- Issue #14741: Fix missing support for Ellipsis ('...') in parser module.
+- Issue #18810: Shift stat calls in importlib.machinery.FileFinder such that
+ the code is optimistic that if something exists in a directory named exactly
+ like the possible package being searched for that it's in actuality a
+ directory.
-- Issue #14697: Fix missing support for set displays and set comprehensions in
- parser module.
+- Issue #18416: importlib.machinery.PathFinder now treats '' as the cwd and
+ importlib.machinery.FileFinder no longer special-cases '' to '.'. This leads
+ to modules imported from cwd to now possess an absolute file path for
+ __file__ (this does not affect modules specified by path on the CLI but it
+ does affect -m/runpy). It also allows FileFinder to be more consistent by not
+ having an edge case.
-- Issue #14701: Fix missing support for 'raise ... from' in parser module.
+- Issue #4555: All exported C symbols are now prefixed with either
+ "Py" or "_Py".
-- Add support for timeouts to the acquire() methods of
- multiprocessing's lock/semaphore/condition proxies.
+- Issue #19219: Speed up marshal.loads(), and make pyc files slightly
+ (5% to 10%) smaller.
-- Issue #13989: Add support for text mode to gzip.open().
+- Issue #19221: Upgrade Unicode database to version 6.3.0.
-- Issue #14127: The os.stat() result object now provides three additional
- fields: st_ctime_ns, st_mtime_ns, and st_atime_ns, providing those times as an
- integer with nanosecond resolution. The functions os.utime(), os.lutimes(),
- and os.futimes() now accept a new parameter, ns, which accepts mtime and atime
- as integers with nanosecond resolution.
+- Issue #16742: The result of the C callback PyOS_ReadlineFunctionPointer must
+ now be a string allocated by PyMem_RawMalloc() or PyMem_RawRealloc() (or NULL
+ if an error occurred), instead of a string allocated by PyMem_Malloc() or
+ PyMem_Realloc().
-- Issue #14127 and #10148: shutil.copystat now preserves exact mtime and atime
- on filesystems providing nanosecond resolution.
+- Issue #19199: Remove ``PyThreadState.tick_counter`` field
-IDLE
-----
+- Fix macro expansion of _PyErr_OCCURRED(), and make sure to use it in at
+ least one place so as to avoid regressions.
-- Issue #14958: Change IDLE systax highlighting to recognize all string and
- byte literals supported in Python 3.3.
+- Issue #19087: Improve bytearray allocation in order to allow cheap popping
+ of data at the front (slice deletion).
-- Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu.
+- Issue #19014: memoryview.cast() is now allowed on zero-length views.
-- Issue #14929: Stop IDLE 3.x from closing on Unicode decode errors when
- grepping. Patch by Roger Serwy.
+- Issue #18690: memoryview is now automatically registered with
+ collections.abc.Sequence
-- Issue #12510: Attempting to get invalid tooltip no longer closes IDLE.
- Other tooltipss have been corrected or improved and the number of tests
- has been tripled. Original patch by Roger Serwy.
+- Issue #19078: memoryview now correctly supports the reversed builtin
+ (Patch by Claudiu Popa)
-Tools/Demos
------------
+Library
+-------
-- Issue #14695: Bring Tools/parser/unparse.py support up to date with
- the Python 3.3 Grammar.
+- Issue #17457: unittest test discovery now works with namespace packages.
+ Patch by Claudiu Popa.
-Build
------
+- Issue #18235: Fix the sysconfig variables LDSHARED and BLDSHARED under AIX.
+ Patch by David Edelsohn.
-- Issue #14472: Update .gitignore. Patch by Matej Cepl.
+- Issue #18606: Add the new "statistics" module (PEP 450). Contributed
+ by Steven D'Aprano.
-- Upgrade Windows library versions: bzip 1.0.6, OpenSSL 1.0.1c.
+- Issue #12866: The audioop module now supports 24-bit samples.
-- Issue #14693: Under non-Windows platforms, hashlib's fallback modules are
- always compiled, even if OpenSSL is present at build time.
+- Issue #19254: Provide an optimized Python implementation of pbkdf2_hmac.
-- Issue #13210: Windows build now uses VS2010, ported from VS2008.
+- Issues #19201, Issue #19222, Issue #19223: Add "x" mode (exclusive creation)
+ in opening file to bz2, gzip and lzma modules. Patches by Tim Heaney and
+ Vajrasky Kok.
-C-API
------
+- Fix a reference count leak in _sre.
-- Issue #14705: The PyArg_Parse() family of functions now support the 'p' format
- unit, which accepts a "boolean predicate" argument. It converts any Python
- value into an integer--0 if it is "false", and 1 otherwise.
+- Issue #19262: Initial check in of the 'asyncio' package (a.k.a. Tulip,
+ a.k.a. PEP 3156). There are no docs yet, and the PEP is slightly
+ out of date with the code. This module will have *provisional* status
+ in Python 3.4.
-Documentation
--------------
+- Issue #19276: Fixed the wave module on 64-bit big-endian platforms.
-- Issue #14863: Update the documentation of os.fdopen() to reflect the
- fact that it's only a thin wrapper around open() anymore.
+- Issue #19266: Rename the new-in-3.4 ``contextlib.ignore`` context manager
+ to ``contextlib.suppress`` in order to be more consistent with existing
+ descriptions of that operation elsewhere in the language and standard
+ library documentation (Patch by Zero Piraeus).
-- Issue #14588: The language reference now accurately documents the Python 3
- class definition process. Patch by Nick Coghlan.
+- Issue #18891: Completed the new email package (provisional) API additions
+ by adding new classes EmailMessage, MIMEPart, and ContentManager.
-- Issue #14943: Correct a default argument value for winreg.OpenKey
- and correctly list the argument names in the function's explanation.
+- Issue #18281: Unused stat constants removed from `tarfile`.
+- Issue #18999: Multiprocessing now supports 'contexts' with the same API
+ as the module, but bound to specified start methods.
-What's New in Python 3.3.0 Alpha 3?
-===================================
+- Issue #18468: The re.split, re.findall, and re.sub functions and the group()
+ and groups() methods of match object now always return a string or a bytes
+ object.
-*Release date: 01-May-2012*
+- Issue #18725: The textwrap module now supports truncating multiline text.
-Core and Builtins
------------------
+- Issue #18776: atexit callbacks now display their full traceback when they
+ raise an exception.
-- Issue #14699: Fix calling the classmethod descriptor directly.
+- Issue #17827: Add the missing documentation for ``codecs.encode`` and
+ ``codecs.decode``.
-- Issue #14433: Prevent msvcrt crash in interactive prompt when stdin is closed.
+- Issue #19218: Rename collections.abc to _collections_abc in order to
+ speed up interpreter start.
-- Issue #14521: Make result of float('nan') and float('-nan') more consistent
- across platforms.
+- Issue #18582: Add 'pbkdf2_hmac' to the hashlib module. It implements PKCS#5
+ password-based key derivation functions with HMAC as pseudorandom function.
-- Issue #14646: __import__() sets __loader__ if the loader did not.
+- Issue #19131: The aifc module now correctly reads and writes sampwidth of
+ compressed streams.
-- Issue #14605: No longer have implicit entries in sys.meta_path. If
- sys.meta_path is found to be empty, raise ImportWarning.
+- Issue #19209: Remove import of copyreg from the os module to speed up
+ interpreter startup. stat_result and statvfs_result are now hard-coded to
+ reside in the os module.
-- Issue #14605: No longer have implicit entries in sys.path_hooks. If
- sys.path_hooks is found to be empty, a warning will be raised. None is now
- inserted into sys.path_importer_cache if no finder was discovered. This also
- means imp.NullImporter is no longer implicitly used.
+- Issue #19205: Don't import the 're' module in site and sysconfig module to
+ speed up interpreter start.
-- Issue #13903: Implement PEP 412. Individual dictionary instances can now share
- their keys with other dictionaries. Classes take advantage of this to share
- their instance dictionary keys for improved memory and performance.
+- Issue #9548: Add a minimal "_bootlocale" module that is imported by the
+ _io module instead of the full locale module.
-- Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError
- when repr() or str() is called on such an object.
+- Issue #18764: remove the 'print' alias for the PDB 'p' command so that it no
+ longer shadows the print function.
-- Issue #14658: Fix binding a special method to a builtin implementation of a
- special method with a different name.
+- Issue #19158: a rare race in BoundedSemaphore could allow .release() too
+ often.
-- Issue #14630: Fix a memory access bug for instances of a subclass of int
- with value 0.
+- Issue #15805: Add contextlib.redirect_stdout().
-- Issue #14339: Speed improvements to bin, oct and hex functions. Patch by
- Serhiy Storchaka.
+- Issue #18716: Deprecate the formatter module.
-- Issue #14385: It is now possible to use a custom type for the __builtins__
- namespace, instead of a dict. It can be used for sandboxing for example.
- Raise also a NameError instead of ImportError if __build_class__ name if not
- found in __builtins__.
+- Issue #10712: 2to3 has a new "asserts" fixer that replaces deprecated names
+ of unittest methods (e.g. failUnlessEqual -> assertEqual).
-- Issue #12599: Be more strict in accepting None compared to a false-like
- object for importlib.util.module_for_loader and
- importlib.machinery.PathFinder.
+- Issue #18037: 2to3 now escapes '\u' and '\U' in native strings.
-- Issue #14612: Fix jumping around with blocks by setting f_lineno.
+- Issue #17839: base64.decodebytes and base64.encodebytes now accept any
+ object that exports a 1 dimensional array of bytes (this means the same
+ is now also true for base64_codec)
-- Issue #14592: Attempting a relative import w/o __package__ or __name__ set in
- globals raises a KeyError.
+- Issue #19132: The pprint module now supports compact mode.
-- Issue #14607: Fix keyword-only arguments which started with ``__``.
+- Issue #19137: The pprint module now correctly formats instances of set and
+ frozenset subclasses.
-- Issue #10854: The ImportError raised when an extension module on Windows
- fails to import now uses the new path and name attributes from
- Issue #1559549.
+- Issue #10042: functools.total_ordering now correctly handles
+ NotImplemented being returned by the underlying comparison function (Patch
+ by Katie Miller)
-- Issue #13889: Check and (if necessary) set FPU control word before calling
- any of the dtoa.c string <-> float conversion functions, on MSVC builds of
- Python. This fixes issues when embedding Python in a Delphi app.
+- Issue #19092: contextlib.ExitStack now correctly reraises exceptions
+ from the __exit__ callbacks of inner context managers (Patch by Hrvoje
+ Nikšić)
-- __import__() now matches PEP 328 and documentation by defaulting 'index' to 0
- instead of -1 and removing support for negative values.
+- Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except
+ when necessary. Patch by Oscar Benjamin.
-- Issue #2377: Make importlib the implementation of __import__().
+- Issue #5845: In site.py, only load readline history from ~/.python_history
+ if no history has been read already. This avoids double writes to the
+ history file at shutdown.
-- Issue #1559549: ImportError now has 'name' and 'path' attributes that are set
- using keyword arguments to its constructor. They are currently not set by
- import as they are meant for use by importlib.
+- Properly initialize all fields of a SSL object after allocation.
-- Issue #14474: Save and restore exception state in thread.start_new_thread()
- while writing error message if the thread leaves a unhandled exception.
+- Issue #19095: SSLSocket.getpeercert() now raises ValueError when the
+ SSL handshake hasn't been done.
-- Issue #13019: Fix potential reference leaks in bytearray.extend(). Patch
- by Suman Saha.
+- Issue #4366: Fix building extensions on all platforms when --enable-shared
+ is used.
-Library
--------
+- Issue #19030: Fixed `inspect.getmembers` and `inspect.classify_class_attrs`
+ to attempt activating descriptors before falling back to a __dict__ search
+ for faulty descriptors. `inspect.classify_class_attrs` no longer returns
+ Attributes whose home class is None.
-- Issue #14768: os.path.expanduser('~/a') doesn't works correctly when HOME is '/'.
+C API
+-----
-- Issue #14371: Support bzip2 in zipfile module. Patch by Serhiy Storchaka.
+- Issue #1772673: The type of `char*` arguments now changed to `const char*`.
-- Issue #13183: Fix pdb skipping frames after hitting a breakpoint and running
- step. Patch by Xavier de Gaye.
+- Issue #16129: Added a `Py_SetStandardStreamEncoding` pre-initialization API
+ to allow embedding applications like Blender to force a particular
+ encoding and error handler for the standard IO streams (initial patch by
+ Bastien Montagne)
-- Issue #14696: Fix parser module to understand 'nonlocal' declarations.
+Tests
+-----
-- Issue #10941: Fix imaplib.Internaldate2tuple to produce correct result near
- the DST transition. Patch by Joe Peterson.
+- Issue #19275: Fix test_site on AMD64 Snow Leopard
-- Issue #9154: Fix parser module to understand function annotations.
+- Issue #14407: Fix unittest test discovery in test_concurrent_futures.
-- Issue #6085: In http.server.py SimpleHTTPServer.address_string returns the
- client ip address instead client hostname. Patch by Charles-François Natali.
+- Issue #18919: Unified and extended tests for audio modules: aifc, sunau and
+ wave.
-- Issue #14309: Deprecate time.clock(), use time.perf_counter() or
- time.process_time() instead.
+- Issue #18714: Added tests for ``pdb.find_function()``.
-- Issue #14428: Implement the PEP 418. Add time.get_clock_info(),
- time.perf_counter() and time.process_time() functions, and rename
- time.steady() to time.monotonic().
+Documentation
+-------------
-- Issue #14646: importlib.util.module_for_loader() now sets __loader__ and
- __package__ (when possible).
+- Issue #18758: Fixed and improved cross-references.
-- Issue #14664: It is now possible to use @unittest.skip{If,Unless} on a
- test class that doesn't inherit from TestCase (i.e. a mixin).
+- Issue #18972: Modernize email examples and use the argparse module in them.
-- Issue #4892: multiprocessing Connections can now be transferred over
- multiprocessing Connections. Patch by Richard Oudkerk (sbt).
+Build
+-----
-- Issue #14160: TarFile.extractfile() failed to resolve symbolic links when
- the links were not located in an archive subdirectory.
+- Issue #19130: Correct PCbuild/readme.txt, Python 3.3 and 3.4 require VS 2010.
-- Issue #14638: pydoc now treats non-string __name__ values as if they
- were missing, instead of raising an error.
+- Issue #15663: Update OS X 10.6+ installer to use Tcl/Tk 8.5.15.
-- Issue #13684: Fix httplib tunnel issue of infinite loops for certain sites
- which send EOF without trailing \r\n.
+- Issue #14499: Fix several problems with OS X universal build support:
+ 1. ppc arch detection for extension module builds broke with Xcode 5
+ 2. ppc arch detection in configure did not work on OS X 10.4
+ 3. -sysroot and -arch flags were unnecessarily duplicated
+ 4. there was no obvious way to configure an intel-32 only build.
-- Issue #14605: Add importlib.abc.FileLoader, importlib.machinery.(FileFinder,
- SourceFileLoader, SourcelessFileLoader, ExtensionFileLoader).
+- Issue #19019: Change the OS X installer build script to use CFLAGS instead
+ of OPT for special build options. By setting OPT, some compiler-specific
+ options like -fwrapv were overridden and thus not used, which could result
+ in broken interpreters when building with clang.
-- Issue #13959: imp.cache_from_source()/source_from_cache() now follow
- os.path.join()/split() semantics for path manipulation instead of its prior,
- custom semantics of caring the right-most path separator forward in path
- joining.
+
-- Issue #2193: Allow ":" character in Cookie NAME values.
+What's New in Python 3.4.0 Alpha 3?
+===================================
-- Issue #14629: tokenizer.detect_encoding will specify the filename in the
- SyntaxError exception if found at readline.__self__.name.
+Release date: 2013-09-29
-- Issue #14629: Raise SyntaxError in tokenizer.detect_encoding if the
- first two lines have non-UTF-8 characters without an encoding declaration.
+Core and Builtins
+-----------------
-- Issue #14308: Fix an exception when a "dummy" thread is in the threading
- module's active list after a fork().
+- Issue #18818: The "encodingname" part of PYTHONIOENCODING is now optional.
-- Issue #11750: The Windows API functions scattered in the _subprocess and
- _multiprocessing.win32 modules now live in a single module "_winapi".
- Patch by sbt.
+- Issue #19098: Prevent overflow in the compiler when the recursion limit is set
+ absurdly high.
-- Issue #14087: multiprocessing: add Condition.wait_for(). Patch by sbt.
+Library
+-------
-- Issue #14538: HTMLParser can now parse correctly start tags that contain
- a bare '/'.
+- Issue #18929: `inspect.classify_class_attrs()` now correctly finds class
+ attributes returned by `dir()` that are located in the metaclass.
-- Issue #14452: SysLogHandler no longer inserts a UTF-8 BOM into the message.
+- Issue #18950: Fix miscellaneous bugs in the sunau module.
+ Au_read.readframes() now updates current file position and reads correct
+ number of frames from multichannel stream. Au_write.writeframesraw() now
+ correctly updates current file position. Au_read.getnframes() now returns an
+ integer (as in Python 2). Au_read and Au_write now correctly works with file
+ object if start file position is not a zero.
-- Issue #14386: Expose the dict_proxy internal type as types.MappingProxyType.
+- Issue #18594: The fast path for collections.Counter() was never taken
+ due to an over-restrictive type check.
-- Issue #13959: Make imp.reload() always use a module's __loader__ to perform
- the reload.
+- Issue #19053: ZipExtFile.read1() with non-zero argument no more returns empty
+ bytes until end of data.
-- Issue #13959: Add imp.py and rename the built-in module to _imp, allowing for
- re-implementing parts of the module in pure Python.
+- logging: added support for Unix domain sockets to SocketHandler and
+ DatagramHandler.
-- Issue #13496: Fix potential overflow in bisect.bisect algorithm when applied
- to a collection of size > sys.maxsize / 2.
+- Issue #18996: TestCase.assertEqual() now more cleverly shorten differing
+ strings in error report.
-- Have importlib take advantage of ImportError's new 'name' and 'path'
- attributes.
+- Issue #19034: repr() for tkinter.Tcl_Obj now exposes string reperesentation.
-- Issue #14399: zipfile now recognizes that the archive has been modified even
- if only the comment is changed. In addition, the TypeError that results from
- trying to set a non-binary value as a comment is now raised at the time
- the comment is set rather than at the time the zipfile is written.
+- Issue #18978: ``urllib.request.Request`` now allows the method to be
+ indicated on the class and no longer sets it to None in ``__init__``.
-- trace.CoverageResults.is_ignored_filename() now ignores any name that starts
- with "<" and ends with ">" instead of special-casing "<string>" and
- "<doctest ".
+- Issue #18626: the inspect module now offers a basic command line
+ introspection interface (Initial patch by Claudiu Popa)
-- Issue #12537: The mailbox module no longer depends on knowledge of internal
- implementation details of the email package Message object.
+- Issue #3015: Fixed tkinter with wantobject=False. Any Tcl command call
+ returned empty string.
-- Issue #7978: socketserver now restarts the select() call when EINTR is
- returned. This avoids crashing the server loop when a signal is received.
- Patch by Jerzy Kozera.
+- Issue #19037: The mailbox module now makes all changes to maildir files
+ before moving them into place, to avoid race conditions with other programs
+ that may be accessing the maildir directory.
-- Issue #14522: Avoid duplicating socket handles in multiprocessing.connection.
- Patch by sbt.
+- Issue #14984: On POSIX systems, when netrc is called without a filename
+ argument (and therefore is reading the user's $HOME/.netrc file), it now
+ enforces the same security rules as typical ftp clients: the .netrc file must
+ be owned by the user that owns the process and must not be readable by any
+ other user.
-- Don't Py_DECREF NULL variable in io.IncrementalNewlineDecoder.
+- Issue #18873: The tokenize module now detects Python source code encoding
+ only in comment lines.
-- Issue #3033: Add displayof parameter to tkinter font. Patch by Guilherme Polo.
+- Issue #17764: Enable http.server to bind to a user specified network
+ interface. Patch contributed by Malte Swart.
-- Issue #14482: Raise a ValueError, not a NameError, when trying to create
- a multiprocessing Client or Listener with an AF_UNIX type address under
- Windows. Patch by Popa Claudiu.
+- Issue #18937: Add an assertLogs() context manager to unittest.TestCase
+ to ensure that a block of code emits a message using the logging module.
-- Issue #802310: Generate always unique tkinter font names if not directly passed.
+- Issue #17324: Fix http.server's request handling case on trailing '/'. Patch
+ contributed by Vajrasky Kok.
-- Issue #14151: Raise a ValueError, not a NameError, when trying to create
- a multiprocessing Client or Listener with an AF_PIPE type address under
- non-Windows platforms. Patch by Popa Claudiu.
+- Issue #19018: The heapq.merge() function no longer suppresses IndexError
+ in the underlying iterables.
-- Issue #14493: Use gvfs-open or xdg-open in webbrowser.
+- Issue #18784: The uuid module no longer attempts to load libc via ctypes.CDLL
+ if all the necessary functions have already been found in libuuid. Patch by
+ Evgeny Sologubov.
-Build
------
+- The :envvar:`PYTHONFAULTHANDLER` environment variable now only enables the
+ faulthandler module if the variable is non-empty. Same behaviour than other
+ variables like :envvar:`PYTHONDONTWRITEBYTECODE`.
-- "make touch" will now touch generated files that are checked into Mercurial,
- after a "hg update" which failed to bring the timestamps into the right order.
+- Issue #1565525: New function ``traceback.clear_frames`` will clear
+ the local variables of all the stack frames referenced by a traceback
+ object.
Tests
-----
Core and Builtins
-----------------
-- Issue #1683368: object.__new__ and object.__init__ raise a TypeError if they
- are passed arguments and their complementary method is not overridden.
-
-- Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as
- the module name that was not interned.
-
-- Issue #14331: Use significantly less stack space when importing modules by
- allocating path buffers on the heap instead of the stack.
-
-- Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not
- passed strings.
-
-- Issue #1469629: Allow cycles through an object's __dict__ slot to be
- collected. (For example if ``x.__dict__ is x``).
-
-- Issue #14205: dict lookup raises a RuntimeError if the dict is modified
- during a lookup.
-
-- Issue #14220: When a generator is delegating to another iterator with the
- yield from syntax, it needs to have its ``gi_running`` flag set to True.
-
-- Issue #14435: Remove dedicated block allocator from floatobject.c and rely
- on the PyObject_Malloc() api like all other objects.
-
-- Issue #14471: Fix a possible buffer overrun in the winreg module.
-
-- Issue #14288: Allow the serialization of builtin iterators
-
-Library
--------
-
-- Issue #14300: Under Windows, sockets created using socket.dup() now allow
- overlapped I/O. Patch by sbt.
-
-- Issue #13872: socket.detach() now marks the socket closed (as mirrored
- in the socket repr()). Patch by Matt Joiner.
-
-- Issue #14406: Fix a race condition when using ``concurrent.futures.wait(
- return_when=ALL_COMPLETED)``. Patch by Matt Joiner.
-
-- Issue #5136: deprecate old, unused functions from tkinter.
-
-- Issue #14416: syslog now defines the LOG_ODELAY and LOG_AUTHPRIV constants
- if they are defined in <syslog.h>.
-
-- Issue #14295: Add unittest.mock
-
-- Issue #7652: Add --with-system-libmpdec option to configure for linking
- the _decimal module against an installed libmpdec.
-
-- Issue #14380: MIMEText now defaults to utf-8 when passed non-ASCII unicode
- with no charset specified.
+- Issue #18942: sys._debugmallocstats() output was damaged on Windows.
-- Issue #10340: asyncore - properly handle EINVAL in dispatcher constructor on
- OSX; avoid to call handle_connect in case of a disconnected socket which
- was not meant to connect.
+- Issue #18571: Implementation of the PEP 446: file descriptors and file
+ handles are now created non-inheritable; add functions
+ os.get/set_inheritable(), os.get/set_handle_inheritable() and
+ socket.socket.get/set_inheritable().
-- Issue #14204: The ssl module now has support for the Next Protocol
- Negotiation extension, if available in the underlying OpenSSL library.
- Patch by Colin Marc.
+- Issue #11619: The parser and the import machinery do not encode Unicode
+ filenames anymore on Windows.
-- Issue #3035: Unused functions from tkinter are marked as pending deprecated.
+- Issue #18808: Non-daemon threads are now automatically joined when
+ a sub-interpreter is shutdown (it would previously dump a fatal error).
-- Issue #12757: Fix the skipping of doctests when python is run with -OO so
- that it works in unittest's verbose mode as well as non-verbose mode.
+- Remove support for compiling on systems without getcwd().
-- Issue #7652: Integrate the decimal floating point libmpdec library to speed
- up the decimal module. Performance gains of the new C implementation are
- between 10x and 100x, depending on the application.
+- Issue #18774: Remove last bits of GNU PTH thread code and thread_pth.h.
-- Issue #14269: SMTPD now conforms to the RFC and requires a HELO command
- before MAIL, RCPT, or DATA.
+- Issue #18771: Add optimization to set object lookups to reduce the cost
+ of hash collisions. The core idea is to inspect a second key/hash pair
+ for each cache line retrieved.
-- Issue #13694: asynchronous connect in asyncore.dispatcher does not set addr
- attribute.
+- Issue #16105: When a signal handler fails to write to the file descriptor
+ registered with ``signal.set_wakeup_fd()``, report an exception instead
+ of ignoring the error.
-- Issue #14344: fixed the repr of email.policy objects.
+- Issue #18722: Remove uses of the "register" keyword in C code.
-- Issue #11686: Added missing entries to email package __all__ lists
- (mostly the new Bytes classes).
+- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions.
-- Issue #14335: multiprocessing's custom Pickler subclass now inherits from
- the C-accelerated implementation. Patch by sbt.
+- Issue #16499: Add command line option for isolated mode.
-- Issue #10484: Fix the CGIHTTPServer's PATH_INFO handling problem.
