Library
-------
-- Issue #23399: pyvenv creates relative symlinks where possible.
+- Issue #21750: mock_open.read_data can now be read from each instance, as it
+ could in Python 3.3.
-- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to
- prevent corrupting exported buffer.
+- Issue #24552: Fix use after free in an error case of the _pickle module.
-- Issue #23363: Fix possible overflow in itertools.permutations.
+- Issue #24514: tarfile now tolerates number fields consisting of only
+ whitespace.
-- Issue #23364: Fix possible overflow in itertools.product.
+- Issue #19176: Fixed doctype() related bugs in C implementation of ElementTree.
+ A deprecation warning no longer issued by XMLParser subclass with default
+ doctype() method. Direct call of doctype() now issues a warning. Parser's
+ doctype() now is not called if target's doctype() is called. Based on patch
+ by Martin Panter.
-- Issue #23366: Fixed possible integer overflow in itertools.combinations.
+- Issue #20387: Restore semantic round-trip correctness in tokenize/untokenize
+ for tab-indented blocks.
-- Issue #23369: Fixed possible integer overflow in
- _json.encode_basestring_ascii.
+- Issue #24456: Fixed possible buffer over-read in adpcm2lin() and lin2adpcm()
+ functions of the audioop module.
-- 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 #24336: The contextmanager decorator now works with functions with
+ keyword arguments called "func" and "self". Patch by Martin Panter.
-- Issue #18518: timeit now rejects statements which can't be compiled outside
- a function or a loop (e.g. "return" or "break").
+- Issue #24522: Fix possible integer overflow in json accelerator module.
-- Issue #23094: Fixed readline with frames in Python implementation of pickle.
+- Issue #24489: ensure a previously set C errno doesn't disturb cmath.polar().
-- Issue #23268: Fixed bugs in the comparison of ipaddress classes.
+- Issue #24408: Fixed AttributeError in measure() and metrics() methods of
+ tkinter.Font.
-- Issue #21408: Removed incorrect implementations of __ne__() which didn't
- returned NotImplemented if __eq__() returned NotImplemented. The default
- __ne__() now works correctly.
+- Issue #14373: C implementation of functools.lru_cache() now can be used with
+ methods.
-- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed)
- headers with no key rather than assuming the body has started.
+- Issue #24347: Set KeyError if PyDict_GetItemWithError returns NULL.
-- Issue #23248: Update ssl error codes from latest OpenSSL git master.
+- Issue #24348: Drop superfluous incref/decref.
-- Issue #23098: 64-bit dev_t is now supported in the os module.
+- Issue #24359: Check for changed OrderedDict size during iteration.
-- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure"
- as they are written in the standard.
+- Issue #24368: Support keyword arguments in OrderedDict methods.
-- Issue #23063: In the disutils' check command, fix parsing of reST with code or
- code-block directives.
+- Issue #24362: Simplify the C OrderedDict fast nodes resize logic.
-- 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 #24377: Fix a ref leak in OrderedDict.__repr__.
-- 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 #24369: Defend against key-changes during iteration.
-- 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.
+Tests
+-----
-- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol
- version.
+- 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 #23132: Mitigate regression in speed and clarity in functools.total_ordering.
+Documentation
+-------------
-- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(),
- instead of reading /dev/urandom, to get pseudo-random bytes.
+- Issue #24458: Update documentation to cover multi-phase initialization for
+ extension modules (PEP 489). Patch by Petr Viktorin.
-- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and
- fragment when it redirects to add a trailing slash.
+- Issue #24351: Clarify what is meant by "identifier" in the context of
+ string.Template instances.
-- Issue #23093: In the io, module allow more operations to work on detached
- streams.
+Build
+-----
-- Issue #19104: pprint now produces evaluable output for wrapped strings.
+- Issue #24432: Update Windows builds and OS X 10.5 installer to use OpenSSL
+ 1.0.2c.
-- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter.
-- Issue #15513: Added a __sizeof__ implementation for pickle classes.
+What's New in Python 3.5.0 beta 2?
+==================================
-- 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.
+Release date: 2015-05-31
-- Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port
- value in the host header was set to "None". Patch by Demian Brecht.
+Core and Builtins
+-----------------
-- Issue #23016: A warning no longer produces an AttributeError when the program
- is run with pythonw.exe.
+- 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 #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 #24115: Update uses of PyObject_IsTrue(), PyObject_Not(),
+ PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains()
+ to check for and handle errors correctly.
-- Issue #1218234: Fix inspect.getsource() to load updated source of
- reloaded module. Initial patch by Berker Peksag.
+- Issue #24328: Fix importing one character extension modules.
-- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the
- context's check_hostname attribute over the *check_hostname* parameter.
+- Issue #11205: In dictionary displays, evaluate the key before the value.
-- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode
- will return. This resolves CVE-2013-1753.
+- Issue #24285: Fixed regression that prevented importing extension modules
+ from inside packages. Patch by Petr Viktorin.
-- 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.
+Library
+-------
-- Issue #21971: Update turtledemo doc and add module to the index.
+- Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs.
-- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails.
- Original patch by Martin Panter.
+- Issue #24270: Add math.isclose() and cmath.isclose() functions as per PEP 485.
+ Contributed by Chris Barker and Tal Einat.
-- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor.
+- Issue #5633: Fixed timeit when the statement is a string and the setup is not.
-- Issue #22915: SAX parser now supports files opened with file descriptor or
- bytes path.
+- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument.
+ Original patch by David Moore.
-- Issue #22609: Constructors and update methods of mapping classes in the
- collections module now accept the self keyword argument.
+- Issue #16991: Add a C implementation of OrderedDict.
-- Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler.
+- Issue #23934: Fix inspect.signature to fail correctly for builtin types
+ lacking signature information. Initial patch by James Powell.
-- Issue #22921: Allow SSLContext to take the *hostname* parameter even if
- OpenSSL doesn't support SNI.
-- Issue #22894: TestCase.subTest() would cause the test suite to be stopped
- when in failfast mode, even in the absence of failures.
+What's New in Python 3.5.0 beta 1?
+==================================
-- Issue #22638: SSLv3 is now disabled throughout the standard library.
- It can still be enabled by instantiating a SSLContext manually.
+Release date: 2015-05-24
-- Issue #22370: Windows detection in pathlib is now more robust.
+Core and Builtins
+-----------------
-- Issue #22841: Reject coroutines in asyncio add_signal_handler().
- Patch by Ludovic.Gasc.
+- Issue #24276: Fixed optimization of property descriptor getter.
-- Issue #22849: Fix possible double free in the io.TextIOWrapper constructor.
+- Issue #24268: PEP 489: Multi-phase extension module initialization.
+ Patch by Petr Viktorin.
-- Issue #12728: Different Unicode characters having the same uppercase but
- different lowercase are now matched in case-insensitive regular expressions.
-
-- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian
- platforms.
+- Issue #23955: Add pyvenv.cfg option to suppress registry/environment
+ lookup for generating sys.path on Windows.
-- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x.
- Based on patch by Martin Panter.
+- Issue #24257: Fixed system error in the comparison of faked
+ types.SimpleNamespace.
-- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat.
- Based on patch by Aivars Kalvāns.
+- Issue #22939: Fixed integer overflow in iterator object. Patch by
+ Clement Rouault.
-- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments.
+- 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 #22417: Verify certificates by default in httplib (PEP 476).
+- Issue #24102: Fixed exception type checking in standard error handlers.
-- Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2
- and above. Patch by Tim Graham.
