- 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 #23247: Fix a crash in the StreamWriter.reset() of CJK codecs.
-- 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 #24270: Add math.isclose() and cmath.isclose() functions as per PEP 485.
+ Contributed by Chris Barker and Tal Einat.
-- Issue #23338: Fixed formatting ctypes error messages on Cygwin.
- Patch by Makoto Kato.
+- Issue #5633: Fixed timeit when the statement is a string and the setup is not.
-- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and
- arbitrary precision integers added in Tcl 8.5.
+- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument.
+ Original patch by David Moore.
-- 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 #16991: Add a C implementation of OrderedDict.
-- Issue #21526: Tkinter now supports new boolean type in Tcl 8.5.
+- Issue #23934: Fix inspect.signature to fail correctly for builtin types
+ lacking signature information. Initial patch by James Powell.
-- Issue #23838: linecache now clears the cache and returns an empty result on
- MemoryError.
-- 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.
+What's New in Python 3.5.0 beta 1?
+==================================
-- Issue #23745: The new email header parser now handles duplicate MIME
- parameter names without error, similar to how get_param behaves.
+Release date: 2015-05-24
-- 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.
+Core and Builtins
+-----------------
-- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes.
+- Issue #24276: Fixed optimization of property descriptor getter.
-- Issue #21802: The reader in BufferedRWPair now is closed even when closing
- writer failed in BufferedRWPair.close().
+- Issue #24268: PEP 489: Multi-phase extension module initialization.
+ Patch by Petr Viktorin.
-- 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 #23955: Add pyvenv.cfg option to suppress registry/environment
+ lookup for generating sys.path on Windows.
-- Issue #21560: An attempt to write a data of wrong type no longer cause
- GzipFile corruption. Original patch by Wolfgang Maier.
+- Issue #24257: Fixed system error in the comparison of faked
+ types.SimpleNamespace.
-- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes.
+- Issue #22939: Fixed integer overflow in iterator object. Patch by
+ Clement Rouault.
-- 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 #23985: Fix a possible buffer overrun when deleting a slice from
+ the front of a bytearray and then appending some other bytes data.
-- 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 #24102: Fixed exception type checking in standard error handlers.
-- Issue #23136: _strptime now uniformly handles all days in week 0, including
- Dec 30 of previous year. Based on patch by Jim Carroll.
+- Issue #15027: The UTF-32 encoder is now 3x to 7x faster.
- - Issue #23290: Optimize set_merge() for cases where the target is empty.
-- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to
- NamedTemporaryFile instance. Patch by Bohuslav Kabrda.
++- Issue #23290: Optimize set_merge() for cases where the target is empty.
+ (Contributed by Serhiy Storchaka.)
-- Issue #22903: The fake test case created by unittest.loader when it fails
- importing a test module is now picklable.
+- Issue #2292: PEP 448: Additional Unpacking Generalizations.
-- Issue #23568: Add rdivmod support to MagicMock() objects.
- Patch by Håkan Lövdahl.
+- Issue #24096: Make warnings.warn_explicit more robust against mutation of the
+ warnings.filters list.
-- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar.
- Patch by Demian Brecht.
+- Issue #23996: Avoid a crash when a delegated generator raises an
+ unnormalized StopIteration exception. Patch by Stefan Behnel.
-- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now
- handle exceptions raised by an iterator. Patch by Alon Diamant and Davin
- Potts.
+- Issue #23910: Optimize property() getter calls. Patch by Joe Jevnik.
-- Issue #22928: Disabled HTTP header injections in http.client.
- Original patch by Demian Brecht.
+- Issue #23911: Move path-based importlib bootstrap code to a separate
+ frozen module.
-- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with
- imp.reload(). Patch by Thomas Kluyver.
+- Issue #24192: Fix namespace package imports.
-- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST
- flag on certificate stores when it is available.
+- Issue #24022: Fix tokenizer crash when processing undecodable source code.
-- 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 #9951: Added a hex() method to bytes, bytearray, and memoryview.
-- Issue #23504: Added an __all__ to the types module.
+- Issue #22906: PEP 479: Change StopIteration handling inside generators.
-- Issue #20204: Added the __module__ attribute to _tkinter classes.
+- Issue #24017: PEP 492: Coroutines with async and await syntax.
-- Issue #23521: Corrected pure python implementation of timedelta division.
+Library
+-------
- * Eliminated OverflowError from timedelta * float for some floats;
- * Corrected rounding in timedlta true division.
+- Issue #14373: Added C implementation of functools.lru_cache(). Based on
+ patches by Matt Joiner and Alexey Kachayev.
-- 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 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 #6639: Module-level turtle functions no longer raise TclError after
- closing the window.
+- Issue #22189: collections.UserString now supports __getnewargs__(),
+ __rmod__(), casefold(), format_map(), isprintable(), and maketrans().
+ Patch by Joe Jevnik.
-- Issues #814253, #9179: Warnings now are raised when group references and
- conditional group references are used in lookbehind assertions in regular
- expressions.
+- Issue 24244: Prevents termination when an invalid format string is
+ encountered on Windows in strftime.
-- 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 #23973: PEP 484: Add the typing module.
-- Issue #5700: io.FileIO() called flush() after closing the file.
- flush() was not called in close() if closefd=False.
+- Issue #23086: The collections.abc.Sequence() abstract base class added
+ *start* and *stop* parameters to the index() mixin.
+ Patch by Devin Jeanpierre.
-- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding
- differs from file system encoding (e.g. on Mac OS).
+- 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 #23481: Remove RC4 from the SSL module's default cipher list.
+- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked
+ cursor type.
-- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty
- docstrings.
+- 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 #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb
- module. Original patch by Claudiu Popa.
+- Issue #9858: Add missing method stubs to _io.RawIOBase. Patch by Laura
+ Rupprecht.
-- Issue #23146: Fix mishandling of absolute Windows paths with forward
- slashes in pathlib.
+- 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 #23421: Fixed compression in tarfile CLI. Patch by wdv4758h.
+- 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 #23367: Fix possible overflows in the unicodedata module.
+- Issue #23780: Improved error message in os.path.join() with single argument.
-- Issue #23361: Fix possible overflow in Windows subprocess creation code.
+- Issue #6598: Increased time precision and random number range in
+ email.utils.make_msgid() to strengthen the uniqueness of the message ID.
-- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the
- entire preamble to a multipart body.
+- Issue #24091: Fixed various crashes in corner cases in C implementation of
+ ElementTree.
-- Issue #23310: Fix MagicMock's initializer to work with __methods__, just
- like configure_mock(). Patch by Kasia Jachim.
+- 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.
-- asyncio: New event loop APIs: set_task_factory() and get_task_factory().
+- Issue #13866: *quote_via* argument added to urllib.parse.urlencode.
-- asyncio: async() function is deprecated in favour of ensure_future().
+- Issue #20098: New mangle_from policy option for email, default True
+ for compat32, but False for all other policies.
-- Issue #23898: Fix inspect.classify_class_attrs() to support attributes
- with overloaded __eq__ and __bool__. Patch by Mike Bayer.
+- Issue #24211: The email library now supports RFC 6532: it can generate
+ headers using utf-8 instead of encoded words.
-- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers
- around bound methods.
+- Issue #16314: Added support for the LZMA compression in distutils.
-IDLE
-----
+- Issue #21804: poplib now supports RFC 6856 (UTF8).
-- Issue #23184: remove unused names and imports in idlelib.
- Initial patch by Al Sweigart.
+- Issue #18682: Optimized pprint functions for builtin scalar types.
-Tests
------
+- Issue #22027: smtplib now supports RFC 6531 (SMTPUTF8).
-- Issue #24751: When running regrtest with the ``-w`` command line option,
- a test run is no longer marked as a failure if all tests succeed when
- re-run.
+- 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 #24603: Update Windows builds and OS X 10.5 installer to use OpenSSL
- 1.0.2d.
+- 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 #24129: Clarify the reference documentation for name resolution.
- This includes removing the assumption that readers will be familiar with the
- name resolution scheme Python used prior to the introduction of lexical
- scoping for function namespaces. Patch by Ivan Levkivskyi.
+- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three
+ METH_VARARGS methods on _sqlite.Connection.
-- Issue #20769: Improve reload() docs. Patch by Dorian Pula.
+- 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 #23589: Remove duplicate sentence from the FAQ. Patch by Yongzhi Pan.
+- Issue #24018: Add a collections.abc.Generator abstract base class.
+ Contributed by Stefan Behnel.
-- Issue #24729: Correct IO tutorial to match implementation regarding
- encoding parameter to open function.
+- Issue #23880: Tkinter's getint() and getdouble() now support Tcl_Obj.
+ Tkinter's getdouble() now supports any numbers (in particular int).
-- Issue #24351: Clarify what is meant by "identifier" in the context of
- string.Template instances.
+- Issue #22619: Added negative limit support in the traceback module.
+ Based on patch by Dmitry Kazakov.
-- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter
- doc. Remove obsolete example from FAQ. Patch by Martin Panter.
+- Issue #24094: Fix possible crash in json.encode with poorly behaved dict
+ subclasses.
-- Issue #24029: Document the name binding behavior for submodule imports.
+- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes.
+ Patch written by William Orr.
-- Issue #24077: Fix typo in man page for -I command option: -s, not -S.
+- Issue #17445: add difflib.diff_bytes() to support comparison of
+ byte strings (fixes a regression from Python 2).
-Tools/Demos
------------
+- Issue #23917: Fall back to sequential compilation when ProcessPoolExecutor
+ doesn't exist. Patch by Claudiu Popa.
-- Issue #23330: h2py now supports arbitrary filenames in #include.
+- Issue #23008: Fixed resolving attributes with boolean value is False in pydoc.
-- Issue #24031: make patchcheck now supports git checkouts, too.
+- 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 #23908: os functions now reject paths with embedded null character
+ on Windows instead of silently truncate them.
-What's New in Python 3.4.3?
-===========================
+- Issue #23728: binascii.crc_hqx() could return an integer outside of the range
+ 0-0xffff for empty data.
-Release date: 2015-02-23
+- Issue #23887: urllib.error.HTTPError now has a proper repr() representation.
+ Patch by Berker Peksag.
-Core and Builtins
------------------
+- asyncio: New event loop APIs: set_task_factory() and get_task_factory().
-- Issue #22735: Fix many edge cases (including crashes) involving custom mro()
- implementations.
+- asyncio: async() function is deprecated in favour of ensure_future().
-- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer()
- and PyObject_AsWriteBuffer().
+- Issue 24178: asyncio.Lock, Condition, Semaphore, and BoundedSemaphore
+ support new 'async with' syntax. Contributed by Yury Selivanov.
-- Issue #21295: Revert some changes (issue #16795) to AST line numbers and
- column offsets that constituted a regression.
+- Issue 24179: Support 'async for' for asyncio.StreamReader.
+ Contributed by Yury Selivanov.
-- Issue #21408: The default __ne__() now returns NotImplemented if __eq__()
- returned NotImplemented. Original patch by Martin Panter.
+- Issue 24184: Add AsyncIterator and AsyncIterable ABCs to
+ collections.abc. Contributed by Yury Selivanov.
-- Issue #23321: Fixed a crash in str.decode() when error handler returned
- replacment string longer than mailformed input data.
+- Issue 22547: Implement informative __repr__ for inspect.BoundArguments.
+ Contributed by Yury Selivanov.
-- Issue #23048: Fix jumping out of an infinite while loop in the pdb.
+- Issue 24190: Implement inspect.BoundArgument.apply_defaults() method.
+ 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 20691: Add 'follow_wrapped' argument to
+ inspect.Signature.from_callable() and inspect.signature().
+ Contributed by Yury Selivanov.
-- Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff
- bytes on a 32-bit platform.
+- Issue 24248: Deprecate inspect.Signature.from_function() and
+ inspect.Signature.from_builtin().
-- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant
- dict insertion in debug mode.
+- Issue #23898: Fix inspect.classify_class_attrs() to support attributes
+ with overloaded __eq__ and __bool__. Patch by Mike Bayer.
-- Issue #22643: Fix integer overflow in Unicode case operations (upper, lower,
- title, swapcase, casefold).
+- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers
+ around bound methods.
-- Issue #22604: Fix assertion error in debug mode when dividing a complex
- number by (nan+0j).
+IDLE
+----
-- Issue #22470: Fixed integer overflow issues in "backslashreplace",
- "xmlcharrefreplace", and "surrogatepass" error handlers.
+- Issue #23184: remove unused names and imports in idlelib.
+ Initial patch by Al Sweigart.
-- Issue #22520: Fix overflow checking when generating the repr of a unicode
- object.
+Tests
+-----
-- Issue #22519: Fix overflow checking in PyBytes_Repr.
+- Issue #21520: test_zipfile no longer fails if the word 'bad' appears
+ anywhere in the name of the current directory.
-- Issue #22518: Fix integer overflow issues in latin-1 encoding.
+- Issue #9517: Move script_helper into the support package.
+ Patch by Christie Wilson.
-- Issue #23165: Perform overflow checks before allocating memory in the
- _Py_char2wchar function.
+Documentation
+-------------
-Library
--------
+- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter
+ doc. Remove obsolete example from FAQ. Patch by Martin Panter.
-- Issue #23399: pyvenv creates relative symlinks where possible.
+- Issue #24029: Document the name binding behavior for submodule imports.
-- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to
- prevent corrupting exported buffer.
+- Issue #24077: Fix typo in man page for -I command option: -s, not -S
-- Issue #23363: Fix possible overflow in itertools.permutations.
+Tools/Demos
+-----------
-- Issue #23364: Fix possible overflow in itertools.product.
+- Issue #24000: Improved Argument Clinic's mapping of converters to legacy
+ "format units". Updated the documentation to match.
-- Issue #23366: Fixed possible integer overflow in itertools.combinations.
+- Issue #24001: Argument Clinic converters now use accept={type}
+ instead of types={'type'} to specify the types the converter accepts.
-- Issue #23369: Fixed possible integer overflow in
- _json.encode_basestring_ascii.
+- Issue #23330: h2py now supports arbitrary filenames in #include.
-- 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 #24031: make patchcheck now supports git checkouts, too.
-- Issue #18518: timeit now rejects statements which can't be compiled outside
- a function or a loop (e.g. "return" or "break").
-- Issue #23094: Fixed readline with frames in Python implementation of pickle.
+What's New in Python 3.5.0 alpha 4?
+===================================
-- Issue #23268: Fixed bugs in the comparison of ipaddress classes.
+Release date: 2015-04-19
-- Issue #21408: Removed incorrect implementations of __ne__() which didn't
- returned NotImplemented if __eq__() returned NotImplemented. The default
- __ne__() now works correctly.
+Core and Builtins
+-----------------
-- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed)
- headers with no key rather than assuming the body has started.
+- 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 #23248: Update ssl error codes from latest OpenSSL git master.
+- Issue #22631: Added Linux-specific socket constant CAN_RAW_FD_FRAMES.
+ Patch courtesy of Joe Jevnik.
-- Issue #23098: 64-bit dev_t is now supported in the os module.
+- Issue #23731: Implement PEP 488: removal of .pyo files.
-- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure"
- as they are written in the standard.
+- 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 #23063: In the disutils' check command, fix parsing of reST with code or
- code-block directives.
+- 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 #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 #22977: Fixed formatting Windows error messages on Wine.
+ Patch by Martin Panter.
-- 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 #23466: %c, %o, %x, and %X in bytes formatting now raise TypeError on
+ non-integer input.
-- 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 #24044: Fix possible null pointer dereference in list.sort in out of
+ memory conditions.
-- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol
- version.
+- Issue #21354: PyCFunction_New function is exposed by python DLL again.
-- Issue #23132: Mitigate regression in speed and clarity in functools.total_ordering.