+- Issue #15301: Parsing fd, uid, and gid parameters for builtins
+ in Modules/posixmodule.c is now far more robust.
-- Issue #11199: Fix the with urllib which hangs on particular ftp urls.
+- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc()
+ fail.
-- Improve the memory utilization and speed of functools.lru_cache.
+- Issue #17934: Add a clear() method to frame objects, to help clean up
+ expensive details (local variables) and break reference cycles.
-- Issue #14222: Use the new time.steady() function instead of time.time() for
- timeout in queue and threading modules to not be affected of system time
- update.
+- Issue #18780: %-formatting codes %d, %i, and %u now treat int-subclasses
+ as int (displays value of int-subclass instead of str(int-subclass) ).
-- Issue #13248: Remove lib2to3.pytree.Base.get_prefix/set_prefix.
+Library
+-------
-- Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash
- table internal to the pyexpat module's copy of the expat library to avoid a
- denial of service due to hash collisions. Patch by David Malcolm with some
- modifications by the expat project.
+- Issue #18808: Thread.join() now waits for the underlying thread state to
+ be destroyed before returning. This prevents unpredictable aborts in
+ Py_EndInterpreter() when some non-daemon threads are still running.
-- Issue #12818: format address no longer needlessly \ escapes ()s in names when
- the name ends up being quoted.
+- Issue #18458: Prevent crashes with newer versions of libedit. Its readline
+ emulation has changed from 0-based indexing to 1-based like gnu readline.
-- Issue #14062: BytesGenerator now correctly folds Header objects,
- including using linesep when folding.
+- Issue #18852: Handle case of ``readline.__doc__`` being ``None`` in the new
+ readline activation code in ``site.py``.
-- Issue #13839: When invoked on the command-line, the pstats module now
- accepts several filenames of profile stat files and merges them all.
- Patch by Matt Joiner.
+- Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in
+ the _sre module.
-- Issue #14291: Email now defaults to utf-8 for non-ASCII unicode headers
- instead of raising an error. This fixes a regression relative to 2.7.
+- Issue #18830: inspect.getclasstree() no longer produces duplicate entries even
+ when input list contains duplicates.
-- Issue #989712: Support using Tk without a mainloop.
+- Issue #18878: sunau.open now supports the context management protocol. Based on
+ patches by Claudiu Popa and R. David Murray.
-- Issue #3835: Refuse to use unthreaded Tcl in threaded Python.
+- Issue #18909: Fix _tkinter.tkapp.interpaddr() on Windows 64-bit, don't cast
+ 64-bit pointer to long (32 bits).
-- Issue #2843: Add new Tk API to Tkinter.
+- Issue #18876: The FileIO.mode attribute now better reflects the actual mode
+ under which the file was opened. Patch by Erik Bray.
-- Issue #14184: Increase the default stack size for secondary threads on
- Mac OS X to avoid interpreter crashes when using threads on 10.7.
+- Issue #16853: Add new selectors module.
-- Issue #14180: datetime.date.fromtimestamp(),
- datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp()
- now raise an OSError instead of ValueError if localtime() or gmtime() failed.
+- Issue #18882: Add threading.main_thread() function.
-- Issue #14180: time.ctime(), gmtime(), time.localtime(),
- datetime.date.fromtimestamp(), datetime.datetime.fromtimestamp() and
- datetime.datetime.utcfromtimestamp() now raises an OverflowError, instead of
- a ValueError, if the timestamp does not fit in time_t.
+- Issue #18901: The sunau getparams method now returns a namedtuple rather than
+ a plain tuple. Patch by Claudiu Popa.
-- Issue #14180: datetime.datetime.fromtimestamp() and
- datetime.datetime.utcfromtimestamp() now round microseconds towards zero
- instead of rounding to nearest with ties going away from zero.
+- Issue #17487: The result of the wave getparams method now is pickleable again.
+ Patch by Claudiu Popa.
-- Issue #10543: Fix unittest test discovery with Jython bytecode files.
+- Issue #18756: os.urandom() now uses a lazily-opened persistent file
+ descriptor, so as to avoid using many file descriptors when run in
+ parallel from multiple threads.
-- Issue #1178863: Separate initialisation from setting when initializing
- Tkinter.Variables; harmonize exceptions to ValueError; only delete variables
- that have not been deleted; assert that variable names are strings.
+- Issue #18418: After fork(), reinit all threads states, not only active ones.
+ Patch by A. Jesse Jiryu Davis.
-- Issue #14104: Implement time.monotonic() on Mac OS X, patch written by
- Nicholas Riley.
+- Issue #17974: Switch unittest from using getopt to using argparse.
-- Issue #13394: the aifc module now uses warnings.warn() to signal warnings.
+- Issue #11798: TestSuite now drops references to own tests after execution.
-- Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under
- Windows when the child process has already exited.
+- Issue #16611: http.cookie now correctly parses the 'secure' and 'httponly'
+ cookie flags.
-- Issue #14223: curses.addch() is no more limited to the range 0-255 when the
- Python curses is not linked to libncursesw. It was a regression introduced
- in Python 3.3a1.
+- Issue #11973: Fix a problem in kevent. The flags and fflags fields are now
+ properly handled as unsigned.
-- Issue #14168: Check for presence of Element._attrs in minidom before
- accessing it.
+- Issue #18807: ``pyvenv`` now takes a --copies argument allowing copies
+ instead of symlinks even where symlinks are available and the default.
-- Issue #12328: Fix multiprocessing's use of overlapped I/O on Windows.
- Also, add a multiprocessing.connection.wait(rlist, timeout=None) function
- for polling multiple objects at once. Patch by sbt.
+- Issue #18538: ``python -m dis`` now uses argparse for argument processing.
+ Patch by Michele Orrù.
-- Issue #14007: Accept incomplete TreeBuilder objects (missing start, end,
- data or close method) for the Python implementation as well.
- Drop the no-op TreeBuilder().xml() method from the C implementation.
+- Issue #18394: Close cgi.FieldStorage's optional file.
-- Issue #14210: pdb now has tab-completion not only for command names, but
- also for their arguments, wherever possible.
+- Issue #17702: On error, os.environb now suppresses the exception context
+ when raising a new KeyError with the original key.
-- Issue #14310: Sockets can now be with other processes on Windows using
- the api socket.socket.share() and socket.fromshare().
+- Issue #16809: Fixed some tkinter incompabilities with Tcl/Tk 8.6.
-- Issue #10576: The gc module now has a 'callbacks' member that will get
- called when garbage collection takes place.
+- Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj
+ argument.
-Build
------
+- Issue #18324: set_payload now correctly handles binary input. This also
+ supersedes the previous fixes for #14360, #1717, and #16564.
-- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.
+- Issue #18794: Add a fileno() method and a closed attribute to select.devpoll
+ objects.
-- Issue #14387: Do not include accu.h from Python.h.
+- Issue #17119: Fixed integer overflows when processing large strings and tuples
+ in the tkinter module.
-- Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined.
- Based on patch from Hervé Coatanhay.
+- Issue #18747: Re-seed OpenSSL's pseudo-random number generator after fork.
+ A pthread_atfork() parent handler is used to seed the PRNG with pid, time
+ and some stack data.
-- Issue #14321: Do not run pgen during the build if files are up to date.
+- Issue #8865: Concurrent invocation of select.poll.poll() now raises a
+ RuntimeError exception. Patch by Christian Schubert.
-Documentation
--------------
+- Issue #18777: The ssl module now uses the new CRYPTO_THREADID API of
+ OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function.
-- Issue #14034: added the argparse tutorial.
+- Issue #18768: Correct doc string of RAND_edg(). Patch by Vajrasky Kok.
-- Issue #14324: Fix configure tests for cross builds.
+- Issue #18178: Fix ctypes on BSD. dlmalloc.c was compiled twice which broke
+ malloc weak symbols.
-- Issue #14327: Call AC_CANONICAL_HOST in configure.ac and check in
- config.{guess,sub}. Don't use uname calls for cross builds.
+- Issue #18709: Fix CVE-2013-4238. The SSL module now handles NULL bytes
+ inside subjectAltName correctly. Formerly the module has used OpenSSL's
+ GENERAL_NAME_print() function to get the string represention of ASN.1
+ strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and
+ ``uniformResourceIdentifier`` (URI).
-Extension Modules
------------------
+- Issue #18701: Remove support of old CPython versions (<3.0) from C code.
-- Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and
- ctypes.c_float that caused an incorrect exception to be returned in the
- case of overflow has been fixed.
+- Issue #18756: Improve error reporting in os.urandom() when the failure
+ is due to something else than /dev/urandom not existing (for example,
+ exhausting the file descriptor limit).
-- Issue #14212: The re module didn't retain a reference to buffers it was
- scanning, resulting in segfaults.
+- Issue #18673: Add O_TMPFILE to os module. O_TMPFILE requires Linux kernel
+ 3.11 or newer. It's only defined on system with 3.11 uapi headers, too.
-- Issue #14259: The finditer() method of re objects did not take any
- keyword arguments, contrary to the documentation.
+- Issue #18532: Change the builtin hash algorithms' names to lower case names
+ as promised by hashlib's documentation.
-- Issue #10142: Support for SEEK_HOLE/SEEK_DATA (for example, under ZFS).
+- Issue #8713: add new spwan and forkserver start methods, and new functions
+ get_all_start_methods, get_start_method, and set_start_method, to
+ multiprocessing.
-Tests
------
+- Issue #18405: Improve the entropy of crypt.mksalt().
-- Issue #14442: Add missing errno import in test_smtplib.
+- Issue #12015: The tempfile module now uses a suffix of 8 random characters
+ instead of 6, to reduce the risk of filename collision. The entropy was
+ reduced when uppercase letters were removed from the charset used to generate
+ random characters.
-- Issue #8315: (partial fix) python -m unittest test.test_email now works.
+- Issue #18585: Add :func:`textwrap.shorten` to collapse and truncate a
+ piece of text to a given length.
+- Issue #18598: Tweak exception message for importlib.import_module() to
+ include the module name when a key argument is missing.
-What's New in Python 3.3.0 Alpha 1?
-===================================
+- Issue #19151: Fix docstring and use of _get_supported_file_loaders() to
+ reflect 2-tuples.
-*Release date: 05-Mar-2012*
+- Issue #19152: Add ExtensionFileLoader.get_filename().
-Core and Builtins
------------------
+- Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get
+ docstrings and ValueError messages. Patch by Zhongyue Luo
-- Issue #14172: Fix reference leak when marshalling a buffer-like object
- (other than a bytes object).
+- Fix refcounting issue with extension types in tkinter.
-- Issue #13521: dict.setdefault() now does only one lookup for the given key,
- making it "atomic" for many purposes. Patch by Filip Gruszczyński.
+- Issue #8112: xlmrpc.server's DocXMLRPCServer server no longer raises an error
+ if methods have annotations; it now correctly displays the annotations.
-- PEP 409, Issue #6210: "raise X from None" is now supported as a means of
- suppressing the display of the chained exception context. The chained
- context still remains available as the __context__ attribute.
+- Issue #18600: Added policy argument to email.message.Message.as_string,
+ and as_bytes and __bytes__ methods to Message.
-- Issue #10181: New memoryview implementation fixes multiple ownership
- and lifetime issues of dynamically allocated Py_buffer members (#9990)
- as well as crashes (#8305, #7433). Many new features have been added
- (See whatsnew/3.3), and the documentation has been updated extensively.
- The ndarray test object from _testbuffer.c implements all aspects of
- PEP-3118, so further development towards the complete implementation
- of the PEP can proceed in a test-driven manner.
+- Issue #18671: Output more information when logging exceptions occur.
- Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review
- and many ideas.
+- Issue #18621: Prevent the site module's patched builtins from keeping
+ too many references alive for too long.
-- Issue #12834: Fix incorrect results of memoryview.tobytes() for
- non-contiguous arrays.
+- Issue #4885: Add weakref support to mmap objects. Patch by Valerie Lambert.
-- Issue #5231: Introduce memoryview.cast() method that allows changing
- format and shape without making a copy of the underlying memory.
+- Issue #8860: Fixed rounding in timedelta constructor.
-- Issue #14084: Fix a file descriptor leak when importing a module with a
- bad encoding.
+- Issue #18849: Fixed a Windows-specific tempfile bug where collision with an
+ existing directory caused mkstemp and related APIs to fail instead of
+ retrying. Report and fix by Vlad Shcherbina.
-- Upgrade Unicode data to Unicode 6.1.
+- Issue #18920: argparse's default destination for the version action (-v,
+ --version) has also been changed to stdout, to match the Python executable.
-- Issue #14040: Remove rarely used file name suffixes for C extensions
- (under POSIX mainly).
+Tests
+-----
-- Issue #14051: Allow arbitrary attributes to be set of classmethod and
- staticmethod.
+- Issue #18623: Factor out the _SuppressCoreFiles context manager into
+ test.support. Patch by Valerie Lambert.
-- Issue #13703: oCERT-2011-003: Randomize hashes of str and bytes to protect
- against denial of service attacks due to hash collisions within the dict and
- set types. Patch by David Malcolm, based on work by Victor Stinner.
+- Issue #12037: Fix test_email for desktop Windows.
-- Issue #13020: Fix a reference leak when allocating a structsequence object
- fails. Patch by Suman Saha.
+- Issue #15507: test_subprocess's test_send_signal could fail if the test
+ runner were run in an environment where the process inherited an ignore
+ setting for SIGINT. Restore the SIGINT handler to the desired
+ KeyboardInterrupt raising one during that test.
-- Issue #13908: Ready types returned from PyType_FromSpec.
+- Issue #16799: Switched from getopt to argparse style in regrtest's argument
+ parsing. Added more tests for regrtest's argument parsing.
-- Issue #11235: Fix OverflowError when trying to import a source file whose
- modification time doesn't fit in a 32-bit timestamp.
+- Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as
+ possible, since "localhost" goes through a DNS lookup under recent Windows
+ versions.
-- Issue #12705: A SyntaxError exception is now raised when attempting to
- compile multiple statements as a single interactive statement.
+IDLE
+----
-- Fix the builtin module initialization code to store the init function for
- future reinitialization.
+- Issue #18489: Add tests for SearchEngine. Original patch by Phil Webster.
-- Issue #8052: The posix subprocess module would take a long time closing
- all possible file descriptors in the child process rather than just open
- file descriptors. It now closes only the open fds if possible for the
- default close_fds=True behavior.
+Documentation
+-------------
-- Issue #13629: Renumber the tokens in token.h so that they match the indexes
- into _PyParser_TokenNames.
+- Issue #18743: Fix references to non-existant "StringIO" module.
-- Issue #13752: Add a casefold() method to str.
+- Issue #18783: Removed existing mentions of Python long type in docstrings,
+ error messages and comments.
-- Issue #13761: Add a "flush" keyword argument to the print() function,
- used to ensure flushing the output stream.
+Build
+-----
-- Issue #13645: pyc files now contain the size of the corresponding source
- code, to avoid timestamp collisions (especially on filesystems with a low
- timestamp resolution) when checking for freshness of the bytecode.
+- Issue #1584: Provide configure options to override default search paths for
+ Tcl and Tk when building _tkinter.
-- PEP 380, Issue #11682: Add "yield from <x>" to support easy delegation to
- subgenerators (initial patch by Greg Ewing, integration into 3.3 by
- Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan)
+- Issue #15663: Tcl/Tk 8.5.14 is now included with the OS X 10.6+ 64-/32-bit
+ installer. It is no longer necessary to install a third-party version of
+ Tcl/Tk 8.5 to work around the problems in the Apple-supplied Tcl/Tk 8.5
+ shipped in OS X 10.6 and later releases.
-- Issue #13748: Raw bytes literals can now be written with the ``rb`` prefix
- as well as ``br``.
+Tools/Demos
+-----------
-- Issue #12736: Use full unicode case mappings for upper, lower, and title case.
+- Issue #18922: Now The Lib/smtpd.py and Tools/i18n/msgfmt.py scripts write
+ their version strings to stdout, and not to sderr.
-- Issue #12760: Add a create mode to open(). Patch by David Townshend.
+
-- Issue #13738: Simplify implementation of bytes.lower() and bytes.upper().
+What's New in Python 3.4.0 Alpha 1?
+===================================
-- Issue #13577: Built-in methods and functions now have a __qualname__.
- Patch by sbt.
+Release date: 2013-08-03
-- Issue #6695: Full garbage collection runs now clear the freelist of set
- objects. Initial patch by Matthias Troffaes.
+Core and Builtins
+-----------------
-- Fix OSError.__init__ and OSError.__new__ so that each of them can be
- overriden and take additional arguments (followup to issue #12555).
+- Issue #16741: Fix an error reporting in int().
-- Fix the fix for issue #12149: it was incorrect, although it had the side
- effect of appearing to resolve the issue. Thanks to Mark Shannon for
- noticing.
+- Issue #17899: Fix rare file descriptor leak in os.listdir().
-- Issue #13505: Pickle bytes objects in a way that is compatible with
- Python 2 when using protocols <= 2.
+- Issue #10241: Clear extension module dict copies at interpreter shutdown.
+ Patch by Neil Schemenauer, minimally modified.
-- Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER. (Fix
- given by Campbell Barton).
+- Issue #9035: ismount now recognises volumes mounted below a drive root
+ on Windows. Original patch by Atsuo Ishimoto.
-- Issue #13503: Use a more efficient reduction format for bytearrays with
- pickle protocol >= 3. The old reduction format is kept with older protocols
- in order to allow unpickling under Python 2. Patch by Irmen de Jong.
+- Issue #18214: Improve finalization of Python modules to avoid setting
+ their globals to None, in most cases.
-- Issue #7111: Python can now be run without a stdin, stdout or stderr
- stream. It was already the case with Python 2. However, the corresponding
- sys module entries are now set to None (instead of an unusable file object).
+- Issue #18112: PEP 442 implementation (safe object finalization).
-- Issue #11849: Ensure that free()d memory arenas are really released
- on POSIX systems supporting anonymous memory mappings. Patch by
- Charles-François Natali.
+- Issue #18552: Check return value of PyArena_AddPyObject() in
+ obj2ast_object().
-- PEP 3155 / issue #13448: Qualified name for classes and functions.
+- Issue #18560: Fix potential NULL pointer dereference in sum().
-- Issue #13436: Fix a bogus error message when an AST object was passed
- an invalid integer value.
+- Issue #18520: Add a new PyStructSequence_InitType2() function, same than
+ PyStructSequence_InitType() except that it has a return value (0 on success,
+ -1 on error).
-- Issue #13411: memoryview objects are now hashable when the underlying
- object is hashable.
+- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0],
+ prefix and exec_prefix if the operation system does not obey MAXPATHLEN.
-- Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER
- to allow compiling extension modules with -Wswitch-enum on gcc.
- Initial patch by Floris Bruynooghe.
+- Issue #18408: Fix many various bugs in code handling errors, especially
+ on memory allocation failure (MemoryError).
-- Issue #10227: Add an allocation cache for a single slice object. Patch by
- Stefan Behnel.
+- Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all().
-- Issue #13393: BufferedReader.read1() now asks the full requested size to
- the raw stream instead of limiting itself to the buffer size.
+- Issue #18342: Use the repr of a module name when an import fails when using
+ ``from ... import ...``.
-- Issue #13392: Writing a pyc file should now be atomic under Windows as well.
+- Issue #17872: Fix a segfault in marshal.load() when input stream returns
+ more bytes than requested.
-- Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder
- already accepts them).
+- Issue #18338: `python --version` now prints version string to stdout, and
+ not to stderr. Patch by Berker Peksag and Michael Dickens.
-- Issue #13389: Full garbage collection passes now clear the freelists for
- list and dict objects. They already cleared other freelists in the
- interpreter.
+- Issue #18426: Fix NULL pointer dereference in C extension import when
+ PyModule_GetDef() returns an error.
-- Issue #13327: Remove the need for an explicit None as the second argument
- to os.utime, os.lutimes, os.futimes, os.futimens, os.futimesat, in
- order to update to the current time. Also added keyword argument
- handling to os.utimensat in order to remove the need for explicit None.
+- Issue #17206: On Windows, increase the stack size from 2 MB to 4.2 MB to fix
+ a stack overflow in the marshal module (fix a crash in test_marshal).
+ Patch written by Jeremy Kloth.
-- Issue #13350: Simplify some C code by replacing most usages of
- PyUnicode_Format by PyUnicode_FromFormat.
+- Issue #3329: Implement the PEP 445: Add new APIs to customize Python memory
+ allocators.
-- Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode
- error handler in interactive mode (when calling into PyOS_Readline()).
+- Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the
+ tstate is first removed from TLS and then deallocated.
-- Issue #9896: Add start, stop, and step attributes to range objects.
+- Issue #13483: Use VirtualAlloc in obmalloc on Windows.
-- Issue #13343: Fix a SystemError when a lambda expression uses a global
- variable in the default value of a keyword-only argument: ``lambda *,
- arg=GLOBAL_NAME: None``
+- Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise
+ OverflowError when an argument of %c format is out of range.
-- Issue #12797: Added custom opener parameter to builtin open() and
- FileIO.open().
+- Issue #18111: The min() and max() functions now support a default argument
+ to be returned instead of raising a ValueError on an empty sequence.
+ (Contributed by Julian Berman.)
-- Issue #10519: Avoid unnecessary recursive function calls in
- setobject.c.
+- Issue #18137: Detect integer overflow on precision in float.__format__()
+ and complex.__format__().
-- Issue #10363: Deallocate global locks in Py_Finalize().
+- Issue #18183: Fix various unicode operations on strings with large unicode
+ codepoints.
-- Issue #13018: Fix reference leaks in error paths in dictobject.c.
- Patch by Suman Saha.
+- Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows().
-- Issue #13201: Define '==' and '!=' to compare range objects based on
- the sequence of values they define (instead of comparing based on
- object identity).
+- Issue #18038: SyntaxError raised during compilation sources with illegal
+ encoding now always contains an encoding name.
-- Issue #1294232: In a few cases involving metaclass inheritance, the
- interpreter would sometimes invoke the wrong metaclass when building a new
- class object. These cases now behave correctly. Patch by Daniel Urban.
+- Issue #17931: Resolve confusion on Windows between pids and process
+ handles.
-- Issue #12753: Add support for Unicode name aliases and named sequences.
- Both ``unicodedata.lookup()`` and '\N{...}' now resolve aliases,
- and ``unicodedata.lookup()`` resolves named sequences too.
+- Tweak the exception message when the magic number or size value in a bytecode
+ file is truncated.
-- Issue #12170: The count(), find(), rfind(), index() and rindex() methods
- of bytes and bytearray objects now accept an integer between 0 and 255
- as their first argument. Patch by Petri Lehtinen.
+- Issue #17932: Fix an integer overflow issue on Windows 64-bit in iterators:
+ change the C type of seqiterobject.it_index from long to Py_ssize_t.
-- Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler
- warnings. Patch by Josh Triplett and Petri Lehtinen.
+- Issue #18065: Don't set __path__ to the package name for frozen packages.
-- Issue #12281: Rewrite the MBCS codec to handle correctly replace and ignore
- error handlers on all Windows versions. The MBCS codec is now supporting all
- error handlers, instead of only replace to encode and ignore to decode.
+- Issue #18088: When reloading a module, unconditionally reset all relevant
+ attributes on the module (e.g. __name__, __loader__, __package__, __file__,
+ __cached__).
-- Issue #13188: When called without an explicit traceback argument,
- generator.throw() now gets the traceback from the passed exception's
- ``__traceback__`` attribute. Patch by Petri Lehtinen.
+- Issue #17937: Try harder to collect cyclic garbage at shutdown.
-- Issue #13146: Writing a pyc file is now atomic under POSIX.
+- Issue #12370: Prevent class bodies from interfering with the __class__
+ closure.
-- Issue #7833: Extension modules built using distutils on Windows will no
- longer include a "manifest" to prevent them failing at import time in some
- embedded situations.
+- Issue #17644: Fix a crash in str.format when curly braces are used in square
+ brackets.
-- PEP 3151 / issue #12555: reworking the OS and IO exception hierarchy.
+- Issue #17237: Fix crash in the ASCII decoder on m68k.
-- Add internal API for static strings (_Py_identifier et al.).
+- Issue #17927: Frame objects kept arguments alive if they had been
+ copied into a cell, even if the cell was cleared.
-- Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described
- as "The pipe is being closed") is now mapped to POSIX errno EPIPE
- (previously EINVAL).
+- Issue #1545463: At shutdown, defer finalization of codec modules so
+ that stderr remains usable.
-- Issue #12911: Fix memory consumption when calculating the repr() of huge
- tuples or lists.
+- Issue #7330: Implement width and precision (ex: "%5.3s") for the format
+ string of PyUnicode_FromFormat() function, original patch written by Ysj Ray.
-- PEP 393: flexible string representation. Thanks to Torsten Becker for the
- initial implementation, and Victor Stinner for various bug fixes.
+- Issue #1545463: Global variables caught in reference cycles are now
+ garbage-collected at shutdown.
-- Issue #14081: The 'sep' and 'maxsplit' parameter to str.split, bytes.split,
- and bytearray.split may now be passed as keyword arguments.
+- Issue #17094: Clear stale thread states after fork(). Note that this
+ is a potentially disruptive change since it may release some system
+ resources which would otherwise remain perpetually alive (e.g. database
+ connections kept in thread-local storage).
-- Issue #13012: The 'keepends' parameter to str.splitlines may now be passed
- as a keyword argument: "my_string.splitlines(keepends=True)". The same
- change also applies to bytes.splitlines and bytearray.splitlines.
+- Issue #17408: Avoid using an obsolete instance of the copyreg module when
+ the interpreter is shutdown and then started again.
-- Issue #7732: Don't open a directory as a file anymore while importing a
- module. Ignore the direcotry if its name matchs the module name (e.g.
- "__init__.py") and raise a ImportError instead.
+- Issue #5845: Enable tab-completion in the interactive interpreter by
+ default, thanks to a new sys.__interactivehook__.
-- Issue #13021: Missing decref on an error path. Thanks to Suman Saha for
- finding the bug and providing a patch.
+- Issue #17115,17116: Module initialization now includes setting __package__ and
+ __loader__ attributes to None.