+- Issue #15027: The UTF-32 encoder is now 3x to 7x faster.
-- 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 #23290: Optimize set_merge() for cases where the target is empty.
+ (Contributed by Serhiy Storchaka.)
-- Issue #22776: Brought excluded code into the scope of a try block in
- SysLogHandler.emit().
+- Issue #2292: PEP 448: Additional Unpacking Generalizations.
-- Issue #22665: Add missing get_terminal_size and SameFileError to
- shutil.__all__.
+- Issue #24096: Make warnings.warn_explicit more robust against mutation of the
+ warnings.filters list.
-- Issue #17381: Fixed handling of case-insensitive ranges in regular
- expressions.
+- Issue #23996: Avoid a crash when a delegated generator raises an
+ unnormalized StopIteration exception. Patch by Stefan Behnel.
-- Issue #22410: Module level functions in the re module now cache compiled
- locale-dependent regular expressions taking into account the locale.
+- Issue #23910: Optimize property() getter calls. Patch by Joe Jevnik.
-- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.)
- now return False when the underlying stat call raises NotADirectoryError.
+- Issue #23911: Move path-based importlib bootstrap code to a separate
+ frozen module.
-- 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 #24192: Fix namespace package imports.
-- Issue #18853: Fixed ResourceWarning in shlex.__nain__.
+- Issue #24022: Fix tokenizer crash when processing undecodable source code.
-- Issue #9351: Defaults set with set_defaults on an argparse subparser
- are no longer ignored when also set on the parent parser.
+- Issue #9951: Added a hex() method to bytes, bytearray, and memoryview.
-- 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 #22906: PEP 479: Change StopIteration handling inside generators.
-- Issue #22641: In asyncio, the default SSL context for client connections
- is now created using ssl.create_default_context(), for stronger security.
+- Issue #24017: PEP 492: Coroutines with async and await syntax.
-- Issue #22435: Fix a file descriptor leak when SocketServer bind fails.
+Library
+-------
-- Issue #13096: Fixed segfault in CTypes POINTER handling of large
- values.
+- Issue #14373: Added C implementation of functools.lru_cache(). Based on
+ patches by Matt Joiner and Alexey Kachayev.
-- Issue #11694: Raise ConversionError in xdrlib as documented. Patch
- by Filip Gruszczyński and Claudiu Popa.
+- 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 #22462: Fix pyexpat's creation of a dummy frame to make it
- appear in exception tracebacks.
+- Issue #22189: collections.UserString now supports __getnewargs__(),
+ __rmod__(), casefold(), format_map(), isprintable(), and maketrans().
+ Patch by Joe Jevnik.
-- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called
- with an iterator alive.
+- Issue #24244: Prevents termination when an invalid format string is
+ encountered on Windows in strftime.
-- Issue #11866: Eliminated race condition in the computation of names
- for new threads.
+- Issue #23973: PEP 484: Add the typing module.
-- Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules
- is mutated while iterating. Patch by Olivier Grisel.
+- Issue #23086: The collections.abc.Sequence() abstract base class added
+ *start* and *stop* parameters to the index() mixin.
+ Patch by Devin Jeanpierre.
-- Issue #22219: The zipfile module CLI now adds entries for directories
- (including empty directories) in ZIP file.
+- 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 #22449: In the ssl.SSLContext.load_default_certs, consult the
- environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows.
+- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked
+ cursor type.
-- Issue #20076: Added non derived UTF-8 aliases to locale aliases table.
+- 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 #20079: Added locales supported in glibc 2.18 to locale alias table.
+- Issue #9858: Add missing method stubs to _io.RawIOBase. Patch by Laura
+ Rupprecht.
-- 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 #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 #22517: When a io.BufferedRWPair object is deallocated, clear its
- weakrefs.
+- 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 #22448: Improve canceled timer handles cleanup to prevent
- unbound memory usage. Patch by Joshua Moore-Oliva.
+- Issue #23780: Improved error message in os.path.join() with single argument.
-- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no
- FD is registered.
+- Issue #6598: Increased time precision and random number range in
+ email.utils.make_msgid() to strengthen the uniqueness of the message ID.
-IDLE
-----
+- Issue #24091: Fixed various crashes in corner cases in C implementation of
+ ElementTree.
-- 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 #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 #16893: Update Idle doc chapter to match current Idle and add new
- information.
+- Issue #13866: *quote_via* argument added to urllib.parse.urlencode.
-- 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 #20098: New mangle_from policy option for email, default True
+ for compat32, but False for all other policies.
-- Issue #16233: A module browser (File : Class Browser, Alt+C) requires an
- editor window with a filename. When Class Browser is requested otherwise,
- from a shell, output window, or 'Untitled' editor, Idle no longer displays
- an error box. It now pops up an Open Module box (Alt+M). If a valid name
- is entered and a module is opened, a corresponding browser is also opened.
+- Issue #24211: The email library now supports RFC 6532: it can generate
+ headers using utf-8 instead of encoded words.
-- 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 #16314: Added support for the LZMA compression in distutils.
-- 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 #21804: poplib now supports RFC 6856 (UTF8).
-- Issue #23180: Rename IDLE "Windows" menu item to "Window".
- Patch by Al Sweigart.
+- Issue #18682: Optimized pprint functions for builtin scalar types.
-Tests
------
+- Issue #22027: smtplib now supports RFC 6531 (SMTPUTF8).
-- Issue #23392: Added tests for marshal C API that works with FILE*.
+- Issue #23488: Random generator objects now consume 2x less memory on 64-bit.
-- Issue #18982: Add tests for CLI of the calendar module.
+- Issue #1322: platform.dist() and platform.linux_distribution() functions are
+ now deprecated. Initial patch by Vajrasky Kok.
-- Issue #19548: Added some additional checks to test_codecs to ensure that
- statements in the updated documentation remain accurate. Patch by Martin
- Panter.
+- Issue #22486: Added the math.gcd() function. The fractions.gcd() function now is
+ deprecated. Based on patch by Mark Dickinson.
-- Issue #22838: All test_re tests now work with unittest test discovery.
+- Issue #24064: Property() docstrings are now writeable.
+ (Patch by Berker Peksag.)
-- Issue #22173: Update lib2to3 tests to use unittest test discovery.
+- Issue #22681: Added support for the koi8_t encoding.
-- Issue #16000: Convert test_curses to use unittest.
+- Issue #22682: Added support for the kz1048 encoding.
-- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not
- present. Patch by Remi Pointel.
+- Issue #23796: peek and read1 methods of BufferedReader now raise ValueError
+ if they called on a closed object. Patch by John Hergenroeder.
-- Issue #22770: Prevent some Tk segfaults on OS X when running gui tests.
+- Issue #21795: smtpd now supports the 8BITMIME extension whenever
+ the new *decode_data* constructor argument is set to False.
-- Issue #23211: Workaround test_logging failure on some OS X 10.6 systems.
+- Issue #24155: optimize heapq.heapify() for better cache performance
+ when heapifying large lists.
-- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level
- values (like 0.9.8zc).
+- Issue #21800: imaplib now supports RFC 5161 (enable), RFC 6855
+ (utf8/internationalized email) and automatically encodes non-ASCII
+ usernames and passwords to UTF8.
-- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout.
+- Issue #20274: When calling a _sqlite.Connection, it now complains if passed
+ any keyword arguments. Previously it silently ignored them.
-Build
------
+- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three
+ METH_VARARGS methods on _sqlite.Connection.
-- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure
- script.