+Library
+-------
-- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(),
- instead of reading /dev/urandom, to get pseudo-random bytes.
+- Issue #23840: tokenize.open() now closes the temporary binary file on error
+ to fix a resource warning.
-- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and
- fragment when it redirects to add a trailing slash.
+- Issue #16914: new debuglevel 2 in smtplib adds timestamps to debug output.
-- Issue #23093: In the io, module allow more operations to work on detached
- streams.
+- 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 #19104: pprint now produces evaluable output for wrapped strings.
+- Issue #23703: Fix a regression in urljoin() introduced in 901e4e52b20a.
+ Patch by Demian Brecht.
-- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter.
+- Issue #4254: Adds _curses.update_lines_cols() Patch by Arnon Yaari
-- Issue #15513: Added a __sizeof__ implementation for pickle classes.
+- Issue 19933: Provide default argument for ndigits in round. Patch by
+ Vajrasky Kok.
-- 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 #23193: Add a numeric_owner parameter to
+ tarfile.TarFile.extract and tarfile.TarFile.extractall. Patch by
+ Michael Vogt and Eric Smith.
-- 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 #23342: Add a subprocess.run() function than returns a CalledProcess
+ instance for a more consistent API than the existing call* functions.
-- Issue #23016: A warning no longer produces an AttributeError when the program
- is run with pythonw.exe.
+- 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 #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 #24521: Fix possible integer overflows in the pickle module.
-- Issue #1218234: Fix inspect.getsource() to load updated source of
- reloaded module. Initial patch by Berker Peksag.
+- Issue #22931: Allow '[' and ']' in cookie values.
-- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the
- context's check_hostname attribute over the *check_hostname* parameter.
+- The keywords attribute of functools.partial is now always a dictionary.
-- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode
- will return. This resolves CVE-2013-1753.
+- Issue #23811: Add missing newline to the PyCompileError error message.
+ Patch by Alex Shkop.
-- 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 #21116: Avoid blowing memory when allocating a multiprocessing shared
+ array that's larger than 50% of the available RAM. Patch by Médéric Boquien.
-- Issue #21971: Update turtledemo doc and add module to the index.
+- Issue #22982: Improve BOM handling when seeking to multiple positions of
+ a writable text file.
-- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails.
- Original patch by Martin Panter.
+- Issue #23464: Removed deprecated asyncio JoinableQueue.
-- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor.
+- 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 #22915: SAX parser now supports files opened with file descriptor or
- bytes path.
+- Issue #21859: Added Python implementation of io.FileIO.
-- Issue #22609: Constructors and update methods of mapping classes in the
- collections module now accept the self keyword argument.
+- 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 #22788: Add *context* parameter to logging.handlers.HTTPHandler.
+- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not
+ available. Patch by Davin Potts.
-- Issue #22921: Allow SSLContext to take the *hostname* parameter even if
- OpenSSL doesn't support SNI.
+- 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 #22894: TestCase.subTest() would cause the test suite to be stopped
- when in failfast mode, even in the absence of failures.
+- Issue #23411: Added DefragResult, ParseResult, SplitResult, DefragResultBytes,
+ ParseResultBytes, and SplitResultBytes to urllib.parse.__all__.
+ Patch by Martin Panter.
-- Issue #22638: SSLv3 is now disabled throughout the standard library.
- It can still be enabled by instantiating a SSLContext manually.
+- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if
+ the FTP connection failed to fix a ResourceWarning.
-- Issue #22370: Windows detection in pathlib is now more robust.
+- 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 #22841: Reject coroutines in asyncio add_signal_handler().
- Patch by Ludovic.Gasc.
+- 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 #22849: Fix possible double free in the io.TextIOWrapper constructor.
+- 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 #12728: Different Unicode characters having the same uppercase but
- different lowercase are now matched in case-insensitive regular expressions.
+- Issue #10590: xml.sax.parseString() now supports string argument.
-- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian
- platforms.
+- Issue #23338: Fixed formatting ctypes error messages on Cygwin.
+ Patch by Makoto Kato.
-- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x.
- Based on patch by Martin Panter.
+- Issue #15582: inspect.getdoc() now follows inheritance chains.
-- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat.
- Based on patch by Aivars Kalvāns.
+- Issue #2175: SAX parsers now support a character stream of InputSource object.
-- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments.
+- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and
+ arbitrary precision integers added in Tcl 8.5.
-- Issue #22417: Verify certificates by default in httplib (PEP 476).
+- 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 #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2
- and above. Patch by Tim Graham.
+- 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 #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 #21526: Tkinter now supports new boolean type in Tcl 8.5.
-- Issue #22776: Brought excluded code into the scope of a try block in
- SysLogHandler.emit().
+- Issue #23836: Fix the faulthandler module to handle reentrant calls to
+ its signal handlers.
-- Issue #22665: Add missing get_terminal_size and SameFileError to
- shutil.__all__.
+- Issue #23838: linecache now clears the cache and returns an empty result on
+ MemoryError.
-- Issue #17381: Fixed handling of case-insensitive ranges in regular
- expressions.
+- Issue #10395: Added os.path.commonpath(). Implemented in posixpath and ntpath.
+ Based on patch by Rafik Draoui.
-- Issue #22410: Module level functions in the re module now cache compiled
- locale-dependent regular expressions taking into account the locale.
+- Issue #23611: Serializing more "lookupable" objects (such as unbound methods
+ or nested classes) now are supported with pickle protocols < 4.
-- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.)
- now return False when the underlying stat call raises NotADirectoryError.
+- Issue #13583: sqlite3.Row now supports slice indexing.
-- 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 #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 #18853: Fixed ResourceWarning in shlex.__nain__.
+- 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 #9351: Defaults set with set_defaults on an argparse subparser
- are no longer ignored when also set on the parent parser.
+- 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 #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 #23704: collections.deque() objects now support __add__, __mul__, and
+ __imul__().
-- Issue #22641: In asyncio, the default SSL context for client connections
- is now created using ssl.create_default_context(), for stronger security.
+- Issue #23171: csv.Writer.writerow() now supports arbitrary iterables.
-- Issue #22435: Fix a file descriptor leak when SocketServer bind fails.
+- Issue #23745: The new email header parser now handles duplicate MIME
+ parameter names without error, similar to how get_param behaves.
-- Issue #13096: Fixed segfault in CTypes POINTER handling of large
- values.
+- Issue #22117: Fix os.utime(), it now rounds the timestamp towards minus
+ infinity (-inf) instead of rounding towards zero.
-- Issue #11694: Raise ConversionError in xdrlib as documented. Patch
- by Filip Gruszczyński and Claudiu Popa.
+- Issue #23310: Fix MagicMock's initializer to work with __methods__, just
+ like configure_mock(). Patch by Kasia Jachim.
-- Issue #22462: Fix pyexpat's creation of a dummy frame to make it
- appear in exception tracebacks.
+Build
+-----
-- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called
- with an iterator alive.
+- Issue #23817: FreeBSD now uses "1.0" the the SOVERSION as other operating
+ systems, instead of just "1".
-- Issue #11866: Eliminated race condition in the computation of names
- for new threads.
+- Issue #23501: Argument Clinic now generates code into separate files by default.
-- Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules
- is mutated while iterating. Patch by Olivier Grisel.
+Tests
+-----
-- Issue #22219: The zipfile module CLI now adds entries for directories
- (including empty directories) in ZIP file.
+- Issue #23799: Added test.support.start_threads() for running and
+ cleaning up multiple threads.
-- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the
- environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows.
+- Issue #22390: test.regrtest now emits a warning if temporary files or
+ directories are left after running a test.
-- Issue #20076: Added non derived UTF-8 aliases to locale aliases table.
+Tools/Demos
+-----------
-- Issue #20079: Added locales supported in glibc 2.18 to locale alias table.
+- Issue #18128: pygettext now uses standard +NNNN format in the
+ POT-Creation-Date header.
-- 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 #23935: Argument Clinic's understanding of format units
+ accepting bytes, bytearrays, and buffers is now consistent with
+ both the documentation and the implementation.
-- Issue #22517: When a io.BufferedRWPair object is deallocated, clear its
- weakrefs.
+- Issue #23944: Argument Clinic now wraps long impl prototypes at column 78.
-- Issue #22448: Improve canceled timer handles cleanup to prevent
- unbound memory usage. Patch by Joshua Moore-Oliva.
+- Issue #20586: Argument Clinic now ensures that functions without docstrings
+ have signatures.
-- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no
- FD is registered.
+- Issue #23492: Argument Clinic now generates argument parsing code with
+ PyArg_Parse instead of PyArg_ParseTuple if possible.
-IDLE
-----
+- 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 #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.
+C API
+-----
-- Issue #16893: Update Idle doc chapter to match current Idle and add new
- information.
+- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error
-- 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 #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.
+What's New in Python 3.5.0 alpha 3?
+===================================
-- 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.
+Release date: 2015-03-28
-- Issue #21986: Code objects are not normally pickled by the pickle module.
- To match this, they are no longer pickled when running under Idle.
+Core and Builtins
+-----------------
-- Issue #23180: Rename IDLE "Windows" menu item to "Window".
- Patch by Al Sweigart.
+- 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).
-Tests
------
+- Issue #23753: Python doesn't support anymore platforms without stat() or
+ fstat(), these functions are always required.
-- Issue #23392: Added tests for marshal C API that works with FILE*.
+- Issue #23681: The -b option now affects comparisons of bytes with int.
-- Issue #18982: Add tests for CLI of the calendar module.
+- Issue #23632: Memoryviews now allow tuple indexing (including for
+ multi-dimensional memoryviews).
-- Issue #19548: Added some additional checks to test_codecs to ensure that
- statements in the updated documentation remain accurate. Patch by Martin
- Panter.
+- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet.
-- Issue #22838: All test_re tests now work with unittest test discovery.
+- Issue #23629: Fix the default __sizeof__ implementation for variable-sized
+ objects.
-- Issue #22173: Update lib2to3 tests to use unittest test discovery.
+Library
+-------
-- Issue #16000: Convert test_curses to use unittest.
+- Issue #14260: The groupindex attribute of regular expression pattern object
+ now is non-modifiable mapping.
-- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not
- present. Patch by Remi Pointel.
+- 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 #22770: Prevent some Tk segfaults on OS X when running gui tests.
+- Issue #23775: pprint() of OrderedDict now outputs the same representation
+ as repr().
-- Issue #23211: Workaround test_logging failure on some OS X 10.6 systems.
+- Issue #23765: Removed IsBadStringPtr calls in ctypes
-- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level
- values (like 0.9.8zc).
+- Issue #22364: Improved some re error messages using regex for hints.
-- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout.
+- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes.
-Build
------
+- Issue #21717: The zipfile.ZipFile.open function now supports 'x' (exclusive
+ creation) mode.
-- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure
- script.
+- Issue #21802: The reader in BufferedRWPair now is closed even when closing
+ writer failed in BufferedRWPair.close().
-- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support
- SSL 3.
+- 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.
-- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by
- Jonathan Hosmer.
+- 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 #18096: Fix library order returned by python-config.
+- Issue #23502: The pprint module now supports mapping proxies.
-- Issue #17219: Add library build dir for Python extension cross-builds.
+- Issue #17530: pprint now wraps long bytes objects and bytearrays.
-- Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer.
+- Issue #22687: Fixed some corner cases in breaking words in tetxtwrap.
+ Got rid of quadratic complexity in breaking long words.
-C API
------
+- 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 #22079: PyType_Ready() now checks that statically allocated type has
- no dynamically allocated bases.
+- 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).
-Documentation
--------------
+- Issue #23657: Avoid explicit checks for str in zipapp, adding support
+ for pathlib.Path objects as arguments.
-- 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 #23688: Added support of arbitrary bytes-like objects and avoided
+ unnecessary copying of memoryview in gzip.GzipFile.write().
+ Original patch by Wolfgang Maier.
- - Issue #23252: Added support for writing ZIP files to unseekable streams.
-- Issue #22914: Update the Python 2/3 porting HOWTO to describe a more automated
- approach.
++- Issue #23252: Added support for writing ZIP files to unseekable streams.
-- Issue #21514: The documentation of the json module now refers to new JSON RFC
- 7159 instead of obsoleted RFC 4627.
+- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes.
-Tools/Demos
------------
+- 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 #22314: pydoc now works when the LINES environment variable is set.
+- 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.
-Windows
--------
+- 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.
-- Issue #17896: The Windows build scripts now expect external library sources
- to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``.
+- 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.
-- Issue #17717: The Windows build scripts now use a copy of NASM pulled from
- svn.python.org to build OpenSSL.
+- 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.
-- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j.
+- 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 #23136: _strptime now uniformly handles all days in week 0, including
+ Dec 30 of previous year. Based on patch by Jim Carroll.
-What's New in Python 3.4.2?
-===========================
+- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to
+ NamedTemporaryFile instance. Patch by Bohuslav Kabrda.
-Release date: 2014-10-06
+- Issue #22903: The fake test case created by unittest.loader when it fails
+ importing a test module is now picklable.
-Library
--------
+- 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 #10510: distutils register and upload methods now use HTML standards
- compliant CRLF line endings.
+- Issue #18983: Allow selection of output units in timeit.
+ Patch by Julian Gindi.
-- Issue #9850: Fixed macpath.join() for empty first component. Patch by
- Oleg Oshmyan.
+- Issue #23631: Fix traceback.format_list when a traceback has been mutated.
-- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when
- used in the with statement in generator.
+- Issue #23568: Add rdivmod support to MagicMock() objects.
+ Patch by Håkan Lövdahl.
-- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS
- directory attributes.
+- Issue #2052: Add charset parameter to HtmlDiff.make_file().
-- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory
- records if allowZip64 is false.
+- Issue #23668: Support os.truncate and os.ftruncate on Windows.
-- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re
- module. Removed trailing spaces in debugging output.
+- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar.
+ Patch by Demian Brecht.
-- Issue #22423: Unhandled exception in thread no longer causes unhandled
- AttributeError when sys.stderr is None.
+- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now
+ handle exceptions raised by an iterator. Patch by Alon Diamant and Davin
+ Potts.
-- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects
- line buffering, rather than block buffering. Patch by Akira Li.
+- Issue #23581: Add matmul support to MagicMock. Patch by Håkan Lövdahl.
+- Issue #23566: enable(), register(), dump_traceback() and
+ dump_traceback_later() functions of faulthandler now accept file
+ descriptors. Patch by Wei Wu.
-What's New in Python 3.4.2rc1?
-==============================
+- Issue #22928: Disabled HTTP header injections in http.client.
+ Original patch by Demian Brecht.
-Release date: 2014-09-22
+- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with
+ imp.reload(). Patch by Thomas Kluyver.
-Core and Builtins
------------------
+- 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.
-- 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``).
+Build
+-----
-- 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 #23585: make patchcheck will ensure the interpreter is built.
-- 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.
+Tests
+-----
-- 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 #23583: Added tests for standard IO streams in IDLE.
-Library
--------
+- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout.
-- 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.
+Tools/Demos
+-----------
-- Issue #21079: Fix email.message.EmailMessage.is_attachment to return the
- correct result when the header has parameters as well as a value.
+- 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 #22247: Add NNTPError to nntplib.__all__.
-- Issue #4180: The warnings registries are now reset when the filters
- are modified.
+What's New in Python 3.5 alpha 2?
+=================================
-- 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.
+Release date: 2015-03-09
-- 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.
+Core and Builtins
+-----------------
-- Issue #22384: An exception in Tkinter callback no longer crashes the program
- when it is run with pythonw.exe.
+- 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 #22168: Prevent turtle AttributeError with non-default Canvas on OS X.
+Library
+-------
-- 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 #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 #21951: Fixed a crash in Tkinter on AIX when called Tcl command with
- empty string or tuple argument.
+- Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address.
-- Issue #21951: Tkinter now most likely raises MemoryError instead of crash
- if the memory allocation fails.
+- Issue #21793: BaseHTTPRequestHandler again logs response code as numeric,
+ not as stringified enum. Patch by Demian Brecht.
-- Issue #22338: Fix a crash in the json module on memory allocation failure.
+- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST
+ flag on certificate stores when it is available.
-- Issue #22226: First letter no longer is stripped from the "status" key in
- the result of Treeview.heading().
+- 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 #19524: Fixed resource leak in the HTTP connection when an invalid
- response is received. Patch by Martin Panter.
+- Issue #23504: Added an __all__ to the types module.
-- 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 #23563: Optimized utility functions in urllib.parse.
-- 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 #7830: Flatten nested functools.partial.
-- 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 #20204: Added the __module__ attribute to _tkinter classes.
-- Issue #18132: Turtledemo buttons no longer disappear when the window is
- shrunk. Original patches by Jan Kanis and Lita Cho.
+- 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 #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 #23521: Corrected pure python implementation of timedelta division.
-- 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.
+ * Eliminated OverflowError from timedelta * float for some floats;
+ * Corrected rounding in timedlta true division.
-- Issue #22182: Use e.args to unpack exceptions correctly in
- distutils.file_util.move_file. Patch by Claudiu Popa.
+- Issue #21619: Popen objects no longer leave a zombie after exit in the with
+ statement if the pipe was broken. Patch by Martin Panter.
-- The webbrowser module now uses subprocess's start_new_session=True rather
- than a potentially risky preexec_fn=os.setsid call.
+- Issue #22936: Make it possible to show local variables in tracebacks for
+ both the traceback module and unittest.
-- Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode.
+- Issue #15955: Add an option to limit the output size in bz2.decompress().
+ Patch by Nikolaus Rath.
-- Issue #22191: Fix warnings.__all__.
+- Issue #6639: Module-level turtle functions no longer raise TclError after
+ closing the window.
-- Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows.
+- Issues #814253, #9179: Group references and conditional group references now
+ work in lookbehind assertions in regular expressions.
-- Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter.
+- 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 #22165: SimpleHTTPRequestHandler now supports undecodable file names.
+- Issue #5700: io.FileIO() called flush() after closing the file.
+ flush() was not called in close() if closefd=False.
-- Issue #8797: Raise HTTPError on failed Basic Authentication immediately.
- Initial patch by Sam Bull.
+- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding
+ differs from file system encoding (e.g. on Mac OS).
-- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems()
- in the mailbox module.
+- Issue #23481: Remove RC4 from the SSL module's default cipher list.
-- Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when
- parsing long line. Original patch by Raymond Hettinger.
+- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty
+ docstrings.
-- Issue #22184: The functools LRU Cache decorator factory now gives an earlier
- and clearer error message when the user forgets the required parameters.
+- Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb
+ module. Original patch by Claudiu Popa.
-- Issue #17923: glob() patterns ending with a slash no longer match non-dirs on
- AIX. Based on patch by Delhallt.
+- Issue #23239: ssl.match_hostname() now supports matching of IP addresses.
-- Issue #21121: Don't force 3rd party C extensions to be built with
- -Werror=declaration-after-statement.
+- Issue #23146: Fix mishandling of absolute Windows paths with forward
+ slashes in pathlib.
-- 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 #23096: Pickle representation of floats with protocol 0 now is the same
+ for both Python and C implementations.
-- Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk.
- In particular this allows to initialize images from binary data.
+- Issue #19105: pprint now more efficiently uses free space at the right.
-- Issue #17172: Make turtledemo start as active on OS X even when run with
- subprocess. Patch by Lita Cho.
+- Issue #14910: Add allow_abbrev parameter to argparse.ArgumentParser. Patch by
+ Jonathan Paugh, Steven Bethard, paul j3 and Daniel Eriksson.
-- Issue #21704: Fix build error for _multiprocessing when semaphores
- are not available. Patch by Arfrever Frehtes Taifersar Arahesis.
+- Issue #21717: tarfile.open() now supports 'x' (exclusive creation) mode.
-- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError
- on closed socket. repr(socket.socket) already works fine.
+- Issue #23344: marshal.dumps() is now 20-25% faster on average.
-- Issue #16133: The asynchat.async_chat.handle_read() method now ignores
- BlockingIOError exceptions.
+- Issue #20416: marshal.dumps() with protocols 3 and 4 is now 40-50% faster on
+ average.
-- Issue #22044: Fixed premature DECREF in call_tzinfo_method.
- Patch by Tom Flanagan.
+- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h.
-- 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 #23367: Fix possible overflows in the unicodedata module.
-- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is
- specified.
+- Issue #23361: Fix possible overflow in Windows subprocess creation code.
-- Issue #21044: tarfile.open() now handles fileobj with an integer 'name'
- attribute. Based on patch by Antoine Pietri.
+- 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 #21867: Prevent turtle crash due to invalid undo buffer size.
+- Issue #19705: turtledemo now has a visual sorting algorithm demo. Original
+ patch from Jason Yeo.
-- Issue #19076: Don't pass the redundant 'file' argument to self.error().
+- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the
+ entire preamble to a multipart body.
-- Issue #21942: Fixed source file viewing in pydoc's server mode on Windows.
+Build
+-----
-- Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError
- if the number of received bytes is negative.
+- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make
+ the resulting executable faster.
-- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't
- get a bytes string
+- Issue #23686: Update OS X 10.5 installer build to use OpenSSL 1.0.2a.
-- Issue #21707: Add missing kwonlyargcount argument to
- ModuleFinder.replace_paths_in_code().
+C API
+-----
-- Issue #20639: calling Path.with_suffix('') allows removing the suffix
- again. Patch by July Tikhonov.
+- Issue #20204: Deprecation warning is now raised for builtin type without the
+ __module__ attribute.
-- Issue #21714: Disallow the construction of invalid paths using
- Path.with_name(). Original patch by Antony Lee.
+Windows
+-------
-- Issue #21897: Fix a crash with the f_locals attribute with closure
- variables when frame.clear() has been called.
+- Issue #23465: Implement PEP 486 - Make the Python Launcher aware of virtual
+ environments. Patch by Paul Moore.
-- Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed
- as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman.
+- Issue #23437: Make user scripts directory versioned on Windows. Patch by Paul
+ Moore.
-- 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 #21781: ssl.RAND_add() now supports strings longer than 2 GB.
+What's New in Python 3.5 alpha 1?
+=================================
-- 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.
+Release date: 2015-02-08
-- Issue #21858: Better handling of Python exceptions in the sqlite3 module.
+Core and Builtins
+-----------------
-- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is
- discarded after parsing, so the input file isn't unexpectedly closed.
+- Issue #23285: PEP 475 - EINTR handling.
-- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure
- files closing. Patch by Claudiu Popa.
+- Issue #22735: Fix many edge cases (including crashes) involving custom mro()
+ implementations.
-- Issue #21491: socketserver: Fix a race condition in child processes reaping.
+- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer()
+ and PyObject_AsWriteBuffer().
-- Issue #21832: Require named tuple inputs to be exact strings.
+- Issue #21295: Revert some changes (issue #16795) to AST line numbers and
+ column offsets that constituted a regression.
-- 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 #22986: Allow changing an object's __class__ between a dynamic type and
+ static type in some cases.
-- Issue #21812: turtle.shapetransform did not tranform the turtle on the
- first call. (Issue identified and fixed by Lita Cho.)
+- 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 #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 #21408: The default __ne__() now returns NotImplemented if __eq__()
+ returned NotImplemented. Original patch by Martin Panter.
-- Issue #21722: The distutils "upload" command now exits with a non-zero
- return code when uploading fails. Patch by Martin Dengler.
+- Issue #23321: Fixed a crash in str.decode() when error handler returned
+ replacment string longer than mailformed input data.
-- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the
- maximum size. Patch written by Vajrasky Kok.
+- Issue #22286: The "backslashreplace" error handlers now works with
+ decoding and translating.
-- 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 #23253: Delay-load ShellExecute[AW] in os.startfile for reduced
+ startup overhead on Windows.
-- 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 #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 #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths
- before checking for a CGI script at that path.
+- Issue #20284: %-interpolation (aka printf) formatting added for bytes and
+ bytearray.
-- Issue #21310: Fixed possible resource leak in failed open().
+- Issue #23048: Fix jumping out of an infinite while loop in the pdb.
-- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods.
+- Issue #20335: bytes constructor now raises TypeError when encoding or errors
+ is specified with non-string argument. Based on patch by Renaud Blanch.
-- Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a
- valid file.
+- Issue #22834: If the current working directory ends up being set to a
+ non-existent directory then import will no longer raise FileNotFoundError.
-- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods
- that use 'self' in the example code is generated correctly.
+- Issue #22869: Move the interpreter startup & shutdown code to a new
+ dedicated pylifecycle.c module
-- Issue #21463: In urllib.request, fix pruning of the FTP cache.
+- Issue #22847: Improve method cache efficiency.
-- 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 #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff
+ bytes on a 32-bit platform.
-- Issue #21552: Fixed possible integer overflow of too long string lengths in
- the tkinter module on 64-bit platforms.
+- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant
+ dict insertion in debug mode.
-- 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 #22643: Fix integer overflow in Unicode case operations (upper, lower,
+ title, swapcase, casefold).
-- Issue #21402: tkinter.ttk now works when default root window is not set.
+- Issue #17636: Circular imports involving relative imports are now
+ supported.
-- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particulr
- it supports reverse() and negative indices. Original patch by Claudiu Popa.
-
-- 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 #22604: Fix assertion error in debug mode when dividing a complex
+ number by (nan+0j).
-- Issue #14710: pkgutil.get_loader() no longer raises an exception when None is
- found in sys.modules.
+- Issue #21052: Do not raise ImportWarning when sys.path_hooks or sys.meta_path
+ are set to None.
-- Issue #14710: pkgutil.find_loader() no longer raises an exception when a
- module doesn't exist.
+- 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 #21481: Argparse equality and inequality tests now return
- NotImplemented when comparing to an unknown type.
+- Issue #22470: Fixed integer overflow issues in "backslashreplace",
+ "xmlcharrefreplace", and "surrogatepass" error handlers.
-- Issue #8743: Fix interoperability between set objects and the
- collections.Set() abstract base class.
+- Issue #22540: speed up `PyObject_IsInstance` and `PyObject_IsSubclass` in the
+ common case that the second argument has metaclass `type`.
-- Issue #13355: random.triangular() no longer fails with a ZeroDivisionError
- when low equals high.
+- Issue #18711: Add a new `PyErr_FormatV` function, similar to `PyErr_Format`
+ but accepting a `va_list` argument.
-- Issue #21538: The plistlib module now supports loading of binary plist files
- when reference or offset size is not a power of two.
+- Issue #22520: Fix overflow checking when generating the repr of a unicode
+ object.
-- Issue #21801: Validate that __signature__ is None or an instance of Signature.
+- Issue #22519: Fix overflow checking in PyBytes_Repr.
-- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler
- due to possible uninitialized _config_vars.
+- Issue #22518: Fix integer overflow issues in latin-1 encoding.
-- 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 #16324: _charset parameter of MIMEText now also accepts
+ email.charset.Charset instances. Initial patch by Claude Paroz.
-Extension Modules
------------------
+- Issue #1764286: Fix inspect.getsource() to support decorated functions.
+ Patch by Claudiu Popa.
-- 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 #18554: os.__all__ includes posix functions.
-Build
------
+- Issue #21391: Use os.path.abspath in the shutil module.
-- Issue #15661: python.org OS X installers are now distributed as signed
- installer packages compatible with the Gatekeeper security feature.
+- 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 #21958: Define HAVE_ROUND when building with Visual Studio 2013 and
- above. Patch by Zachary Turner.
+- Issue #22215: Now ValueError is raised instead of TypeError when str or bytes
+ argument contains not permitted null character or byte.
-- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/
- now display special message when and only when there are failures.
+- 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``).
-- Issue #17095: Fix Modules/Setup *shared* support.
+- Issue #21389: Displaying the __qualname__ of the underlying function in the
+ repr of a bound method.
-- Issue #21811: Anticipated fixes to support OS X versions > 10.9.
+- Issue #22206: Using pthread, PyThread_create_key() now sets errno to ENOMEM
+ and returns -1 (error) on integer overflow.
-- Issue #21166: Prevent possible segfaults and other random failures of
- python --generate-posix-vars in pybuilddir.txt build target.
+- Issue #20184: Argument Clinic based signature introspection added for
+ 30 of the builtin functions.
-IDLE
-----
+- Issue #22116: C functions and methods (of the 'builtin_function_or_method'
+ type) can now be weakref'ed. Patch by Wei Wu.
-- Issue #17390: Adjust Editor window title; remove 'Python',
- move version to end.
+- 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 #14105: Idle debugger breakpoints no longer disappear
- when inseting or deleting lines.
+- Issue #20179: Apply Argument Clinic to bytes and bytearray.
+ Patch by Tal Einat.
-- 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 #22082: Clear interned strings in slotdefs.
-- Issue #21765: Add support for non-ascii identifiers to HyperParser.
+- Upgrade Unicode database to Unicode 7.0.0.
-- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav
- Heblikar.
+- Issue #21897: Fix a crash with the f_locals attribute with closure
+ variables when frame.clear() has been called.
-- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster.
+- 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 #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar.
+- 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 #21686: add unittest for HyperParser. Original patch by Saimadhav
- Heblikar.
+- 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 #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 #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 #21695: Closing a Find-in-files output window while the search is
- still in progress no longer closes Idle.
+- Issue #21418: Fix a crash in the builtin function super() when called without
+ argument and without current frame (ex: embedded Python).
-- Issue #18910: Add unittest for textView. Patch by Phil Webster.
+- Issue #21425: Fix flushing of standard streams in the interactive
+ interpreter.
-- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar.
+- 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 #18409: Add unittest for AutoComplete. Patch by Phil Webster.
+- Issue #21377: PyBytes_Concat() now tries to concatenate in-place when the
+ first argument has a reference count of 1. Patch by Nikolaus Rath.
-Tests
------
+- Issue #20355: -W command line options now have higher priority than the
+ PYTHONWARNINGS environment variable. Patch by Arfrever.
-- 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 #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c.
-- Issue #22236: Tkinter tests now don't reuse default root window. New root
- window is created for every test class.
+- Issue #20904: Support setting FPU precision on m68k.
-- Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier
- de Gaye.
+- Issue #21209: Fix sending tuples to custom generator objects with the yield
+ from syntax.
-- Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it
- now uses unittest test discovery to find its tests.
+- Issue #21193: pow(a, b, c) now raises ValueError rather than TypeError when b
+ is negative. Patch by Josh Rosenberg.
-- Issue #22104: regrtest.py no longer holds a reference to the suite of tests
- loaded from test modules that don't define test_main().
+- PEP 465 and Issue #21176: Add the '@' operator for matrix multiplication.
-- 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 #21134: Fix segfault when str is called on an uninitialized
+ UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object.
-- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks
- to William Orr.
+- Issue #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by
+ Andreas Schwab.
-- Issue #21918: Converted test_tools from a module to a package containing
- separate test files for each tested script.
+- Issue #20929: Add a type cast to avoid shifting a negative number.
-- 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 #20731: Properly position in source code files even if they
+ are opened in text mode. Patch by Serhiy Storchaka.
-- Issue #19493: Refactored the ctypes test package to skip tests explicitly
- rather than silently.
+- Issue #20637: Key-sharing now also works for instance dictionaries of
+ subclasses. Patch by Peter Ingebretson.
-- Issue #18492: All resources are now allowed when tests are not run by
- regrtest.py.