-- Issue #12973: Fix overflow checks that relied on undefined behaviour in
- list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These bugs
- caused test failures with recent versions of Clang.
+- Issue #17853: Ensure locals of a class that shadow free variables always win
+ over the closures.
-- Issue #12904: os.utime, os.futimes, os.lutimes, and os.futimesat now write
- atime and mtime with nanosecond precision on modern POSIX platforms.
+- Issue #17863: In the interactive console, don't loop forever if the encoding
+ can't be fetched from stdin.
-- Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now
- mapped to POSIX errno ENOTDIR (previously EINVAL).
+- Issue #17867: Raise an ImportError if __import__ is not found in __builtins__.
-- Issue #9200: The str.is* methods now work with strings that contain non-BMP
- characters even in narrow Unicode builds.
+- Issue #18698: Ensure importlib.reload() returns the module out of sys.modules.
-- Issue #12791: Break reference cycles early when a generator exits with
- an exception.
+- Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3,
+ such as was shipped with Centos 5 and Mac OS X 10.4.
-- Issue #12773: Make __doc__ mutable on user-defined classes.
+- Issue #17413: sys.settrace callbacks were being passed a string instead of an
+ exception instance for the 'value' element of the arg tuple if the exception
+ originated from C code; now an exception instance is always provided.
-- Issue #12766: Raise a ValueError when creating a class with a class variable
- that conflicts with a name in __slots__.
+- Issue #17782: Fix undefined behaviour on platforms where
+ ``struct timespec``'s "tv_nsec" member is not a C long.
-- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase
- titlecased and cased non-letter characters.
+- Issue #17722: When looking up __round__, resolve descriptors.
-- Issue #12732: In narrow unicode builds, allow Unicode identifiers which fall
- outside the BMP.
+- Issue #16061: Speed up str.replace() for replacing 1-character strings.
-- Issue #12575: Validate user-generated AST before it is compiled.
+- Issue #17715: Fix segmentation fault from raising an exception in a __trunc__
+ method.
-- Make type(None), type(Ellipsis), and type(NotImplemented) callable. They
- return the respective singleton instances.
+- Issue #17643: Add __callback__ attribute to weakref.ref.
-- Forbid summing bytes with sum().
+- Issue #16447: Fixed potential segmentation fault when setting __name__ on a
+ class.
-- Verify the types of AST strings and identifiers provided by the user before
- compiling them.
+- Issue #17669: Fix crash involving finalization of generators using yield from.
-- Issue #12647: The None object now has a __bool__() method that returns False.
- Formerly, bool(None) returned False only because of special case logic
- in PyObject_IsTrue().
+- Issue #14439: Python now prints the traceback on runpy failure at startup.
-- Issue #12579: str.format_map() now raises a ValueError if used on a
- format string that contains positional fields. Initial patch by
- Julian Berman.
+- Issue #17469: Fix _Py_GetAllocatedBlocks() and sys.getallocatedblocks()
+ when running on valgrind.
-- Issue #10271: Allow warnings.showwarning() be any callable.
+- Issue #17619: Make input() check for Ctrl-C correctly on Windows.
-- Issue #11627: Fix segfault when __new__ on a exception returns a
- non-exception class.
+- Issue #17357: Add missing verbosity messages for -v/-vv that were lost during
+ the importlib transition.
-- Issue #12149: Update the method cache after a type's dictionary gets
- cleared by the garbage collector. This fixes a segfault when an instance
- and its type get caught in a reference cycle, and the instance's
- deallocator calls one of the methods on the type (e.g. when subclassing
- IOBase). Diagnosis and patch by Davide Rizzo.
+- Issue #17610: Don't rely on non-standard behavior of the C qsort() function.
-- Issue #9611, Issue #9015: FileIO.read() clamps the length to INT_MAX on Windows.
+- Issue #17323: The "[X refs, Y blocks]" printed by debug builds has been
+ disabled by default. It can be re-enabled with the `-X showrefcount` option.
-- Issue #9642: Uniformize the tests on the availability of the mbcs codec, add
- a new HAVE_MBCS define.
+- Issue #17328: Fix possible refleak in dict.setdefault.
-- Issue #9642: Fix filesystem encoding initialization: use the ANSI code page
- on Windows if the mbcs codec is not available, and fail with a fatal error if
- we cannot get the locale encoding (if nl_langinfo(CODESET) is not available)
- instead of using UTF-8.
+- Issue #17275: Corrected class name in init error messages of the C version of
+ BufferedWriter and BufferedRandom.
-- When a generator yields, do not retain the caller's exception state on the
- generator.
+- Issue #7963: Fixed misleading error message that issued when object is
+ called without arguments.
-- Issue #12475: Prevent generators from leaking their exception state into the
- caller's frame as they return for the last time.
+- Issue #8745: Small speed up zipimport on Windows. Patch by Catalin Iacob.
-- Issue #12291: You can now load multiple marshalled objects from a stream,
- with other data interleaved between marshalled objects.
+- Issue #5308: Raise ValueError when marshalling too large object (a sequence
+ with size >= 2**31), instead of producing illegal marshal data.
-- Issue #12356: When required positional or keyword-only arguments are not
- given, produce a informative error message which includes the name(s) of the
- missing arguments.
+- Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError
+ and a full traceback including line number.
-- Issue #12370: Fix super with no arguments when __class__ is overriden in the
- class body.
+- Issue #16967: In function definition, evaluate positional defaults before
+ keyword-only defaults.
-- Issue #12084: os.stat on Windows now works properly with relative symbolic
- links when called from any directory.
+- Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.)
+ in the interpreter.
-- Loosen type restrictions on the __dir__ method. __dir__ can now return any
- sequence, which will be converted to a list and sorted by dir().
+- Issue #17137: When an Unicode string is resized, the internal wide character
+ string (wstr) format is now cleared.
-- Issue #12265: Make error messages produced by passing an invalid set of
- arguments to a function more informative.
+- Issue #17043: The unicode-internal decoder no longer read past the end of
+ input buffer.
-- Issue #12225: Still allow Python to build if Python is not in its hg repo or
- mercurial is not installed.
+- Issue #17098: All modules now have __loader__ set even if they pre-exist the
+ bootstrapping of importlib.
-- Issue #1195: my_fgets() now always clears errors before calling fgets(). Fix
- the following case: sys.stdin.read() stopped with CTRL+d (end of file),
- raw_input() interrupted by CTRL+c.
+- Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder.
-- Issue #12216: Allow unexpected EOF errors to happen on any line of the file.
+- Issue #16772: The base argument to the int constructor no longer accepts
+ floats, or other non-integer objects with an __int__ method. Objects
+ with an __index__ method are now accepted.
-- Issue #12199: The TryExcept and TryFinally and AST nodes have been unified
- into a Try node.
+- Issue #10156: In the interpreter's initialization phase, unicode globals
+ are now initialized dynamically as needed.
-- Issue #9670: Increase the default stack size for secondary threads on
- Mac OS X and FreeBSD to reduce the chances of a crash instead of a
- "maximum recursion depth" RuntimeError exception.
- (patch by Ronald Oussoren)
+- Issue #16980: Fix processing of escaped non-ascii bytes in the
+ unicode-escape-decode decoder.
-- Issue #12106: The use of the multiple-with shorthand syntax is now reflected
- in the AST.
+- Issue #16975: Fix error handling bug in the escape-decode bytes decoder.
-- Issue #12190: Try to use the same filename object when compiling unmarshalling
- a code objects in the same file.
+- Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping"
+ in any mapping, not only in a string.
-- Issue #12166: Move implementations of dir() specialized for various types into
- the __dir__() methods of those types.
+- Issue #16613: Add *m* argument to ``collections.Chainmap.new_child`` to
+ allow the new child map to be specified explicitly.
-- Issue #5715: In socketserver, close the server socket in the child process.
+- Issue #16730: importlib.machinery.FileFinder now no longers raises an
+ exception when trying to populate its cache and it finds out the directory is
+ unreadable or has turned into a file. Reported and diagnosed by
+ David Pritchard.
-- Correct lookup of __dir__ on objects. Among other things, this causes errors
- besides AttributeError found on lookup to be propagated.
+- Issue #16906: Fix a logic error that prevented most static strings from being
+ cleared.
-- Issue #12060: Use sig_atomic_t type and volatile keyword in the signal
- module. Patch written by Charles-François Natali.
+- Issue #11461: Fix the incremental UTF-16 decoder. Original patch by
+ Amaury Forgeot d'Arc.
-- Issue #1746656: Added the if_nameindex, if_indextoname, if_nametoindex
- methods to the socket module.
+- Issue #16856: Fix a segmentation fault from calling repr() on a dict with
+ a key whose repr raise an exception.
-- Issue #12044: Fixed subprocess.Popen when used as a context manager to
- wait for the process to end when exiting the context to avoid unintentionally
- leaving zombie processes around.
+- Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB.
-- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
- clear the end-of-file indicator after CTRL+d.
+- Issue #16761: Calling int() with base argument only now raises TypeError.
-- Issue #1856: Avoid crashes and lockups when daemon threads run while the
- interpreter is shutting down; instead, these threads are now killed when
- they try to take the GIL.
+- Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py
+ when retrieving a REG_DWORD value. This corrects functions like
+ winreg.QueryValueEx that may have been returning truncated values.
-- Issue #9756: When calling a method descriptor or a slot wrapper descriptor,
- the check of the object type doesn't read the __class__ attribute anymore.
- Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
- str type). Patch written by Andreas Stührk.
+- Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg
+ when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.
-- Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_*
- APIs, to avoid a crash with the pthread implementation in RHEL 5. Patch
- by Charles-François Natali.
+- Issue #11939: Set the st_dev attribute of stat_result to allow Windows to
+ take advantage of the os.path.samefile/sameopenfile/samestat implementations
+ used by other platforms.
-- Issue #10914: Initialize correctly the filesystem codec when creating a new
- subinterpreter to fix a bootstrap issue with codecs implemented in Python, as
- the ISO-8859-15 codec.
+- Issue #16772: The int() constructor's second argument (base) no longer
+ accepts non integer values. Consistent with the behavior in Python 2.
-- Issue #11918: OS/2 and VMS are no more supported because of the lack of
- maintainer.
+- Issue #14470: Remove w9xpopen support per PEP 11.
-- Issue #6780: fix starts/endswith error message to mention that tuples are
- accepted too.
+- Issue #9856: Replace deprecation warning with raising TypeError
+ in object.__format__. Patch by Florent Xicluna.
-- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files
- between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP
- chars (e.g. "\U00012345"[0]).
+- Issue #16597: In buffered and text IO, call close() on the underlying stream
+ if invoking flush() fails.
-- Issue #11845: Fix typo in rangeobject.c that caused a crash in
- compute_slice_indices. Patch by Daniel Urban.
+- Issue #16722: In the bytes() constructor, try to call __bytes__ on the
+ argument before __index__.
-- Issue #5673: Added a `timeout` keyword argument to subprocess.Popen.wait,
- subprocess.Popen.communicated, subprocess.call, subprocess.check_call, and
- subprocess.check_output. If the blocking operation takes more than `timeout`
- seconds, the `subprocess.TimeoutExpired` exception is raised.
+- Issue #16421: loading multiple modules from one shared object is now
+ handled correctly (previously, the first module loaded from that file
+ was silently returned). Patch by Václav Šmilauer.
-- Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted
- (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
- written by Charles-Francois Natali.
+- Issue #16602: When a weakref's target was part of a long deallocation
+ chain, the object could remain reachable through its weakref even though
+ its refcount had dropped to zero.
-- Issue #9319: Include the filename in "Non-UTF8 code ..." syntax error.
+- Issue #16495: Remove extraneous NULL encoding check from bytes_decode().
-- Issue #10785: Store the filename as Unicode in the Python parser.
+- Issue #16619: Create NameConstant AST class to represent None, True, and False
+ literals. As a result, these constants are never loaded at runtime from
+ builtins.
-- Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes
- on Windows.
+- Issue #16455: On FreeBSD and Solaris, if the locale is C, the
+ ASCII/surrogateescape codec is now used (instead of the locale encoding) to
+ decode the command line arguments. This change fixes inconsistencies with
+ os.fsencode() and os.fsdecode(), because these operating systems announce an
+ ASCII locale encoding, but actually use the ISO-8859-1 encoding in practice.
-- Issue #10998: Remove mentions of -Q, sys.flags.division_warning and
- Py_DivisionWarningFlag left over from Python 2.
+- Issue #16562: Optimize dict equality testing. Patch by Serhiy Storchaka.
-- Issue #11244: Remove an unnecessary peepholer check that was preventing
- negative zeros from being constant-folded properly.
+- Issue #16588: Silence unused-but-set warnings in Python/thread_pthread
-- Issue #11395: io.FileIO().write() clamps the data length to 32,767 bytes on
- Windows if the file is a TTY to workaround a Windows bug. The Windows console
- returns an error (12: not enough space error) on writing into stdout if
- stdout mode is binary and the length is greater than 66,000 bytes (or less,
- depending on heap usage).
+- Issue #16592: stringlib_bytes_join doesn't raise MemoryError on allocation
+ failure.
-- Issue #11320: fix bogus memory management in Modules/getpath.c, leading to
- a possible crash when calling Py_SetPath().
+- Issue #16546: Fix: ast.YieldFrom argument is now mandatory.
-- Issue #11432: A bug was introduced in subprocess.Popen on posix systems with
- 3.2.0 where the stdout or stderr file descriptor being the same as the stdin
- file descriptor would raise an exception. webbrowser.open would fail. fixed.
+- Issue #16514: Fix regression causing a traceback when sys.path[0] is None
+ (actually, any non-string or non-bytes type).
-- Issue #9856: Change object.__format__ with a non-empty format string
- to be a DeprecationWarning. In 3.2 it was a PendingDeprecationWarning.
- In 3.4 it will be a TypeError.
+- Issue #16306: Fix multiple error messages when unknown command line
+ parameters where passed to the interpreter. Patch by Hieu Nguyen.
-- Issue #11244: The peephole optimizer is now able to constant-fold
- arbitrarily complex expressions. This also fixes a 3.2 regression where
- operations involving negative numbers were not constant-folded.
+- Issue #16215: Fix potential double memory free in str.replace(). Patch
+ by Serhiy Storchaka.
-- Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when
- there are many tags (e.g. when using mq). Patch by Nadeem Vawda.
+- Issue #16290: A float return value from the __complex__ special method is no
+ longer accepted in the complex() constructor.
-- Issue #11335: Fixed a memory leak in list.sort when the key function
- throws an exception.
+- Issue #16416: On Mac OS X, operating system data are now always
+ encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding
+ (which may be ASCII if no locale environment variable is set), to avoid
+ inconsistencies with os.fsencode() and os.fsdecode() functions which are
+ already using UTF-8/surrogateescape.
-- Issue #8923: When a string is encoded to UTF-8 in strict mode, the result is
- cached into the object. Examples: str.encode(), str.encode('utf-8'),
- PyUnicode_AsUTF8String() and PyUnicode_AsEncodedString(unicode, "utf-8",
- NULL).
+- Issue #16453: Fix equality testing of dead weakref objects.
-- Issue #10829: Refactor PyUnicode_FromFormat(), use the same function to parse
- the format string in the 3 steps, fix crashs on invalid format strings.
+- Issue #9535: Fix pending signals that have been received but not yet
+ handled by Python to not persist after os.fork() in the child process.
-- Issue #13007: whichdb should recognize gdbm 1.9 magic numbers.
+- Issue #14794: Fix slice.indices to return correct results for huge values,
+ rather than raising OverflowError.
-- Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with
- a buffer struct having a NULL data pointer.
+- Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor
+ Stinner.
-- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and
- sys.stdin uses universal newline (replace '\r\n' by '\n').
+- Issue #8271: the utf-8 decoder now outputs the correct number of U+FFFD
+ characters when used with the 'replace' error handler on invalid utf-8
+ sequences. Patch by Serhiy Storchaka, tests by Ezio Melotti.
-- Issue #11828: startswith and endswith now accept None as slice index.
- Patch by Torsten Becker.
+- Issue #5765: Apply a hard recursion limit in the compiler instead of
+ blowing the stack and segfaulting. Initial patch by Andrea Griffini.
-- Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx().
- It encoded the Unicode filename to UTF-8, but the encoding fails on
- undecodable filename (on surrogate characters) which raises an unexpected
- UnicodeEncodeError on recursion limit.
+- Issue #16402: When slicing a range, fix shadowing of exceptions from
+ __index__.
-- Issue #11187: Remove bootstrap code (use ASCII) of
- PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the
- locale encoding) in PyUnicode_EncodeFSDefault().
+- Issue #16336: fix input checking in the surrogatepass error handler.
+ Patch by Serhiy Storchaka.
-- Check for NULL result in PyType_FromSpec.
+- Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now
+ raises an error.
-- Issue #10516: New copy() and clear() methods for lists and bytearrays.
+- Issue #7317: Display full tracebacks when an error occurs asynchronously.
+ Patch by Alon Horev with update by Alexey Kachayev.
-- Issue #11386: bytearray.pop() now throws IndexError when the bytearray is
- empty, instead of OverflowError.
+- Issue #16309: Make PYTHONPATH="" behavior the same as if PYTHONPATH
+ not set at all.
-- Issue #12380: The rjust, ljust and center methods of bytes and bytearray
- now accept a bytearray argument.
+- Issue #10189: Improve the error reporting of SyntaxErrors related to global
+ and nonlocal statements.
-Library
--------
+- Fix segfaults on setting __qualname__ on builtin types and attempting to
+ delete it on any type.
-- Issue #14195: An issue that caused weakref.WeakSet instances to incorrectly
- return True for a WeakSet instance 'a' in both 'a < a' and 'a > a' has been
- fixed.
+- Issue #14625: Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch
+ written by Serhiy Storchaka.
-- Issue #14166: Pickler objects now have an optional ``dispatch_table``
- attribute which allows to set custom per-pickler reduction functions.
- Patch by sbt.
+- Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass
+ received a nonempty dict from the constructor.
-- Issue #14177: marshal.loads() now raises TypeError when given an unicode
- string. Patch by Guilherme Gonçalves.
+- Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a
+ class's __dict__ and on type.
-- Issue #13550: Remove the debug machinery from the threading module: remove
- verbose arguments from all threading classes and functions.
+- Issue #12805: Make bytes.join and bytearray.join faster when the separator
+ is empty. Patch by Serhiy Storchaka.
-- Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary,
- WeakValueDictionary) to return a better approximation when some objects
- are dead or dying. Moreover, the implementation is now O(1) rather than
- O(n).
+- Issue #6074: Ensure cached bytecode files can always be updated by the
+ user that created them, even when the source file is read-only.
-- Issue #11841: Fix comparison bug with 'rc' versions in packaging.version.
- Patch by Filip Gruszczyński.
+- Issue #15958: bytes.join and bytearray.join now accept arbitrary buffer
+ objects.
-- Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils
- on Windows. Also fixed in packaging.
+- Issue #14783: Improve int() docstring and switch docstrings for str(),
+ range(), and slice() to use multi-line signatures.
-- Issue #8033: sqlite3: Fix 64-bit integer handling in user functions
- on 32-bit architectures. Initial patch by Philippe Devalkeneer.
+- Issue #16160: Subclass support now works for types.SimpleNamespace.
-- HTMLParser is now able to handle slashes in the start tag.
+- Issue #16148: Implement PEP 424, adding operator.length_hint and
+ PyObject_LengthHint.
-- Issue #13641: Decoding functions in the base64 module now accept ASCII-only
- unicode strings. Patch by Catalin Iacob.
+- Upgrade Unicode data (UCD) to version 6.2.
-- Issue #14043: Speed up importlib's _FileFinder by at least 8x, and add a
- new importlib.invalidate_caches() function.
+- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
+ decoder (already working as unicode strings). Patch by Serhiy Storchaka.
-- Issue #14001: CVE-2012-0845: xmlrpc: Fix an endless loop in
- SimpleXMLRPCServer upon malformed POST request.
+- Issue #15144: Fix possible integer overflow when handling pointers as integer
+ values, by using `Py_uintptr_t` instead of `size_t`. Patch by Serhiy
+ Storchaka.
-- Issue #13961: Move importlib over to using os.replace() for atomic renaming.
+- Issue #15965: Explicitly cast `AT_FDCWD` as (int). Required on Solaris 10
+ (which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms.
-- Do away with ambiguous level values (as suggested by PEP 328) in
- importlib.__import__() by raising ValueError when level < 0.
+- Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors.
-- Issue #2489: pty.spawn could consume 100% cpu when it encountered an EOF.
+- Issue #15448: Buffered IO now frees the buffer when closed, instead
+ of when deallocating.
-- Issue #13014: Fix a possible reference leak in SSLSocket.getpeercert().
+- Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
+ exception handler on code with syntax errors.
-- Issue #13777: Add PF_SYSTEM sockets on OS X.
- Patch by Michael Goderbauer.
+- Issue #15897: zipimport.c doesn't check return value of fseek().
+ Patch by Felipe Cruz.
-- Issue #13015: Fix a possible reference leak in defaultdict.__repr__.
- Patch by Suman Saha.
+- Issue #15801: Make sure mappings passed to '%' formatting are actually
+ subscriptable.
-- Issue #1326113: distutils' and packaging's build_ext commands option now
- correctly parses multiple values (separated by whitespace or commas) given
- to their --libraries option.
+- Issue #15111: __import__ should propagate ImportError when raised as a
+ side-effect of a module triggered from using fromlist.
-- Issue #10287: nntplib now queries the server's CAPABILITIES first before
- sending MODE READER, and only sends it if not already in READER mode.
- Patch by Hynek Schlawack.
+- Issue #15022: Add pickle and comparison support to types.SimpleNamespace.
-- Issue #13993: HTMLParser is now able to handle broken end tags when
- strict=False.
+Library
+-------
-- Issue #13930: lib2to3 now supports writing converted output files to another
- directory tree as well as copying unchanged files and altering the file
- suffix.
+- Issue #4331: Added functools.partialmethod (Initial patch by Alon Horev)
-- Issue #9750: Fix sqlite3.Connection.iterdump on tables and fields
- with a name that is a keyword or contains quotes. Patch by Marko
- Kohtala.
+- Issue #13461: Fix a crash in the TextIOWrapper.tell method on 64-bit
+ platforms. Patch by Yogesh Chaudhari.
-- Issue #10287: nntplib now queries the server's CAPABILITIES again after
- authenticating (since the result may change, according to RFC 4643).
- Patch by Hynek Schlawack.
+- Issue #18681: Fix a NameError in importlib.reload() (noticed by Weizhao Li).
-- Issue #13590: On OS X 10.7 and 10.6 with Xcode 4.2, building
- Distutils-based packages with C extension modules may fail because
- Apple has removed gcc-4.2, the version used to build python.org
- 64-bit/32-bit Pythons. If the user does not explicitly override
- the default C compiler by setting the CC environment variable,
- Distutils will now attempt to compile extension modules with clang
- if gcc-4.2 is required but not found. Also as a convenience, if
- the user does explicitly set CC, substitute its value as the default
- compiler in the Distutils LDSHARED configuration variable for OS X.
- (Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u
- SDK, neither of which are available in Xcode 4. This change does not
- attempt to override settings to support their use with Xcode 4.)
+- Issue #14323: Expanded the number of digits in the coefficients for the
+ RGB -- YIQ conversions so that they match the FCC NTSC versions.
-- Issue #13960: HTMLParser is now able to handle broken comments when
- strict=False.
+- Issue #17998: Fix an internal error in regular expression engine.
-- When '' is a path (e.g. in sys.path), make sure __file__ uses the current
- working directory instead of '' in importlib.
+- Issue #17557: Fix os.getgroups() to work with the modified behavior of
+ getgroups(2) on OS X 10.8. Original patch by Mateusz Lenik.
-- Issue #13609: Add two functions to query the terminal size:
- os.get_terminal_size (low level) and shutil.get_terminal_size (high level).
- Patch by Zbigniew Jędrzejewski-Szmek.
+- Issue #18608: Avoid keeping a strong reference to the locale module
+ inside the _io module.
-- Issue #13845: On Windows, time.time() now uses GetSystemTimeAsFileTime()
- instead of ftime() to have a resolution of 100 ns instead of 1 ms (the clock
- accuracy is between 0.5 ms and 15 ms).
+- Issue #18619: Fix atexit leaking callbacks registered from sub-interpreters,
+ and make it GC-aware.
-- Issue #13846: Add time.monotonic(), monotonic clock.
+- Issue #15699: The readline module now uses PEP 3121-style module
+ initialization, so as to reclaim allocated resources (Python callbacks)
+ at shutdown. Original patch by Robin Schreiber.
-- Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on
- Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to
- make sure two listeners can't bind to the same socket/pipe (or any existing
- socket/pipe).
+- Issue #17616: wave.open now supports the context management protocol.
-- Issue #10811: Fix recursive usage of cursors. Instead of crashing,
- raise a ProgrammingError now.
+- Issue #18599: Fix name attribute of _sha1.sha1() object. It now returns
+ 'SHA1' instead of 'SHA'.
-- Issue #13734: Add os.fwalk(), a directory walking function yielding file
- descriptors.
+- Issue #13266: Added inspect.unwrap to easily unravel __wrapped__ chains
+ (initial patch by Daniel Urban and Aaron Iles)
-- Issue #2945: Make the distutils upload command aware of bdist_rpm products.
+- Issue #18561: Skip name in ctypes' _build_callargs() if name is NULL.
-- Issue #13712: pysetup create should not convert package_data to extra_files.
+- Issue #18559: Fix NULL pointer dereference error in _pickle module
-- Issue #11805: package_data in setup.cfg should allow more than one value.
+- Issue #18556: Check the return type of PyUnicode_AsWideChar() in ctype's
+ U_set().
-- Issue #13676: Handle strings with embedded zeros correctly in sqlite3.
+- Issue #17818: aifc.getparams now returns a namedtuple.
-- Issue #8828: Add new function os.replace(), for cross-platform renaming
- with overwriting.