+- 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 #22935: Allow the ssl module to be compiled if openssl doesn't support
- SSL 3.
+- Issue #24018: Add a collections.abc.Generator abstract base class.
+ Contributed by Stefan Behnel.
-- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by
- Jonathan Hosmer.
+- Issue #23880: Tkinter's getint() and getdouble() now support Tcl_Obj.
+ Tkinter's getdouble() now supports any numbers (in particular int).
-- Issue #18096: Fix library order returned by python-config.
+- Issue #22619: Added negative limit support in the traceback module.
+ Based on patch by Dmitry Kazakov.
-- Issue #17219: Add library build dir for Python extension cross-builds.
+- Issue #24094: Fix possible crash in json.encode with poorly behaved dict
+ subclasses.
-- Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer.
+- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes.
+ Patch written by William Orr.
-C API
------
+- Issue #17445: add difflib.diff_bytes() to support comparison of
+ byte strings (fixes a regression from Python 2).
-- Issue #22079: PyType_Ready() now checks that statically allocated type has
- no dynamically allocated bases.
+- Issue #23917: Fall back to sequential compilation when ProcessPoolExecutor
+ doesn't exist. Patch by Claudiu Popa.
-Documentation
--------------
+- Issue #23008: Fixed resolving attributes with boolean value is False in pydoc.
-- 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.
+- 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 #22914: Update the Python 2/3 porting HOWTO to describe a more automated
- approach.
+- Issue #23908: os functions now reject paths with embedded null character
+ on Windows instead of silently truncate them.
-- Issue #21514: The documentation of the json module now refers to new JSON RFC
- 7159 instead of obsoleted RFC 4627.
+- Issue #23728: binascii.crc_hqx() could return an integer outside of the range
+ 0-0xffff for empty data.
-Tools/Demos
------------
+- Issue #23887: urllib.error.HTTPError now has a proper repr() representation.
+ Patch by Berker Peksag.
-- Issue #22314: pydoc now works when the LINES environment variable is set.
+- asyncio: New event loop APIs: set_task_factory() and get_task_factory().
-Windows
--------
+- asyncio: async() function is deprecated in favour of ensure_future().
-- Issue #17896: The Windows build scripts now expect external library sources
- to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``.
+- Issue #24178: asyncio.Lock, Condition, Semaphore, and BoundedSemaphore
+ support new 'async with' syntax. Contributed by Yury Selivanov.
-- Issue #17717: The Windows build scripts now use a copy of NASM pulled from
- svn.python.org to build OpenSSL.
+- Issue #24179: Support 'async for' for asyncio.StreamReader.
+ Contributed by Yury Selivanov.
-- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j.
+- Issue #24184: Add AsyncIterator and AsyncIterable ABCs to
+ collections.abc. Contributed by Yury Selivanov.
+- Issue #22547: Implement informative __repr__ for inspect.BoundArguments.
+ Contributed by Yury Selivanov.
-What's New in Python 3.4.2?
-===========================
+- Issue #24190: Implement inspect.BoundArgument.apply_defaults() method.
+ Contributed by Yury Selivanov.
-Release date: 2014-10-06
+- Issue #20691: Add 'follow_wrapped' argument to
+ inspect.Signature.from_callable() and inspect.signature().
+ Contributed by Yury Selivanov.
-Library
--------
+- Issue #24248: Deprecate inspect.Signature.from_function() and
+ inspect.Signature.from_builtin().
-- Issue #10510: distutils register and upload methods now use HTML standards
- compliant CRLF line endings.
+- Issue #23898: Fix inspect.classify_class_attrs() to support attributes
+ with overloaded __eq__ and __bool__. Patch by Mike Bayer.
-- Issue #9850: Fixed macpath.join() for empty first component. Patch by
- Oleg Oshmyan.
+- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers
+ around bound methods.
-- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when
- used in the with statement in generator.
+IDLE
+----
-- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS
- directory attributes.
+- Issue #23184: remove unused names and imports in idlelib.
+ Initial patch by Al Sweigart.
-- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory
- records if allowZip64 is false.
+Tests
+-----
-- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re
- module. Removed trailing spaces in debugging output.
+- Issue #21520: test_zipfile no longer fails if the word 'bad' appears
+ anywhere in the name of the current directory.
-- Issue #22423: Unhandled exception in thread no longer causes unhandled
- AttributeError when sys.stderr is None.
+- Issue #9517: Move script_helper into the support package.
+ Patch by Christie Wilson.
-- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects
- line buffering, rather than block buffering. Patch by Akira Li.
+Documentation
+-------------
+- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter
+ doc. Remove obsolete example from FAQ. Patch by Martin Panter.
-What's New in Python 3.4.2rc1?
-==============================
+- Issue #24029: Document the name binding behavior for submodule imports.
-Release date: 2014-09-22
+- Issue #24077: Fix typo in man page for -I command option: -s, not -S
-Core and Builtins
------------------
+Tools/Demos
+-----------
-- Issue #22258: Fix the the internal function set_inheritable() on Illumos.
- This platform exposes the function ``ioctl(FIOCLEX)``, but calling it fails
- with errno is ENOTTY: "Inappropriate ioctl for device". set_inheritable()
- now falls back to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``).
+- Issue #24000: Improved Argument Clinic's mapping of converters to legacy
+ "format units". Updated the documentation to match.
-- 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 #24001: Argument Clinic converters now use accept={type}
+ instead of types={'type'} to specify the types the converter accepts.
-- Issue #21642: In 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 #23330: h2py now supports arbitrary filenames in #include.
-- 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 #24031: make patchcheck now supports git checkouts, too.
-Library
--------
-- 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.
+What's New in Python 3.5.0 alpha 4?
+===================================
-- Issue #21079: Fix email.message.EmailMessage.is_attachment to return the
- correct result when the header has parameters as well as a value.
+Release date: 2015-04-19
-- Issue #22247: Add NNTPError to nntplib.__all__.
+Core and Builtins
+-----------------
-- Issue #4180: The warnings registries are now reset when the filters
- are modified.
+- 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 #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 #22631: Added Linux-specific socket constant CAN_RAW_FD_FRAMES.
+ Patch courtesy of Joe Jevnik.
-- 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 #23731: Implement PEP 488: removal of .pyo files.
-- Issue #22384: An exception in Tkinter callback no longer crashes the program
- when it is run with pythonw.exe.
+- 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 #22168: Prevent turtle AttributeError with non-default Canvas on OS X.
+- 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 #21147: sqlite3 now raises an exception if the request contains a null
- character instead of truncate it. Based on patch by Victor Stinner.
+- Issue #22977: Fixed formatting Windows error messages on Wine.
+ Patch by Martin Panter.
-- Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with
- empty string or tuple argument.
+- Issue #23466: %c, %o, %x, and %X in bytes formatting now raise TypeError on
+ non-integer input.
-- Issue #21951: Tkinter now most likely raises MemoryError instead of crash
- if the memory allocation fails.
+- Issue #24044: Fix possible null pointer dereference in list.sort in out of
+ memory conditions.
-- Issue #22338: Fix a crash in the json module on memory allocation failure.
+- Issue #21354: PyCFunction_New function is exposed by python DLL again.
-- Issue #22226: First letter no longer is stripped from the "status" key in
- the result of Treeview.heading().
+Library
+-------
-- Issue #19524: Fixed resource leak in the HTTP connection when an invalid
- response is received. Patch by Martin Panter.
+- Issue #23840: tokenize.open() now closes the temporary binary file on error
+ to fix a resource warning.