+- Issue #8297: Attributes missing from modules now include the module name
+ in the error text. Original patch by ysj.ray.
-- 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 #19995: %c, %o, %x, and %X now raise TypeError on non-integer input.
-- Issue #21605: Added tests for Tkinter images.
+- 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.
-- Issue #21493: Added test for ntpath.expanduser(). Original patch by
- Claudiu Popa.
+- Issue #12546: Allow \x00 to be used as a fill character when using str, int,
+ float, and complex __format__ methods.
-- Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok.
+- Issue #20480: Add ipaddress.reverse_pointer. Patch by Leon Weber.
-- Issue #21522: Added Tkinter tests for Listbox.itemconfigure(),
- PanedWindow.paneconfigure(), and Menu.entryconfigure().
+- 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.
-Documentation
--------------
+- 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 #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 #23165: Perform overflow checks before allocating memory in the
+ _Py_char2wchar function.
-Windows
+Library
-------
-- Issue #21671, #22160, CVE-2014-0224: The bundled version of OpenSSL has been
- updated to 1.0.1i.
+- Issue #23399: pyvenv creates relative symlinks where possible.
-- Issue #10747: Use versioned labels in the Windows start menu.
- Patch by Olive Kilburn.
+- Issue #20289: cgi.FieldStorage() now supports the context management
+ protocol.
-Tools/Demos
------------
+- Issue #13128: Print response headers for CONNECT requests when debuglevel
+ > 0. Patch by Demian Brecht.
-- Issue #22201: Command-line interface of the zipfile module now correctly
- extracts ZIP files with directory entries. Patch by Ryan Wilson.
+- Issue #15381: Optimized io.BytesIO to make less allocations and copyings.
-- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3.
- Patch by Zachary Ware.
+- 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.
-- Issue #21629: Fix Argument Clinic's "--converters" feature.
+- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to
+ prevent corrupting exported buffer.
+- Issue #23326: Removed __ne__ implementations. Since fixing default __ne__
+ implementation in issue #21408 they are redundant.
-What's New in Python 3.4.1?
-===========================
+- Issue #23363: Fix possible overflow in itertools.permutations.
-Release date: 2014-05-18
+- Issue #23364: Fix possible overflow in itertools.product.
-Core and Builtins
------------------
+- Issue #23366: Fixed possible integer overflow in itertools.combinations.
-- Issue #21418: Fix a crash in the builtin function super() when called without
- argument and without current frame (ex: embedded Python).
+- Issue #23369: Fixed possible integer overflow in
+ _json.encode_basestring_ascii.
-- Issue #21425: Fix flushing of standard streams in the interactive
- interpreter.
+- 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 #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 #14099: Restored support of writing ZIP files to tellable but
+ non-seekable streams.
-Library
--------
+- Issue #14099: Writing to ZipFile and reading multiple ZipExtFiles is
+ threadsafe now.
-- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial
- shape.
+- Issue #19361: JSON decoder now raises JSONDecodeError instead of ValueError.
-- Issue #20998: Fixed re.fullmatch() of repeated single character pattern
- with ignore case. Original patch by Matthew Barnett.
+- Issue #18518: timeit now rejects statements which can't be compiled outside
+ a function or a loop (e.g. "return" or "break").
-- Issue #21075: fileinput.FileInput now reads bytes from standard stream if
- binary mode is specified. Patch by Sam Kimbrel.
+- Issue #23094: Fixed readline with frames in Python implementation of pickle.
-- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a
- flush() on the underlying binary stream. Patch by akira.
+- Issue #23268: Fixed bugs in the comparison of ipaddress classes.
-- 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 #21408: Removed incorrect implementations of __ne__() which didn't
+ returned NotImplemented if __eq__() returned NotImplemented. The default
+ __ne__() now works correctly.
-- Issue #21398: Fix an unicode error in the pydoc pager when the documentation
- contains characters not encodable to the stdout encoding.
+- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed)
+ headers with no key rather than assuming the body has started.
-Tests
------
+- Issue #20188: Support Application-Layer Protocol Negotiation (ALPN) in the ssl
+ module.
-- Issue #17756: Fix test_code test when run from the installed location.
+- Issue #23133: Pickling of ipaddress objects now produces more compact and
+ portable representation.
-- Issue #17752: Fix distutils tests when run from the installed location.
+- Issue #23248: Update ssl error codes from latest OpenSSL git master.
-IDLE
-----
+- Issue #23266: Much faster implementation of ipaddress.collapse_addresses()
+ when there are many non-consecutive addresses.
-- 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 #23098: 64-bit dev_t is now supported in the os module.
+- 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.
-What's New in Python 3.4.1rc1?
-==============================
+- Issue #15955: Add an option to limit output size when decompressing LZMA
+ data. Patch by Nikolaus Rath and Martin Panter.
-Release date: 2014-05-05
+- 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 #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c.
+- 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 #21209: Fix sending tuples to custom generator objects with the yield
- from syntax.
+- Issue #17911: Provide a way to seed the linecache for a PEP-302 module
+ without actually loading the code.
-- Issue #21134: Fix segfault when str is called on an uninitialized
- UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object.
+- 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 #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by
- Andreas Schwab.
+- Issue #19777: Provide a home() classmethod on Path objects. Contributed
+ by Victor Salgado and Mayank Tripathi.
-- Issue #20929: Add a type cast to avoid shifting a negative number.
+- Issue #23206: Make ``json.dumps(..., ensure_ascii=False)`` as fast as the
+ default case of ``ensure_ascii=True``. Patch by Naoki Inada.
-- Issue #20731: Properly position in source code files even if they
- are opened in text mode. Patch by Serhiy Storchaka.
+- Issue #23185: Add math.inf and math.nan constants.
-- Issue #20637: Key-sharing now also works for instance dictionaries of
- subclasses. Patch by Peter Ingebretson.
+- Issue #23186: Add ssl.SSLObject.shared_ciphers() and
+ ssl.SSLSocket.shared_ciphers() to fetch the client's list ciphers sent at
+ handshake.
-- Issue #12546: Allow \x00 to be used as a fill character when using str, int,
- float, and complex __format__ methods.
+- Issue #23143: Remove compatibility with OpenSSLs older than 0.9.8.
-- 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 #23132: Improve performance and introspection support of comparison
+ methods created by functool.total_ordering.
-Library
--------
+- Issue #19776: Add a expanduser() method on Path objects.
-- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0.
- In porting to Argument Clinic, the first two arguments were reversed.
+- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and
+ fragment when it redirects to add a trailing slash.
-- 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 #21793: Added http.HTTPStatus enums (i.e. HTTPStatus.OK,
+ HTTPStatus.NOT_FOUND). Patch by Demian Brecht.
-- Issue #21321: itertools.islice() now releases the reference to the source
- iterator when the slice is exhausted. Patch by Anton Afanasyev.
+- Issue #23093: In the io, module allow more operations to work on detached
+ streams.
-- Issue #9815: assertRaises now tries to clear references to local variables
- in the exception's traceback.
+- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol
+ version.
-- Issue #13204: Calling sys.flags.__new__ would crash the interpreter,
- now it raises a TypeError.
+- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(),
+ instead of reading /dev/urandom, to get pseudo-random bytes.
-- Issue #19385: Make operations on a closed dbm.dumb database always raise the
- same exception.
+- Issue #19104: pprint now produces evaluable output for wrapped strings.
-- Issue #21207: Detect when the os.urandom cached fd has been closed or
- replaced, and open it anew.
+- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter.
-- 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 #22783: Pickling now uses the NEWOBJ opcode instead of the NEWOBJ_EX
+ opcode if possible.
-- Issue #21127: Path objects can now be instantiated from str subclass
- instances (such as ``numpy.str_``).
+- Issue #15513: Added a __sizeof__ implementation for pickle classes.
-- 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 #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 #12220: mindom now raises a custom ValueError indicating it doesn't
- support spaces in URIs instead of letting a 'split' ValueError bubble up.
+- 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 #21239: patch.stopall() didn't work deterministically when the same
- name was patched more than once.
+- Issue #23016: A warning no longer produces an AttributeError when the program
+ is run with pythonw.exe.
-- Issue #21222: Passing name keyword argument to mock.create_autospec now
- works.
+- 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 #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX.
+- Issue #1218234: Fix inspect.getsource() to load updated source of
+ reloaded module. Initial patch by Berker Peksag.
-- 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 #21740: Support wrapped callables in doctest. Patch by Claudiu Popa.
-- Issue #17826: setting an iterable side_effect on a mock function created by
- create_autospec now works. Patch by Kushal Das.
+- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no
+ FD is registered.
-- Issue #7776: Fix ``Host:`` header and reconnection when using
- http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath.
+- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the
+ context's check_hostname attribute over the *check_hostname* parameter.
-- Issue #20968: unittest.mock.MagicMock now supports division.
- Patch by Johannes Baiter.
+- Issue #22696: Add function :func:`sys.is_finalizing` to know about
+ interpreter shutdown.
-- Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second
- parameter. Bug reported by Guido Vranken.
+- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode
+ will return. This resolves CVE-2013-1753.
-- Issue #21169: getpass now handles non-ascii characters that the
- input stream encoding cannot encode by re-encoding using the
- replace error handler.
+- 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 #21171: Fixed undocumented filter API of the rot13 codec.
- Patch by Berker Peksag.
+- 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 #21172: isinstance check relaxed from dict to collections.Mapping.
+- Issue #21971: Update turtledemo doc and add module to the index.
-- Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError
- if path and sock are specified at the same time.
+- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails.
+ Original patch by Martin Panter.
-- Issue #21149: Improved thread-safety in logging cleanup during interpreter
- shutdown. Thanks to Devin Jeanpierre for the patch.
+- Issue #22407: Deprecated the use of re.LOCALE flag with str patterns or
+ re.ASCII. It was newer worked.
-- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a
- TypeError if the second argument is not a string or compiled regex.
+- Issue #22902: The "ip" command is now used on Linux to determine MAC address
+ in uuid.getnode(). Pach by Bruno Cauet.
-- Issue #21058: Fix a leak of file descriptor in
- :func:`tempfile.NamedTemporaryFile`, close the file descriptor if
- :func:`io.open` fails
+- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor.
-- Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing.
+- Issue #22389: Add contextlib.redirect_stderr().
-- Issue #21013: Enhance ssl.create_default_context() when used for server side
- sockets to provide better security by default.
+- 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 #20633: Replace relative import by absolute import.
+- Issue #22915: SAX parser now supports files opened with file descriptor or
+ bytes path.
-- Issue #20980: Stop wrapping exception when using ThreadPool.
+- Issue #22609: Constructors and update methods of mapping classes in the
+ collections module now accept the self keyword argument.
-- Issue #21082: In os.makedirs, do not set the process-wide umask. Note this
- changes behavior of makedirs when exist_ok=True.
+- Issue #22940: Add readline.append_history_file.
-- Issue #20990: Fix issues found by pyflakes for multiprocessing.
+- Issue #19676: Added the "namereplace" error handler.
-- 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 #22788: Add *context* parameter to logging.handlers.HTTPHandler.
-- Issue #20995: Enhance default ciphers used by the ssl module to enable
- better security an prioritize perfect forward secrecy.
+- Issue #22921: Allow SSLContext to take the *hostname* parameter even if
+ OpenSSL doesn't support SNI.
-- Issue #20884: Don't assume that __file__ is defined on importlib.__init__.
+- Issue #22894: TestCase.subTest() would cause the test suite to be stopped
+ when in failfast mode, even in the absence of failures.
-- Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests.
+- Issue #22796: HTTP cookie parsing is now stricter, in order to protect
+ against potential injection attacks.
-- 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 #22370: Windows detection in pathlib is now more robust.
-- Issue #19157: Include the broadcast address in the usuable hosts for IPv6
- in ipaddress.
+- Issue #22841: Reject coroutines in asyncio add_signal_handler().
+ Patch by Ludovic.Gasc.
-- 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 #19494: Added urllib.request.HTTPBasicPriorAuthHandler. Patch by
+ Matej Cepl.
-- Issue #4931: distutils should not produce unhelpful "error: None" messages
- anymore. distutils.util.grok_environment_error is kept but doc-deprecated.
+- Issue #22578: Added attributes to the re.error class.
-- Issue #20875: Prevent possible gzip "'read' is not defined" NameError.
- Patch by Claudiu Popa.
+- Issue #22849: Fix possible double free in the io.TextIOWrapper constructor.
-- 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 #12728: Different Unicode characters having the same uppercase but
+ different lowercase are now matched in case-insensitive regular expressions.
-- 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 #22821: Fixed fcntl() with integer argument on 64-bit big-endian
+ platforms.
-- Issue #20778: Fix modulefinder to work with bytecode-only modules.
+- Issue #21650: Add an `--sort-keys` option to json.tool CLI.
- - Issue #22824: Updated reprlib output format for sets to use set literals.
-- Issue #20791: copy.copy() now doesn't make a copy when the input is
- a bytes object. Initial patch by Peter Otten.
++- Issue #22824: Updated reprlib output format for sets to use set literals.
+ Patch contributed by Berker Peksag.
- - Issue #22824: Updated reprlib output format for arrays to display empty
-- Issue #19748: On AIX, time.mktime() now raises an OverflowError for year
- outsize range [1902; 2037].
++- Issue #22824: Updated reprlib output format for arrays to display empty
+ arrays without an unnecessary empty list. Suggested by Serhiy Storchaka.
-- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for
- missing keyword-only arguments. Patch by Jeremiah Lowin.
+- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x.
+ Based on patch by Martin Panter.
-- Issue #20817: Fix inspect.getcallargs() to fail correctly if more
- than 3 arguments are missing. Patch by Jeremiah Lowin.
+- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat.
+ Based on patch by Aivars Kalvāns.
-- 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 #22769: Fixed ttk.Treeview.tag_has() when called without arguments.
-- 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 #22417: Verify certificates by default in httplib (PEP 476).
-- Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug
- in yield-from implementation in CPythons prior to 3.4.1.
+- Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2
+ and above. Patch by Tim Graham.
-- asyncio: Add gi_{frame,running,code} properties to CoroWrapper
- (upstream issue #163).
+- Issue #22776: Brought excluded code into the scope of a try block in
+ SysLogHandler.emit().
-- Issue #21311: Avoid exception in _osx_support with non-standard compiler
- configurations. Patch by John Szakmeister.
+- Issue #22665: Add missing get_terminal_size and SameFileError to
+ shutil.__all__.
-- Issue #11571: Ensure that the turtle window becomes the topmost window
- when launched on OS X.
+- Issue #6623: Remove deprecated Netrc class in the ftplib module. Patch by
+ Matt Chaput.
-Extension Modules
------------------
+- Issue #17381: Fixed handling of case-insensitive ranges in regular
+ expressions.
-- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd.
+- Issue #22410: Module level functions in the re module now cache compiled
+ locale-dependent regular expressions taking into account the locale.
-- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject
- (and friends).
+- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.)
+ now return False when the underlying stat call raises NotADirectoryError.
-IDLE
-----
+- 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 #21139: Change default paragraph width to 72, the PEP 8 recommendation.
+- Issue #22217: Implemented reprs of classes in the zipfile module.
-- Issue #21284: Paragraph reformat test passes after user changes reformat width.
+- Issue #22457: Honour load_tests in the start_dir of discovery.
-- Issue #17654: Ensure IDLE menus are customized properly on OS X for
- non-framework builds and for all variants of Tk.
+- Issue #18216: gettext now raises an error when a .mo file has an
+ unsupported major version number. Patch by Aaron Hill.
-Build
------
+- 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.
-- The Windows build now includes OpenSSL 1.0.1g
+- Issue #22676: Make the pickling of global objects which don't have a
+ __module__ attribute less slow.