+- Issue #18549: Eliminate dead code in socket_ntohl()
-- Issue #13848: open() and the FileIO constructor now check for NUL
- characters in the file name. Patch by Hynek Schlawack.
+- Issue #18530: Remove additional stat call from posixpath.ismount.
+ Patch by Alex Gaynor.
-- Issue #13806: The size check in audioop decompression functions was too
- strict and could reject valid compressed data. Patch by Oleg Plakhotnyuk.
+- Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj()
-- Issue #13812: When a multiprocessing Process child raises an exception,
- flush stderr after printing the exception traceback.
+- Issue #9177: Calling read() or write() now raises ValueError, not
+ AttributeError, on a closed SSL socket. Patch by Senko Rasic.
-- Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC
- IV attack countermeasure.
+- Issue #18513: Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 +
+ gcc.
-- Issue #13847: time.localtime() and time.gmtime() now raise an OSError instead
- of ValueError on failure. time.ctime() and time.asctime() now raises an
- OSError if localtime() failed. time.clock() now raises a RuntimeError if the
- processor time used is not available or its value cannot be represented
+- Issue #18479: Changed venv Activate.ps1 to make deactivate a function, and
+ removed Deactivate.ps1.
-- Issue #13772: In os.symlink() under Windows, do not try to guess the link
- target's type (file or directory). The detection was buggy and made the
- call non-atomic (therefore prone to race conditions).
+- Issue #18480: Add missing call to PyType_Ready to the _elementtree extension.
-- Issue #6631: Disallow relative file paths in urllib urlopen methods.
+- Issue #17778: Fix test discovery for test_multiprocessing. (Patch by
+ Zachary Ware.)
-- Issue #13722: Avoid silencing ImportErrors when initializing the codecs
- registry.
+- Issue #18393: The private module _gestalt and private functions
+ platform._mac_ver_gestalt, platform._mac_ver_lookup and
+ platform._bcd2str have been removed. This does not affect the public
+ interface of the platform module.
-- Issue #13781: Fix GzipFile bug that caused an exception to be raised when
- opening for writing using a fileobj returned by os.fdopen().
+- Issue #17482: functools.update_wrapper (and functools.wraps) now set the
+ __wrapped__ attribute correctly even if the underlying function has a
+ __wrapped__ attribute set.
-- Issue #13803: Under Solaris, distutils doesn't include bitness
- in the directory name.
+- Issue #18431: The new email header parser now decodes RFC2047 encoded words
+ in structured headers.
-- Issue #10278: Add time.wallclock() function, monotonic clock.
+- Issue #18432: The sched module's queue method was incorrectly returning
+ an iterator instead of a list.
-- Issue #13809: Fix regression where bz2 module wouldn't work when threads are
- disabled. Original patch by Amaury Forgeot d'Arc.
+- Issue #18044: The new email header parser was mis-parsing encoded words where
+ an encoded character immediately followed the '?' that follows the CTE
+ character, resulting in a decoding failure. They are now decoded correctly.
-- Issue #13589: Fix some serialization primitives in the aifc module.
- Patch by Oleg Plakhotnyuk.
+- Issue #18101: Tcl.split() now process strings nested in a tuple as it
+ do with byte strings.
-- Issue #13642: Unquote before b64encoding user:password during Basic
- Authentication. Patch contributed by Joonas Kuorilehto.
+- Issue #18116: getpass was always getting an error when testing /dev/tty,
+ and thus was always falling back to stdin, and would then raise an exception
+ if stdin could not be used (such as /dev/null). It also leaked an open file.
+ All of these issues are now fixed.
-- Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor.
- The hang would occur when retrieving the result of a scheduled future after
- the executor had been shut down.
+- Issue #17198: Fix a NameError in the dbm module. Patch by Valentina
+ Mukhamedzhanova.
-- Issue #13502: threading: Fix a race condition in Event.wait() that made it
- return False when the event was set and cleared right after.
+- Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form.
-- Issue #9993: When the source and destination are on different filesystems,
- and the source is a symlink, shutil.move() now recreates a symlink on the
- destination instead of copying the file contents. Patch by Jonathan Niehof
- and Hynek Schlawack.
+- Issue #18020: improve html.escape speed by an order of magnitude.
+ Patch by Matt Bryant.
-- Issue #12926: Fix a bug in tarfile's link extraction.
+- Issue #18347: ElementTree's html serializer now preserves the case of
+ closing tags.
-- Issue #13696: Fix the 302 Relative URL Redirection problem.
+- Issue #17261: Ensure multiprocessing's proxies use proper address.
-- Issue #13636: Weak ciphers are now disabled by default in the ssl module
- (except when SSLv2 is explicitly asked for).
+- Issue #18343: faulthandler.register() now keeps the previous signal handler
+ when the function is called twice, so faulthandler.unregister() restores
+ correctly the original signal handler.
-- Issue #12715: Add an optional symlinks argument to shutil functions
- (copyfile, copymode, copystat, copy, copy2). When that parameter is
- true, symlinks aren't dereferenced and the operation instead acts on the
- symlink itself (or creates one, if relevant). Patch by Hynek Schlawack.
+- Issue #17097: Make multiprocessing ignore EINTR.
-- Add a flags parameter to select.epoll.
+- Issue #18339: Negative ints keys in unpickler.memo dict no longer cause a
+ segfault inside the _pickle C extension.
-- Issue #13626: Add support for SSL Diffie-Hellman key exchange, through the
- SSLContext.load_dh_params() method and the ssl.OP_SINGLE_DH_USE option.
+- Issue #18240: The HMAC module is no longer restricted to bytes and accepts
+ any bytes-like object, e.g. memoryview. Original patch by Jonas Borgström.
-- Issue #11006: Don't issue low level warning in subprocess when pipe2() fails.
+- Issue #18224: Removed pydoc script from created venv, as it causes problems
+ on Windows and adds no value over and above python -m pydoc ...
-- Issue #13620: Support for Chrome browser in webbrowser. Patch contributed
- by Arnaud Calmettes.
+- Issue #18155: The csv module now correctly handles csv files that use
+ a delimter character that has a special meaning in regexes, instead of
+ throwing an exception.
-- Issue #11829: Fix code execution holes in inspect.getattr_static for
- metaclasses with metaclasses. Patch by Andreas Stührk.
+- Issue #14360: encode_quopri can now be successfully used as an encoder
+ when constructing a MIMEApplication object.
-- Issue #12708: Add starmap() and starmap_async() methods (similar to
- itertools.starmap()) to multiprocessing.Pool. Patch by Hynek Schlawack.
+- Issue #11390: Add -o and -f command line options to the doctest CLI to
+ specify doctest options (and convert it to using argparse).
-- Issue #1785: Fix inspect and pydoc with misbehaving descriptors.
+- Issue #18135: ssl.SSLSocket.write() now raises an OverflowError if the input
+ string in longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain()
+ raises a ValueError if the password is longer than 2 gigabytes. The ssl
+ module does not support partial write.
-- Issue #13637: "a2b" functions in the binascii module now accept ASCII-only
- unicode strings.
+- Issue #11016: Add C implementation of the stat module as _stat.
-- Issue #13634: Add support for querying and disabling SSL compression.
+- Issue #18248: Fix libffi build on AIX.
-- Issue #13627: Add support for SSL Elliptic Curve-based Diffie-Hellman
- key exchange, through the SSLContext.set_ecdh_curve() method and the
- ssl.OP_SINGLE_ECDH_USE option.
+- Issue #18259: Declare sethostname in socketmodule.c for AIX
-- Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers
- choose the cipher based on their own preferences, rather than on the
- client's.
+- Issue #18147: Add diagnostic functions to ssl.SSLContext(). get_ca_list()
+ lists all loaded CA certificates and cert_store_stats() returns amount of
+ loaded X.509 certs, X.509 CA certs and CRLs.
-- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas
- Stührk.
+- Issue #18167: cgi.FieldStorage no longer fails to handle multipart/form-data
+ when \r\n appears at end of 65535 bytes without other newlines.
-- Issue #7502: Fix equality comparison for DocTestCase instances. Patch by
- Cédric Krier.
+- Issue #18076: Introduce importlib.util.decode_source().
+
-- Issue #11870: threading: Properly reinitialize threads internal locks and
- condition variables to avoid deadlocks in child processes.
+- Issue #18357: add tests for dictview set difference.
+ Patch by Fraser Tweedale.
-- Issue #8035: urllib: Fix a bug where the client could remain stuck after a
- redirection or an error.
+- importlib.abc.SourceLoader.get_source() no longer changes SyntaxError or
+ UnicodeDecodeError into ImportError.
-- Issue #13560: os.strerror() now uses the current locale encoding instead of
- UTF-8.
+- Issue #18058, 18057: Make the namespace package loader meet the
+ importlib.abc.InspectLoader ABC, allowing for namespace packages to work with
+ runpy.
-- Issue #8373: The filesystem path of AF_UNIX sockets now uses the filesystem
- encoding and the surrogateescape error handler, rather than UTF-8. Patch
- by David Watson.
+- Issue #17177: The imp module is pending deprecation.
-- Issue #10350: Read and save errno before calling a function which might
- overwrite it. Original patch by Hallvard B Furuseth.
+- subprocess: Prevent a possible double close of parent pipe fds when the
+ subprocess exec runs into an error. Prevent a regular multi-close of the
+ /dev/null fd when any of stdin, stdout and stderr was set to DEVNULL.
-- Issue #11610: Introduce a more general way to declare abstract properties.
+- Issue #18194: Introduce importlib.util.cache_from_source() and
+ source_from_cache() while documenting the equivalent functions in imp as
+ deprecated.
-- Issue #13591: A bug in importlib has been fixed that caused import_module
- to load a module twice.
+- Issue #17907: Document imp.new_module() as deprecated in favour of
+ types.ModuleType.
-- Issue #13449 sched.scheduler.run() method has a new "blocking" parameter which
- when set to False makes run() execute the scheduled events due to expire
- soonest (if any) and then return. Patch by Giampaolo Rodolà.
+- Issue #18192: Introduce importlib.util.MAGIC_NUMBER and document as deprecated
+ imp.get_magic().
-- Issue #8684 sched.scheduler class can be safely used in multi-threaded
- environments. Patch by Josiah Carlson and Giampaolo Rodolà.
+- Issue #18149: Add filecmp.clear_cache() to manually clear the filecmp cache.
+ Patch by Mark Levitt
-- Alias resource.error to OSError ala PEP 3151.
+- Issue #18193: Add importlib.reload().
-- Issue #5689: Add support for lzma compression to the tarfile module.
+- Issue #18157: Stop using imp.load_module() in pydoc.
-- Issue #13248: Turn 3.2's PendingDeprecationWarning into 3.3's
- DeprecationWarning. It covers 'cgi.escape', 'importlib.abc.PyLoader',
- 'importlib.abc.PyPycLoader', 'nntplib.NNTP.xgtitle', 'nntplib.NNTP.xpath',
- and private attributes of 'smtpd.SMTPChannel'.
+- Issue #16102: Make uuid._netbios_getnode() work again on Python 3.
-- Issue #5905, Issue #13560: time.strftime() is now using the current locale
- encoding, instead of UTF-8, if the wcsftime() function is not available.
+- Issue #17134: Add ssl.enum_cert_store() as interface to Windows' cert store.
-- Issue #13464: Add a readinto() method to http.client.HTTPResponse. Patch
- by Jon Kuhn.
+- Issue #18143: Implement ssl.get_default_verify_paths() in order to debug
+ the default locations for cafile and capath.
-- tarfile.py: Correctly detect bzip2 compressed streams with blocksizes
- other than 900k.
+- Issue #17314: Move multiprocessing.forking over to importlib.
-- Issue #13439: Fix many errors in turtle docstrings.
+- Issue #11959: SMTPServer and SMTPChannel now take an optional map, use of
+ which avoids affecting global state.
-- Issue #6715: Add a module 'lzma' for compression using the LZMA algorithm.
- Thanks to Per Øyvind Karlsen for the initial implementation.
+- Issue #18109: os.uname() now decodes fields from the locale encoding, and
+ socket.gethostname() now decodes the hostname from the locale encoding,
+ instead of using the UTF-8 encoding in strict mode.
-- Issue #13487: Make inspect.getmodule robust against changes done to
- sys.modules while it is iterating over it.
+- Issue #18089: Implement importlib.abc.InspectLoader.load_module.
-- Issue #12618: Fix a bug that prevented py_compile from creating byte
- compiled files in the current directory. Initial patch by Sjoerd de Vries.
+- Issue #18088: Introduce importlib.abc.Loader.init_module_attrs for setting
+ module attributes. Leads to the pending deprecation of
+ importlib.util.module_for_loader.
-- Issue #13444: When stdout has been closed explicitly, we should not attempt
- to flush it at shutdown and print an error.
+- Issue #17403: urllib.parse.robotparser normalizes the urls before adding to
+ ruleline. This helps in handling certain types invalid urls in a conservative
+ manner. Patch contributed by Mher Movsisyan.
-- Issue #12567: The curses module uses Unicode functions for Unicode arguments
- when it is linked to the ncurses library. It encodes also Unicode strings to
- the locale encoding instead of UTF-8.
+- Issue #18070: Have importlib.util.module_for_loader() set attributes
+ unconditionally in order to properly support reloading.
-- Issue #12856: Ensure child processes do not inherit the parent's random
- seed for filename generation in the tempfile module. Patch by Brian
- Harring.
+- Added importlib.util.module_to_load to return a context manager to provide the
+ proper module object to load.
-- Issue #9957: SpooledTemporaryFile.truncate() now accepts an optional size
- parameter, as other file-like objects. Patch by Ryan Kelly.
+- Issue #18025: Fixed a segfault in io.BufferedIOBase.readinto() when raw
+ stream's read() returns more bytes than requested.
-- Issue #13458: Fix a memory leak in the ssl module when decoding a
- certificate with a subjectAltName. Patch by Robert Xiao.
+- Issue #18011: As was originally intended, base64.b32decode() now raises a
+ binascii.Error if there are non-b32-alphabet characters present in the input
+ string, instead of a TypeError.
-- Issue #13415: os.unsetenv() doesn't ignore errors anymore.
+- Issue #18072: Implement importlib.abc.InspectLoader.get_code() and
+ importlib.abc.ExecutionLoader.get_code().
-- Issue #13245: sched.scheduler class constructor's timefunc and
- delayfunct parameters are now optional.
- scheduler.enter and scheduler.enterabs methods gained a new kwargs parameter.
- Patch contributed by Chris Clark.
+- Issue #8240: Set the SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER flag on SSL
+ sockets.
-- Issue #12328: Under Windows, refactor handling of Ctrl-C events and
- make _multiprocessing.win32.WaitForMultipleObjects interruptible when
- the wait_flag parameter is false. Patch by sbt.
+- Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X
+ with port None or "0" and flags AI_NUMERICSERV.
-- Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is
- raised when the wrapped raw file is non-blocking and the write would block.
- Previous code assumed that the raw write() would raise BlockingIOError, but
- RawIOBase.write() is defined to returned None when the call would block.
- Patch by sbt.
+- Issue #16986: ElementTree now correctly works with string input when the
+ internal XML encoding is not UTF-8 or US-ASCII.
-- Issue #13358: HTMLParser now calls handle_data only once for each CDATA.
+- Issue #17996: socket module now exposes AF_LINK constant on BSD and OSX.
-- Issue #4147: minidom's toprettyxml no longer adds whitespace around a text
- node when it is the only child of an element. Initial patch by Dan
- Kenigsberg.
+- Issue #17900: Allowed pickling of recursive OrderedDicts. Decreased pickled
+ size and pickling time.
-- Issue #13374: The Windows bytes API has been deprecated in the os module. Use
- Unicode filenames instead of bytes filenames to not depend on the ANSI code
- page anymore and to support any filename.
+- Issue #17914: Add os.cpu_count(). Patch by Yogesh Chaudhari, based on an
+ initial patch by Trent Nelson.
-- Issue #13297: Use bytes type to send and receive binary data through XMLRPC.
+- Issue #17812: Fixed quadratic complexity of base64.b32encode().
+ Optimize base64.b32encode() and base64.b32decode() (speed up to 3x).
-- Issue #6397: Support "/dev/poll" polling objects in select module,
- under Solaris & derivatives.
+- Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of
+ service using certificates with many wildcards (CVE-2013-2099).
-- Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly
- handles non-valid attributes, including adjacent and unquoted attributes.
+- Issue #15758: Fix FileIO.readall() so it no longer has O(n**2) complexity.
-- Issue #13193: Fix distutils.filelist.FileList and packaging.manifest.Manifest
- under Windows.
+- Issue #14596: The struct.Struct() objects now use a more compact
+ implementation.
-- Issue #13384: Remove unnecessary __future__ import in Lib/random.py
+- Issue #17981: logging's SysLogHandler now closes the socket when it catches
+ socket OSErrors.
-- Issue #13149: Speed up append-only StringIO objects.
+- Issue #17964: Fix os.sysconf(): the return type of the C sysconf() function
+ is long, not int.
-- Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely
- when called with a timeout. Patch by Arnaud Ysmal.
+- Fix typos in the multiprocessing module.
-- Issue #13254: Fix Maildir initialization so that maildir contents
- are read correctly.
+- Issue #17754: Make ctypes.util.find_library() independent of the locale.
-- Issue #3067: locale.setlocale() now raises TypeError if the second
- argument is an invalid iterable. Its documentation and docstring
- were also updated. Initial patch by Jyrki Pulliainen.
+- Issue #17968: Fix memory leak in os.listxattr().
-- Issue #13140: Fix the daemon_threads attribute of ThreadingMixIn.
+- Issue #17606: Fixed support of encoded byte strings in the XMLGenerator
+ characters() and ignorableWhitespace() methods. Original patch by Sebastian
+ Ortiz Vasquez.
-- Issue #13339: Fix compile error in posixmodule.c due to missing semicolon.
- Thanks to Robert Xiao.
+- Issue #17732: Ignore distutils.cfg options pertaining to install paths if a
+ virtual environment is active.
-- Byte compilation in packaging is now isolated from the calling Python -B or
- -O options, instead of being disallowed under -B or buggy under -O.
+- Issue #17915: Fix interoperability of xml.sax with file objects returned by
+ codecs.open().
-- Issue #10570: curses.putp() and curses.tparm() are now expecting a byte
- string, instead of a Unicode string.
+- Issue #16601: Restarting iteration over tarfile really restarts rather
+ than continuing from where it left off. Patch by Michael Birtwell.
-- Issue #13295: http.server now produces valid HTML 4.01 strict.
+- Issue #17289: The readline module now plays nicer with external modules
+ or applications changing the rl_completer_word_break_characters global
+ variable. Initial patch by Bradley Froehle.
-- Issue #2892: preserve iterparse events in case of SyntaxError.
+- Issue #12181: select module: Fix struct kevent definition on OpenBSD 64-bit
+ platforms. Patch by Federico Schwindt.
-- Issue #13287: urllib.request and urllib.error now contains an __all__
- attribute to expose only relevant classes and functions. Patch by Florent
- Xicluna.
+- Issue #11816: multiple improvements to the dis module: get_instructions
+ generator, ability to redirect output to a file, Bytecode and Instruction
+ abstractions. Patch by Nick Coghlan, Ryan Kelly and Thomas Kluyver.
-- Issue #670664: Fix HTMLParser to correctly handle the content of
- ``<script>...</script>`` and ``<style>...</style>``.
+- Issue #13831: Embed stringification of remote traceback in local
+ traceback raised when pool task raises an exception.
-- Issue #10817: Fix urlretrieve function to raise ContentTooShortError even
- when reporthook is None. Patch by Jyrki Pulliainen.
+- Issue #15528: Add weakref.finalize to support finalization using
+ weakref callbacks.
-- Fix the xmlrpc.client user agent to return something similar to
- urllib.request user agent: "Python-xmlrpc/3.3".
+- Issue #14173: Avoid crashing when reading a signal handler during
+ interpreter shutdown.
-- Issue #13293: Better error message when trying to marshal bytes using
- xmlrpc.client.
+- Issue #15902: Fix imp.load_module() accepting None as a file when loading an
+ extension module.
-- Issue #13291: NameError in xmlrpc package.
+- Issue #13721: SSLSocket.getpeercert() and SSLSocket.do_handshake() now
+ raise an OSError with ENOTCONN, instead of an AttributeError, when the
+ SSLSocket is not connected.
-- Issue #13258: Use callable() built-in in the standard library.
+- Issue #14679: add an __all__ (that contains only HTMLParser) to html.parser.
-- Issue #13273: fix a bug that prevented HTMLParser to properly detect some
- tags when strict=False.
+- Issue #17802: Fix an UnboundLocalError in html.parser. Initial tests by
+ Thomas Barlow.
-- Issue #11183: Add finer-grained exceptions to the ssl module, so that
- you don't have to inspect the exception's attributes in the common case.
+- Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by
+ extention load_module()) now have a better chance of working when reloaded.
-- Issue #13216: Add cp65001 codec, the Windows UTF-8 (CP_UTF8).
+- Issue #17804: New function ``struct.iter_unpack`` allows for streaming
+ struct unpacking.
-- Issue #13226: Add RTLD_xxx constants to the os module. These constants can be
- used with sys.setdlopenflags().
+- Issue #17830: When keyword.py is used to update a keyword file, it now
+ preserves the line endings of the original file.
-- Issue #10278: Add clock_getres(), clock_gettime() and CLOCK_xxx constants to
- the time module. time.clock_gettime(time.CLOCK_MONOTONIC) provides a
- monotonic clock
+- Issue #17272: Making the urllib.request's Request.full_url a descriptor.
+ Fixes bugs with assignment to full_url. Patch by Demian Brecht.
-- Issue #10332: multiprocessing: fix a race condition when a Pool is closed
- before all tasks have completed.
+- Issue #17353: Plistlib emitted empty data tags with deeply nested datastructures
-- Issue #13255: wrong docstrings in array module.
+- Issue #11714: Use 'with' statements to assure a Semaphore releases a
+ condition variable. Original patch by Thomas Rachel.
-- Issue #8540: Remove deprecated Context._clamp attribute in Decimal module.
+- Issue #16624: `subprocess.check_output` now accepts an `input` argument,
+ allowing the subprocess's stdin to be provided as a (byte) string.
+ Patch by Zack Weinberg.
-- Issue #13235: Added DeprecationWarning to logging.warn() method and function.
+- Issue #17795: Reverted backwards-incompatible change in SysLogHandler with
+ Unix domain sockets.
-- Issue #9168: now smtpd is able to bind privileged port.
+- Issue #16694: Add a pure Python implementation of the operator module.
+ Patch by Zachary Ware.
-- Issue #12529: fix cgi.parse_header issue on strings with double-quotes and
- semicolons together. Patch by Ben Darnell and Petri Lehtinen.
+- Issue #11182: remove the unused and undocumented pydoc.Scanner class.
+ Patch by Martin Morrison.
-- Issue #13227: functools.lru_cache() now has a option to distinguish
- calls with different argument types.
+- Issue #17741: Add ElementTree.XMLPullParser, an event-driven parser for
+ non-blocking applications.
-- Issue #6090: zipfile raises a ValueError when a document with a timestamp
- earlier than 1980 is provided. Patch contributed by Petri Lehtinen.
+- Issue #17555: Fix ForkAwareThreadLock so that size of after fork
+ registry does not grow exponentially with generation of process.
-- Issue #13150: sysconfig no longer parses the Makefile and config.h files
- when imported, instead doing it at build time. This makes importing
- sysconfig faster and reduces Python startup time by 20%.
+- Issue #17707: fix regression in multiprocessing.Queue's get() method where
+ it did not block for short timeouts.
-- Issue #12448: smtplib now flushes stdout while running ``python -m smtplib``
- in order to display the prompt correctly.
+- Issue #17720: Fix the Python implementation of pickle.Unpickler to correctly
+ process the APPENDS opcode when it is used on non-list objects.
-- Issue #12454: The mailbox module is now using ASCII, instead of the locale
- encoding, to read and write .mh_sequences files.
+- Issue #17012: shutil.which() no longer falls back to the PATH environment
+ variable if an empty path argument is specified. Patch by Serhiy Storchaka.
-- Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are
- now available on Windows.
+- Issue #17710: Fix pickle raising a SystemError on bogus input.
-- Issue #1673007: urllib.request now supports HEAD request via new method argument.
- Patch contributions by David Stanek, Patrick Westerhoff and Ezio Melotti.
+- Issue #17341: Include the invalid name in the error messages from re about
+ invalid group names.
-- Issue #12386: packaging does not fail anymore when writing the RESOURCES
- file.
+- Issue #17702: os.environ now raises KeyError with the original environment
+ variable name (str on UNIX), instead of using the encoded name (bytes on
+ UNIX).
-- Issue #13158: Fix decoding and encoding of GNU tar specific base-256 number
- fields in tarfile.
+- Issue #16163: Make the importlib based version of pkgutil.iter_importers
+ work for submodules. Initial patch by Berker Peksag.
-- Issue #13025: mimetypes is now reading MIME types using the UTF-8 encoding,
- instead of the locale encoding.
+- Issue #16804: Fix a bug in the 'site' module that caused running
+ 'python -S -m site' to incorrectly throw an exception.
-- Issue #10653: On Windows, use strftime() instead of wcsftime() because
- wcsftime() doesn't format time zone correctly.
+- Issue #15480: Remove the deprecated and unused TYPE_INT64 code from marshal.
+ Initial patch by Daniel Riti.
-- Issue #13150: The tokenize module doesn't compile large regular expressions
- at startup anymore.
+- Issue #2118: SMTPException is now a subclass of OSError.
-- Issue #11171: Fix distutils.sysconfig.get_makefile_filename when Python was
- configured with different prefix and exec-prefix.
+- Issue #17016: Get rid of possible pointer wraparounds and integer overflows
+ in the re module. Patch by Nickolai Zeldovich.
-- Issue #11254: Teach distutils and packaging to compile .pyc and .pyo files in
- PEP 3147-compliant __pycache__ directories.
+- Issue #16658: add missing return to HTTPConnection.send()
+ Patch by Jeff Knupp.
-- Issue #7367: Fix pkgutil.walk_paths to skip directories whose
- contents cannot be read.