-- 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 #16914: new debuglevel 2 in smtplib adds timestamps to debug output.
-- 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 #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 #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 #23703: Fix a regression in urljoin() introduced in 901e4e52b20a.
+ Patch by Demian Brecht.
- - Issue #4254: Adds _curses.update_lines_cols() Patch by Arnon Yaari
-- Issue #18132: Turtledemo buttons no longer disappear when the window is
- shrunk. Original patches by Jan Kanis and Lita Cho.
++- Issue #4254: Adds _curses.update_lines_cols(). Patch by Arnon Yaari
-- 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 #19933: Provide default argument for ndigits in round. Patch by
+ Vajrasky Kok.
-- 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 #23193: Add a numeric_owner parameter to
+ tarfile.TarFile.extract and tarfile.TarFile.extractall. Patch by
+ Michael Vogt and Eric Smith.
-- Issue #22182: Use e.args to unpack exceptions correctly in
- distutils.file_util.move_file. Patch by Claudiu Popa.
+- Issue #23342: Add a subprocess.run() function than returns a CalledProcess
+ instance for a more consistent API than the existing call* functions.
-- The webbrowser module now uses subprocess's start_new_session=True rather
- than a potentially risky preexec_fn=os.setsid call.
+- 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 #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode.
+- Issue #24521: Fix possible integer overflows in the pickle module.
-- Issue #22191: Fix warnings.__all__.
+- Issue #22931: Allow '[' and ']' in cookie values.
-- Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows.
+- The keywords attribute of functools.partial is now always a dictionary.
-- Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter.
+- Issue #23811: Add missing newline to the PyCompileError error message.
+ Patch by Alex Shkop.
-- Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names.
+- 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 #8797: Raise HTTPError on failed Basic Authentication immediately.
- Initial patch by Sam Bull.
+- Issue #22982: Improve BOM handling when seeking to multiple positions of
+ a writable text file.
-- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems()
- in the mailbox module.
+- Issue #23464: Removed deprecated asyncio JoinableQueue.
-- Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when
- parsing long line. Original patch by Raymond Hettinger.
+- 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 #22184: The functools LRU Cache decorator factory now gives an earlier
- and clearer error message when the user forgets the required parameters.
+- Issue #21859: Added Python implementation of io.FileIO.
-- Issue #17923: glob() patterns ending with a slash no longer match non-dirs on
- AIX. Based on patch by Delhallt.
+- 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 #21121: Don't force 3rd party C extensions to be built with
- -Werror=declaration-after-statement.
+- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not
+ available. Patch by Davin Potts.
-- 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 #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 #21580: Now Tkinter correctly handles bytes arguments passed to Tk.
- In particular this allows to initialize images from binary data.
+- Issue #23411: Added DefragResult, ParseResult, SplitResult, DefragResultBytes,
+ ParseResultBytes, and SplitResultBytes to urllib.parse.__all__.
+ Patch by Martin Panter.
-- Issue #17172: Make turtledemo start as active on OS X even when run with
- subprocess. Patch by Lita Cho.
+- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if
+ the FTP connection failed to fix a ResourceWarning.
-- Issue #21704: Fix build error for _multiprocessing when semaphores
- are not available. Patch by Arfrever Frehtes Taifersar Arahesis.
+- 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.
-- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError
- on closed socket. repr(socket.socket) already works fine.
+- 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 #16133: The asynchat.async_chat.handle_read() method now ignores
- BlockingIOError exceptions.
+- 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 #22044: Fixed premature DECREF in call_tzinfo_method.
- Patch by Tom Flanagan.
+- Issue #10590: xml.sax.parseString() now supports string argument.
-- 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 #23338: Fixed formatting ctypes error messages on Cygwin.
+ Patch by Makoto Kato.
-- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is
- specified.
+- Issue #15582: inspect.getdoc() now follows inheritance chains.
-- Issue #21044: tarfile.open() now handles fileobj with an integer 'name'
- attribute. Based on patch by Antoine Pietri.
+- Issue #2175: SAX parsers now support a character stream of InputSource object.
-- Issue #21867: Prevent turtle crash due to invalid undo buffer size.
+- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and
+ arbitrary precision integers added in Tcl 8.5.
-- Issue #19076: Don't pass the redundant 'file' argument to self.error().
+- 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 #21942: Fixed source file viewing in pydoc's server mode on Windows.
+- 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 #11259: asynchat.async_chat().set_terminator() now raises a ValueError
- if the number of received bytes is negative.
+- Issue #21526: Tkinter now supports new boolean type in Tcl 8.5.
-- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't
- get a bytes string
+- Issue #23836: Fix the faulthandler module to handle reentrant calls to
+ its signal handlers.
-- Issue #21707: Add missing kwonlyargcount argument to
- ModuleFinder.replace_paths_in_code().
+- Issue #23838: linecache now clears the cache and returns an empty result on
+ MemoryError.
-- Issue #20639: calling Path.with_suffix('') allows removing the suffix
- again. Patch by July Tikhonov.
+- Issue #10395: Added os.path.commonpath(). Implemented in posixpath and ntpath.
+ Based on patch by Rafik Draoui.
-- Issue #21714: Disallow the construction of invalid paths using
- Path.with_name(). Original patch by Antony Lee.
+- Issue #23611: Serializing more "lookupable" objects (such as unbound methods
+ or nested classes) now are supported with pickle protocols < 4.
-- Issue #21897: Fix a crash with the f_locals attribute with closure
- variables when frame.clear() has been called.
+- Issue #13583: sqlite3.Row now supports slice indexing.
-- 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 #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 #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 #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 #21781: ssl.RAND_add() now supports strings longer than 2 GB.
+- 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 #11453: asyncore: emit a ResourceWarning when an unclosed file_wrapper
- object is destroyed. The destructor now closes the file if needed. The
- close() method can now be called twice: the second call does nothing.
+- Issue #23704: collections.deque() objects now support __add__, __mul__, and
+ __imul__().
-- Issue #21858: Better handling of Python exceptions in the sqlite3 module.
+- Issue #23171: csv.Writer.writerow() now supports arbitrary iterables.
-- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is
- discarded after parsing, so the input file isn't unexpectedly closed.
+- Issue #23745: The new email header parser now handles duplicate MIME
+ parameter names without error, similar to how get_param behaves.
-- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure
- files closing. Patch by Claudiu Popa.
+- Issue #22117: Fix os.utime(), it now rounds the timestamp towards minus
+ infinity (-inf) instead of rounding towards zero.
-- Issue #21491: socketserver: Fix a race condition in child processes reaping.
+- Issue #23310: Fix MagicMock's initializer to work with __methods__, just
+ like configure_mock(). Patch by Kasia Jachim.
-- Issue #21832: Require named tuple inputs to be exact strings.
+Build
+-----
-- 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 #23817: FreeBSD now uses "1.0" the the SOVERSION as other operating
+ systems, instead of just "1".
-- Issue #21812: turtle.shapetransform did not tranform the turtle on the
- first call. (Issue identified and fixed by Lita Cho.)
+- Issue #23501: Argument Clinic now generates code into separate files by default.
-- 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.
+Tests
+-----
-- Issue #21722: The distutils "upload" command now exits with a non-zero
- return code when uploading fails. Patch by Martin Dengler.
+- Issue #23799: Added test.support.start_threads() for running and
+ cleaning up multiple threads.
-- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the
- maximum size. Patch written by Vajrasky Kok.
+- Issue #22390: test.regrtest now emits a warning if temporary files or
+ directories are left after running a test.