-- Issue #21285: Refactor and fix curses configure check to always search
- in a ncursesw directory.
+- Issue #18853: Fixed ResourceWarning in shlex.__nain__.
-- 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 #9351: Defaults set with set_defaults on an argparse subparser
+ are no longer ignored when also set on the parent parser.
-- 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 #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.
-C API
------
+- 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 #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 #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.
-Documentation
--------------
+- Issue #22638: SSLv3 is now disabled throughout the standard library.
+ It can still be enabled by instantiating a SSLContext manually.
-- Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make
- it much more comparable to ``Doc/Makefile``.
+- Issue #22641: In asyncio, the default SSL context for client connections
+ is now created using ssl.create_default_context(), for stronger security.
-- Issue #21043: Remove the recommendation for specific CA organizations and to
- mention the ability to load the OS certificates.
+- Issue #17401: Include closefd in io.FileIO repr.
-- Issue #20765: Add missing documentation for PurePath.with_name() and
- PurePath.with_suffix().
+- 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 #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 #20152: Convert the array and cmath modules to Argument Clinic.
-- Issue #19697: Document cases where __main__.__spec__ is None.
+- Issue #18643: Add socket.socketpair() on Windows.
-Tests
------
+- Issue #22435: Fix a file descriptor leak when SocketServer bind fails.
-- 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 #13096: Fixed segfault in CTypes POINTER handling of large
+ values.
-- Issue #21275: Fix a socket test on KFreeBSD.
+- Issue #11694: Raise ConversionError in xdrlib as documented. Patch
+ by Filip Gruszczyński and Claudiu Popa.
-- Issue #21223: Pass test_site/test_startup_imports when some of the extensions
- are built as builtins.
+- Issue #19380: Optimized parsing of regular expressions.
-- Issue #20635: Added tests for Tk geometry managers.
+- Issue #1519638: Now unmatched groups are replaced with empty strings in re.sub()
+ and re.subn().
-- Add test case for freeze.
+- Issue #18615: sndhdr.what/whathdr now return a namedtuple.
-- Issue #20743: Fix a reference leak in test_tcl.
+- Issue #22462: Fix pyexpat's creation of a dummy frame to make it
+ appear in exception tracebacks.
-- Issue #21097: Move test_namespace_pkgs into test_importlib.
+- Issue #21965: Add support for in-memory SSL to the ssl module. Patch
+ by Geert Jansen.
-- 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 #21173: Fix len() on a WeakKeyDictionary when .clear() was called
+ with an iterator alive.
-- Issue #20668: asyncio tests no longer rely on tests.txt file.
- (Patch by Vajrasky Kok)
+- Issue #11866: Eliminated race condition in the computation of names
+ for new threads.
-- 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 #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules
+ is mutated while iterating. Patch by Olivier Grisel.
-Tools/Demos
------------
+- 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.
-- Add support for ``yield from`` to 2to3.
+- 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.
-- Add support for the PEP 465 matrix multiplication operator to 2to3.
+- Issue #22219: The zipfile module CLI now adds entries for directories
+ (including empty directories) in ZIP file.
-- Issue #16047: Fix module exception list and __file__ handling in freeze.
- Patch by Meador Inge.
+- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the
+ environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows.
-- Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge.
+- 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.
-- Issue #20535: PYTHONWARNING no longer affects the run_tests.py script.
- Patch by Arfrever Frehtes Taifersar Arahesis.
+- Issue #20076: Added non derived UTF-8 aliases to locale aliases table.
+- Issue #20079: Added locales supported in glibc 2.18 to locale alias table.
-What's New in Python 3.4.0?
-===========================
+- Issue #20218: Added convenience methods read_text/write_text and read_bytes/
+ write_bytes to pathlib.Path objects.
-Release date: 2014-03-16
+- Issue #22437: Number of capturing groups in regular expression is no longer
+ limited by 100.
-Library
--------
+- Issue #17442: InteractiveInterpreter now displays the full chained traceback
+ in its showtraceback method, to match the built in interactive interpreter.
-- Issue #20939: Fix test_geturl failure in test_urllibnet due to
- new redirect of http://www.python.org/ to https://www.python.org.
+- Issue #23392: Added tests for marshal C API that works with FILE*.
-Documentation
--------------
-- Merge in all documentation changes since branching 3.4.0rc1.
+- Issue #10510: distutils register and upload methods now use HTML standards
+ compliant CRLF line endings.
+- Issue #9850: Fixed macpath.join() for empty first component. Patch by
+ Oleg Oshmyan.
-What's New in Python 3.4.0 release candidate 3?
-===============================================
+- Issue #5309: distutils' build and build_ext commands now accept a ``-j``
+ option to enable parallel building of extension modules.
-Release date: 2014-03-09
+- Issue #22448: Improve canceled timer handles cleanup to prevent
+ unbound memory usage. Patch by Joshua Moore-Oliva.
-Core and Builtins
------------------
+- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when
+ used in the with statement in generator.
-- Issue #20786: Fix signatures for dict.__delitem__ and
- property.__delete__ builtins.
+- Issue #22362: Forbidden ambiguous octal escapes out of range 0-0o377 in
+ regular expressions.
-Library
--------
+- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS
+ directory attributes.
-- 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 #21866: ZipFile.close() no longer writes ZIP64 central directory
+ records if allowZip64 is false.
-Build
------
+- Issue #22278: Fix urljoin problem with relative urls, a regression observed
+ after changes to issue22118 were submitted.
-- Issue #14512: Launch pydoc -b instead of pydocgui.pyw on Windows.
+- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re
+ module. Removed trailing spaces in debugging output.
-- Issue #20748: Uninstalling pip does not leave behind the pyc of
- the uninstaller anymore.
+- Issue #22423: Unhandled exception in thread no longer causes unhandled
+ AttributeError when sys.stderr is None.
-- Issue #20568: The Windows installer now installs the unversioned ``pip``
- command in addition to the versioned ``pip3`` and ``pip3.4`` commands.
+- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects
+ line buffering, rather than block buffering. Patch by Akira Li.
-- 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 #21091: Fix API bug: email.message.EmailMessage.is_attachment is now
+ a method.
-- Issue #20465: Update OS X and Windows installer builds to use
- SQLite 3.8.3.1.
+- Issue #21079: Fix email.message.EmailMessage.is_attachment to return the
+ correct result when the header has parameters as well as a value.
+- Issue #22247: Add NNTPError to nntplib.__all__.
-What's New in Python 3.4.0 release candidate 2?
-===============================================
+- 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.
-Release date: 2014-02-23
+- Issue #4180: The warnings registries are now reset when the filters
+ are modified.
-Core and Builtins
------------------
+- 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.
-- Issue #20625: Parameter names in __annotations__ were not mangled properly.
- Discovered by Jonas Wielicki, patch by Yury Selivanov.
+- 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 #20261: In pickle, lookup __getnewargs__ and __getnewargs_ex__ on the
- type of the object.
+- 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 #20619: Give the AST nodes of keyword-only arguments a column and line
- number.
+- Issue #22384: An exception in Tkinter callback no longer crashes the program
+ when it is run with pythonw.exe.
-- 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 #22168: Prevent turtle AttributeError with non-default Canvas on OS X.
-Library
--------
+- 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 #20710: The pydoc summary line no longer displays the "self" parameter
- for bound methods.
+- Issue #13968: The glob module now supports recursive search in
+ subdirectories using the "**" pattern.
-- Issue #20566: Change asyncio.as_completed() to use a Queue, to
- avoid O(N**2) behavior.
+- Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with
+ empty string or tuple argument.
-- 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 #21951: Tkinter now most likely raises MemoryError instead of crash
+ if the memory allocation fails.
-- 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 #22338: Fix a crash in the json module on memory allocation failure.
-- 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 #12410: imaplib.IMAP4 now supports the context management protocol.
+ Original patch by Tarek Ziadé.
-- 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 #21270: We now override tuple methods in mock.call objects so that
+ they can be used as normal call attributes.
-- 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 #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 #20616: Add a format() method to tracemalloc.Traceback.
+- Issue #22226: First letter no longer is stripped from the "status" key in
+ the result of Treeview.heading().
-- 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 #19524: Fixed resource leak in the HTTP connection when an invalid
+ response is received. Patch by Martin Panter.
-- Issue #20594: Avoid name clash with the libc function posix_close.
+- Issue #20421: Add a .version() method to SSL sockets exposing the actual
+ protocol version in use.
-Build
------
+- Issue #19546: configparser exceptions no longer expose implementation details.
+ Chained KeyErrors are removed, which leads to cleaner tracebacks. Patch by
+ Claudiu Popa.
-- Issue #20641: Run MSI custom actions (pip installation, pyc compilation)
- with the NoImpersonate flag, to support elevated execution (UAC).
+- 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 #20221: Removed conflicting (or circular) hypot definition when
- compiled with VS 2010 or above. Initial patch by Tabrez Mohammed.
+- 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 #20609: Restored the ability to build 64-bit Windows binaries on
- 32-bit Windows, which was broken by the change in issue #19788.
+- 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 #18132: Turtledemo buttons no longer disappear when the window is
+ shrunk. Original patches by Jan Kanis and Lita Cho.
-What's New in Python 3.4.0 release candidate 1?
-===============================================
+- 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.
-Release date: 2014-02-10
+- Issue #21527: Add a default number of workers to ThreadPoolExecutor equal
+ to 5 times the number of CPUs. Patch by Claudiu Popa.
-Core and Builtins
------------------
+- 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 #19255: The builtins module is restored to initial value before
- cleaning other modules. The sys and builtins modules are cleaned last.
+- 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 #20588: Make Python-ast.c C89 compliant.
+- 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 #20437: Fixed 22 potential bugs when deleting objects references.
+- 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 #20500: Displaying an exception at interpreter shutdown no longer
- risks triggering an assertion failure in PyObject_Str.
+- Issue #22182: Use e.args to unpack exceptions correctly in
+ distutils.file_util.move_file. Patch by Claudiu Popa.
-- Issue #20538: UTF-7 incremental decoder produced inconsistent string when
- input was truncated in BASE64 section.
+- The webbrowser module now uses subprocess's start_new_session=True rather
+ than a potentially risky preexec_fn=os.setsid call.
-- 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 #22042: signal.set_wakeup_fd(fd) now raises an exception if the file
+ descriptor is in blocking mode.
-- Issue #17162: Add PyType_GetSlot.
+- Issue #16808: inspect.stack() now returns a named tuple instead of a tuple.
+ Patch by Daniel Shahaf.
-- Issue #20162: Fix an alignment issue in the siphash24() hash function which
- caused a crash on PowerPC 64-bit (ppc64).
+- Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode.
-Library
--------
+- 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 #20530: The signatures for slot builtins have been updated
- to reflect the fact that they only accept positional-only arguments.
+- 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 #20517: Functions in the os module that accept two filenames
- now register both filenames in the exception on failure.
+- Issue #21549: Added the "members" parameter to TarFile.list().
-- Issue #20563: The ipaddress module API is now considered stable.
+- Issue #19628: Allow compileall recursion depth to be specified with a -r
+ option.
-- 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 #15696: Add a __sizeof__ implementation for mmap objects on Windows.
-- 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 #22068: Avoided reference loops with Variables and Fonts in Tkinter.
-- Issue #16983: the new email header parsing code will now decode encoded words
- that are (incorrectly) surrounded by quotes, and register a defect.
+- Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names.
-- Issue #19772: email.generator no longer mutates the message object when
- doing a down-transform from 8bit to 7bit CTEs.
+- Issue #15381: Optimized line reading in io.BytesIO.
-- Issue #20536: the statistics module now correctly handle Decimal instances
- with positive exponents
+- Issue #8797: Raise HTTPError on failed Basic Authentication immediately.
+ Initial patch by Sam Bull.
-- Issue #18805: the netmask/hostmask parsing in ipaddress now more reliably
- filters out illegal values and correctly allows any valid prefix length.
+- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems()
+ in the mailbox module.
-- 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 #21448: Changed FeedParser feed() to avoid O(N**2) behavior when
+ parsing long line. Original patch by Raymond Hettinger.
- - Issue #22184: The functools LRU Cache decorator factory now gives an earlier
-- Issue #20478: the statistics module now treats collections.Counter inputs
- like any other iterable.
++- Issue #22184: The functools LRU Cache decorator factory now gives an earlier
+ and clearer error message when the user forgets the required parameters.
-- 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 #17923: glob() patterns ending with a slash no longer match non-dirs on
+ AIX. Based on patch by Delhallt.
-- 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 #21725: Added support for RFC 6531 (SMTPUTF8) in smtpd.
-- 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 #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 #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 #5411: Added support for the "xztar" format in the shutil module.
-- Issue #19920: TarFile.list() no longer fails when outputs a listing
- containing non-encodable characters. Based on patch by Vajrasky Kok.
+- Issue #21121: Don't force 3rd party C extensions to be built with
+ -Werror=declaration-after-statement.
-- Issue #20515: Fix NULL pointer dereference introduced by issue #20368.
+- 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 #19186: Restore namespacing of expat symbols inside the pyexpat module.
+- Issue #20170: Convert posixmodule to use Argument Clinic.
-- Issue #20053: ensurepip (and hence venv) are no longer affected by the
- settings in the default pip configuration file.
+- 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 #20426: When passing the re.DEBUG flag, re.compile() displays the
- debug output every time it is called, regardless of the compilation cache.
+- Issue #22127: Bypass IDNA for pure-ASCII host names in the socket module
+ (in particular for numeric IPs).
-- Issue #20368: The null character now correctly passed from Tcl to Python.
- Improved error handling in variables-related commands.
+- Issue #21047: set the default value for the *convert_charrefs* argument
+ of HTMLParser to True. Patch by Berker Peksag.
-- Issue #20435: Fix _pyio.StringIO.getvalue() to take into account newline
- translation settings.
+- Add an __all__ to html.entities.
-- tracemalloc: Fix slicing traces and fix slicing a traceback.
+- Issue #15114: the strict mode and argument of HTMLParser, HTMLParser.error,
+ and the HTMLParserError exception have been removed.
-- 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 #22085: Dropped support of Tk 8.3 in Tkinter.
-- Issue #17159: inspect.signature now accepts duck types of functions,
- which adds support for Cython functions. Initial patch by Stefan Behnel.
+- Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk.
+ In particular this allows to initialize images from binary data.
-- Issue #18801: Fix inspect.classify_class_attrs to correctly classify
- object.__new__ and object.__init__.
+- 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.
-- Fixed cmath.isinf's name in its argument parsing code.
+- Issue #22018: On Windows, signal.set_wakeup_fd() now also supports sockets.
+ A side effect is that Python depends to the WinSock library.
-- 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 #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.
-- 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 #17172: Make turtledemo start as active on OS X even when run with
+ subprocess. Patch by Lita Cho.
-- Issue #20288: fix handling of invalid numeric charrefs in HTMLParser.
+- Issue #21704: Fix build error for _multiprocessing when semaphores
+ are not available. Patch by Arfrever Frehtes Taifersar Arahesis.
-- Issue #20424: Python implementation of io.StringIO now supports lone surrogates.
+- Issue #20173: Convert sha1, sha256, sha512 and md5 to ArgumentClinic.
+ Patch by Vajrasky Kok.
-- Issue #20308: inspect.signature now works on classes without user-defined
- __init__ or __new__ methods.
+- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError
+ on closed socket. repr(socket.socket) already works fine.
-- 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 #22033: Reprs of most Python implemened classes now contain actual
+ class name instead of hardcoded one.
-- Issue #20356: inspect.signature formatting uses '/' to separate
- positional-only parameters from others.
+- Issue #21947: The dis module can now disassemble generator-iterator
+ objects based on their gi_code attribute. Patch by Clement Rouault.