+- Issue #9556: the logging package now allows specifying a time-of-day for a
+ TimedRotatingFileHandler to rotate.
-- Issue #3163: The struct module gets new format characters 'n' and 'N'
- supporting C integer types ``ssize_t`` and ``size_t``, respectively.
+- Issue #14971: unittest test discovery no longer gets confused when a function
+ has a different __name__ than its name in the TestCase class dictionary.
-- Issue #13099: Fix sqlite3.Cursor.lastrowid under a Turkish locale.
- Reported and diagnosed by Thomas Kluyver.
+- Issue #17487: The wave getparams method now returns a namedtuple rather than
+ a plain tuple.
-- Issue #13087: BufferedReader.seek() now always raises UnsupportedOperation
- if the underlying raw stream is unseekable, even if the seek could be
- satisfied using the internal buffer. Patch by John O'Connor.
+- Issue #17675: socket repr() provides local and remote addresses (if any).
+ Patch by Giampaolo Rodola'
-- Issue #7689: Allow pickling of dynamically created classes when their
- metaclass is registered with copyreg. Patch by Nicolas M. Thiéry and Craig
- Citro.
+- Issue #17093: Make the ABCs in importlib.abc provide default values or raise
+ reasonable exceptions for their methods to make them more amenable to super()
+ calls.
-- Issue #13034: When decoding some SSL certificates, the subjectAltName
- extension could be unreported.
+- Issue #17566: Make importlib.abc.Loader.module_repr() optional instead of an
+ abstractmethod; now it raises NotImplementedError so as to be ignored by default.
-- Issue #12306: Expose the runtime version of the zlib C library as a constant,
- ZLIB_RUNTIME_VERSION, in the zlib module. Patch by Torsten Landschoff.
+- Issue #17678: Remove the use of deprecated method in http/cookiejar.py by
+ changing the call to get_origin_req_host() to origin_req_host.
-- Issue #12959: Add collections.ChainMap to collections.__all__.
+- Issue #17666: Fix reading gzip files with an extra field.
-- Issue #8933: distutils' PKG-INFO files and packaging's METADATA files will
- now correctly report Metadata-Version: 1.1 instead of 1.0 if a Classifier or
- Download-URL field is present.
+- Issue #16475: Support object instancing, recursion and interned strings
+ in marshal
-- Issue #12567: Add curses.unget_wch() function. Push a character so the next
- get_wch() will return it.
+- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
-- Issue #9561: distutils and packaging now writes egg-info files using UTF-8,
- instead of the locale encoding.
+- Issue #16795: On the ast.arguments object, unify vararg with varargannotation
+ and kwarg and kwargannotation. Change the column offset of ast.Attribute to be
+ at the attribute name.
-- Issue #8286: The distutils command sdist will print a warning message instead
- of crashing when an invalid path is given in the manifest template.
+- Issue #17434: Properly raise a SyntaxError when a string occurs between future
+ imports.
-- Issue #12841: tarfile unnecessarily checked the existence of numerical user
- and group ids on extraction. If one of them did not exist the respective id
- of the current user (i.e. root) was used for the file and ownership
- information was lost.
+- Issue #17117: Import and @importlib.util.set_loader now set __loader__ when
+ it has a value of None or the attribute doesn't exist.
-- Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape
- more than 128 entities. Patch by Peter Otten.
+- Issue #17032: The "global" in the "NameError: global name 'x' is not defined"
+ error message has been removed. Patch by Ram Rachum.
-- Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses.
+- Issue #18080: When building a C extension module on OS X, if the compiler
+ is overriden with the CC environment variable, use the new compiler as
+ the default for linking if LDSHARED is not also overriden. This restores
+ Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0.
-- Issue #12494: On error, call(), check_call(), check_output() and
- getstatusoutput() functions of the subprocess module now kill the process,
- read its status (to avoid zombis) and close pipes.
+- Issue #18113: Fixed a refcount leak in the curses.panel module's
+ set_userptr() method. Reported by Atsuo Ishimoto.
-- Issue #12720: Expose low-level Linux extended file attribute functions in os.
+- Implement PEP 443 "Single-dispatch generic functions".
-- Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi
- now respect a --skip-build option given to bdist. The packaging commands
- were fixed too.
+- Implement PEP 435 "Adding an Enum type to the Python standard library".
-- Issue #12847: Fix a crash with negative PUT and LONG_BINPUT arguments in
- the C pickle implementation.
+- Issue #15596: Faster pickling of unicode strings.
-- Issue #11564: Avoid crashes when trying to pickle huge objects or containers
- (more than 2**31 items). Instead, in most cases, an OverflowError is raised.
+- Issue #17572: Avoid chained exceptions when passing bad directives to
+ time.strptime(). Initial patch by Claudiu Popa.
-- Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is
- greater than FD_SETSIZE.
+- Issue #17435: threading.Timer's __init__ method no longer uses mutable
+ default values for the args and kwargs parameters.
-- Issue #12839: Fix crash in zlib module due to version mismatch.
- Fix by Richard M. Tew.
+- Issue #17526: fix an IndexError raised while passing code without filename to
+ inspect.findsource(). Initial patch by Tyler Doyle.
-- Issue #9923: The mailcap module now correctly uses the platform path
- separator for the MAILCAP environment variable on non-POSIX platforms.
+- Issue #17540: Added style parameter to logging formatter configuration by dict.
-- Issue #12835: Follow up to #6560 that unconditionally prevents use of the
- unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets. Patch by David
- Watson.
+- Issue #16692: The ssl module now supports TLS 1.1 and TLS 1.2. Initial
+ patch by Michele Orrù.
-- Issue #12803: SSLContext.load_cert_chain() now accepts a password argument
- to be used if the private key is encrypted. Patch by Adam Simpkins.
+- Issue #17025: multiprocessing: Reduce Queue and SimpleQueue contention.
-- Issue #11657: Fix sending file descriptors over 255 over a multiprocessing
- Pipe.
+- Issue #17536: Add to webbrowser's browser list: www-browser, x-www-browser,
+ iceweasel, iceape.
-- Issue #12811: tabnanny.check() now promptly closes checked files. Patch by
- Anthony Briggs.
+- Issue #17150: pprint now uses line continuations to wrap long string
+ literals.
-- Issue #6560: The sendmsg/recvmsg API is now exposed by the socket module
- when provided by the underlying platform, supporting processing of
- ancillary data in pure Python code. Patch by David Watson and Heiko Wundram.
+- Issue #17488: Change the subprocess.Popen bufsize parameter default value
+ from unbuffered (0) to buffering (-1) to match the behavior existing code
+ expects and match the behavior of the subprocess module in Python 2 to avoid
+ introducing hard to track down bugs.
-- Issue #12326: On Linux, sys.platform doesn't contain the major version
- anymore. It is now always 'linux', instead of 'linux2' or 'linux3' depending
- on the Linux version used to build Python.
+- Issue #17521: Corrected non-enabling of logger following two calls to
+ fileConfig().
-- Issue #12213: Fix a buffering bug with interleaved reads and writes that
- could appear on BufferedRandom streams.
+- Issue #17508: Corrected logging MemoryHandler configuration in dictConfig()
+ where the target handler wasn't configured first.
-- Issue #12778: Reduce memory consumption when JSON-encoding a large
- container of many small objects.
+- Issue #17209: curses.window.get_wch() now correctly handles KeyboardInterrupt
+ (CTRL+c).
-- Issue #12650: Fix a race condition where a subprocess.Popen could leak
- resources (FD/zombie) when killed at the wrong time.
+- Issue #5713: smtplib now handles 421 (closing connection) error codes when
+ sending mail by closing the socket and reporting the 421 error code via the
+ exception appropriate to the command that received the error response.
-- Issue #12744: Fix inefficient representation of integers between 2**31 and
- 2**63 on systems with a 64-bit C "long".
+- Issue #16997: unittest.TestCase now provides a subTest() context manager
+ to procedurally generate, in an easy way, small test instances.
-- Issue #12646: Add an 'eof' attribute to zlib.Decompress, to make it easier to
- detect truncated input streams.
+- Issue #17485: Also delete the Request Content-Length header if the data
+ attribute is deleted. (Follow on to issue Issue #16464).
-- Issue #11513: Fix exception handling ``tarfile.TarFile.gzopen()`` when
- the file cannot be opened.
+- Issue #15927: CVS now correctly parses escaped newlines and carriage
+ when parsing with quoting turned off.
-- Issue #12687: Fix a possible buffering bug when unpickling text mode
- (protocol 0, mostly) pickles.
+- Issue #17467: add readline and readlines support to mock_open in
+ unittest.mock.
-- Issue #10087: Fix the html output format of the calendar module.
+- Issue #13248: removed deprecated and undocumented difflib.isbjunk,
+ isbpopular.
-- Issue #13121: add support for inplace math operators to collections.Counter.
+- Issue #17192: Update the ctypes module's libffi to v3.0.13. This
+ specifically addresses a stack misalignment issue on x86 and issues on
+ some more recent platforms.
-- Add support for unary plus and unary minus to collections.Counter.
+- Issue #8862: Fixed curses cleanup when getkey is interrputed by a signal.
-- Issue #12683: urlparse updated to include svn as schemes that uses relative
- paths. (svn from 1.5 onwards support relative path).
+- Issue #17443: imaplib.IMAP4_stream was using the default unbuffered IO
+ in subprocess, but the imap code assumes buffered IO. In Python2 this
+ worked by accident. IMAP4_stream now explicitly uses buffered IO.
-- Issue #12655: Expose functions from sched.h in the os module: sched_yield(),
- sched_setscheduler(), sched_getscheduler(), sched_setparam(),
- sched_get_min_priority(), sched_get_max_priority(), sched_rr_get_interval(),
- sched_getaffinity(), sched_setaffinity().
+- Issue #17476: Fixed regression relative to Python2 in undocumented pydoc
+ 'allmethods'; it was missing unbound methods on the class.
-- Add ThreadError to threading.__all__.
+- Issue #17474: Remove the deprecated methods of Request class.
-- Issues #11104, #8688: Fix the behavior of distutils' sdist command with
- manually-maintained MANIFEST files.
+- Issue #16709: unittest discover order is no-longer filesystem specific. Patch
+ by Jeff Ramnani.
-- Issue #11281: smtplib.STMP gets source_address parameter, which adds the
- ability to bind to specific source address on a machine with multiple
- interfaces. Patch by Paulo Scardine.
+- Use the HTTPS PyPI url for upload, overriding any plain HTTP URL in pypirc.
-- Issue #12464: tempfile.TemporaryDirectory.cleanup() should not follow
- symlinks: fix it. Patch by Petri Lehtinen.
+- Issue #5024: sndhdr.whichhdr now returns the frame count for WAV files
+ rather than -1.
-- Issue #8887: "pydoc somebuiltin.somemethod" (or help('somebuiltin.somemethod')
- in Python code) now finds the doc of the method.
+- Issue #17460: Remove the strict argument of HTTPConnection and removing the
+ DeprecationWarning being issued from 3.2 onwards.
-- Issue #10968: Remove indirection in threading. The public names (Event,
- Condition, etc.) used to be factory functions returning instances of hidden
- classes (_Event, _Condition, etc.), because (if Guido recalls correctly) this
- code pre-dates the ability to subclass extension types. It is now possible
- to inherit from these classes, without having to import the private
- underscored names like multiprocessing did.
+- Issue #16880: Do not assume _imp.load_dynamic() is defined in the imp module.
-- Issue #9723: Add shlex.quote functions, to escape filenames and command
- lines.
+- Issue #16389: Fixed a performance regression relative to Python 3.1 in the
+ caching of compiled regular expressions.
-- Issue #12603: Fix pydoc.synopsis() on files with non-negative st_mtime.
+- Added missing FeedParser and BytesFeedParser to email.parser.__all__.
-- Issue #12514: Use try/finally to assure the timeit module restores garbage
- collections when it is done.
+- Issue #17431: Fix missing import of BytesFeedParser in email.parser.
-- Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is
- given as a low fd, it gets overwritten.
+- Issue #12921: http.server's send_error takes an explain argument to send more
+ information in response. Patch contributed by Karl.
-- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscates)
- ``Connection: close`` header.
+- Issue #17414: Add timeit, repeat, and default_timer to timeit.__all__.
-- Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling.
+- Issue #1285086: Get rid of the refcounting hack and speed up
+ urllib.parse.unquote() and urllib.parse.unquote_to_bytes().
-- Issue #1813: Fix codec lookup under Turkish locales.
+- Issue #17099: Have importlib.find_loader() raise ValueError when __loader__
+ is not set, harmonizing with what happens when the attribute is set to None.
-- Issue #12591: Improve support of "universal newlines" in the subprocess
- module: the piped streams can now be properly read from or written to.
+- Expose the O_PATH constant in the os module if it is available.
-- Issue #12591: Allow io.TextIOWrapper to work with raw IO objects (without
- a read1() method), and add a *write_through* parameter to mandate
- unbuffered writes.
+- Issue #17368: Fix an off-by-one error in the Python JSON decoder that caused
+ a failure while decoding empty object literals when object_pairs_hook was
+ specified.
-- Issue #10883: Fix socket leaks in urllib.request when using FTP.
+- Issue #17385: Fix quadratic behavior in threading.Condition. The FIFO
+ queue now uses a deque instead of a list.
-- Issue #12592: Make Python build on OpenBSD 5 (and future major releases).
+- Issue #15806: Add contextlib.ignore(). This creates a context manager to
+ ignore specified exceptions, replacing the "except SomeException: pass" idiom.
-- Issue #12372: POSIX semaphores are broken on AIX: don't use them.
+- Issue #14645: The email generator classes now produce output using the
+ specified linesep throughout. Previously if the prolog, epilog, or
+ body were stored with a different linesep, that linesep was used. This
+ fix corrects an RFC non-compliance issue with smtplib.send_message.
-- Issue #12551: Provide a get_channel_binding() method on SSL sockets so as
- to get channel binding data for the current SSL session (only the
- "tls-unique" channel binding is implemented). This allows the implementation
- of certain authentication mechanisms such as SCRAM-SHA-1-PLUS. Patch by
- Jacek Konieczny.
+- Issue #17278: Fix a crash in heapq.heappush() and heapq.heappop() when
+ the list is being resized concurrently.
-- Issue #665194: email.utils now has format_datetime and parsedate_to_datetime
- functions, allowing for round tripping of RFC2822 format dates.
+- Issue #16962: Use getdents64 instead of the obsolete getdents syscall
+ in the subprocess module on Linux.
-- Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2
- directory, so that "import DLFCN" and other similar imports work on
- Linux 3.0.
+- Issue #16935: unittest now counts the module as skipped if it raises SkipTest,
+ instead of counting it as an error. Patch by Zachary Ware.
-- Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN
- commands; they aren't required and in fact postfix doesn't support that form.
+- Issue #17018: Make Process.join() retry if os.waitpid() fails with EINTR.
-- Issue #12273: Remove ast.__version__. AST changes can be accounted for by
- checking sys.version_info or sys._mercurial.
+- Issue #17223: array module: Fix a crasher when converting an array containing
+ invalid characters (outside range [U+0000; U+10ffff]) to Unicode:
+ repr(array), str(array) and array.tounicode(). Patch written by Manuel Jacob.
-- Silence spurious "broken pipe" tracebacks when shutting down a
- ProcessPoolExecutor.
+- Issue #17197: profile/cProfile modules refactored so that code of run() and
+ runctx() utility functions is not duplicated in both modules.
-- Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor
- by joining all queues and processes when shutdown() is called.
+- Issue #14720: sqlite3: Convert datetime microseconds correctly.
+ Patch by Lowe Thiderman.
-- Issue #11603: Fix a crash when __str__ is rebound as __repr__. Patch by
- Andreas Stührk.
+- Issue #15132: Allow a list for the defaultTest argument of
+ unittest.TestProgram. Patch by Jyrki Pulliainen.
-- Issue #11321: Fix a crash with multiple imports of the _pickle module when
- embedding Python. Patch by Andreas Stührk.
+- Issue #17225: JSON decoder now counts columns in the first line starting
+ with 1, as in other lines.
-- Issue #6755: Add get_wch() method to curses.window class. Patch by Iñigo
- Serna.
+- Issue #6623: Added explicit DeprecationWarning for ftplib.netrc, which has
+ been deprecated and undocumented for a long time.
-- Add cgi.closelog() function to close the log file.
+- Issue #13700: Fix byte/string handling in imaplib authentication when an
+ authobject is specified.
-- Issue #12502: asyncore: fix polling loop with AF_UNIX sockets.
+- Issue #13153: Tkinter functions now raise TclError instead of ValueError when
+ a string argument contains non-BMP character.
-- Issue #4376: ctypes now supports nested structures in a endian different than
- the parent structure. Patch by Vlad Riscutia.
+- Issue #9669: Protect re against infinite loops on zero-width matching in
+ non-greedy repeat. Patch by Matthew Barnett.
-- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
- TextIOWrapper to a huge value, not TypeError.
+- Issue #13169: The maximal repetition number in a regular expression has been
+ increased from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on
+ 64-bit).
-- Issue #12504: Close file handles in a timely manner in packaging.database.
- This fixes a bug with the remove (uninstall) feature on Windows.
+- Issue #17143: Fix a missing import in the trace module. Initial patch by
+ Berker Peksag.
-- Issues #12169 and #10510: Factor out code used by various packaging commands
- to make HTTP POST requests, and make sure it uses CRLF.
+- Issue #15220: email.feedparser's line splitting algorithm is now simpler and
+ faster.
-- Issue #12016: Multibyte CJK decoders now resynchronize faster. They only
- ignore the first byte of an invalid byte sequence. For example,
- b'\xff\n'.decode('gb2312', 'replace') gives '\ufffd\n' instead of '\ufffd'.
+- Issue #16743: Fix mmap overflow check on 32 bit Windows.
-- Issue #12459: time.sleep() now raises a ValueError if the sleep length is
- negative, instead of an infinite sleep on Windows or raising an IOError on
- Linux for example, to have the same behaviour on all platforms.
+- Issue #16996: webbrowser module now uses shutil.which() to find a
+ web-browser on the executable search path.
-- Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support
- Python scripts using a encoding different than UTF-8 (read the coding cookie
- of the script).
+- Issue #16800: tempfile.gettempdir() no longer left temporary files when
+ the disk is full. Original patch by Amir Szekely.
-- Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors
- if the process has only one pipe.
+- Issue #17192: Import libffi-3.0.12.
-- Issue #12467: warnings: fix a race condition if a warning is emitted at
- shutdown, if globals()['__file__'] is None.
+- Issue #16564: Fixed regression relative to Python2 in the operation of
+ email.encoders.encode_7or8bit when used with binary data.
-- Issue #12451: pydoc: importfile() now opens the Python script in binary mode,
- instead of text mode using the locale encoding, to avoid encoding issues.
+- Issue #17052: unittest discovery should use self.testLoader.
-- Issue #12451: runpy: run_path() now opens the Python script in binary mode,
- instead of text mode using the locale encoding, to support other encodings
- than UTF-8 (scripts using the coding cookie).
+- Issue #4591: Uid and gid values larger than 2**31 are supported now.
-- Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead
- of the text mode (using the locale encoding) to avoid encoding issues.
+- Issue #17141: random.vonmisesvariate() no longer hangs for large kappas.
-- Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better
- conformance to the RFCs: correctly handle Sender and Resent- headers.
+- Issue #17149: Fix random.vonmisesvariate to always return results in
+ [0, 2*math.pi].
-- Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by
- the garbage collector while the Heap lock is held.
+- Issue #1470548: XMLGenerator now works with binary output streams.
-- Issue #12462: time.sleep() now immediately calls the (Python) signal handler
- if it is interrupted by a signal, instead of having to wait until the next
- instruction.
+- Issue #6975: os.path.realpath() now correctly resolves multiple nested
+ symlinks on POSIX platforms.
-- Issue #12442: new shutil.disk_usage function, providing total, used and free
- disk space statistics.
+- Issue #13773: sqlite3.connect() gets a new `uri` parameter to pass the
+ filename as a URI, allowing to pass custom options.
-- Issue #12451: The XInclude default loader of xml.etree now decodes files from
- UTF-8 instead of the locale encoding if the encoding is not specified. It now
- also opens XML files for the parser in binary mode instead of the text mode
- to avoid encoding issues.
+- Issue #16564: Fixed regression relative to Python2 in the operation of
+ email.encoders.encode_noop when used with binary data.
-- Issue #12451: doctest.debug_script() doesn't create a temporary file
- anymore to avoid encoding issues.
+- Issue #10355: The mode, name, encoding and newlines properties now work on
+ SpooledTemporaryFile objects even when they have not yet rolled over.
+ Obsolete method xreadline (which has never worked in Python 3) has been
+ removed.
-- Issue #12451: pydoc.synopsis() now reads the encoding cookie if available,
- to read the Python script from the right encoding.
+- Issue #16686: Fixed a lot of bugs in audioop module. Fixed crashes in
+ avgpp(), maxpp() and ratecv(). Fixed an integer overflow in add(), bias(),
+ and ratecv(). reverse(), lin2lin() and ratecv() no more lose precision for
+ 32-bit samples. max() and rms() no more returns a negative result and
+ various other functions now work correctly with 32-bit sample -0x80000000.
-- Issue #12451: distutils now opens the setup script in binary mode to read the
- encoding cookie, instead of opening it in UTF-8.
+- Issue #17073: Fix some integer overflows in sqlite3 module.
-- Issue #9516: On Mac OS X, change Distutils to no longer globally attempt to
- check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the
- interpreter process. This could cause failures in non-Distutils subprocesses
- and was unreliable since tests or user programs could modify the interpreter
- environment after Distutils set it. Instead, have Distutils set the
- deployment target only in the environment of each build subprocess. It is
- still possible to globally override the default by setting
- MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be
- greater or equal to the default value, the value with which the interpreter
- was built. Also, implement the same handling in packaging.
+- Issue #16723: httplib.HTTPResponse no longer marked closed when the connection
+ is automatically closed.
-- Issue #12422: In the copy module, don't store objects that are their own copy
- in the memo dict.
+- Issue #15359: Add CAN_BCM protocol support to the socket module. Patch by
+ Brian Thorne.
-- Issue #12303: Add sigwaitinfo() and sigtimedwait() to the signal module.
+- Issue #16948: Fix quoted printable body encoding for non-latin1 character
+ sets in the email package.
-- Issue #12404: Remove C89 incompatible code from mmap module. Patch by Akira
- Kitada.
+- Issue #16811: Fix folding of headers with no value in the provisional email
+ policies.
-- Issue #1874: email now detects and reports as a defect the presence of
- any CTE other than 7bit, 8bit, or binary on a multipart.
+- Issue #17132: Update symbol for "yield from" grammar changes.
-- Issue #12383: Fix subprocess module with env={}: don't copy the environment
- variables, start with an empty environment.
+- Issue #17076: Make copying of xattrs more tolerant of missing FS support.
+ Patch by Thomas Wouters.
-- Issue #11637: Fix support for importing packaging setup hooks from the
- project directory.
+- Issue #17089: Expat parser now correctly works with string input when the
+ internal XML encoding is not UTF-8 or US-ASCII. It also now accepts bytes
+ and strings larger than 2 GiB.
-- Issue #6771: Moved the curses.wrapper function from the single-function
- wrapper module into __init__, eliminating the module. Since __init__ was
- already importing the function to curses.wrapper, there is no API change.
+- Issue #6083: Fix multiple segmentation faults occured when PyArg_ParseTuple
+ parses nested mutating sequence.
-- Issue #11584: email.header.decode_header no longer fails if the header
- passed to it is a Header object, and Header/make_header no longer fail
- if given binary unknown-8bit input.
+- Issue #5289: Fix ctypes.util.find_library on Solaris.
-- Issue #11700: mailbox proxy object close methods can now be called multiple
- times without error.
+- Issue #17106: Fix a segmentation fault in io.TextIOWrapper when an underlying
+ stream or a decoder produces data of an unexpected type (i.e. when
+ io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec).
-- Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method.
+- Issue #17015: When it has a spec, a Mock object now inspects its signature
+ when matching calls, so that arguments can be matched positionally or
+ by name.
-- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP
- connection if its getresponse() method fails with a socket error. Patch
- written by Ezio Melotti.
+- Issue #15633: httplib.HTTPResponse is now mark closed when the server
+ sends less than the advertised Content-Length.
-- Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files.
- Original patch by Erik Bray.
+- Issue #12268: The io module file object write methods no longer abort early
+ when one of its write system calls is interrupted (EINTR).
-- Issue #9284: Allow inspect.findsource() to find the source of doctest
- functions.
+- Issue #6972: The zipfile module no longer overwrites files outside of
+ its destination path when extracting malicious zip files.
-- Issue #11595: Fix assorted bugs in packaging.util.cfg_to_args, a
- compatibility helper for the distutils-packaging transition. Original patch
- by Erik Bray.
+- Issue #4844: ZipFile now raises BadZipFile when opens a ZIP file with an
+ incomplete "End of Central Directory" record. Original patch by Guilherme
+ Polo and Alan McIntyre.
-- Issue #12287: In ossaudiodev, check that the device isn't closed in several
- methods.
+- Issue #17071: Signature.bind() now works when one of the keyword arguments
+ is named ``self``.
-- Issue #12009: Fixed regression in netrc file comment handling.
+- Issue #12004: Fix an internal error in PyZipFile when writing an invalid
+ Python file. Patch by Ben Morgan.
-- Issue #12246: Warn and fail when trying to install a third-party project from
- an uninstalled Python (built in a source checkout). Original patch by
- Tshepang Lekhonkhobe.
+- Have py_compile use importlib as much as possible to avoid code duplication.
+ Code now raises FileExistsError if the file path to be used for the
+ byte-compiled file is a symlink or non-regular file as a warning that import
+ will not keep the file path type if it writes to that path.
-- Issue #10694: zipfile now ignores garbage at the end of a zipfile.
+- Issue #16972: Have site.addpackage() consider already known paths even when
+ none are explicitly passed in. Bug report and fix by Kirill.
-- Issue #12283: Fixed regression in smtplib quoting of leading dots in DATA.