-- 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.
+Tools/Demos
+-----------
-- 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 #18128: pygettext now uses standard +NNNN format in the
+ POT-Creation-Date header.
-- Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths
- before checking for a CGI script at that path.
+- 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 #21310: Fixed possible resource leak in failed open().
+- Issue #23944: Argument Clinic now wraps long impl prototypes at column 78.
-- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods.
+- Issue #20586: Argument Clinic now ensures that functions without docstrings
+ have signatures.
-- Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a
- valid file.
+- Issue #23492: Argument Clinic now generates argument parsing code with
+ PyArg_Parse instead of PyArg_ParseTuple if possible.
-- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods
- that use 'self' in the example code is generated correctly.
+- 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 #21463: In urllib.request, fix pruning of the FTP cache.
+C API
+-----
-- 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 #23998: PyImport_ReInitLock() now checks for lock allocation error
-- Issue #21552: Fixed possible integer overflow of too long string lengths in
- the tkinter module on 64-bit platforms.
-- 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.
+What's New in Python 3.5.0 alpha 3?
+===================================
-- Issue #21402: tkinter.ttk now works when default root window is not set.
+Release date: 2015-03-28
-- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particular
- it supports reverse() and negative indices. Original patch by Claudiu Popa.
+Core and Builtins
+-----------------
-- 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 #23573: Increased performance of string search operations (str.find,
+ str.index, str.count, the in operator, str.split, str.partition) with
+ arguments of different kinds (UCS1, UCS2, UCS4).
-- Issue #14710: pkgutil.get_loader() no longer raises an exception when None is
- found in sys.modules.
+- Issue #23753: Python doesn't support anymore platforms without stat() or
+ fstat(), these functions are always required.
-- Issue #14710: pkgutil.find_loader() no longer raises an exception when a
- module doesn't exist.
+- Issue #23681: The -b option now affects comparisons of bytes with int.
-- Issue #21481: Argparse equality and inequality tests now return
- NotImplemented when comparing to an unknown type.
+- Issue #23632: Memoryviews now allow tuple indexing (including for
+ multi-dimensional memoryviews).
-- Issue #8743: Fix interoperability between set objects and the
- collections.Set() abstract base class.
+- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet.
-- Issue #13355: random.triangular() no longer fails with a ZeroDivisionError
- when low equals high.
+- Issue #23629: Fix the default __sizeof__ implementation for variable-sized
+ objects.
-- Issue #21538: The plistlib module now supports loading of binary plist files
- when reference or offset size is not a power of two.
+Library
+-------
-- Issue #21801: Validate that __signature__ is None or an instance of Signature.
+- Issue #14260: The groupindex attribute of regular expression pattern object
+ now is non-modifiable mapping.
-- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler
- due to possible uninitialized _config_vars.
+- 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 #21323: Fix http.server to again handle scripts in CGI subdirectories,
- broken by the fix for security issue #19435. Patch by Zach Byrne.
+- Issue #23775: pprint() of OrderedDict now outputs the same representation
+ as repr().
-Extension Modules
------------------
+- Issue #23765: Removed IsBadStringPtr calls in ctypes
-- 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 #22364: Improved some re error messages using regex for hints.
-Build
------
+- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes.
-- Issue #15661: python.org OS X installers are now distributed as signed
- installer packages compatible with the Gatekeeper security feature.
+- Issue #21717: The zipfile.ZipFile.open function now supports 'x' (exclusive
+ creation) mode.
-- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and
- above. Patch by Zachary Turner.
+- Issue #21802: The reader in BufferedRWPair now is closed even when closing
+ writer failed in BufferedRWPair.close().
-- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/
- now display special message when and only when there are failures.
+- 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 #17095: Fix Modules/Setup *shared* support.
+- 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 #21811: Anticipated fixes to support OS X versions > 10.9.
+- Issue #23502: The pprint module now supports mapping proxies.
-- Issue #21166: Prevent possible segfaults and other random failures of
- python --generate-posix-vars in pybuilddir.txt build target.
+- Issue #17530: pprint now wraps long bytes objects and bytearrays.
-IDLE
-----
+- Issue #22687: Fixed some corner cases in breaking words in tetxtwrap.
+ Got rid of quadratic complexity in breaking long words.
-- Issue #17390: Adjust Editor window title; remove 'Python',
- move version to end.
+- 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 #14105: Idle debugger breakpoints no longer disappear
- when inseting or deleting lines.
+- 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).
-- 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 #23657: Avoid explicit checks for str in zipapp, adding support
+ for pathlib.Path objects as arguments.
-- Issue #21765: Add support for non-ascii identifiers to HyperParser.
+- 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 #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav
- Heblikar.
+- Issue #23252: Added support for writing ZIP files to unseekable streams.
-- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster.
+- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes.
-- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar.
+- 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 #21686: add unittest for HyperParser. Original patch by Saimadhav
- Heblikar.
+- 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 #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 #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 #21695: Closing a Find-in-files output window while the search is
- still in progress no longer closes Idle.
+- 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 #18910: Add unittest for textView. Patch by Phil Webster.
+- 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 #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar.
-
-- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster.
-
-Tests
------
+- 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 #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 #23136: _strptime now uniformly handles all days in week 0, including
+ Dec 30 of previous year. Based on patch by Jim Carroll.
-- Issue #22236: Tkinter tests now don't reuse default root window. New root
- window is created for every test class.
+- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to
+ NamedTemporaryFile instance. Patch by Bohuslav Kabrda.
-- Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier
- de Gaye.
+- Issue #22903: The fake test case created by unittest.loader when it fails
+ importing a test module is now picklable.
-- Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it
- now uses unittest test discovery to find its tests.
+- 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 #22104: regrtest.py no longer holds a reference to the suite of tests
- loaded from test modules that don't define test_main().
+- Issue #18983: Allow selection of output units in timeit.
+ Patch by Julian Gindi.
-- 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 #23631: Fix traceback.format_list when a traceback has been mutated.
-- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks
- to William Orr.
+- Issue #23568: Add rdivmod support to MagicMock() objects.
+ Patch by Håkan Lövdahl.
-- Issue #21918: Converted test_tools from a module to a package containing
- separate test files for each tested script.
+- Issue #2052: Add charset parameter to HtmlDiff.make_file().
-- 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 #23668: Support os.truncate and os.ftruncate on Windows.
-- Issue #19493: Refactored the ctypes test package to skip tests explicitly
- rather than silently.
+- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar.
+ Patch by Demian Brecht.
-- Issue #18492: All resources are now allowed when tests are not run by
- regrtest.py.
+- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now
+ handle exceptions raised by an iterator. Patch by Alon Diamant and Davin
+ Potts.
-- 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 #23581: Add matmul support to MagicMock. Patch by Håkan Lövdahl.
-- Issue #21605: Added tests for Tkinter images.
+- Issue #23566: enable(), register(), dump_traceback() and
+ dump_traceback_later() functions of faulthandler now accept file
+ descriptors. Patch by Wei Wu.
-- Issue #21493: Added test for ntpath.expanduser(). Original patch by
- Claudiu Popa.
+- Issue #22928: Disabled HTTP header injections in http.client.
+ Original patch by Demian Brecht.
-- Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok.
+- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with
+ imp.reload(). Patch by Thomas Kluyver.
-- Issue #21522: Added Tkinter tests for Listbox.itemconfigure(),
- PanedWindow.paneconfigure(), and Menu.entryconfigure().
+- 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.