-- Issue #20223: inspect.signature now supports methods defined with
- functools.partialmethods.
+- Issue #16133: The asynchat.async_chat.handle_read() method now ignores
+ BlockingIOError exceptions.
-- Issue #19456: ntpath.join() now joins relative paths correctly when a drive
- is present.
+- Issue #22044: Fixed premature DECREF in call_tzinfo_method.
+ Patch by Tom Flanagan.
-- 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 #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 #20394: Silence Coverity warning in audioop module.
+- Issue #4350: Removed a number of out-of-dated and non-working for a long time
+ Tkinter methods.
-- Issue #20367: Fix behavior of concurrent.futures.as_completed() for
- duplicate arguments. 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 #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 #15275: Clean up and speed up the ntpath module.
-- Issue #20105: the codec exception chaining now correctly sets the
- traceback of the original exception as its __traceback__ attribute.
+- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is
+ specified.
-- Issue #17481: inspect.getfullargspec() now uses inspect.signature() API.
+- Issue #22032: __qualname__ instead of __name__ is now always used to format
+ fully qualified class names of Python implemented classes.
-- Issue #15304: concurrent.futures.wait() can block forever even if
- Futures have completed. Patch by Glenn Langford.
+- Issue #22031: Reprs now always use hexadecimal format with the "0x" prefix
+ when contain an id in form " at 0x...".
-- 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 #22018: signal.set_wakeup_fd() now raises an OSError instead of a
+ ValueError on ``fstat()`` failure.
-IDLE
-----
+- Issue #21044: tarfile.open() now handles fileobj with an integer 'name'
+ attribute. Based on patch by Antoine Pietri.
-- Issue #20406: Use Python application icons for Idle window title bars.
- Patch mostly by Serhiy Storchaka.
+- Issue #21966: Respect -q command-line option when code module is ran.
-- Update the python.gif icon for the Idle classbrowser and pathbowser
- from the old green snake to the new blue and yellow snakes.
+- Issue #19076: Don't pass the redundant 'file' argument to self.error().
-- Issue #17721: Remove non-functional configuration dialog help button until we
- make it actually gives some help when clicked. Patch by Guilherme Simões.
+- Issue #16382: Improve exception message of warnings.warn() for bad
+ category. Initial patch by Phil Elson.
-Tests
------
+- 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.
-- Issue #20532: Tests which use _testcapi now are marked as CPython only.
+- Issue #21942: Fixed source file viewing in pydoc's server mode on Windows.
-- Issue #19920: Added tests for TarFile.list(). Based on patch by Vajrasky Kok.
+- Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError
+ if the number of received bytes is negative.
-- Issue #19990: Added tests for the imghdr module. Based on patch by
- Claudiu Popa.
+- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't
+ get a bytes string
-- Issue #20474: Fix test_socket "unexpected success" failures on OS X 10.7+.
+- Issue #21707: Add missing kwonlyargcount argument to
+ ModuleFinder.replace_paths_in_code().
-Tools/Demos
------------
+- Issue #20639: calling Path.with_suffix('') allows removing the suffix
+ again. Patch by July Tikhonov.
-- 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 #21714: Disallow the construction of invalid paths using
+ Path.with_name(). Original patch by Antony Lee.
-- 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 #15014: Added 'auth' method to smtplib to make implementing auth
+ mechanisms simpler, and used it internally in the login method.
-- 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 #21151: Fixed a segfault in the winreg module when ``None`` is passed
+ as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman.
-- Issue #20456: Fixed Argument Clinic's test suite and "--converters" feature.
+- 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 #20456: Argument Clinic now allows specifying different names
- for a parameter in Python and C, using "as" on the parameter line.
+- Issue #5800: headers parameter of wsgiref.headers.Headers is now optional.
+ Initial patch by Pablo Torres Navarrete and SilentGhost.
-- 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 #21781: ssl.RAND_add() now supports strings longer than 2 GB.
-- 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 #21679: Prevent extraneous fstat() calls during open(). Patch by
+ Bohuslav Kabrda.
-Build
------
+- Issue #21863: cProfile now displays the module name of C extension functions,
+ in addition to their own name.
-- Issue #20465: Update SQLite shipped with OS X installer to 3.8.3.
+- 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.
-C-API
------
+- Issue #21858: Better handling of Python exceptions in the sqlite3 module.
-- Issue #20517: Added new functions allowing OSError exceptions to reference
- two filenames instead of one: PyErr_SetFromErrnoWithFilenameObjects() and
- PyErr_SetExcFromWindowsErrWithFilenameObjects().
+- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is
+ discarded after parsing, so the input file isn't unexpectedly closed.
-Documentation
--------------
+- Issue #20295: imghdr now recognizes OpenEXR format images.
-- Issue #20488: Change wording to say importlib is *the* implementation of
- import instead of just *an* implementation.
+- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure
+ files closing. Patch by Claudiu Popa.
-- 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 #21491: socketserver: Fix a race condition in child processes reaping.
+- Issue #21719: Added the ``st_file_attributes`` field to os.stat_result on
+ Windows.
- - Issue #21832: Require named tuple inputs to be exact strings.
-What's New in Python 3.4.0 Beta 3?
-==================================
++- Issue #21832: Require named tuple inputs to be exact strings.
-Release date: 2014-01-26
+- Issue #21722: The distutils "upload" command now exits with a non-zero
+ return code when uploading fails. Patch by Martin Dengler.
-Core and Builtins
------------------
+- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the
+ maximum size. Patch written by Vajrasky Kok.
-- Issue #20189: Four additional builtin types (PyTypeObject,
- PyMethodDescr_Type, _PyMethodWrapper_Type, and PyWrapperDescr_Type)
- have been modified to provide introspection information for builtins.
+- Issue #21711: support for "site-python" directories has now been removed
+ from the site module (it was deprecated in 3.4).
-- Issue #17825: Cursor "^" is correctly positioned for SyntaxError and
- IndentationError.
+- 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 #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 #18039: dbm.dump.open() now always creates a new database when the
+ flag has the value 'n'. Patch by Claudiu Popa.
-- 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 #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.
-Library
--------
+- Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths
+ before checking for a CGI script at that path.
-- 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 #21310: Fixed possible resource leak in failed open().
-- 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 #21256: Printout of keyword args should be in deterministic order in
+ a mock function call. This will help to write better doctests.
-- Issue #20311: selectors: Add a resolution attribute to BaseSelector.
+- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods.
-- 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 #11709: Fix the pydoc.help function to not fail when sys.stdin is not a
+ valid file.
-- 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 #21515: tempfile.TemporaryFile now uses os.O_TMPFILE flag is available.
-- Issue #20374: Fix build with GNU readline >= 6.3.
+- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods
+ that use 'self' in the example code is generated correctly.
-- Issue #20262: Warnings are raised now when duplicate names are added in the
- ZIP file or too long ZIP file comment is truncated.
+- Issue #21463: In urllib.request, fix pruning of the FTP cache.
-- Issue #20165: The unittest module no longer considers tests marked with
- @expectedFailure successful if they pass.
+- 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 #18574: Added missing newline in 100-Continue reply from
- http.server.BaseHTTPRequestHandler. Patch by Nikolaus Rath.
+- Issue #20383: Introduce importlib.util.module_from_spec() as the preferred way
+ to create a new module.
-- Issue #20270: urllib.urlparse now supports empty ports.
+- Issue #21552: Fixed possible integer overflow of too long string lengths in
+ the tkinter module on 64-bit platforms.
-- Issue #20243: TarFile no longer raise ReadError when opened in write mode.
+- 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 #13742: Added "key" and "reverse" parameters to heapq.merge().
-- Issue #20238: TarFile opened with external fileobj and "w:gz" mode didn't
- write complete output on close.
++- Issue #13742: Added "key" and "reverse" parameters to heapq.merge().
+ (First draft of patch contributed by Simon Sapin.)
-- Issue #20245: The open functions in the tarfile module now correctly handle
- empty mode.
+- Issue #21402: tkinter.ttk now works when default root window is not set.
-- Issue #20242: Fixed basicConfig() format strings for the alternative
- formatting styles. Thanks to kespindler for the bug report and patch.
+- Issue #3015: _tkinter.create() now creates tkapp object with wantobject=1 by
+ default.
-- Issue #20246: Fix buffer overflow in socket.recvfrom_into.
+- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particulr
+ it supports reverse() and negative indices. Original patch by Claudiu Popa.
-- 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 #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 #19082: Working xmlrpc.server and xmlrpc.client examples. Both in
- modules and in documentation. Initial patch contributed by Vajrasky Kok.
+- Issue #20197: Added support for the WebP image type in the imghdr module.
+ Patch by Fabrice Aneche and Claudiu Popa.
-- Issue #20138: The wsgiref.application_uri() and wsgiref.request_uri()
- functions now conform to PEP 3333 when handle non-ASCII URLs.
+- Issue #21513: Speedup some properties of IP addresses (IPv4Address,
+ IPv6Address) such as .is_private or .is_multicast.
-- Issue #19097: Raise the correct Exception when cgi.FieldStorage is given an
- invalid fileobj.
+- Issue #21137: Improve the repr for threading.Lock() and its variants
+ by showing the "locked" or "unlocked" status. Patch by Berker Peksag.
-- Issue #20152: Ported Python/import.c over to Argument Clinic.
+- Issue #21538: The plistlib module now supports loading of binary plist files
+ when reference or offset size is not a power of two.
-- 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 #21455: Add a default backlog to socket.listen().
-- Issue #20207: Always disable SSLv2 except when PROTOCOL_SSLv2 is explicitly
- asked for.
+- Issue #21525: Most Tkinter methods which accepted tuples now accept lists too.
- - Issue #22166: with the assistance of a new internal _codecs._forget_codec
-- 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 #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 #20078: Reading malformed zipfiles no longer hangs with 100% CPU
- consumption.
+- Issue #22236: Tkinter tests now don't reuse default root window. New root
+ window is created for every test class.
-- Issue #20113: os.readv() and os.writev() now raise an OSError exception on
- error instead of returning -1.
+- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial
+ shape.
-- 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 #20826: Optimize ipaddress.collapse_addresses().
-- Issue #20144: inspect.Signature now supports parsing simple symbolic
- constants as parameter default values in __text_signature__.
+- Issue #21487: Optimize ipaddress.summarize_address_range() and
+ ipaddress.{IPv4Network,IPv6Network}.subnets().
-- Issue #20072: Fixed multiple errors in tkinter with wantobjects is False.
+- Issue #21486: Optimize parsing of netmasks in ipaddress.IPv4Network and
+ ipaddress.IPv6Network.
-- Issue #20229: Avoid plistlib deprecation warning in platform.mac_ver().
+- Issue #13916: Disallowed the surrogatepass error handler for non UTF-*
+ encodings.
-- Issue #14455: Fix some problems with the new binary plist support in plistlib.
+- Issue #20998: Fixed re.fullmatch() of repeated single character pattern
+ with ignore case. Original patch by Matthew Barnett.
-IDLE
-----
+- Issue #21075: fileinput.FileInput now reads bytes from standard stream if
+ binary mode is specified. Patch by Sam Kimbrel.
-- Issue #17390: Add Python version to Idle editor window title bar.
- Original patches by Edmond Burnett and Kent Johnson.
+- Issue #19775: Add a samefile() method to pathlib Path objects. Initial
+ patch by Vajrasky Kok.
-- Issue #18960: IDLE now ignores the source encoding declaration on the second
- line if the first line contains anything except a comment.
+- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject
+ (and friends).
-Tests
------
+- Issue #21398: Fix an unicode error in the pydoc pager when the documentation
+ contains characters not encodable to the stdout encoding.
-- Issue #20358: Tests for curses.window.overlay and curses.window.overwrite
- no longer specify min{row,col} > max{row,col}.
+- 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 #19804: The test_find_mac test in test_uuid is now skipped if the
- ifconfig executable is not available.
+- Issue #21156: importlib.abc.InspectLoader.source_to_code() is now a
+ staticmethod.
-- Issue #19886: Use better estimated memory requirements for bigmem tests.
+- Issue #21424: Simplified and optimized heaqp.nlargest() and nmsmallest()
+ to make fewer tuple comparisons.
-Tools/Demos
------------
+- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a
+ flush() on the underlying binary stream. Patch by akira.
-- Issue #20390: Argument Clinic's "file" output preset now defaults to
- "{dirname}/clinic/{basename}.h".
+- Issue #18314: Unlink now removes junctions on Windows. Patch by Kim Gräsman
-- Issue #20390: Argument Clinic's "class" directive syntax has been extended
- with two new required arguments: "typedef" and "type_object".
+- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0.
+ In porting to Argument Clinic, the first two arguments were reversed.
-- 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 #21407: _decimal: The module now supports function signatures.
-- Issue #20390: Argument Clinic now fails if you have required parameters after
- optional parameters.
+- 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 #21469: Reduced the risk of false positives in robotparser by
-- 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 #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 #20376: Argument Clinic now escapes backslashes in docstrings.
+- Issue #19414: Have the OrderedDict mark deleted links as unusable.
+ This gives an early failure if the link is deleted during iteration.
-- 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 #21421: Add __slots__ to the MappingViews ABC.
+ Patch by Josh Rosenberg.
-- 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 #21101: Eliminate double hashing in the C speed-up code for
+ collections.Counter().
-- Issue #20189: Argument Clinic now suppresses the docstring for __new__
- and __init__ functions if no docstring is provided in the input.
+- Issue #21321: itertools.islice() now releases the reference to the source
+ iterator when the slice is exhausted. Patch by Anton Afanasyev.
-- Issue #20189: Argument Clinic now suppresses the "self" parameter in the
- impl for @staticmethod functions.
+- 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 #20294: Argument Clinic now supports argument parsing for __new__ and
- __init__ 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 #20299: Argument Clinic custom converters may now change the default
- value of c_default and py_default with a class member.
+- Issue #13248: removed previously deprecated asyncore.dispatcher __getattr__
+ cheap inheritance hack.
-- Issue #20287: Argument Clinic's output is now configurable, allowing
- delaying its output or even redirecting it to a separate file.
+- Issue #9815: assertRaises now tries to clear references to local variables
+ in the exception's traceback.
-- Issue #20226: Argument Clinic now permits simple expressions
- (e.g. "sys.maxsize - 1") as default values for parameters.
+- 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 #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 #13204: Calling sys.flags.__new__ would crash the interpreter,
+ now it raises a TypeError.
-- Issue #20268: Argument Clinic now supports cloning the parameters and
- return converter of existing functions.
+- Issue #19385: Make operations on a closed dbm.dumb database always raise the
+ same exception.
-- Issue #20228: Argument Clinic now has special support for class special
- methods.
+- Issue #21207: Detect when the os.urandom cached fd has been closed or
+ replaced, and open it anew.
-- Issue #20214: Fixed a number of small issues and documentation errors in
- Argument Clinic (see issue for details).
+- 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 #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 #21127: Path objects can now be instantiated from str subclass
+ instances (such as ``numpy.str_``).
-- 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 #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 #19723: The marker comments Argument Clinic uses have been changed
- to improve readability.
+- 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 #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 #21068: The ssl.PROTOCOL* constants are now enum members.
-- Issue #20141: Improved Argument Clinic's support for the PyArg_Parse "O!"
- format unit.
+- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd.
-- Issue #20144: Argument Clinic now supports simple symbolic constants
- as parameter default values.
+- Issue #21262: New method assert_not_called for Mock.
+ It raises AssertionError if the mock has been called.
-- Issue #20143: The line numbers reported in Argument Clinic errors are
- now more accurate.
+- Issue #21238: New keyword argument `unsafe` to Mock. It raises
+ `AttributeError` incase of an attribute startswith assert or assret.