+- Issue #1602133: on Mac OS X a shared library build (``--enable-shared``)
+ now fills the ``os.environ`` variable correctly.
-- Issue #10424: Argparse now includes the names of the missing required
- arguments in the missing arguments error message.
+- Issue #15505: `unittest.installHandler` no longer assumes SIGINT handler is
+ set to a callable object.
-- Issue #12168: SysLogHandler now allows NUL termination to be controlled using
- a new 'append_nul' attribute on the handler.
+- Issue #13454: Fix a crash when deleting an iterator created by itertools.tee()
+ if all other iterators were very advanced before.
-- Issue #11583: Speed up os.path.isdir on Windows by using GetFileAttributes
- instead of os.stat.
+- Issue #12411: Fix to cgi.parse_multipart to correctly use bytes boundaries
+ and bytes data. Patch by Jonas Wagner.
-- Issue #12021: Make mmap's read() method argument optional. Patch by Petri
- Lehtinen.
+- Issue #16957: shutil.which() no longer searches a bare file name in the
+ current directory on Unix and no longer searches a relative file path with
+ a directory part in PATH directories. Patch by Thomas Kluyver.
-- Issue #9205: concurrent.futures.ProcessPoolExecutor now detects killed
- children and raises BrokenProcessPool in such a situation. Previously it
- would reliably freeze/deadlock.
+- Issue #1159051: GzipFile now raises EOFError when reading a corrupted file
+ with truncated header or footer.
-- Issue #12040: Expose a new attribute ``sentinel`` on instances of
- ``multiprocessing.Process``. Also, fix Process.join() to not use polling
- anymore, when given a timeout.
+- Issue #16993: shutil.which() now preserves the case of the path and extension
+ on Windows.
-- Issue #11893: Remove obsolete internal wrapper class ``SSLFakeFile`` in the
- smtplib module. Patch by Catalin Iacob.
+- Issue #16992: On Windows in signal.set_wakeup_fd, validate the file
+ descriptor argument.
-- Issue #12080: Fix a Decimal.power() case that took an unreasonably long time
- to compute.
+- Issue #16422: For compatibility with the Python version, the C version of
+ decimal now uses strings instead of integers for rounding mode constants.
-- Issue #12221: Remove __version__ attributes from pyexpat, pickle, tarfile,
- pydoc, tkinter, and xml.parsers.expat. This were useless version constants
- left over from the Mercurial transition
+- Issue #15861: tkinter now correctly works with lists and tuples containing
+ strings with whitespaces, backslashes or unbalanced braces.
-- Named tuples now work correctly with vars().
+- Issue #9720: zipfile now writes correct local headers for files larger than
+ 4 GiB.
-- Issue #12085: Fix an attribute error in subprocess.Popen destructor if the
- constructor has failed, e.g. because of an undeclared keyword argument. Patch
- written by Oleg Oshmyan.
+- Issue #16955: Fix the poll() method for multiprocessing's socket
+ connections on Windows.
-- Issue #12028: Make threading._get_ident() public, rename it to
- threading.get_ident() and document it. This function was already used using
- _thread.get_ident().
+- SSLContext.load_dh_params() now properly closes the input file.
-- Issue #12171: IncrementalEncoder.reset() of CJK codecs (multibytecodec) calls
- encreset() instead of decreset().
+- Issue #15031: Refactor some .pyc management code to cut down on code
+ duplication. Thanks to Ronan Lamy for the report and taking an initial stab
+ at the problem.
-- Issue #12218: Removed wsgiref.egg-info.
+- Issue #16398: Optimize deque.rotate() so that it only moves pointers
+ and doesn't touch the underlying data with increfs and decrefs.
-- Issue #12196: Add pipe2() to the os module.
+- Issue #16900: Issue a ResourceWarning when an ssl socket is left unclosed.
-- Issue #985064: Make plistlib more resilient to faulty input plists.
- Patch by Mher Movsisyan.
+- Issue #13899: \A, \Z, and \B now correctly match the A, Z, and B literals
+ when used inside character classes (e.g. '[\A]'). Patch by Matthew Barnett.
-- Issue #1625: BZ2File and bz2.decompress() now support multi-stream files.
- Initial patch by Nir Aides.
+- Issue #15545: Fix regression in sqlite3's iterdump method where it was
+ failing if the connection used a row factory (such as sqlite3.Row) that
+ produced unsortable objects. (Regression was introduced by fix for 9750).
-- Issue #12175: BufferedReader.read(-1) now calls raw.readall() if available.
+- fcntl: add F_DUPFD_CLOEXEC constant, available on Linux 2.6.24+.
-- Issue #12175: FileIO.readall() now only reads the file position and size
- once.
+- Issue #15972: Fix error messages when os functions expecting a file name or
+ file descriptor receive the incorrect type.
-- Issue #12175: RawIOBase.readall() now returns None if read() returns None.
+- Issue #8109: The ssl module now has support for server-side SNI, thanks
+ to a :meth:`SSLContext.set_servername_callback` method. Patch by Daniel
+ Black.
-- Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError
- if the file is closed.
+- Issue #16860: In tempfile, use O_CLOEXEC when available to set the
+ close-on-exec flag atomically.
-- Issue #11109: New service_action method for BaseServer, used by ForkingMixin
- class for cleanup. Initial Patch by Justin Warkentin.
+- Issue #16674: random.getrandbits() is now 20-40% faster for small integers.
-- Issue #12045: Avoid duplicate execution of command in
- ctypes.util._get_soname(). Patch by Sijin Joseph.
+- Issue #16009: JSON error messages now provide more information.
-- Issue #10818: Remove the Tk GUI and the serve() function of the pydoc module,
- pydoc -g has been deprecated in Python 3.2 and it has a new enhanced web
- server.
+- Issue #16828: Fix error incorrectly raised by bz2.compress(b'') and
+ bz2.BZ2Compressor.compress(b''). Initial patch by Martin Packman.
-- Issue #1441530: In imaplib, read the data in one chunk to speed up large
- reads and simplify code.
+- Issue #16833: In http.client.HTTPConnection, do not concatenate the request
+ headers and body when the payload exceeds 16 KB, since it can consume more
+ memory for no benefit. Patch by Benno Leslie.
-- Issue #12070: Fix the Makefile parser of the sysconfig module to handle
- correctly references to "bogus variable" (e.g. "prefix=$/opt/python").
+- Issue #16541: tk_setPalette() now works with keyword arguments.
-- Issue #12100: Don't reset incremental encoders of CJK codecs at each call to
- their encode() method anymore, but continue to call the reset() method if the
- final argument is True.
+- Issue #16820: In configparser, `parser.popitem()` no longer raises ValueError.
+ This makes `parser.clean()` work correctly.
-- Issue #12049: Add RAND_bytes() and RAND_pseudo_bytes() functions to the ssl
- module.
+- Issue #16820: In configparser, ``parser['section'] = {}`` now preserves
+ section order within the parser. This makes `parser.update()` preserve section
+ order as well.
-- Issue #6501: os.device_encoding() returns None on Windows if the application
- has no console.
+- Issue #16820: In configparser, ``parser['DEFAULT'] = {}`` now correctly
+ clears previous values stored in the default section. Same goes for
+ ``parser.update({'DEFAULT': {}})``.
-- Issue #12105: Add O_CLOEXEC to the os module.
+- Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy.
-- Issue #12079: Decimal('Infinity').fma(Decimal('0'), (3.91224318126786e+19+0j))
- now raises TypeError (reflecting the invalid type of the 3rd argument) rather
- than Decimal.InvalidOperation.
+- Issue #16787: Increase asyncore and asynchat default output buffers size, to
+ decrease CPU usage and increase throughput.
-- Issue #12124: zipimport doesn't keep a reference to zlib.decompress() anymore
- to be able to unload the module.
+- Issue #10527: make multiprocessing use poll() instead of select() if available.
-- Add the packaging module, an improved fork of distutils (also known as
- distutils2).
+- Issue #16688: Now regexes contained backreferences correctly work with
+ non-ASCII strings. Patch by Matthew Barnett.
-- Issue #12065: connect_ex() on an SSL socket now returns the original errno
- when the socket's timeout expires (it used to return None).
+- Issue #16486: Make aifc files act as context managers.
-- Issue #8809: The SMTP_SSL constructor and SMTP.starttls() now support
- passing a ``context`` argument pointing to an ssl.SSLContext instance.
- Patch by Kasun Herath.
+- Issue #16485: Now file descriptors are closed if file header patching failed
+ on closing an aifc file.
-- Issue #9516: Issue #9516: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET
- is set in shell.
+- Issue #16640: Run less code under a lock in sched module.
-- Issue #8650: Make zlib module 64-bit clean. compress(), decompress() and
- their incremental counterparts now raise OverflowError if given an input
- larger than 4GB, instead of silently truncating the input and returning
- an incorrect result.
+- Issue #16165: sched.scheduler.run() no longer blocks a scheduler for other
+ threads.
-- Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
- attribute when called without a max_length argument.
+- Issue #16641: Default values of sched.scheduler.enter() are no longer
+ modifiable.
-- Issue #12062: Fix a flushing bug when doing a certain type of I/O sequence
- on a file opened in read+write mode (namely: reading, seeking a bit forward,
- writing, then seeking before the previous write but still within buffered
- data, and writing again).
+- Issue #16618: Make glob.glob match consistently across strings and bytes
+ regarding leading dots. Patch by Serhiy Storchaka.
-- Issue #9971: Write an optimized implementation of BufferedReader.readinto().
- Patch by John O'Connor.
+- Issue #16788: Add samestat to Lib/ntpath.py
-- Issue #11799: urllib.request Authentication Handlers will raise a ValueError
- when presented with an unsupported Authentication Scheme. Patch contributed
- by Yuval Greenfield.
+- Issue #16713: Parsing of 'tel' urls using urlparse separates params from
+ path.
-- Issue #10419, #6011: build_scripts command of distutils handles correctly
- non-ASCII path (path to the Python executable). Open and write the script in
- binary mode, but ensure that the shebang is decodable from UTF-8 and from the
- encoding of the script.
+- Issue #16443: Add docstrings to regular expression match objects.
+ Patch by Anton Kasyanov.
-- Issue #8498: In socket.accept(), allow to specify 0 as a backlog value in
- order to accept exactly one connection. Patch by Daniel Evers.
+- Issue #15701: Fix HTTPError info method call to return the headers information.
-- Issue #12011: signal.signal() and signal.siginterrupt() raise an OSError,
- instead of a RuntimeError: OSError has an errno attribute.
+- Issue #16752: Add a missing import to modulefinder. Patch by Berker Peksag.
-- Issue #3709: add a flush_headers method to BaseHTTPRequestHandler, which
- manages the sending of headers to output stream and flushing the internal
- headers buffer. Patch contribution by Andrew Schaaf
+- Issue #16646: ftplib.FTP.makeport() might lose socket error details.
+ (patch by Serhiy Storchaka)
-- Issue #11743: Rewrite multiprocessing connection classes in pure Python.
+- Issue #16626: Fix infinite recursion in glob.glob() on Windows when the
+ pattern contains a wildcard in the drive or UNC path. Patch by Serhiy
+ Storchaka.
-- Issue #11164: Stop trying to use _xmlplus in the xml module.
+- Issue #15783: Except for the number methods, the C version of decimal now
+ supports all None default values present in decimal.py. These values were
+ largely undocumented.
-- Issue #11888: Add log2 function to math module. Patch written by Mark
- Dickinson.
+- Issue #11175: argparse.FileType now accepts encoding and errors
+ arguments. Patch by Lucas Maystre.
-- Issue #12012: ssl.PROTOCOL_SSLv2 becomes optional.
+- Issue #16488: epoll() objects now support the `with` statement. Patch
+ by Serhiy Storchaka.
-- Issue #8407: The signal handler writes the signal number as a single byte
- instead of a nul byte into the wakeup file descriptor. So it is possible to
- wait more than one signal and know which signals were raised.
+- Issue #16298: In HTTPResponse.read(), close the socket when there is no
+ Content-Length and the incoming stream is finished. Patch by Eran
+ Rundstein.
-- Issue #8407: Add pthread_kill(), sigpending() and sigwait() functions to the
- signal module.
+- Issue #16049: Add abc.ABC class to enable the use of inheritance to create
+ ABCs, rather than the more cumbersome metaclass=ABCMeta. Patch by Bruno
+ Dupuis.
-- Issue #11927: SMTP_SSL now uses port 465 by default as documented. Patch
- by Kasun Herath.
+- Expose the TCP_FASTOPEN and MSG_FASTOPEN flags in socket when they're
+ available.
-- Issue #12002: ftplib's abort() method raises TypeError.
+- Issue #15701: Add a .headers attribute to urllib.error.HTTPError. Patch
+ contributed by Berker Peksag.
-- Issue #11916: Add a number of MacOSX specific definitions to the errno module.
- Patch by Pierre Carrier.
+- Issue #15872: Fix 3.3 regression introduced by the new fd-based shutil.rmtree
+ that caused it to not ignore certain errors when ignore_errors was set.
+ Patch by Alessandro Moura and Serhiy Storchaka.
-- Issue #11999: fixed sporadic sync failure mailbox.Maildir due to its trying to
- detect mtime changes by comparing to the system clock instead of to the
- previous value of the mtime.
+- Issue #16248: Disable code execution from the user's home directory by
+ tkinter when the -E flag is passed to Python. Patch by Zachary Ware.
-- Issue #11072: added MLSD command (RFC-3659) support to ftplib.
+- Issue #13390: New function :func:`sys.getallocatedblocks()` returns the
+ number of memory blocks currently allocated.
-- Issue #8808: The IMAP4_SSL constructor now allows passing an SSLContext
- parameter to control parameters of the secure channel. Patch by Sijin
- Joseph.
+- Issue #16628: Fix a memory leak in ctypes.resize().
-- ntpath.samefile failed to notice that "a.txt" and "A.TXT" refer to the same
- file on Windows XP. As noticed in issue #10684.
+- Issue #13614: Fix setup.py register failure with invalid rst in description.
+ Patch by Julien Courteau and Pierre Paul Lefebvre.
-- Issue #12000: When a SSL certificate has a subjectAltName without any
- dNSName entry, ssl.match_hostname() should use the subject's commonName.
- Patch by Nicolas Bareil.
+- Issue #13512: Create ~/.pypirc securely (CVE-2011-4944). Initial patch by
+ Philip Jenvey, tested by Mageia and Debian.
-- Issue #10775: assertRaises, assertRaisesRegex, assertWarns, and
- assertWarnsRegex now accept a keyword argument 'msg' when used as context
- managers. Initial patch by Winston Ewert.
+- Issue #7719: Make distutils ignore ``.nfs*`` files instead of choking later
+ on. Initial patch by SilentGhost and Jeff Ramnani.
-- Issue #10684: shutil.move used to delete a folder on case insensitive
- filesystems when the source and destination name where the same except
- for the case.
+- Issue #13120: Allow to call pdb.set_trace() from thread.
+ Patch by Ilya Sandler.
-- Issue #11647: objects created using contextlib.contextmanager now support
- more than one call to the function when used as a decorator. Initial patch
- by Ysj Ray.
+- Issue #16585: Make CJK encoders support error handlers that return bytes per
+ PEP 383.
-- Issue #11930: Removed deprecated time.accept2dyear variable.
- Removed year >= 1000 restriction from datetime.strftime.
+- Issue #10182: The re module doesn't truncate indices to 32 bits anymore.
+ Patch by Serhiy Storchaka.
-- logging: don't define QueueListener if Python has no thread support.
+- Issue #16333: use (",", ": ") as default separator in json when indent is
+ specified, to avoid trailing whitespace. Patch by Serhiy Storchaka.
-- functools.cmp_to_key() now works with collections.Hashable().
+- Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous
+ list() calls aren't added to filter(), map(), and zip() which are directly
+ passed enumerate().
-- Issue #11277: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get
- around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.
+- Issue #16464: Reset the Content-Length header when a urllib Request is reused
+ with new data.
-- Issue #8407: Add signal.pthread_sigmask() function to fetch and/or change the
- signal mask of the calling thread.
+- Issue #12848: The pure Python pickle implementation now treats object
+ lengths as unsigned 32-bit integers, like the C implementation does.
+ Patch by Serhiy Storchaka.
-- Issue #11858: configparser.ExtendedInterpolation expected lower-case section
- names.
+- Issue #16423: urllib.request now has support for ``data:`` URLs. Patch by
+ Mathias Panzenböck.
-- Issue #11324: ConfigParser(interpolation=None) now works correctly.
+- Issue #4473: Add a POP3.stls() to switch a clear-text POP3 session into
+ an encrypted POP3 session, on supported servers. Patch by Lorenzo Catucci.
-- Issue #11811: ssl.get_server_certificate() is now IPv6-compatible. Patch
- by Charles-François Natali.
+- Issue #4473: Add a POP3.capa() method to query the capabilities advertised
+ by the POP3 server. Patch by Lorenzo Catucci.
-- Issue #11763: don't use difflib in TestCase.assertMultiLineEqual if the
- strings are too long.
+- Issue #4473: Ensure the socket is shutdown cleanly in POP3.close().
+ Patch by Lorenzo Catucci.
-- Issue #11236: getpass.getpass responds to ctrl-c or ctrl-z on terminal.
+- Issue #16522: added FAIL_FAST flag to doctest.
-- Issue #11856: Speed up parsing of JSON numbers.
+- Issue #15627: Add the importlib.abc.InspectLoader.source_to_code() method.
-- Issue #11005: threading.RLock()._release_save() raises a RuntimeError if the
- lock was not acquired.
+- Issue #16408: Fix file descriptors not being closed in error conditions
+ in the zipfile module. Patch by Serhiy Storchaka.
-- Issue #11258: Speed up ctypes.util.find_library() under Linux by a factor
- of 5 to 10. Initial patch by Jonas H.
+- Issue #14631: Add a new :class:`weakref.WeakMethod` to simulate weak
+ references to bound methods.
-- Issue #11382: Trivial system calls, such as dup() or pipe(), needn't
- release the GIL. Patch by Charles-François Natali.
+- Issue #16469: Fix exceptions from float -> Fraction and Decimal -> Fraction
+ conversions for special values to be consistent with those for float -> int
+ and Decimal -> int. Patch by Alexey Kachayev.
-- Issue #11223: Add threading._info() function providing informations about
- the thread implementation.
+- Issue #16481: multiprocessing no longer leaks process handles on Windows.
-- Issue #11731: simplify/enhance email parser/generator API by introducing
- policy objects.
+- Issue #12428: Add a pure Python implementation of functools.partial().
+ Patch by Brian Thorne.
-- Issue #11768: The signal handler of the signal module only calls
- Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or
- parallel calls. PyErr_SetInterrupt() writes also into the wake up file.
+- Issue #16140: The subprocess module no longer double closes its child
+ subprocess.PIPE parent file descriptors on child error prior to exec().
-- Issue #11492: fix several issues with header folding in the email package.
+- Remove a bare print to stdout from the subprocess module that could have
+ happened if the child process wrote garbage to its pre-exec error pipe.
-- Issue #11852: Add missing imports and update tests.
+- The subprocess module now raises its own SubprocessError instead of a
+ RuntimeError in various error situations which should not normally happen.
-- Issue #11875: collections.OrderedDict's __reduce__ was temporarily
- mutating the object instead of just working on a copy.
+- Issue #16327: The subprocess module no longer leaks file descriptors
+ used for stdin/stdout/stderr pipes to the child when fork() fails.
-- Issue #11467: Fix urlparse behavior when handling urls which contains scheme
- specific part only digits. Patch by Santoso Wijaya.
+- Issue #14396: Handle the odd rare case of waitpid returning 0 when not
+ expected in subprocess.Popen.wait().
-- collections.Counter().copy() now works correctly for subclasses.
+- Issue #16411: Fix a bug where zlib.decompressobj().flush() might try to access
+ previously-freed memory. Patch by Serhiy Storchaka.
-- Issue #11474: Fix the bug with url2pathname() handling of '/C|/' on Windows.
- Patch by Santoso Wijaya.
+- Issue #16357: fix calling accept() on a SSLSocket created through
+ SSLContext.wrap_socket(). Original patch by Jeff McNeil.
-- Issue #11684: complete email.parser bytes API by adding BytesHeaderParser.
+- Issue #16409: The reporthook callback made by the legacy
+ urllib.request.urlretrieve API now properly supplies a constant non-zero
+ block_size as it did in Python 3.2 and 2.7. This matches the behavior of
+ urllib.request.URLopener.retrieve.
-- The bz2 module now handles 4GiB+ input buffers correctly.
+- Issue #16431: Use the type information when constructing a Decimal subtype
+ from a Decimal argument.
-- Issue #9233: Fix json.loads('{}') to return a dict (instead of a list), when
- _json is not available.
+- Issue #15641: Clean up deprecated classes from importlib
+ Patch by Taras Lyapun.
-- Issue #11830: Remove unnecessary introspection code in the decimal module.
+- Issue #16350: zlib.decompressobj().decompress() now accumulates data from
+ successive calls after EOF in unused_data, instead of only saving the argument
+ to the last call. decompressobj().flush() now correctly sets unused_data and
+ unconsumed_tail. A bug in the handling of MemoryError when setting the
+ unconsumed_tail attribute has also been fixed. Patch by Serhiy Storchaka.
-- Issue #11703: urllib2.geturl() does not return correct url when the original
- url contains #fragment.
+- Issue #12759: sre_parse now raises a proper error when the name of the group
+ is missing. Initial patch by Serhiy Storchaka.
-- Issue #10019: Fixed regression in json module where an indent of 0 stopped
- adding newlines and acted instead like 'None'.
+- Issue #16152: fix tokenize to ignore whitespace at the end of the code when
+ no newline is found. Patch by Ned Batchelder.
-- Issue #11186: pydoc ignores a module if its name contains a surrogate
- character in the index of modules.
+- Issue #16284: Prevent keeping unnecessary references to worker functions
+ in concurrent.futures ThreadPoolExecutor.
-- Issue #11815: Use a light-weight SimpleQueue for the result queue in
- concurrent.futures.ProcessPoolExecutor.
+- Issue #16230: Fix a crash in select.select() when one the lists changes
+ size while iterated on. Patch by Serhiy Storchaka.
-- Issue #5162: Treat services like frozen executables to allow child spawning
- from multiprocessing.forking on Windows.
+- Issue #16228: Fix a crash in the json module where a list changes size
+ while it is being encoded. Patch by Serhiy Storchaka.
-- logging.basicConfig now supports an optional 'handlers' argument taking an
- iterable of handlers to be added to the root logger. Additional parameter
- checks were also added to basicConfig.
+- Issue #16351: New function gc.get_stats() returns per-generation collection
+ statistics.
-- Issue #11814: Fix likely typo in multiprocessing.Pool._terminate().
+- Issue #14897: Enhance error messages of struct.pack and
+ struct.pack_into. Patch by Matti Mäki.
-- Issue #11747: Fix range formatting in difflib.context_diff() and
- difflib.unified_diff().
+- Issue #16316: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions.
+ Patch by Serhiy Storchaka.
-- Issue #8428: Fix a race condition in multiprocessing.Pool when terminating
- worker processes: new processes would be spawned while the pool is being
- shut down. Patch by Charles-François Natali.
+- Issue #12890: cgitb no longer prints spurious <p> tags in text
+ mode when the logdir option is specified.
-- Issue #2650: re.escape() no longer escapes the '_'.
+- Issue #16307: Fix multiprocessing.Pool.map_async not calling its callbacks.
+ Patch by Janne Karila.
-- Issue #11757: select.select() now raises ValueError when a negative timeout
- is passed (previously, a select.error with EINVAL would be raised). Patch
- by Charles-François Natali.
+- Issue #16305: Fix a segmentation fault occurring when interrupting
+ math.factorial.
-- Issue #7311: fix html.parser to accept non-ASCII attribute values.
+- Issue #16116: Fix include and library paths to be correct when building C
+ extensions in venvs.
-- Issue #11605: email.parser.BytesFeedParser was incorrectly converting
- multipart subparts with an 8-bit CTE into unicode instead of preserving the
- bytes.
+- Issue #16245: Fix the value of a few entities in html.entities.html5.
-- Issue #1690608: email.util.formataddr is now RFC 2047 aware: it now has a
- charset parameter that defaults to utf-8 and is used as the charset for RFC
- 2047 encoding when the realname contains non-ASCII characters.
+- Issue #16301: Fix the localhost verification in urllib/request.py for file://
+ urls.
-- Issue #10963: Ensure that subprocess.communicate() never raises EPIPE.
+- Issue #16250: Fix the invocations of URLError which had misplaced filename
+ attribute for exception.
-- Issue #10791: Implement missing method GzipFile.read1(), allowing GzipFile
- to be wrapped in a TextIOWrapper. Patch by Nadeem Vawda.
+- Issue #10836: Fix exception raised when file not found in urlretrieve
+ Initial patch by Ezio Melotti.
-- Issue #11707: Added a fast C version of functools.cmp_to_key().
- Patch by Filip Gruszczyński.
+- Issue #14398: Fix size truncation and overflow bugs in the bz2 module.
-- Issue #11688: Add sqlite3.Connection.set_trace_callback(). Patch by
- Torsten Landschoff.
+- Issue #12692: Fix resource leak in urllib.request when talking to an HTTP
+ server that does not include a ``Connection: close`` header in its responses.
-- Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve
- private keys.
+- Issue #12034: Fix bogus caching of result in check_GetFinalPathNameByHandle.
+ Patch by Atsuo Ishimoto.
-- Issue #5863: Rewrite BZ2File in pure Python, and allow it to accept
- file-like objects using a new ``fileobj`` constructor argument. Patch by
- Nadeem Vawda.
+- Improve performance of `lzma.LZMAFile` (see also issue #16034).
-- unittest.TestCase.assertSameElements has been removed.
+- Issue #16220: wsgiref now always calls close() on an iterable response.
+ Patch by Brent Tubbs.
-- sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not
- called yet: detect bootstrap (startup) issues earlier.