-Documentation
--------------
+Build
+-----
-- 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 #23585: make patchcheck will ensure the interpreter is built.
-Windows
--------
+Tests
+-----
-- Issue #21671, #22160, CVE-2014-0224: The bundled version of OpenSSL has been
- updated to 1.0.1i.
+- Issue #23583: Added tests for standard IO streams in IDLE.
-- Issue #10747: Use versioned labels in the Windows start menu.
- Patch by Olive Kilburn.
+- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout.
Tools/Demos
-----------
Core and Builtins
-----------------
-- Issue #1683368: object.__new__ and object.__init__ raise a TypeError if they
- are passed arguments and their complementary method is not overridden.
-
-- Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as
- the module name that was not interned.
-
-- Issue #14331: Use significantly less stack space when importing modules by
- allocating path buffers on the heap instead of the stack.
-
-- Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not
- passed strings.
-
-- Issue #1469629: Allow cycles through an object's __dict__ slot to be
- collected. (For example if ``x.__dict__ is x``).
-
-- Issue #14205: dict lookup raises a RuntimeError if the dict is modified
- during a lookup.
-
-- Issue #14220: When a generator is delegating to another iterator with the
- yield from syntax, it needs to have its ``gi_running`` flag set to True.
-
-- Issue #14435: Remove dedicated block allocator from floatobject.c and rely
- on the PyObject_Malloc() api like all other objects.
-
-- Issue #14471: Fix a possible buffer overrun in the winreg module.
-
-- Issue #14288: Allow the serialization of builtin iterators
-
-Library
--------
-
-- Issue #14300: Under Windows, sockets created using socket.dup() now allow
- overlapped I/O. Patch by sbt.
-
-- Issue #13872: socket.detach() now marks the socket closed (as mirrored
- in the socket repr()). Patch by Matt Joiner.
-
-- Issue #14406: Fix a race condition when using ``concurrent.futures.wait(
- return_when=ALL_COMPLETED)``. Patch by Matt Joiner.
-
-- Issue #5136: deprecate old, unused functions from tkinter.
-
-- Issue #14416: syslog now defines the LOG_ODELAY and LOG_AUTHPRIV constants
- if they are defined in <syslog.h>.
-
-- Issue #14295: Add unittest.mock
-
-- Issue #7652: Add --with-system-libmpdec option to configure for linking
- the _decimal module against an installed libmpdec.
-
-- Issue #14380: MIMEText now defaults to utf-8 when passed non-ASCII unicode
- with no charset specified.
+- Issue #18942: sys._debugmallocstats() output was damaged on Windows.
-- Issue #10340: asyncore - properly handle EINVAL in dispatcher constructor on
- OSX; avoid to call handle_connect in case of a disconnected socket which
- was not meant to connect.
+- Issue #18571: Implementation of the PEP 446: file descriptors and file
+ handles are now created non-inheritable; add functions
+ os.get/set_inheritable(), os.get/set_handle_inheritable() and
+ socket.socket.get/set_inheritable().
-- Issue #14204: The ssl module now has support for the Next Protocol
- Negotiation extension, if available in the underlying OpenSSL library.
- Patch by Colin Marc.
+- Issue #11619: The parser and the import machinery do not encode Unicode
+ filenames anymore on Windows.
-- Issue #3035: Unused functions from tkinter are marked as pending deprecated.
+- Issue #18808: Non-daemon threads are now automatically joined when
+ a sub-interpreter is shutdown (it would previously dump a fatal error).
-- Issue #12757: Fix the skipping of doctests when python is run with -OO so
- that it works in unittest's verbose mode as well as non-verbose mode.
+- Remove support for compiling on systems without getcwd().
-- Issue #7652: Integrate the decimal floating point libmpdec library to speed
- up the decimal module. Performance gains of the new C implementation are
- between 10x and 100x, depending on the application.
+- Issue #18774: Remove last bits of GNU PTH thread code and thread_pth.h.
-- Issue #14269: SMTPD now conforms to the RFC and requires a HELO command
- before MAIL, RCPT, or DATA.
+- Issue #18771: Add optimization to set object lookups to reduce the cost
+ of hash collisions. The core idea is to inspect a second key/hash pair
+ for each cache line retrieved.
-- Issue #13694: asynchronous connect in asyncore.dispatcher does not set addr
- attribute.
+- Issue #16105: When a signal handler fails to write to the file descriptor
+ registered with ``signal.set_wakeup_fd()``, report an exception instead
+ of ignoring the error.
-- Issue #14344: fixed the repr of email.policy objects.
+- Issue #18722: Remove uses of the "register" keyword in C code.
-- Issue #11686: Added missing entries to email package __all__ lists
- (mostly the new Bytes classes).
+- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions.
-- Issue #14335: multiprocessing's custom Pickler subclass now inherits from
- the C-accelerated implementation. Patch by sbt.
+- Issue #16499: Add command line option for isolated mode.
-- Issue #10484: Fix the CGIHTTPServer's PATH_INFO handling problem.
+- Issue #15301: Parsing fd, uid, and gid parameters for builtins
+ in Modules/posixmodule.c is now far more robust.
-- Issue #11199: Fix the with urllib which hangs on particular ftp urls.
+- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc()
+ fail.
-- Improve the memory utilization and speed of functools.lru_cache.
+- Issue #17934: Add a clear() method to frame objects, to help clean up
+ expensive details (local variables) and break reference cycles.
-- Issue #14222: Use the new time.steady() function instead of time.time() for
- timeout in queue and threading modules to not be affected of system time
- update.
+- Issue #18780: %-formatting codes %d, %i, and %u now treat int-subclasses
+ as int (displays value of int-subclass instead of str(int-subclass) ).
-- Issue #13248: Remove lib2to3.pytree.Base.get_prefix/set_prefix.
+Library
+-------
-- Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash
- table internal to the pyexpat module's copy of the expat library to avoid a
- denial of service due to hash collisions. Patch by David Malcolm with some
- modifications by the expat project.
+- Issue #18808: Thread.join() now waits for the underlying thread state to
+ be destroyed before returning. This prevents unpredictable aborts in
+ Py_EndInterpreter() when some non-daemon threads are still running.
-- Issue #12818: format address no longer needlessly \ escapes ()s in names when
- the name ends up being quoted.
+- Issue #18458: Prevent crashes with newer versions of libedit. Its readline
+ emulation has changed from 0-based indexing to 1-based like gnu readline.
-- Issue #14062: BytesGenerator now correctly folds Header objects,
- including using linesep when folding.
+- Issue #18852: Handle case of ``readline.__doc__`` being ``None`` in the new
+ readline activation code in ``site.py``.
-- Issue #13839: When invoked on the command-line, the pstats module now
- accepts several filenames of profile stat files and merges them all.
- Patch by Matt Joiner.
+- Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in
+ the _sre module.
-- Issue #14291: Email now defaults to utf-8 for non-ASCII unicode headers
- instead of raising an error. This fixes a regression relative to 2.7.
+- Issue #18830: inspect.getclasstree() no longer produces duplicate entries even
+ when input list contains duplicates.
-- Issue #989712: Support using Tk without a mainloop.
+- Issue #18878: sunau.open now supports the context management protocol. Based on
+ patches by Claudiu Popa and R. David Murray.
-- Issue #3835: Refuse to use unthreaded Tcl in threaded Python.
+- Issue #18909: Fix _tkinter.tkapp.interpaddr() on Windows 64-bit, don't cast
+ 64-bit pointer to long (32 bits).