-- Issue #20142: Py_buffer variables generated by Argument Clinic are now
- initialized with a default value.
+- Issue #20896: ssl.get_server_certificate() now uses PROTOCOL_SSLv23, not
+ PROTOCOL_SSLv3, for maximum compatibility.
-Build
------
+- Issue #21239: patch.stopall() didn't work deterministically when the same
+ name was patched more than once.
-- Issue #12837: Silence a tautological comparison warning on OS X under Clang in
- socketmodule.c.
+- Issue #21203: Updated fileConfig and dictConfig to remove inconsistencies.
+ Thanks to Jure Koren for the patch.
+- Issue #21222: Passing name keyword argument to mock.create_autospec now
+ works.
-What's New in Python 3.4.0 Beta 2?
-==================================
+- Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX.
-Release date: 2014-01-05
+- 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.
-Core and Builtins
------------------
+- Issue #17826: setting an iterable side_effect on a mock function created by
+ create_autospec now works. Patch by Kushal Das.
-- Issue #17432: Drop UCS2 from names of Unicode functions in python3.def.
+- Issue #7776: Fix ``Host:`` header and reconnection when using
+ http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath.
-- Issue #19526: Exclude all new API from the stable ABI. Exceptions can be
- made if a need is demonstrated.
+- Issue #20968: unittest.mock.MagicMock now supports division.
+ Patch by Johannes Baiter.
-- Issue #19969: PyBytes_FromFormatV() now raises an OverflowError if "%c"
- argument is not in range [0; 255].
+- Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second
+ parameter. Bug reported by Guido Vranken.
-- 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 #21169: getpass now handles non-ascii characters that the
+ input stream encoding cannot encode by re-encoding using the
+ replace error handler.
-- 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 #21171: Fixed undocumented filter API of the rot13 codec.
+ Patch by Berker Peksag.
-- 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 #20539: Improved math.factorial error message for large positive inputs
+ and changed exception type (OverflowError -> ValueError) for large negative
+ inputs.
-- 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 #21172: isinstance check relaxed from dict to collections.Mapping.
-- Issue #17576: Deprecation warning emitted now when __int__() or __index__()
- return not int instance.
+- Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError
+ if path and sock are specified at the same time.
-- Issue #19932: Fix typo in import.h, missing whitespaces in function prototypes.
+- Issue #21136: Avoid unnecessary normalization of Fractions resulting from
+ power and other operations. Patch by Raymond Hettinger.
-- Issue #19736: Add module-level statvfs constants defined for GNU/glibc
- based systems.
+- Issue #17621: Introduce importlib.util.LazyLoader.
-- Issue #20097: Fix bad use of "self" in importlib's WindowsRegistryFinder.
+- Issue #21076: signal module constants were turned into enums.
+ Patch by Giampaolo Rodola'.
-- Issue #19729: In str.format(), fix recursive expansion in format spec.
+- Issue #20636: Improved the repr of Tkinter widgets.
-- Issue #19638: Fix possible crash / undefined behaviour from huge (more than 2
- billion characters) input strings in _Py_dg_strtod.
+- Issue #19505: The items, keys, and values views of OrderedDict now support
+ reverse iteration using reversed().
-Library
--------
+- Issue #21149: Improved thread-safety in logging cleanup during interpreter
+ shutdown. Thanks to Devin Jeanpierre for the patch.
-- Issue #20154: Deadlock in asyncio.StreamReader.readexactly().
+- Issue #21058: Fix a leak of file descriptor in
+ :func:`tempfile.NamedTemporaryFile`, close the file descriptor if
+ :func:`io.open` fails
-- Issue #16113: Remove sha3 module again.
+- Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing.
-- Issue #20111: pathlib.Path.with_suffix() now sanity checks the given suffix.
+- Issue #21013: Enhance ssl.create_default_context() when used for server side
+ sockets to provide better security by default.
-- Fix breakage in TestSuite.countTestCases() introduced by issue #11798.
+- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a
+ TypeError if the second argument is not a string or compiled regex.
-- Issue #20108: Avoid parameter name clash in inspect.getcallargs().
+- Issue #20633: Replace relative import by absolute import.
-- Issue #19918: Fix PurePath.relative_to() under Windows.
+- Issue #20980: Stop wrapping exception when using ThreadPool.
-- Issue #19422: Explicitly disallow non-SOCK_STREAM sockets in the ssl
- module, rather than silently let them emit clear text data.
+- Issue #21082: In os.makedirs, do not set the process-wide umask. Note this
+ changes behavior of makedirs when exist_ok=True.
-- Issue #20046: Locale alias table no longer contains entities which can be
- calculated. Generalized support of the euro modifier.
+- Issue #20990: Fix issues found by pyflakes for multiprocessing.
-- Issue #20027: Fixed locale aliases for devanagari locales.
+- 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 #20067: Tkinter variables now work when wantobjects is false.
+- Issue #21000: Improve the command-line interface of json.tool.
-- Issue #19020: Tkinter now uses splitlist() instead of split() in configure
- methods.
+- Issue #20995: Enhance default ciphers used by the ssl module to enable
+ better security an prioritize perfect forward secrecy.
-- 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 #20884: Don't assume that __file__ is defined on importlib.__init__.
-- Issue #19734: ensurepip now ignores all pip environment variables to avoid
- odd behaviour based on user configuration settings
+- Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests.
-- Fix TypeError on "setup.py upload --show-response".
+- Issue #20627: xmlrpc.client.ServerProxy is now a context manager.
-- Issue #20045: Fix "setup.py register --list-classifiers".
+- Issue #19165: The formatter module now raises DeprecationWarning instead of
+ PendingDeprecationWarning.
-- Issue #18879: When a method is looked up on a temporary file, avoid closing
- the file before the method is possibly called.
+- Issue #13936: Remove the ability of datetime.time instances to be considered
+ false in boolean contexts.
-- Issue #20037: Avoid crashes when opening a text file late at interpreter
- shutdown.
+- Issue 18931: selectors module now supports /dev/poll on Solaris.
+ Patch by Giampaolo Rodola'.
-- Issue #19967: Thanks to the PEP 442, asyncio.Future now uses a
- destructor to log uncaught exceptions, instead of the dedicated
- _TracebackLogger class.
+- 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.
-- Added a Task.current_task() class method to asyncio.
+- Issue #20574: Implement incremental decoder for cp65001 code (Windows code
+ page 65001, Microsoft UTF-8).
-- Issue #19850: Set SA_RESTART in asyncio when registering a signal
- handler to limit EINTR occurrences.
+- 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.
-- Implemented write flow control in asyncio for proactor event loop (Windows).
+- Issue #19157: Include the broadcast address in the usuable hosts for IPv6
+ in ipaddress.
-- Change write buffer in asyncio use to avoid O(N**2) behavior. Make
- write()/sendto() accept bytearray/memoryview.
+- 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 #20034: Updated alias mapping to most recent locale.alias file
- from X.org distribution using makelocalealias.py.
+- Issue #4931: distutils should not produce unhelpful "error: None" messages
+ anymore. distutils.util.grok_environment_error is kept but doc-deprecated.
-- Issue #5815: Fixed support for locales with modifiers. Fixed support for
- locale encodings with hyphens.
+- Issue #20875: Prevent possible gzip "'read' is not defined" NameError.
+ Patch by Claudiu Popa.
-- Issue #20026: Fix the sqlite module to handle correctly invalid isolation
- level (wrong type).
+- 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 #18829: csv.Dialect() now checks type for delimiter, escapechar and
- quotechar fields. Original patch by Vajrasky Kok.
+- 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 #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 #20778: Fix modulefinder to work with bytecode-only modules.
-- Issue #20007: HTTPResponse.read(0) no more prematurely closes connection.
- Original patch by Simon Sapin.
+- Issue #20791: copy.copy() now doesn't make a copy when the input is
+ a bytes object. Initial patch by Peter Otten.
-- 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 #19748: On AIX, time.mktime() now raises an OverflowError for year
+ outsize range [1902; 2037].
-- 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 #19573: inspect.signature: Use enum for parameter kind constants.
-- Issue #19887: Improve the Path.resolve() algorithm to support certain
- symlink chains.
+- Issue #20726: inspect.signature: Make Signature and Parameter picklable.
-- Issue #19912: Fixed numerous bugs in ntpath.splitunc().
+- Issue #17373: Add inspect.Signature.from_callable method.
-- Issue #19911: ntpath.splitdrive() now correctly processes the 'İ' character
- (U+0130, LATIN CAPITAL LETTER I WITH DOT ABOVE).
+- Issue #20378: Improve repr of inspect.Signature and inspect.Parameter.
-- Issue #19532: python -m compileall with no filename/directory arguments now
- respects the -f and -q flags instead of ignoring them.
+- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for
+ missing keyword-only arguments. Patch by Jeremiah Lowin.
-- Issue #19623: Fixed writing to unseekable files in the aifc module.
+- Issue #20817: Fix inspect.getcallargs() to fail correctly if more
+ than 3 arguments are missing. Patch by Jeremiah Lowin.
-- Issue #19946: multiprocessing.spawn now raises ImportError when the module to
- be used as the main module cannot be imported.
+- 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 #17919: select.poll.register() again works with poll.POLLNVAL on AIX.
- Fixed integer overflow in the eventmask parameter.
+- 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 #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 #20334: inspect.Signature and inspect.Parameter are now hashable.
+ Thanks to Antony Lee for bug reports and suggestions.
-- Issue #15475: Add __sizeof__ implementations for itertools objects.
+- Issue #15916: doctest.DocTestSuite returns an empty unittest.TestSuite instead
+ of raising ValueError if it finds no tests
-- Issue #19944: Fix importlib.find_spec() so it imports parents as needed
- and move the function to importlib.util.
+- Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug
+ in yield-from implementation in CPythons prior to 3.4.1.
-- Issue #19880: Fix a reference leak in unittest.TestCase. Explicitly break
- reference cycles between frames and the _Outcome instance.
+- asyncio: Add gi_{frame,running,code} properties to CoroWrapper
+ (upstream issue #163).
-- 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 #21311: Avoid exception in _osx_support with non-standard compiler
+ configurations. Patch by John Szakmeister.
-- Issue #19343: Expose FreeBSD-specific APIs in resource module. Original
- patch by Koobs.
+- Issue #11571: Ensure that the turtle window becomes the topmost window
+ when launched on OS X.
-- 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 #21801: Validate that __signature__ is None or an instance of Signature.
-- 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 #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler
+ due to possible uninitialized _config_vars.
-- Issue #19876: selectors unregister() no longer raises ValueError or OSError
- if the FD is closed (as long as it was registered).
+- 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 #19908: pathlib now joins relative Windows paths correctly when a drive
- is present. Original patch by Antoine Pitrou.
+- Issue #22733: Fix ffi_prep_args not zero-extending argument values correctly
+ on 64-bit Windows.
-- Issue #19296: Silence compiler warning in dbm_open
+- 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 #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.
+IDLE
+----
-- Issue #19839: Fix regression in bz2 module's handling of non-bzip2 data at
- EOF, and analogous bug in lzma module.
+- 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 #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 #16893: Update Idle doc chapter to match current Idle and add new
+ information.
-- 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 #3068: Add Idle extension configuration dialog to Options menu.
+ Changes are written to HOME/.idlerc/config-extensions.cfg.
+ Original patch by Tal Einat.
-- Issue #19927: Add __eq__ to path-based loaders in importlib.
+- 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
++ 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 #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.
+- 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 #19785: smtplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- 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 #19784: poplib 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 #19783: nntplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- Issue #14105: Idle debugger breakpoints no longer disappear
+ when inseting or deleting lines.
-- Issue #19782: imaplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- 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 #20123: Fix pydoc.synopsis() for "binary" modules.
+- Issue #21765: Add support for non-ascii identifiers to HyperParser.
-- Issue #19834: Support unpickling of exceptions pickled by Python 2.
+- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav
+ Heblikar.
-- Issue #19781: ftplib now supports SSLContext.check_hostname and server name
- indication for TLS/SSL connections.
+- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster.
-- Issue #19509: Add SSLContext.check_hostname to match the peer's certificate
- with server_hostname on handshake.
+- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar.
-- Issue #15798: Fixed subprocess.Popen() to no longer fail if file
- descriptor 0, 1 or 2 is closed.
+- Issue #21686: add unittest for HyperParser. Original patch by Saimadhav
+ Heblikar.
-- Issue #17897: Optimized unpickle prefetching.
+- 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 #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 #21695: Closing a Find-in-files output window while the search is
+ still in progress no longer closes Idle.
-- Issue #19088: Fixed incorrect caching of the copyreg module in
- object.__reduce__() and object.__reduce_ex__().
+- Issue #18910: Add unittest for textView. Patch by Phil Webster.
-- Issue #19698: Removed exec_module() methods from
- importlib.machinery.BuiltinImporter and ExtensionFileLoader.
+- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar.
-- Issue #18864: Added a setter for ModuleSpec.has_location.
+- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster.
-- Fixed _pickle.Unpickler to not fail when loading empty strings as
- persistent IDs.
+- Issue #21477: htest.py - Improve framework, complete set of tests.
+ Patches by Saimadhav Heblikar
-- Issue #11480: Fixed copy.copy to work with classes with custom metaclasses.
- Patch by Daniel Urban.
+- 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 #6477: Added support for pickling the types of built-in singletons
- (i.e., Ellipsis, NotImplemented, None).
+- Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation.
-- Issue #19713: Add remaining PEP 451-related deprecations and move away
- from using find_module/find_loaer/load_module.
+- Issue #21284: Paragraph reformat test passes after user changes reformat width.
-- Issue #19708: Update pkgutil to use the new importer APIs.
+- Issue #17654: Ensure IDLE menus are customized properly on OS X for
+ non-framework builds and for all variants of Tk.
-- Issue #19703: Update pydoc to use the new importer APIs.
+- Issue #23180: Rename IDLE "Windows" menu item to "Window".
+ Patch by Al Sweigart.
-- Issue #19851: Fixed a regression in reloading sub-modules.
+Build
+-----
-- ssl.create_default_context() sets OP_NO_COMPRESSION to prevent CRIME.
+- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure
+ script.
-- Issue #19802: Add socket.SO_PRIORITY.
+- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support
+ SSL 3.
-- Issue #11508: Fixed uuid.getnode() and uuid.uuid1() on environment with
- virtual interface. Original patch by Kent Frazier.
+- Issue #22592: Drop support of the Borland C compiler to build Python. The
+ distutils module still supports it to build extensions.
-- Issue #11489: JSON decoder now accepts lone surrogates.
+- Issue #22591: Drop support of MS-DOS, especially of the DJGPP compiler
+ (MS-DOS port of GCC).
-- Issue #19545: Avoid chained exceptions while passing stray % to
- time.strptime(). Initial patch by Claudiu Popa.
+- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by
+ Jonathan Hosmer.
-IDLE
-----
+- Issue #22359: Remove incorrect uses of recursive make. Patch by Jonas
+ Wagner.
-- Issue #20058: sys.stdin.readline() in IDLE now always returns only one line.
+- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and
+ above. Patch by Zachary Turner.
-- Issue #19481: print() of string subclass instance in IDLE no longer hangs.
+- 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 #18270: Prevent possible IDLE AttributeError on OS X when no initial
- shell window is present.
+- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/
+ now display special message when and only when there are failures.
-Tests
------
+- 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 #20055: Fix test_shutil under Windows with symlink privileges held.
- Patch by Vajrasky Kok.
+- Issue #21037: Add a build option to enable AddressSanitizer support.
-- Issue #20070: Don't run test_urllib2net when network resources are not
- enabled.
+- 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 #19938: Re-enabled test_bug_1333982 in test_dis, which had been
- disabled since 3.0 due to the changes in listcomp handling.