+- Issue #16270: urllib may hang when used for retrieving files via FTP by using
+ a context manager. Patch by Giampaolo Rodola'.
-- Issue #11393: Add the new faulthandler module.
+- Issue #16461: Wave library should be able to deal with 4GB wav files,
+ and sample rate of 44100 Hz.
-- Issue #11618: Fix the timeout logic in threading.Lock.acquire() under Windows.
+- Issue #16176: Properly identify Windows 8 via platform.platform()
-- Removed the 'strict' argument to email.parser.Parser, which has been
- deprecated since Python 2.4.
+- Issue #16088: BaseHTTPRequestHandler's send_error method includes a
+ Content-Length header in it's response now. Patch by Antoine Pitrou.
-- Issue #11256: Fix inspect.getcallargs on functions that take only keyword
- arguments.
+- Issue #16114: The subprocess module no longer provides a misleading error
+ message stating that args[0] did not exist when either the cwd or executable
+ keyword arguments specified a path that did not exist.
-- Issue #11696: Fix ID generation in msilib.
+- Issue #16169: Fix ctypes.WinError()'s confusion between errno and winerror.
-- itertools.accumulate now supports an optional *func* argument for
- a user-supplied binary function.
+- Issue #16110: logging.fileConfig now accepts a pre-initialised ConfigParser
+ instance.
-- Issue #11692: Remove unnecessary demo functions in subprocess module.
+- Issue #1492704: shutil.copyfile() raises a distinct SameFileError now if
+ source and destination are the same file. Patch by Atsuo Ishimoto.
-- Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when
- trying to pack a negative (in-range) integer.
+- Issue #13896: Make shelf instances work with 'with' as context managers.
+ Original patch by Filip Gruszczyński.
-- Issue #11675: multiprocessing.[Raw]Array objects created from an integer size
- are now zeroed on creation. This matches the behaviour specified by the
- documentation.
+- Issue #15417: Add support for csh and fish in venv activation scripts.
-- Issue #7639: Fix short file name generation in bdist_msi
+- Issue #14377: ElementTree.write and some of the module-level functions have
+ a new parameter - *short_empty_elements*. It controls how elements with no
+ contents are emitted.
-- Issue #11635: Don't use polling in worker threads and processes launched by
- concurrent.futures.
+- Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element
+ element_factory (fixes a regression in SimpleTAL).
-- Issue #5845: Automatically read readline configuration to enable completion
- in interactive mode.
+- Issue #9650: List commonly used format codes in time.strftime and
+ time.strptime docsttings. Original patch by Mike Hoy.
-- Issue #6811: Allow importlib to change a code object's co_filename attribute
- to match the path to where the source code currently is, not where the code
- object originally came from.
+- Issue #15452: logging configuration socket listener now has a verify option
+ that allows an application to apply a verification function to the
+ received configuration data before it is acted upon.
-- Issue #8754: Have importlib use the repr of a module name in error messages.
+- Issue #16034: Fix performance regressions in the new `bz2.BZ2File`
+ implementation. Initial patch by Serhiy Storchaka.
-- Issue #11591: Prevent "import site" from modifying sys.path when python
- was started with -S.
+- `pty.spawn()` now returns the child process status returned by `os.waitpid()`.
-- collections.namedtuple() now adds a _source attribute to the generated
- class. This make the source more accessible than the outdated
- "verbose" option which prints to stdout but doesn't make the source
- string available.
+- Issue #15756: `subprocess.poll()` now properly handles `errno.ECHILD` to
+ return a returncode of 0 when the child has already exited or cannot be waited
+ on.
-- Issue #11371: Mark getopt error messages as localizable. Patch by Filip
- Gruszczyński.
+- Issue #15323: Improve failure message of `Mock.assert_called_once_with()`.
-- Issue #11333: Add __slots__ to collections ABCs.
+- Issue #16064: ``unittest -m`` claims executable is "python", not "python3".
-- Issue #11628: cmp_to_key generated class should use __slots__.
+- Issue #12376: Pass on parameters in `TextTestResult.__init__()` super call.
-- Issue #11666: let help() display named tuple attributes and methods
- that start with a leading underscore.
+- Issue #15222: Insert blank line after each message in mbox mailboxes.
-- Issue #11662: Make urllib and urllib2 ignore redirections if the
- scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).
+- Issue #16013: Fix `csv.Reader` parsing issue with ending quote characters.
+ Patch by Serhiy Storchaka.
-- Issue #5537: Fix time2isoz() and time2netscape() functions of
- httplib.cookiejar for expiration year greater than 2038 on 32-bit systems.
+- Issue #15421: Fix an OverflowError in `Calendar.itermonthdates()` after
+ `datetime.MAXYEAR`. Patch by Cédric Krier.
-- Issue #4391: Use proper gettext plural forms in optparse.
+- Issue #16112: platform.architecture does not correctly escape argument to
+ /usr/bin/file. Patch by David Benjamin.
-- Issue #11127: Raise a TypeError when trying to pickle a socket object.
+- Issue #15970: `xml.etree.ElementTree` now serializes correctly the empty HTML
+ elements 'meta' and 'param'.
-- Issue #11563: ``Connection: close`` header is sent by requests using URLOpener
- class which helps in closing of sockets after connection is over. Patch
- contributions by Jeff McNeil and Nadeem Vawda.
+- Issue #15842: The `SocketIO.{readable,writable,seekable}` methods now raise
+ ValueError when the file-like object is closed. Patch by Alessandro Moura.
-- Issue #11459: A ``bufsize`` value of 0 in subprocess.Popen() really creates
- unbuffered pipes, such that select() works properly on them.
+- Issue #15876: Fix a refleak in the `curses` module: window.encoding.
-- Issue #5421: Fix misleading error message when one of socket.sendto()'s
- arguments has the wrong type. Patch by Nikita Vetoshkin.
+- Issue #15881: Fix `atexit` hook in `multiprocessing`. Original patch by Chris
+ McDonough.
-- Issue #10812: Add some extra posix functions to the os module.
+- Issue #15841: The readable(), writable() and seekable() methods of
+ `io.BytesIO` and `io.StringIO` objects now raise ValueError when the object
+ has been closed. Patch by Alessandro Moura.
-- Issue #10979: unittest stdout buffering now works with class and module
- setup and teardown.
+- Issue #15447: Use `subprocess.DEVNULL` in webbrowser, instead of opening
+ `os.devnull` explicitly and leaving it open.
-- Issue #11243: fix the parameter querying methods of Message to work if
- the headers contain un-encoded non-ASCII data.
+- Issue #15509: `webbrowser.UnixBrowser` no longer passes empty arguments to
+ Popen when ``%action`` substitutions produce empty strings.
-- Issue #11401: fix handling of headers with no value; this fixes a regression
- relative to Python2 and the result is now the same as it was in Python2.
+- Issue #12776, issue #11839: Call `argparse` type function (specified by
+ add_argument) only once. Before, the type function was called twice in the
+ case where the default was specified and the argument was given as well. This
+ was especially problematic for the FileType type, as a default file would
+ always be opened, even if a file argument was specified on the command line.
-- Issue #9298: base64 bodies weren't being folded to line lengths less than 78,
- which was a regression relative to Python2. Unlike Python2, the last line
- of the folded body now ends with a carriage return.
+- Issue #15906: Fix a regression in argparse caused by the preceding change,
+ when ``action='append'``, ``type='str'`` and ``default=[]``.
-- Issue #11560: shutil.unpack_archive now correctly handles the format
- parameter. Patch by Evan Dandrea.
+- Issue #16113: Added sha3 module based on the Keccak reference implementation
+ 3.2. The `hashlib` module has four additional hash algorithms: `sha3_224`,
+ `sha3_256`, `sha3_384` and `sha3_512`. As part of the patch some common
+ code was moved from _hashopenssl.c to hashlib.h.
-- Issue #5870: Add `subprocess.DEVNULL` constant.
+- ctypes.call_commethod was removed, since its only usage was in the defunct
+ samples directory.
-- Issue #11133: fix two cases where inspect.getattr_static can trigger code
- execution. Patch by Andreas Stührk.
+- Issue #16692: Added TLSv1.1 and TLSv1.2 support for the ssl modules.
-- Issue #11569: use absolute path to the sysctl command in multiprocessing to
- ensure that it will be found regardless of the shell PATH. This ensures
- that multiprocessing.cpu_count works on default installs of MacOSX.
+- Issue #16832: add abc.get_cache_token() to expose cache validity checking
+ support in ABCMeta.
-- Issue #11501: disutils.archive_utils.make_zipfile no longer fails if zlib is
- not installed. Instead, the zipfile.ZIP_STORED compression is used to create
- the ZipFile. Patch by Natalia B. Bidart.
+IDLE
+----
-- Issue #11289: `smtp.SMTP` class is now a context manager so it can be used
- in a `with` statement. Contributed by Giampaolo Rodola.
+- Issue #18429: Format / Format Paragraph, now works when comment blocks
+ are selected. As with text blocks, this works best when the selection
+ only includes complete lines.
-- Issue #11554: Fixed support for Japanese codecs; previously the body output
- encoding was not done if euc-jp or shift-jis was specified as the charset.
+- Issue #18226: Add docstrings and unittests for FormatParagraph.py.
+ Original patches by Todd Rovito and Phil Webster.
-- Issue #11407: `TestCase.run` returns the result object used or created.
- Contributed by Janathan Hartley.
+- Issue #18279: Format - Strip trailing whitespace no longer marks a file as
+ changed when it has not been changed. This fix followed the addition of a
+ test file originally written by Phil Webster (the issue's main goal).
-- Issue #11500: Fixed a bug in the OS X proxy bypass code for fully qualified
- IP addresses in the proxy exception list.
+- Issue #7136: In the Idle File menu, "New Window" is renamed "New File".
+ Patch by Tal Einat, Roget Serwy, and Todd Rovito.
-- Issue #11491: dbm.error is no longer raised when dbm.open is called with
- the "n" as the flag argument and the file exists. The behavior matches
- the documentation and general logic.
+- Remove dead imports of imp.
-- Issue #1162477: Postel Principle adjustment to email date parsing: handle the
- fact that some non-compliant MUAs use '.' instead of ':' in time specs.
+- Issue #18196: Avoid displaying spurious SystemExit tracebacks.
-- Issue #11131: Fix sign of zero in decimal.Decimal plus and minus
- operations when the rounding mode is ROUND_FLOOR.
+- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition.
-- Issue #9935: Speed up pickling of instances of user-defined classes.
+- Issue #17511: Keep IDLE find dialog open after clicking "Find Next".
+ Original patch by Sarah K.
-- Issue #5622: Fix curses.wrapper to raise correct exception if curses
- initialization fails.
+- Issue #18055: Move IDLE off of imp and on to importlib.
-- Issue #11408: In threading.Lock.acquire(), only call gettimeofday() when
- really necessary. Patch by Charles-François Natali.
+- Issue #15392: Create a unittest framework for IDLE.
+ Initial patch by Rajagopalasarma Jayakrishnan.
+ See Lib/idlelib/idle_test/README.txt for how to run Idle tests.
-- Issue #11391: Writing to a mmap object created with
- ``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a
- TypeError. Patch by Charles-François Natali.
+- Issue #14146: Highlight source line while debugging on Windows.
-- Issue #9795: add context manager protocol support for nntplib.NNTP class.
+- Issue #17838: Allow sys.stdin to be reassigned.
-- Issue #11306: mailbox in certain cases adapts to an inability to open
- certain files in read-write mode. Previously it detected this by
- checking for EACCES, now it also checks for EROFS.
+- Issue #13495: Avoid loading the color delegator twice in IDLE.
-- Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors
- on accept(), send() and recv().
+- Issue #17798: Allow IDLE to edit new files when specified on command line.
-- Issue #11377: Deprecate platform.popen() and reimplement it with os.popen().
+- Issue #14735: Update IDLE docs to omit "Control-z on Windows".
-- Issue #8513: On UNIX, subprocess supports bytes command string.
+- Issue #17532: Always include Options menu for IDLE on OS X.
+ Patch by Guilherme Simões.
-- Issue #10866: Add socket.sethostname(). Initial patch by Ross Lagerwall.
+- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit().
-- Issue #11140: Lock.release() now raises a RuntimeError when attempting
- to release an unacquired lock, as claimed in the threading documentation.
- The _thread.error exception is now an alias of RuntimeError. Patch by
- Filip Gruszczyński. Patch for _dummy_thread by Aymeric Augustin.
+- Issue #17657: Show full Tk version in IDLE's about dialog.
+ Patch by Todd Rovito.
-- Issue #8594: ftplib now provides a source_address parameter to specify which
- (address, port) to bind to before connecting.
+- Issue #17613: Prevent traceback when removing syntax colorizer in IDLE.
-- Issue #11326: Add the missing connect_ex() implementation for SSL sockets,
- and make it work for non-blocking connects.
+- Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE.
-- Issue #11297: Add collections.ChainMap().
+- Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box.
-- Issue #10755: Add the posix.flistdir() function. Patch by Ross Lagerwall.
+- Issue #17625: In IDLE, close the replace dialog after it is used.
-- Issue #4761: Add the ``*at()`` family of functions (openat(), etc.) to the
- posix module. Patch by Ross Lagerwall.
+- Issue #14254: IDLE now handles readline correctly across shell restarts.
-- Issue #7322: Trying to read from a socket's file-like object after a timeout
- occurred now raises an error instead of silently losing data.
+- Issue #17614: IDLE no longer raises exception when quickly closing a file.
-- Issue #11291: poplib.POP no longer suppresses errors on quit().
+- Issue #6698: IDLE now opens just an editor window when configured to do so.
-- Issue #11177: asyncore's create_socket() arguments can now be omitted.
+- Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer
+ raises an exception.
-- Issue #6064: Add a ``daemon`` keyword argument to the threading.Thread
- and multiprocessing.Process constructors in order to override the
- default behaviour of inheriting the daemonic property from the current
- thread/process.
+- Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo.
-- Issue #10956: Buffered I/O classes retry reading or writing after a signal
- has arrived and the handler returned successfully.
+- Issue #17114: IDLE now uses non-strict config parser.
-- Issue #10784: New os.getpriority() and os.setpriority() functions.
+- Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase
+ interface and support all mandatory methods and properties.
-- Issue #11114: Fix catastrophic performance of tell() on text files (up
- to 1000x faster in some cases). It is still one to two order of magnitudes
- slower than binary tell().
+- Issue #5066: Update IDLE docs. Patch by Todd Rovito.
-- Issue #10882: Add os.sendfile function.
+- Issue #16829: IDLE printing no longer fails if there are spaces or other
+ special characters in the file path.
-- Issue #10868: Allow usage of the register method of an ABC as a class
- decorator.
+- Issue #16491: IDLE now prints chained exception tracebacks.
-- Issue #11224: Fixed a regression in tarfile that affected the file-like
- objects returned by TarFile.extractfile() regarding performance, memory
- consumption and failures with the stream interface.
+- Issue #16819: IDLE method completion now correctly works for bytes literals.
-- Issue #10924: Adding salt and Modular Crypt Format to crypt library.
- Moved old C wrapper to _crypt, and added a Python wrapper with
- enhanced salt generation and simpler API for password generation.
+- Issue #16504: IDLE now catches SyntaxErrors raised by tokenizer. Patch by
+ Roger Serwy.
-- Issue #11074: Make 'tokenize' so it can be reloaded.
+- Issue #16511: Use default IDLE width and height if config param is not valid.
+ Patch Serhiy Storchaka.
-- Issue #11085: Moved collections abstract base classes into a separate
- module called collections.abc, following the pattern used by importlib.abc.
- For backwards compatibility, the names are imported into the collections
- module.
+- Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu
+ Patch by Todd Rovito.
-- Issue #4681: Allow mmap() to work on file sizes and offsets larger than
- 4GB, even on 32-bit builds. Initial patch by Ross Lagerwall, adapted for
- 32-bit Windows.
+- Issue #16123: IDLE - deprecate running without a subprocess.
+ Patch by Roger Serwy.
-- Issue #11169: compileall module uses repr() to format filenames and paths to
- escape surrogate characters and show spaces.
+Tests
+-----
-- Issue #11089: Fix performance issue limiting the use of ConfigParser()
- with large config files.
+- Issue #1666318: Add a test that shutil.copytree() retains directory
+ permissions. Patch by Catherine Devlin.
-- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers
- larger than 4GB. Patch by Nadeem Vawda.
+- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json
+ and make them discoverable by unittest. Patch by Zachary Ware.
-- Issue #11388: Added a clear() method to MutableSequence
+- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).
-- Issue #11174: Add argparse.MetavarTypeHelpFormatter, which uses type names
- for the names of optional and positional arguments in help messages.
+- Issue #18396: Fix spurious test failure in test_signal on Windows when
+ faulthandler is enabled (Patch by Jeremy Kloth)
-- Issue #9348: Raise an early error if argparse nargs and metavar don't match.
+- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess.
-- Issue #9026: Fix order of argparse sub-commands in help messages.
+- Issue #15415: Add new temp_dir() and change_cwd() context managers to
+ test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek.
-- Issue #9347: Fix formatting for tuples in argparse type= error messages.
+- Issue #15494: test.support is now a package rather than a module (Initial
+ patch by Indra Talip)
-- Issue #12191: Added shutil.chown() to change user and/or group owner of a
- given path also specifying their names.
+- Issue #17944: test_zipfile now discoverable and uses subclassing to
+ generate tests for different compression types. Fixed a bug with skipping
+ some tests due to use of exhausted iterators.
-- Issue #13988: The _elementtree accelerator is used whenever available.
- Now xml.etree.cElementTree becomes a deprecated alias to ElementTree.
+- Issue #18266: test_largefile now works with unittest test discovery and
+ supports running only selected tests. Patch by Zachary Ware.
-Build
------
+- Issue #17767: test_locale now works with unittest test discovery.
+ Original patch by Zachary Ware.
-- Issue #6807: Run msisupport.mak earlier.
+- Issue #18375: Assume --randomize when --randseed is used for running the
+ testsuite.
-- Issue #10580: Minor grammar change in Windows installer.
+- Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé.
-- Issue #13326: Clean __pycache__ directories correctly on OpenBSD.
+- Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds
+ in ASN1_TIME fields.
-- PEP 393: the configure option --with-wide-unicode is removed.
+- Issue #18094: test_uuid no longer reports skipped tests as passed.
-- Issue #12852: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008
- functions on OpenBSD (e.g. fdopendir).
+- Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't
+ accidentally hang.
-- Issue #11863: Remove support for legacy systems deprecated in Python 3.2
- (following PEP 11). These systems are systems using Mach C Threads,
- SunOS lightweight processes, GNU pth threads and IRIX threads.
+- Issue #17833: Fix test_gdb failures seen on machines where debug symbols
+ for glibc are available (seen on PPC64 Linux).
-- Issue #8746: Correct faulty configure checks so that os.chflags() and
- os.lchflags() are once again built on systems that support these
- functions (BSD and OS X). Also add new stat file flags for OS X
- (UF_HIDDEN and UF_COMPRESSED).
+- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython.
+ Initial patch by Dino Viehland.
-- Issue #10645: Installing Python no longer creates a
- Python-X.Y.Z-pyX.Y.egg-info file in the lib-dynload directory.
+- Issue #11078: test___all__ now checks for duplicates in __all__.
+ Initial patch by R. David Murray.
-- Do not accidentally include the directory containing sqlite.h twice when
- building sqlite3.
+- Issue #17712: Fix test_gdb failures on Ubuntu 13.04.
-- Issue #11217: For 64-bit/32-bit Mac OS X universal framework builds,
- ensure "make install" creates symlinks in --prefix bin for the "-32"
- files in the framework bin directory like the installer does.
+- Issue #17835: Fix test_io when the default OS pipe buffer size is larger
+ than one million bytes.
-- Issue #11347: Use --no-as-needed when linking libpython3.so.
+- Issue #17065: Use process-unique key for winreg tests to avoid failures if
+ test is run multiple times in parallel (eg: on a buildbot host).
-- Issue #11411: Fix 'make DESTDIR=' with a relative destination.
+- Issue #12820: add tests for the xml.dom.minicompat module.
+ Patch by John Chandler and Phil Connell.
-- Issue #11268: Prevent Mac OS X Installer failure if Documentation
- package had previously been installed.
+- Issue #17691: test_univnewlines now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2.
+- Issue #17790: test_set now works with unittest test discovery.
+ Patch by Zachary Ware.
-IDLE
-----
+- Issue #17789: test_random now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #14409: IDLE now properly executes commands in the Shell window
- when it cannot read the normal config files on startup and
- has to use the built-in default key bindings.
- There was previously a bug in one of the defaults.
+- Issue #17779: test_osx_env now works with unittest test discovery.
+ Patch by Zachary Ware.
-- IDLE can be launched as python -m idlelib
+- Issue #17766: test_iterlen now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #3573: IDLE hangs when passing invalid command line args
- (directory(ies) instead of file(s)) (Patch by Guilherme Polo)
+- Issue #17690: test_time now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #14200: IDLE shell crash on printing non-BMP unicode character.
+- Issue #17692: test_sqlite now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #5219: Prevent event handler cascade in IDLE.
+- Issue #11995: test_pydoc doesn't import all sys.path modules anymore.
-- Issue #964437: Make IDLE help window non-modal.
- Patch by Guilherme Polo and Roger Serwy.
+- Issue #17448: test_sax now skips if there are no xml parsers available
+ instead of raising an ImportError.
-- Issue #13933: IDLE auto-complete did not work with some imported
- module, like hashlib. (Patch by Roger Serwy)
+- Issue #11420: make test suite pass with -B/DONTWRITEBYTECODE set.
+ Initial patch by Thomas Wouters.
-- Issue #13506: Add '' to path for IDLE Shell when started and restarted with Restart Shell.
- Original patches by Marco Scataglini and Roger Serwy.
+- Issue #10652: make tcl/tk tests run after __all__ test, patch by
+ Zachary Ware.
-- Issue #4625: If IDLE cannot write to its recent file or breakpoint files,
- display a message popup and continue rather than crash. Original patch by
- Roger Serwy.
+- Issue #11963: remove human verification from test_parser and test_subprocess.
-- Issue #8641: Update IDLE 3 syntax coloring to recognize b".." and not u"..".
- Patch by Tal Einat.
+- Issue #11732: add a new suppress_crash_popup() context manager to test.support
+ that disables crash popups on Windows and use it in test_faulthandler and
+ test_capi.
-- Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart.
- (Patch by Roger Serwy)
+- Issue #13898: test_ssl no longer prints a spurious stack trace on Ubuntu.
-- Issue #9871: Prevent IDLE 3 crash when given byte stings
- with invalid hex escape sequences, like b'\x0'.
- (Original patch by Claudiu Popa.)
+- Issue #17283: Share code between `__main__.py` and `regrtest.py` in
+ `Lib/test`.
-- Issue #12636: IDLE reads the coding cookie when executing a Python script.
+- Issue #17249: convert a test in test_capi to use unittest and reap threads.
-- Issue #12540: Prevent zombie IDLE processes on Windows due to changes
- in os.kill().
+- Issue #17107: Test client-side SNI support in urllib.request thanks to
+ the new server-side SNI support in the ssl module. Initial patch by
+ Daniel Black.
-- Issue #12590: IDLE editor window now always displays the first line
- when opening a long file. With Tk 8.5, the first line was hidden.
+- Issue #17041: Fix testing when Python is configured with the
+ --without-doc-strings.
-- Issue #11088: don't crash when using F5 to run a script in IDLE on MacOSX
- with Tk 8.5.
+- Issue #16923: Fix ResourceWarnings in test_ssl.
-- Issue #1028: Tk returns invalid Unicode null in %A: UnicodeDecodeError.
- With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused
- IDLE to exit. Converted to valid Unicode null in PythonCmd().
+- Issue #15539: Added regression tests for Tools/scripts/pindent.py.
-- Issue #11718: IDLE's open module dialog couldn't find the __init__.py
- file in a package.
+- Issue #17479: test_io now works with unittest test discovery.
+ Patch by Zachary Ware.
-Tools/Demos
------------
+- Issue #17066: test_robotparser now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches.
- Patch by Francisco Martín Brugué.
+- Issue #17334: test_index now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13930: 2to3 is now able to write its converted output files to another
- directory tree as well as copying unchanged files and altering the file
- suffix. See its new -o, -W and --add-suffix options. This makes it more
- useful in many automated code translation workflows.
+- Issue #17333: test_imaplib now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13628: python-gdb.py is now able to retrieve more frames in the Python
- traceback if Python is optimized.
+- Issue #17082: test_dbm* now work with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #11996: libpython (gdb), replace "py-bt" command by "py-bt-full" and
- add a smarter "py-bt" command printing a classic Python traceback.
+- Issue #17079: test_ctypes now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again.
+- Issue #17304: test_hash now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #10639: reindent.py no longer converts newlines and will raise
- an error if attempting to convert a file with mixed newlines.
- "--newline" option added to specify new line character.
+- Issue #17303: test_future* now work with unittest test discovery.
+ Patch by Zachary Ware.
-Extension Modules
------------------
+- Issue #17163: test_file now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in
- non-pydebug builds. Several extension modules now compile cleanly when
- assert()s are enabled in standard builds (-DDEBUG flag).
+- Issue #16925: test_configparser now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13840: The error message produced by ctypes.create_string_buffer
- when given a Unicode string has been fixed.
+- Issue #16918: test_codecs now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #9975: socket: Fix incorrect use of flowinfo and scope_id. Patch by
- Vilmos Nebehaj.
+- Issue #16919: test_crypt now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #7777: socket: Add Reliable Datagram Sockets (PF_RDS) support.
+- Issue #16910: test_bytes, test_unicode, and test_userstring now work with
+ unittest test discovery. Patch by Zachary Ware.
-- Issue #13159: FileIO and BZ2Compressor/BZ2Decompressor now use a linear-time
- buffer growth strategy instead of a quadratic-time one.
+- Issue #16905: test_warnings now works with unittest test discovery.
+ Initial patch by Berker Peksag.