-- Issue #2843: Add new Tk API to Tkinter.
+- Issue #18876: The FileIO.mode attribute now better reflects the actual mode
+ under which the file was opened. Patch by Erik Bray.
-- Issue #14184: Increase the default stack size for secondary threads on
- Mac OS X to avoid interpreter crashes when using threads on 10.7.
+- Issue #16853: Add new selectors module.
-- Issue #14180: datetime.date.fromtimestamp(),
- datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp()
- now raise an OSError instead of ValueError if localtime() or gmtime() failed.
+- Issue #18882: Add threading.main_thread() function.
-- Issue #14180: time.ctime(), gmtime(), time.localtime(),
- datetime.date.fromtimestamp(), datetime.datetime.fromtimestamp() and
- datetime.datetime.utcfromtimestamp() now raises an OverflowError, instead of
- a ValueError, if the timestamp does not fit in time_t.
+- Issue #18901: The sunau getparams method now returns a namedtuple rather than
+ a plain tuple. Patch by Claudiu Popa.
-- Issue #14180: datetime.datetime.fromtimestamp() and
- datetime.datetime.utcfromtimestamp() now round microseconds towards zero
- instead of rounding to nearest with ties going away from zero.
+- Issue #17487: The result of the wave getparams method now is pickleable again.
+ Patch by Claudiu Popa.
-- Issue #10543: Fix unittest test discovery with Jython bytecode files.
+- Issue #18756: os.urandom() now uses a lazily-opened persistent file
+ descriptor, so as to avoid using many file descriptors when run in
+ parallel from multiple threads.
-- Issue #1178863: Separate initialisation from setting when initializing
- Tkinter.Variables; harmonize exceptions to ValueError; only delete variables
- that have not been deleted; assert that variable names are strings.
+- Issue #18418: After fork(), reinit all threads states, not only active ones.
+ Patch by A. Jesse Jiryu Davis.
-- Issue #14104: Implement time.monotonic() on Mac OS X, patch written by
- Nicholas Riley.
+- Issue #17974: Switch unittest from using getopt to using argparse.
-- Issue #13394: the aifc module now uses warnings.warn() to signal warnings.
+- Issue #11798: TestSuite now drops references to own tests after execution.
-- Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under
- Windows when the child process has already exited.
+- Issue #16611: http.cookie now correctly parses the 'secure' and 'httponly'
+ cookie flags.
-- Issue #14223: curses.addch() is no more limited to the range 0-255 when the
- Python curses is not linked to libncursesw. It was a regression introduced
- in Python 3.3a1.
+- Issue #11973: Fix a problem in kevent. The flags and fflags fields are now
+ properly handled as unsigned.
-- Issue #14168: Check for presence of Element._attrs in minidom before
- accessing it.
+- Issue #18807: ``pyvenv`` now takes a --copies argument allowing copies
+ instead of symlinks even where symlinks are available and the default.
-- Issue #12328: Fix multiprocessing's use of overlapped I/O on Windows.
- Also, add a multiprocessing.connection.wait(rlist, timeout=None) function
- for polling multiple objects at once. Patch by sbt.
+- Issue #18538: ``python -m dis`` now uses argparse for argument processing.
+ Patch by Michele Orrù.
-- Issue #14007: Accept incomplete TreeBuilder objects (missing start, end,
- data or close method) for the Python implementation as well.
- Drop the no-op TreeBuilder().xml() method from the C implementation.
+- Issue #18394: Close cgi.FieldStorage's optional file.
-- Issue #14210: pdb now has tab-completion not only for command names, but
- also for their arguments, wherever possible.
+- Issue #17702: On error, os.environb now suppresses the exception context
+ when raising a new KeyError with the original key.
-- Issue #14310: Sockets can now be with other processes on Windows using
- the api socket.socket.share() and socket.fromshare().
+- Issue #16809: Fixed some tkinter incompabilities with Tcl/Tk 8.6.
-- Issue #10576: The gc module now has a 'callbacks' member that will get
- called when garbage collection takes place.
+- Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj
+ argument.
-Build
------
+- Issue #18324: set_payload now correctly handles binary input. This also
+ supersedes the previous fixes for #14360, #1717, and #16564.
-- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.
+- Issue #18794: Add a fileno() method and a closed attribute to select.devpoll
+ objects.
-- Issue #14387: Do not include accu.h from Python.h.
+- Issue #17119: Fixed integer overflows when processing large strings and tuples
+ in the tkinter module.
-- Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined.
- Based on patch from Hervé Coatanhay.
+- Issue #18747: Re-seed OpenSSL's pseudo-random number generator after fork.
+ A pthread_atfork() parent handler is used to seed the PRNG with pid, time
+ and some stack data.
-- Issue #14321: Do not run pgen during the build if files are up to date.
+- Issue #8865: Concurrent invocation of select.poll.poll() now raises a
+ RuntimeError exception. Patch by Christian Schubert.
-Documentation
--------------
+- Issue #18777: The ssl module now uses the new CRYPTO_THREADID API of
+ OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function.
-- Issue #14034: added the argparse tutorial.
+- Issue #18768: Correct doc string of RAND_edg(). Patch by Vajrasky Kok.
-- Issue #14324: Fix configure tests for cross builds.
+- Issue #18178: Fix ctypes on BSD. dlmalloc.c was compiled twice which broke
+ malloc weak symbols.
-- Issue #14327: Call AC_CANONICAL_HOST in configure.ac and check in
- config.{guess,sub}. Don't use uname calls for cross builds.
+- Issue #18709: Fix CVE-2013-4238. The SSL module now handles NULL bytes
+ inside subjectAltName correctly. Formerly the module has used OpenSSL's
+ GENERAL_NAME_print() function to get the string represention of ASN.1
+ strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and
+ ``uniformResourceIdentifier`` (URI).
-Extension Modules
------------------
+- Issue #18701: Remove support of old CPython versions (<3.0) from C code.
-- Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and
- ctypes.c_float that caused an incorrect exception to be returned in the
- case of overflow has been fixed.
+- Issue #18756: Improve error reporting in os.urandom() when the failure
+ is due to something else than /dev/urandom not existing (for example,
+ exhausting the file descriptor limit).
-- Issue #14212: The re module didn't retain a reference to buffers it was
- scanning, resulting in segfaults.
+- Issue #18673: Add O_TMPFILE to os module. O_TMPFILE requires Linux kernel
+ 3.11 or newer. It's only defined on system with 3.11 uapi headers, too.
-- Issue #14259: The finditer() method of re objects did not take any
- keyword arguments, contrary to the documentation.
+- Issue #18532: Change the builtin hash algorithms' names to lower case names
+ as promised by hashlib's documentation.
-- Issue #10142: Support for SEEK_HOLE/SEEK_DATA (for example, under ZFS).
+- Issue #8713: add new spwan and forkserver start methods, and new functions
+ get_all_start_methods, get_start_method, and set_start_method, to
+ multiprocessing.
-Tests
------
+- Issue #18405: Improve the entropy of crypt.mksalt().
-- Issue #14442: Add missing errno import in test_smtplib.
+- Issue #12015: The tempfile module now uses a suffix of 8 random characters
+ instead of 6, to reduce the risk of filename collision. The entropy was
+ reduced when uppercase letters were removed from the charset used to generate
+ random characters.
-- Issue #8315: (partial fix) python -m unittest test.test_email now works.
+- Issue #18585: Add :func:`textwrap.shorten` to collapse and truncate a
+ piece of text to a given length.