+- Issue #21285: Refactor and fix curses configure check to always search
+ in a ncursesw directory.
-- Issue #19320: test_tcl no longer fails when wantobjects is false.
+- 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 #19919: Fix flaky SSL test. connect_ex() sometimes returns
- EWOULDBLOCK on Windows or VMs hosted on Windows.
+- Issue #17861: Tools/scripts/generate_opcode_h.py automatically regenerates
+ Include/opcode.h from Lib/opcode.py if the later gets any change.
-- Issue #19912: Added tests for ntpath.splitunc().
+- 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 #19828: Fixed test_site when the whole suite is run with -S.
+- Issue #20022: Eliminate use of deprecated bundlebuilder in OS X builds.
-- Issue #19928: Implemented a test for repr() of cell objects.
+- Issue #15968: Incorporated Tcl, Tk, and Tix builds into the Windows build
+ solution.
-- Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and
- test_statistics when python is run with -OO.
+- Issue #17095: Fix Modules/Setup *shared* support.
-- Issue #19926: Removed unneeded test_main from test_abstract_numbers.
- Patch by Vajrasky Kok.
+- Issue #21811: Anticipated fixes to support OS X versions > 10.9.
-- Issue #19572: More skipped tests explicitly marked as skipped.
+- Issue #21166: Prevent possible segfaults and other random failures of
+ python --generate-posix-vars in pybuilddir.txt build target.
-- Issue #19595, #19987: Re-enabled a long-disabled test in test_winsound.
+- Issue #18096: Fix library order returned by python-config.
-- Issue #19588: Fixed tests in test_random that were silently skipped most
- of the time. Patch by Julian Gindi.
+- Issue #17219: Add library build dir for Python extension cross-builds.
-Build
+- Issue #22919: Windows build updated to support VC 14.0 (Visual Studio 2015),
+ which will be used for the official release.
+
+- Issue #21236: Build _msi.pyd with cabinet.lib instead of fci.lib
+
+- Issue #17128: Use private version of OpenSSL for OS X 10.5+ installer.
+
+C API
-----
-- Issue #19728: Enable pip installation by default on Windows.
+- 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 #16136: Remove VMS support
+- 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 #18215: Add script Tools/ssl/test_multiple_versions.py to compile and
- run Python's unit tests with multiple versions of OpenSSL.
+- Issue #22079: PyType_Ready() now checks that statically allocated type has
+ no dynamically allocated bases.
-- Issue #19922: define _INCLUDE__STDC_A1_SOURCE in HP-UX to include mbstate_t
- for mbrtowc().
+- Issue #22453: Removed non-documented macro PyObject_REPR().
-- 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 #18395: Rename ``_Py_char2wchar()`` to :c:func:`Py_DecodeLocale`,
+ rename ``_Py_wchar2char()`` to :c:func:`Py_EncodeLocale`, and document
+ these functions.
+
+- 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 #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().
Documentation
-------------
Library
-------
-- Issue #15882: Change `_decimal` to accept any coefficient tuple when
- constructing infinities. This is done for backwards compatibility with
- decimal.py: Infinity coefficients are undefined in _decimal (in accordance
- with the specification).
-
-- Issue #15925: Fix a regression in `email.util` where the `parsedate()` and
- `parsedate_tz()` functions did not return None anymore when the argument could
- not be parsed.
-
-Extension Modules
------------------
-
-- Issue #15973: Fix a segmentation fault when comparing datetime timezone
- objects.
-
-- Issue #15977: Fix memory leak in Modules/_ssl.c when the function
- _set_npn_protocols() is called multiple times, thanks to Daniel Sommermann.
-
-- Issue #15969: `faulthandler` module: rename dump_tracebacks_later() to
- dump_traceback_later() and cancel_dump_tracebacks_later() to
- cancel_dump_traceback_later().
-
-- _decimal module: use only C 89 style comments.
+- 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 #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.
-What's New in Python 3.3.0 Release Candidate 2?
-===============================================
+- Issue #20311: selectors: Add a resolution attribute to BaseSelector.
-*Release date: 09-Sep-2012*
+- 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.
-Core and Builtins
------------------
+- 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 #13992: The trashcan mechanism is now thread-safe. This eliminates
- sporadic crashes in multi-thread programs when several long deallocator chains
- ran concurrently and involved subclasses of built-in container types.
+- Issue #20374: Fix build with GNU readline >= 6.3.
-- Issue #15784: Modify `OSError`.__str__() to better distinguish between errno
- error numbers and Windows error numbers.
+- Issue #20262: Warnings are raised now when duplicate names are added in the
+ ZIP file or too long ZIP file comment is truncated.
-- Issue #15781: Fix two small race conditions in import's module locking.
+- Issue #20165: The unittest module no longer considers tests marked with
+ @expectedFailure successful if they pass.
-Library
--------
+- Issue #18574: Added missing newline in 100-Continue reply from
+ http.server.BaseHTTPRequestHandler. Patch by Nikolaus Rath.
-- Issue #17158: Add 'symbols' to help() welcome message; clarify
- 'modules spam' messages.
+- Issue #20270: urllib.urlparse now supports empty ports.
-- Issue #15847: Fix a regression in argparse, which did not accept tuples as
- argument lists anymore.
+- Issue #20243: TarFile no longer raise ReadError when opened in write mode.
-- Issue #15828: Restore support for C extensions in `imp.load_module()`.
+- Issue #20238: TarFile opened with external fileobj and "w:gz" mode didn't
+ write complete output on close.
-- Issue #15340: Fix importing the random module when ``/dev/urandom`` cannot be
- opened. This was a regression caused by the hash randomization patch.
+- Issue #20245: The open functions in the tarfile module now correctly handle
+ empty mode.
-- Issue #10650: Deprecate the watchexp parameter of the `Decimal.quantize()`
- method.
+- Issue #20242: Fixed basicConfig() format strings for the alternative
+ formatting styles. Thanks to kespindler for the bug report and patch.
-- Issue #15785: Modify `window.get_wch()` API of the curses module: return a
- character for most keys, and an integer for special keys, instead of always
- returning an integer. So it is now possible to distinguish special keys like
- keypad keys.
+- Issue #20246: Fix buffer overflow in socket.recvfrom_into.
-- Issue #14223: Fix `window.addch()` of the curses module for special characters
- like curses.ACS_HLINE: the Python function addch(int) and addch(bytes) is now
- calling the C function waddch()/mvwaddch() (as it was done in Python 3.2),
- instead of wadd_wch()/mvwadd_wch(). The Python function addch(str) is still
- calling the C function wadd_wch()/mvwadd_wch() if the Python curses is linked
- to libncursesw.
+- 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.
-Build
------
+- Issue #19082: Working xmlrpc.server and xmlrpc.client examples. Both in
+ modules and in documentation. Initial patch contributed by Vajrasky Kok.
-- Issue #15822: Really ensure 2to3 grammar pickles are properly installed
- (replaces fixes for Issue #15645).
+- Issue #20138: The wsgiref.application_uri() and wsgiref.request_uri()
+ functions now conform to PEP 3333 when handle non-ASCII URLs.
-Documentation
--------------
+- Issue #19097: Raise the correct Exception when cgi.FieldStorage is given an
+ invalid fileobj.
-- Issue #15814: The memoryview enhancements in 3.3.0 accidentally permitted the
- hashing of multi-dimensional memorviews and memoryviews with multi-byte item
- formats. The intended restrictions have now been documented - they will be
- correctly enforced in 3.3.1.
+- Issue #20152: Ported Python/import.c over to Argument Clinic.
+- 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.
-What's New in Python 3.3.0 Release Candidate 1?
-===============================================
+- Issue #20207: Always disable SSLv2 except when PROTOCOL_SSLv2 is explicitly
+ asked for.
-*Release date: 25-Aug-2012*
+- Issue #18960: The tokenize module now ignore the source encoding declaration
+ on the second line if the first line contains anything except a comment.
-Core and Builtins
------------------
+- Issue #20078: Reading malformed zipfiles no longer hangs with 100% CPU
+ consumption.
-- Issue #15573: memoryview comparisons are now performed by value with full
- support for any valid struct module format definition.
+- Issue #20113: os.readv() and os.writev() now raise an OSError exception on
+ error instead of returning -1.
-- Issue #15316: When an item in the fromlist for `__import__()` doesn't exist,
- don't raise an error, but if an exception is raised as part of an import do
- let that propagate.
+- 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 #15778: Ensure that ``str(ImportError(msg))`` returns a str even when
- msg isn't a str.
+- Issue #20144: inspect.Signature now supports parsing simple symbolic
+ constants as parameter default values in __text_signature__.
-- Issue #2051: Source file permission bits are once again correctly copied to
- the cached bytecode file. (The migration to importlib reintroduced this
- problem because these was no regression test. A test has been added as part of
- this patch)
+- Issue #20072: Fixed multiple errors in tkinter with wantobjects is False.
-- Issue #15761: Fix crash when ``PYTHONEXECUTABLE`` is set on Mac OS X.
+- Issue #20229: Avoid plistlib deprecation warning in platform.mac_ver().
-- Issue #15726: Fix incorrect bounds checking in PyState_FindModule. Patch by
- Robin Schreiber.
+- Issue #14455: Fix some problems with the new binary plist support in plistlib.
-- Issue #15604: Update uses of `PyObject_IsTrue()` to check for and handle
- errors correctly. Patch by Serhiy Storchaka.
+IDLE
+----
-- Issue #14846: `importlib.FileFinder` now handles the case where the directory
- being searched is removed after a previous import attempt.
+- Issue #17390: Add Python version to Idle editor window title bar.
+ Original patches by Edmond Burnett and Kent Johnson.
-Library
--------
+- Issue #18960: IDLE now ignores the source encoding declaration on the second
+ line if the first line contains anything except a comment.
-- Issue #13370: Ensure that ctypes works on Mac OS X when Python is compiled
- using the clang compiler.
+Tests
+-----
-- Issue #13072: The array module's 'u' format code is now deprecated and will be
- removed in Python 4.0.
+- Issue #20358: Tests for curses.window.overlay and curses.window.overwrite
+ no longer specify min{row,col} > max{row,col}.
-- Issue #15544: Fix Decimal.__float__ to work with payload-carrying NaNs.
+- Issue #19804: The test_find_mac test in test_uuid is now skipped if the
+ ifconfig executable is not available.
-- Issue #15776: Allow pyvenv to work in existing directory with --clean.
+- Issue #19886: Use better estimated memory requirements for bigmem tests.
-- Issue #15249: email's BytesGenerator now correctly mangles From lines (when
- requested) even if the body contains undecodable bytes.
+Tools/Demos
+-----------
-- Issue #15777: Fix a refleak in _posixsubprocess.
+- Issue #20390: Argument Clinic's "file" output preset now defaults to
+ "{dirname}/clinic/{basename}.h".
-- Issue ##665194: Update `email.utils.localtime` to use datetime.astimezone and
- correctly handle historic changes in UTC offsets.
+- Issue #20390: Argument Clinic's "class" directive syntax has been extended
- with two new required arguments: "typedef" and "type_object".
++ with two new required arguments: "typedef" and "type_object".
-- Issue #15199: Fix JavaScript's default MIME type to application/javascript.
- Patch by Bohuslav Kabrda.
+- 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 #12643: `code.InteractiveConsole` now respects `sys.excepthook` when
- displaying exceptions. Patch by Aaron Iles.
+- Issue #20390: Argument Clinic now fails if you have required parameters after
+ optional parameters.
-- Issue #13579: `string.Formatter` now understands the 'a' conversion specifier.
+- 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 #15595: Fix ``subprocess.Popen(universal_newlines=True)`` for certain
- locales (utf-16 and utf-32 family). Patch by Chris Jerdonek.
+- Issue #20376: Argument Clinic now escapes backslashes in docstrings.
-- Issue #15477: In cmath and math modules, add workaround for platforms whose
- system-supplied log1p function doesn't respect signs of zeros.
+- 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 #15715: `importlib.__import__()` will silence an ImportError when the
- use of fromlist leads to a failed import.
+- 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 #14669: Fix pickling of connections and sockets on Mac OS X by
- sending/receiving an acknowledgment after file descriptor transfer.
- TestPicklingConnection has been reenabled for Mac OS X.
+- Issue #20189: Argument Clinic now suppresses the docstring for __new__
+ and __init__ functions if no docstring is provided in the input.
-- Issue #11062: Fix adding a message from file to Babyl mailbox.
+- Issue #20189: Argument Clinic now suppresses the "self" parameter in the
+ impl for @staticmethod functions.
-- Issue #15646: Prevent equivalent of a fork bomb when using `multiprocessing`
- on Windows without the ``if __name__ == '__main__'`` idiom.
+- Issue #20294: Argument Clinic now supports argument parsing for __new__ and
+ __init__ functions.
-IDLE
-----
+- Issue #20299: Argument Clinic custom converters may now change the default
+ value of c_default and py_default with a class member.
-- Issue #15678: Fix IDLE menus when started from OS X command line (3.3.0b2
- regression).
+- Issue #20287: Argument Clinic's output is now configurable, allowing
+ delaying its output or even redirecting it to a separate file.
-Documentation
--------------
+- Issue #20226: Argument Clinic now permits simple expressions
+ (e.g. "sys.maxsize - 1") as default values for parameters.
-- Touched up the Python 2 to 3 porting guide.
+- 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 #14674: Add a discussion of the `json` module's standard compliance.
- Patch by Chris Rebert.
+- Issue #20268: Argument Clinic now supports cloning the parameters and
+ return converter of existing functions.
-- Create a 'Concurrent Execution' section in the docs, and split up the
- 'Optional Operating System Services' section to use a more user-centric
- classification scheme (splitting them across the new CE section, IPC and text
- processing). Operating system limitations can be reflected with the Sphinx
- ``:platform:`` tag, it doesn't make sense as part of the Table of Contents.
+- Issue #20228: Argument Clinic now has special support for class special
+ methods.
-- Issue #4966: Bring the sequence docs up to date for the Py3k transition and
- the many language enhancements since they were original written.
+- Issue #20214: Fixed a number of small issues and documentation errors in
+ Argument Clinic (see issue for details).
-- The "path importer" misnomer has been replaced with Eric Snow's
- more-awkward-but-at-least-not-wrong suggestion of "path based finder" in the
- import system reference docs.
+- 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 #15640: Document `importlib.abc.Finder` as deprecated.
+- 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 #15630: Add an example for "continue" stmt in the tutorial. Patch by
- Daniel Ellis.
+- Issue #19723: The marker comments Argument Clinic uses have been changed
+ to improve readability.
-Tests
------
+- 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 #15747: ZFS always returns EOPNOTSUPP when attempting to set the
- UF_IMMUTABLE flag (via either chflags or lchflags); refactor affected tests in
- test_posix.py to account for this.
+- Issue #20141: Improved Argument Clinic's support for the PyArg_Parse "O!"
+ format unit.
-- Issue #15285: Refactor the approach for testing connect timeouts using two
- external hosts that have been configured specifically for this type of test.
+- Issue #20144: Argument Clinic now supports simple symbolic constants
+ as parameter default values.
-- Issue #15743: Remove the deprecated method usage in `urllib` tests. Patch by
- Jeff Knupp.
+- Issue #20143: The line numbers reported in Argument Clinic errors are
+ now more accurate.
-- Issue #15615: Add some tests for the `json` module's handling of invalid input
- data. Patch by Kushal Das.
+- Issue #20142: Py_buffer variables generated by Argument Clinic are now
+ initialized with a default value.
Build
-----
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 #18764: remove the 'print' alias for the PDB 'p' command so that it no
-- 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 #19158: a rare race in BoundedSemaphore could allow .release() too
-- 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
-----
projects / python / commitdiff