-- Issue #10141: socket: Add SocketCAN (PF_CAN) support. Initial patch by
- Matthias Fuchs, updated by Tiago Gonçalves.
+- Issue #16898: test_bufio now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13070: Fix a crash when a TextIOWrapper caught in a reference cycle
- would be finalized after the reference to its underlying BufferedRWPair's
- writer got cleared by the GC.
+- Issue #16888: test_array now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #12881: ctypes: Fix segfault with large structure field names.
+- Issue #16896: test_asyncore now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13058: ossaudiodev: fix a file descriptor leak on error. Patch by
- Thomas Jarosch.
+- Issue #16897: test_bisect now works with unittest test discovery.
+ Initial patch by Zachary Ware.
-- Issue #13013: ctypes: Fix a reference leak in PyCArrayType_from_ctype.
- Thanks to Suman Saha for finding the bug and providing a patch.
+- Issue #16852: test_genericpath, test_posixpath, test_ntpath, and test_macpath
+ now work with unittest test discovery. Patch by Zachary Ware.
-- Issue #13022: Fix: _multiprocessing.recvfd() doesn't check that
- file descriptor was actually received.
+- Issue #16748: test_heapq now works with unittest test discovery.
-- Issue #1172711: Add 'long long' support to the array module.
- Initial patch by Oren Tirosh and Hirokazu Yamamoto.
+- Issue #10646: Tests rearranged for os.samefile/samestat to check for not
+ just symlinks but also hard links.
-- Issue #12483: ctypes: Fix a crash when the destruction of a callback
- object triggers the garbage collector.
+- Issue #15302: Switch regrtest from using getopt to using argparse.
-- Issue #12950: Fix passing file descriptors in multiprocessing, under
- OpenIndiana/Illumos.
+- Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize
+ options.
-- Issue #12764: Fix a crash in ctypes when the name of a Structure field is not
- a string.
+- Issue #16702: test_urllib2_localnet tests now correctly ignores proxies for
+ localhost tests.
-- Issue #11241: subclasses of ctypes.Array can now be subclassed.
+- Issue #16664: Add regression tests for glob's behaviour concerning entries
+ starting with a ".". Patch by Sebastian Kreft.
-- Issue #9651: Fix a crash when ctypes.create_string_buffer(0) was passed to
- some functions like file.write().
+- Issue #13390: The ``-R`` option to regrtest now also checks for memory
+ allocation leaks, using :func:`sys.getallocatedblocks()`.
-- Issue #10309: Define _GNU_SOURCE so that mremap() gets the proper
- signature. Without this, architectures where sizeof void* != sizeof int are
- broken. Patch given by Hallvard B Furuseth.
+- Issue #16559: Add more tests for the json module, including some from the
+ official test suite at json.org. Patch by Serhiy Storchaka.
-- Issue #12051: Fix segfault in json.dumps() while encoding highly-nested
- objects using the C accelerations.
+- Issue #16661: Fix the `os.getgrouplist()` test by not assuming that it gives
+ the same output as :command:`id -G`.
-- Issue #12017: Fix segfault in json.loads() while decoding highly-nested
- objects using the C accelerations.
+- Issue #16115: Add some tests for the executable argument to
+ subprocess.Popen(). Initial patch by Kushal Das.
-- Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set
- to an instance of the class.
+- Issue #16126: PyErr_Format format mismatch in _testcapimodule.c.
+ Patch by Serhiy Storchaka.
-Tests
------
+- Issue #15304: Fix warning message when `os.chdir()` fails inside
+ `test.support.temp_cwd()`. Patch by Chris Jerdonek.
-- Issue #13125: Silence spurious test_lib2to3 output when in non-verbose mode.
- Patch by Mikhail Novikov.
+- Issue #15802: Fix test logic in `TestMaildir.test_create_tmp()`. Patch by
+ Serhiy Storchaka.
-- Issue #13447: Add a test file to host regression tests for bugs in the
- scripts found in the Tools directory.
+- Issue #15557: Added a test suite for the webbrowser module, thanks to Anton
+ Barkovsky.
-- Issue #10881: Fix test_site failure with OS X framework builds.
+- Issue #16698: Skip posix test_getgroups when built with OS X
+ deployment target prior to 10.6.
-- Issue #13901: Prevent test_distutils failures on OS X with --enable-shared.
+Build
+-----
-- Issue #13862: Fix spurious failure in test_zlib due to runtime/compile time
- minor versions not matching.
+- Issue #16067: Add description into MSI file to replace installer's
+ temporary name.
-- Issue #12804: Fix test_socket and test_urllib2net failures when running tests
- on a system without internet access.
+- Issue #18257: Fix readlink usage in python-config. Install the python
+ version again on Darwin.
-- Issue #13726: Fix the ambiguous -S flag in regrtest. It is -o/--slow for slow
- tests.
+- Issue #18481: Add C coverage reporting with gcov and lcov. A new make target
+ "coverage-report" creates an instrumented Python build, runs unit tests
+ and creates a HTML. The report can be updated with "make coverage-lcov".
-- Issue #11659: Fix ResourceWarning in test_subprocess introduced by #11459.
- Patch by Ben Hayden.
+- Issue #17845: Clarified the message printed when some module are not built.
-- Issue #11577: fix ResourceWarning triggered by improved binhex test coverage
+- Issue #18256: Compilation fix for recent AIX releases. Patch by
+ David Edelsohn.
-- Issue #11509: Significantly increase test coverage of fileinput.
- Patch by Denver Coneybeare at PyCon 2011 Sprints.
+- Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC
+ 4.8.
-- Issue #11689: Fix a variable scoping error in an sqlite3 test
+- Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1
+ on Windows.
-- Issue #13786: Remove unimplemented 'trace' long option from regrtest.py.
+- Issue #17591: Use lowercase filenames when including Windows header files.
+ Patch by Roumen Petrov.
-- Issue #13725: Fix regrtest to recognize the documented -d flag.
- Patch by Erno Tukia.
+- Issue #17550: Fix the --enable-profiling configure switch.
-- Issue #13304: Skip test case if user site-packages disabled (-s or
- PYTHONNOUSERSITE). (Patch by Carl Meyer)
+- Issue #17425: Build with openssl 1.0.1d on Windows.
-- Issue #5661: Add a test for ECONNRESET/EPIPE handling to test_asyncore. Patch
- by Xavier de Gaye.
+- Issue #16754: Fix the incorrect shared library extension on linux. Introduce
+ two makefile macros SHLIB_SUFFIX and EXT_SUFFIX. SO now has the value of
+ SHLIB_SUFFIX again (as in 2.x and 3.1). The SO macro is removed in 3.4.
-- Issue #13218: Fix test_ssl failures on Debian/Ubuntu.
+- Issue #5033: Fix building of the sqlite3 extension module when the
+ SQLite library version has "beta" in it. Patch by Andreas Pelme.
-- Re-enable lib2to3's test_parser.py tests, though with an expected failure
- (see issue #13125).
+- Issue #17228: Fix building without pymalloc.
-- Issue #12656: Add tests for IPv6 and Unix sockets to test_asyncore.
+- Issue #3718: Use AC_ARG_VAR to set MACHDEP in configure.ac.
-- Issue #6484: Add unit tests for mailcap module (patch by Gregory Nofi)
+- Issue #16235: Implement python-config as a shell script.
-- Issue #11651: Improve the Makefile test targets to run more of the test suite
- more quickly. The --multiprocess option is now enabled by default, reducing
- the amount of time needed to run the tests. "make test" and "make quicktest"
- now include some resource-intensive tests, but no longer run the test suite
- twice to check for bugs in .pyc generation. Tools/scripts/run_test.py provides
- an easy platform-independent way to run test suite with sensible defaults.
+- Issue #16769: Remove outdated Visual Studio projects.
-- Issue #12331: The test suite for the packaging module can now run from an
- installed Python.
+- Issue #17031: Fix running regen in cross builds.
-- Issue #12331: The test suite for lib2to3 can now run from an installed
- Python.
+- Issue #3754: fix typo in pthread AC_CACHE_VAL.
-- Issue #12626: In regrtest, allow to filter tests using a glob filter
- with the ``-m`` (or ``--match``) option. This works with all test cases
- using the unittest module. This is useful with long test suites
- such as test_io or test_subprocess.
+- Issue #15484: Fix _PYTHON_PROJECT_BASE for srcdir != builddir builds;
+ use _PYTHON_PROJECT_BASE in distutils/sysconfig.py.
-- Issue #12624: It is now possible to fail after the first failure when
- running in verbose mode (``-v`` or ``-W``), by using the ``--failfast``
- (or ``-G``) option to regrtest. This is useful with long test suites
- such as test_io or test_subprocess.
+- Drop support for Windows 2000 (changeset e52df05b496a).
-- Issue #12587: Correct faulty test file and reference in test_tokenize.
- (Patch by Robert Xiao)
+- Issue #17029: Let h2py search the multiarch system include directory.
-- Issue #12573: Add resource checks for dangling Thread and Process objects.
+- Issue #16953: Fix socket module compilation on platforms with
+ HAVE_BROKEN_POLL. Patch by Jeffrey Armstrong.
-- Issue #12549: Correct test_platform to not fail when OS X returns 'x86_64'
- as the processor type on some Mac systems.
+- Issue #16320: Remove redundant Makefile dependencies for strings and bytes.
-- Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary
- failure in name resolution.
+- Cross compiling needs host and build settings. configure no longer
+ creates a broken PYTHON_FOR_BUILD variable when --build is missing.
-- Issue #11812: Solve transient socket failure to connect to 'localhost'
- in test_telnetlib.py.
+- Fix cross compiling issue in setup.py, ensure that lib_dirs and inc_dirs are
+ defined in cross compiling mode, too.
-- Solved a potential deadlock in test_telnetlib.py. Related to issue #11812.
+- Issue #16836: Enable IPv6 support even if IPv6 is disabled on the build host.
-- Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and
- an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder
- Web site.
+- Issue #16593: Have BSD 'make -s' do the right thing, thanks to Daniel Shahaf
-- Avoid failing in test_urllibnet.test_bad_address when some overzealous
- DNS service (e.g. OpenDNS) resolves a non-existent domain name. The test
- is now skipped instead.
+- Issue #16262: fix out-of-src-tree builds, if mercurial is not installed.
-- Issue #12440: When testing whether some bits in SSLContext.options can be
- reset, check the version of the OpenSSL headers Python was compiled against,
- rather than the runtime version of the OpenSSL library.
+- Issue #15298: ensure _sysconfigdata is generated in build directory, not
+ source directory.
-- Issue #11512: Add a test suite for the cgitb module. Patch by Robbie Clemons.
+- Issue #15833: Fix a regression in 3.3 that resulted in exceptions being
+ raised if importlib failed to write byte-compiled files. This affected
+ attempts to build Python out-of-tree from a read-only source directory.
-- Issue #12497: Install test/data to prevent failures of the various codecmaps
- tests.
+- Issue #15923: Fix a mistake in ``asdl_c.py`` that resulted in a TypeError
+ after 2801bf875a24 (see #15801).
-- Issue #12496: Install test/capath directory to prevent test_connect_capath
- testcase failure in test_ssl.
+- Issue #16135: Remove OS/2 support.
-- Issue #12469: Run wakeup and pending signal tests in a subprocess to run the
- test in a fresh process with only one thread and to not change signal
- handling of the parent process.
+- Issue #15819: Make sure we can build Python out-of-tree from a read-only
+ source directory. (Somewhat related to issue #9860.)
-- Issue #8716: Avoid crashes caused by Aqua Tk on OSX when attempting to run
- test_tk or test_ttk_guionly under a username that is not currently logged
- in to the console windowserver (as may be the case under buildbot or ssh).
+- Issue #15587: Enable Tk high-resolution text rendering on Macs with
+ Retina displays. Applies to Tkinter apps, such as IDLE, on OS X
+ framework builds linked with Cocoa Tk 8.5.
-- Issue #12407: Explicitly skip test_capi.EmbeddingTest under Windows.
+- Issue #17161: make install now also installs a python3 man page.
-- Issue #12400: regrtest -W doesn't rerun the tests twice anymore, but captures
- the output and displays it on failure instead. regrtest -v doesn't print the
- error twice anymore if there is only one error.
+C-API
+-----
-- Issue #12141: Install copies of template C module file so that
- test_build_ext of test_distutils and test_command_build_ext of
- test_packaging are no longer silently skipped when
- run outside of a build directory.
+- Issue #18351: Fix various issues in a function in importlib provided to help
+ PyImport_ExecCodeModuleWithPathnames() (and thus by extension
+ PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()).
-- Issue #8746: Add additional tests for os.chflags() and os.lchflags().
- Patch by Garrett Cooper.
+- Issue #9369: The types of `char*` arguments of PyObject_CallFunction() and
+ PyObject_CallMethod() now changed to `const char*`. Based on patches by
+ Jörg Müller and Lars Buitinck.
-- Issue #10736: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9
- 2.8 + on Mac OS X. (Patch by Ronald Oussoren)
+- Issue #17206: Py_CLEAR(), Py_DECREF(), Py_XINCREF() and Py_XDECREF() now
+ expand their arguments once instead of multiple times. Patch written by Illia
+ Polosukhin.
-- Issue #12057: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2,
- iso2022_kr).
+- Issue #17522: Add the PyGILState_Check() API.
-- Issue #12096: Fix a race condition in test_threading.test_waitfor(). Patch
- written by Charles-François Natali.
+- Issue #17327: Add PyDict_SetDefault.
-- Issue #11614: import __hello__ prints "Hello World!". Patch written by
- Andreas Stührk.
+- Issue #16881: Fix Py_ARRAY_LENGTH macro for GCC < 3.1.
-- Issue #5723: Improve json tests to be executed with and without accelerations.
+- Issue #16505: Remove unused Py_TPFLAGS_INT_SUBCLASS.
-- Issue #12041: Make test_wait3 more robust.
+- Issue #16086: PyTypeObject.tp_flags and PyType_Spec.flags are now unsigned
+ (unsigned long and unsigned int) to avoid an undefined behaviour with
+ Py_TPFLAGS_TYPE_SUBCLASS ((1 << 31). PyType_GetFlags() result type is
+ now unsigned too (unsigned long, instead of long).
-- Issue #11873: Change regex in test_compileall to fix occasional failures when
- when the randomly generated temporary path happened to match the regex.
+- Issue #16166: Add PY_LITTLE_ENDIAN and PY_BIG_ENDIAN macros and unified
+ endianness detection and handling.
-- Issue #11958: Fix FTP tests for IPv6, bind to "::1" instead of "localhost".
- Patch written by Charles-Francois Natali.
+Documentation
+-------------
-- Issue #8407, #11859: Fix tests of test_io using threads and an alarm: use
- pthread_sigmask() to ensure that the SIGALRM signal is received by the main
- thread.
+- Issue #23006: Improve the documentation and indexing of dict.__missing__.
+ Add an entry in the language datamodel special methods section.
+ Revise and index its discussion in the stdtypes mapping/dict section.
-- Issue #11811: Factor out detection of IPv6 support on the current host
- and make it available as ``test.support.IPV6_ENABLED``. Patch by
- Charles-François Natali.
+- Issue #17701: Improving strftime documentation.
-- Issue #10914: Add a minimal embedding test to test_capi.
+- Issue #18440: Clarify that `hash()` can truncate the value returned from an
+ object's custom `__hash__()` method.
-- Issue #11223: Skip test_lock_acquire_interruption() and
- test_rlock_acquire_interruption() of test_threadsignals if a thread lock is
- implemented using a POSIX mutex and a POSIX condition variable. A POSIX
- condition variable cannot be interrupted by a signal (e.g. on Linux, the
- futex system call is restarted).
+- Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs.
-- Issue #11790: Fix sporadic failures in test_multiprocessing.WithProcessesTestCondition.
+- Issue #14097: improve the "introduction" page of the tutorial.
-- Fix possible "file already exists" error when running the tests in parallel.
+- Issue #17977: The documentation for the cadefault argument's default value
+ in urllib.request.urlopen() is fixed to match the code.
-- Issue #11719: Fix message about unexpected test_msilib skip on non-Windows
- platforms. Patch by Nadeem Vawda.
+- Issue #6696: add documentation for the Profile objects, and improve
+ profile/cProfile docs. Patch by Tom Pinckney.
-- Issue #11727: Add a --timeout option to regrtest: if a test takes more than
- TIMEOUT seconds, dumps the traceback of all threads and exits.
+- Issue #15940: Specify effect of locale on time functions.
-- Issue #11653: fix -W with -j in regrtest.
+- Issue #17538: Document XML vulnerabilties
-- The email test suite now lives in the Lib/test/test_email package. The test
- harness code has also been modernized to allow use of new unittest features.
+- Issue #16642: sched.scheduler timefunc initial default is time.monotonic.
+ Patch by Ramchandra Apte
-- regrtest now discovers test packages as well as test modules.
+- Issue #17047: remove doubled words in docs and docstrings
+ reported by Serhiy Storchaka and Matthew Barnett.
-- Issue #11577: improve test coverage of binhex.py. Patch by Arkady Koplyarov.
+- Issue #15465: Document the versioning macros in the C API docs rather than
+ the standard library docs. Patch by Kushal Das.
-- New test_crashers added to exercise the scripts in the Lib/test/crashers
- directory and confirm they fail as expected
+- Issue #16406: Combine the pages for uploading and registering to PyPI.
-- Issue #11578: added test for the timeit module. Patch by Michael Henry.
+- Issue #16403: Document how distutils uses the maintainer field in
+ PKG-INFO. Patch by Jyrki Pulliainen.
-- Issue #11503: improve test coverage of posixpath.py. Patch by Evan Dandrea.
+- Issue #16695: Document how glob handles filenames starting with a
+ dot. Initial patch by Jyrki Pulliainen.
-- Issue #11505: improves test coverage of string.py, increases granularity of
- string.Formatter tests. Initial patch by Alicia Arlen.
+- Issue #8890: Stop advertising an insecure practice by replacing uses
+ of the /tmp directory with better alternatives in the documentation.
+ Patch by Geoff Wilson.
-- Issue #11548: Improve test coverage of the shutil module. Patch by
- Evan Dandrea.
+- Issue #17203: add long option names to unittest discovery docs.
-- Issue #11554: Reactivated test_email_codecs.
+- Issue #13094: add "Why do lambdas defined in a loop with different values
+ all return the same result?" programming FAQ.
-- Issue #11505: improves test coverage of string.py. Patch by Alicia
- Arlen
+- Issue #14901: Update portions of the Windows FAQ.
+ Patch by Ashish Nitin Patil.
-- Issue #11490: test_subprocess.test_leaking_fds_on_error no longer gives a
- false positive if the last directory in the path is inaccessible.
+- Issue #16267: Better document the 3.3+ approach to combining
+ @abstractmethod with @staticmethod, @classmethod and @property
-- Issue #11223: Fix test_threadsignals to fail, not hang, when the
- non-semaphore implementation of locks is used under POSIX.
+- Issue #15209: Clarify exception chaining description in exceptions module
+ documentation
-- Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by
- Pierre Quentel.
+- Issue #15990: Improve argument/parameter documentation.
-- Issue #9931: Fix hangs in GUI tests under Windows in certain conditions.
- Patch by Hirokazu Yamamoto.
+- Issue #16209: Move the documentation for the str built-in function to a new
+ str class entry in the "Text Sequence Type" section.
-- Issue #10512: Properly close sockets under test.test_cgi.
+- Issue #13538: Improve str() and object.__str__() documentation.
-- Issue #10992: Make tests pass under coverage.
+- Issue #16489: Make it clearer that importlib.find_loader() needs parent
+ packages to be explicitly imported.
-- Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due
- to open door files.
+- Issue #16400: Update the description of which versions of a given package
+ PyPI displays.
-- Issue #10990: Prevent tests from clobbering a set trace function.
+- Issue #15677: Document that zlib and gzip accept a compression level of 0 to
+ mean 'no compression'. Patch by Brian Brazil.
-C-API
------
+- Issue #16197: Update winreg docstrings and documentation to match code.
+ Patch by Zachary Ware.
-- Issue #13452: PyUnicode_EncodeDecimal() doesn't support error handlers
- different than "strict" anymore. The caller was unable to compute the
- size of the output buffer: it depends on the error handler.
+- Issue #8040: added a version switcher to the documentation. Patch by
+ Yury Selivanov.
-- Issue #13560: Add PyUnicode_DecodeLocale(), PyUnicode_DecodeLocaleAndSize()
- and PyUnicode_EncodeLocale() functions to the C API to decode/encode from/to
- the current locale encoding.
+- Issue #16241: Document -X faulthandler command line option.
+ Patch by Marek Šuppa.
-- Issue #10831: PyUnicode_FromFormat() supports %li, %lli and %zi formats.
+- Additional comments and some style changes in the concurrent.futures URL
+ retrieval example
-- Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from
- UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode).
- Patch written by Ray Allen.
+- Issue #16115: Improve subprocess.Popen() documentation around args, shell,
+ and executable arguments.
-- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on
- narrow build.
+- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with
+ great native-speaker help from R. David Murray.
-- Add PyObject_GenericGetDict and PyObject_GeneriSetDict. They are generic
- implementations for the getter and setter of a ``__dict__`` descriptor of C
- types.
+- Issue #15533: Clarify docs and add tests for `subprocess.Popen()`'s cwd
+ argument.
-- Issue #13727: Add 3 macros to access PyDateTime_Delta members:
- PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS,
- PyDateTime_DELTA_GET_MICROSECONDS.
+- Issue #15979: Improve timeit documentation.
-- Issue #10542: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE,
- Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE,
- Py_UNICODE_JOIN_SURROGATES.
+- Issue #16036: Improve documentation of built-in `int()`'s signature and
+ arguments.
-- Issue #12724: Add Py_RETURN_NOTIMPLEMENTED macro for returning NotImplemented.
+- Issue #15935: Clarification of `argparse` docs, re: add_argument() type and
+ default arguments. Patch contributed by Chris Jerdonek.
-- PY_PATCHLEVEL_REVISION has been removed, since it's meaningless with
- Mercurial.
+- Issue #11964: Document a change in v3.2 to the behavior of the indent
+ parameter of json encoding operations.
-- Issue #12173: The first argument of PyImport_ImportModuleLevel is now `const
- char *` instead of `char *`.
+- Issue #15116: Remove references to appscript as it is no longer being
+ supported.
-- Issue #12380: PyArg_ParseTuple now accepts a bytearray for the 'c' format.
+Tools/Demos
+-----------
-Documentation
--------------
+- Issue #18817: Fix a resource warning in Lib/aifc.py demo. Patch by
+ Vajrasky Kok.
-- Issue #23006: Improve the documentation and indexing of dict.__missing__.
- Add an entry in the language datamodel special methods section.
- Revise and index its discussion in the stdtypes mapping/dict section.
+- Issue #18439: Make patchcheck work on Windows for ACKS, NEWS.
-- Issue #13989: Document that GzipFile does not support text mode, and give a
- more helpful error message when opened with an invalid mode string.
+- Issue #18448: Fix a typo in Tools/demo/eiffel.py.
-- Issue #13921: Undocument and clean up sqlite3.OptimizedUnicode,
- which is obsolete in Python 3.x. It's now aliased to str for
- backwards compatibility.
+- Issue #18457: Fixed saving of formulas and complex numbers in
+ Tools/demo/ss1.py.
-- Issue #12102: Document that buffered files must be flushed before being used
- with mmap. Patch by Steffen Daode Nurpmeso.
+- Issue #18449: Make Tools/demo/ss1.py work again on Python 3. Patch by
+ Févry Thibault.
-- Issue #8982: Improve the documentation for the argparse Namespace object.
+- Issue #12990: The "Python Launcher" on OSX could not launch python scripts
+ that have paths that include wide characters.
-- Issue #9343: Document that argparse parent parsers must be configured before
- their children.
+- Issue #15239: Make mkstringprep.py work again on Python 3.
-- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with
- great native-speaker help from R. David Murray.
+- Issue #17028: Allowed Python arguments to be supplied to the Windows
+ launcher.
-- Issues #13491 and #13995: Fix many errors in sqlite3 documentation.
- Initial patch for #13491 by Johannes Vogel.
+- Issue #17156: pygettext.py now detects the encoding of source files and
+ correctly writes and escapes non-ascii characters.
-- Issue #13402: Document absoluteness of sys.executable.
+- Issue #15539: Fix a number of bugs in Tools/scripts/pindent.py. Now
+ pindent.py works with a "with" statement. pindent.py no longer produces
+ improper indentation. pindent.py now works with continued lines broken after
+ "class" or "def" keywords and with continuations at the start of line.
-- Issue #13883: PYTHONCASEOK also works on OS X.
+- Issue #11797: Add a 2to3 fixer that maps reload() to imp.reload().
-- Issue #9021: Add an introduction to the copy module documentation.
+- Issue #10966: Remove the concept of unexpected skipped tests.
-- Issue #6005: Examples in the socket library documentation use sendall, where
- relevant, instead send method.
+- Issue #9893: Removed the Misc/Vim directory.
-- Issue #12798: Updated the mimetypes documentation.
+- Removed the Misc/TextMate directory.
-- Issue #12949: Document the kwonlyargcount argument for the PyCode_New
- C API function.
+- Issue #16245: Add the Tools/scripts/parse_html5_entities.py script to parse
+ the list of HTML5 entities and update the html.entities.html5 dictionary.
-- Issue #13513: Fix io.IOBase documentation to correctly link to the
- io.IOBase.readline method instead of the readline module.
+- Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka.
-- Issue #13237: Reorganise subprocess documentation to emphasise convenience
- functions and the most commonly needed arguments to Popen.
+- Issue #16549: Make json.tool work again on Python 3 and add tests.
+ Initial patch by Berker Peksag and Serhiy Storchaka.
-- Issue #13141: Demonstrate recommended style for socketserver examples.
+- Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py
+ Patch by Serhiy Storchaka.
-- Issue #11818: Fix tempfile examples for Python 3.
+Windows
+-------
+- Issue #18569: The installer now adds .py to the PATHEXT variable when extensions
+ are registered. Patch by Paul Moore.
**(For information about older versions, consult the HISTORY file.)**
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