+- Issue #18598: Tweak exception message for importlib.import_module() to
+ include the module name when a key argument is missing.
-What's New in Python 3.3.0 Alpha 1?
-===================================
+- Issue #19151: Fix docstring and use of _get_supported_file_loaders() to
+ reflect 2-tuples.
-*Release date: 05-Mar-2012*
+- Issue #19152: Add ExtensionFileLoader.get_filename().
-Core and Builtins
------------------
+- Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get
+ docstrings and ValueError messages. Patch by Zhongyue Luo
-- Issue #14172: Fix reference leak when marshalling a buffer-like object
- (other than a bytes object).
+- Fix refcounting issue with extension types in tkinter.
-- Issue #13521: dict.setdefault() now does only one lookup for the given key,
- making it "atomic" for many purposes. Patch by Filip Gruszczyński.
+- Issue #8112: xlmrpc.server's DocXMLRPCServer server no longer raises an error
+ if methods have annotations; it now correctly displays the annotations.
-- PEP 409, Issue #6210: "raise X from None" is now supported as a means of
- suppressing the display of the chained exception context. The chained
- context still remains available as the __context__ attribute.
+- Issue #18600: Added policy argument to email.message.Message.as_string,
+ and as_bytes and __bytes__ methods to Message.
-- Issue #10181: New memoryview implementation fixes multiple ownership
- and lifetime issues of dynamically allocated Py_buffer members (#9990)
- as well as crashes (#8305, #7433). Many new features have been added
- (See whatsnew/3.3), and the documentation has been updated extensively.
- The ndarray test object from _testbuffer.c implements all aspects of
- PEP-3118, so further development towards the complete implementation
- of the PEP can proceed in a test-driven manner.
+- Issue #18671: Output more information when logging exceptions occur.
- Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review
- and many ideas.
+- Issue #18621: Prevent the site module's patched builtins from keeping
+ too many references alive for too long.
-- Issue #12834: Fix incorrect results of memoryview.tobytes() for
- non-contiguous arrays.
+- Issue #4885: Add weakref support to mmap objects. Patch by Valerie Lambert.
-- Issue #5231: Introduce memoryview.cast() method that allows changing
- format and shape without making a copy of the underlying memory.
+- Issue #8860: Fixed rounding in timedelta constructor.
-- Issue #14084: Fix a file descriptor leak when importing a module with a
- bad encoding.
+- Issue #18849: Fixed a Windows-specific tempfile bug where collision with an
+ existing directory caused mkstemp and related APIs to fail instead of
+ retrying. Report and fix by Vlad Shcherbina.
-- Upgrade Unicode data to Unicode 6.1.
+- Issue #18920: argparse's default destination for the version action (-v,
+ --version) has also been changed to stdout, to match the Python executable.
-- Issue #14040: Remove rarely used file name suffixes for C extensions
- (under POSIX mainly).
+Tests
+-----
-- Issue #14051: Allow arbitrary attributes to be set of classmethod and
- staticmethod.
+- Issue #18623: Factor out the _SuppressCoreFiles context manager into
+ test.support. Patch by Valerie Lambert.
-- Issue #13703: oCERT-2011-003: Randomize hashes of str and bytes to protect
- against denial of service attacks due to hash collisions within the dict and
- set types. Patch by David Malcolm, based on work by Victor Stinner.
+- Issue #12037: Fix test_email for desktop Windows.
-- Issue #13020: Fix a reference leak when allocating a structsequence object
- fails. Patch by Suman Saha.
+- Issue #15507: test_subprocess's test_send_signal could fail if the test
+ runner were run in an environment where the process inherited an ignore
+ setting for SIGINT. Restore the SIGINT handler to the desired
+ KeyboardInterrupt raising one during that test.
-- Issue #13908: Ready types returned from PyType_FromSpec.
+- Issue #16799: Switched from getopt to argparse style in regrtest's argument
+ parsing. Added more tests for regrtest's argument parsing.
-- Issue #11235: Fix OverflowError when trying to import a source file whose
- modification time doesn't fit in a 32-bit timestamp.
+- Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as
+ possible, since "localhost" goes through a DNS lookup under recent Windows
+ versions.
-- Issue #12705: A SyntaxError exception is now raised when attempting to
- compile multiple statements as a single interactive statement.
+IDLE
+----
-- Fix the builtin module initialization code to store the init function for
- future reinitialization.
+- Issue #18489: Add tests for SearchEngine. Original patch by Phil Webster.
-- Issue #8052: The posix subprocess module would take a long time closing
- all possible file descriptors in the child process rather than just open
- file descriptors. It now closes only the open fds if possible for the
- default close_fds=True behavior.
+Documentation
+-------------
-- Issue #13629: Renumber the tokens in token.h so that they match the indexes
- into _PyParser_TokenNames.
+- Issue #18743: Fix references to non-existant "StringIO" module.
-- Issue #13752: Add a casefold() method to str.
+- Issue #18783: Removed existing mentions of Python long type in docstrings,
+ error messages and comments.
-- Issue #13761: Add a "flush" keyword argument to the print() function,
- used to ensure flushing the output stream.
+Build
+-----
-- Issue #13645: pyc files now contain the size of the corresponding source
- code, to avoid timestamp collisions (especially on filesystems with a low
- timestamp resolution) when checking for freshness of the bytecode.
+- Issue #1584: Provide configure options to override default search paths for
+ Tcl and Tk when building _tkinter.
-- PEP 380, Issue #11682: Add "yield from <x>" to support easy delegation to
- subgenerators (initial patch by Greg Ewing, integration into 3.3 by
- Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan)
+- Issue #15663: Tcl/Tk 8.5.14 is now included with the OS X 10.6+ 64-/32-bit
+ installer. It is no longer necessary to install a third-party version of
+ Tcl/Tk 8.5 to work around the problems in the Apple-supplied Tcl/Tk 8.5
+ shipped in OS X 10.6 and later releases.
-- Issue #13748: Raw bytes literals can now be written with the ``rb`` prefix
- as well as ``br``.
+Tools/Demos
+-----------
-- Issue #12736: Use full unicode case mappings for upper, lower, and title case.
+- Issue #18922: Now The Lib/smtpd.py and Tools/i18n/msgfmt.py scripts write
+ their version strings to stdout, and not to sderr.
-- Issue #12760: Add a create mode to open(). Patch by David Townshend.
-- Issue #13738: Simplify implementation of bytes.lower() and bytes.upper().
+What's New in Python 3.4.0 Alpha 1?
+===================================
-- Issue #13577: Built-in methods and functions now have a __qualname__.
- Patch by sbt.
+Release date: 2013-08-03
-- Issue #6695: Full garbage collection runs now clear the freelist of set
- objects. Initial patch by Matthias Troffaes.
+Core and Builtins
+-----------------
-- Fix OSError.__init__ and OSError.__new__ so that each of them can be
- overriden and take additional arguments (followup to issue #12555).
+- Issue #16741: Fix an error reporting in int().
-- Fix the fix for issue #12149: it was incorrect, although it had the side
- effect of appearing to resolve the issue. Thanks to Mark Shannon for
- noticing.
+- Issue #17899: Fix rare file descriptor leak in os.listdir().
-- Issue #13505: Pickle bytes objects in a way that is compatible with
- Python 2 when using protocols <= 2.
+- Issue #10241: Clear extension module dict copies at interpreter shutdown.
+ Patch by Neil Schemenauer, minimally modified.
-- Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER. (Fix
- given by Campbell Barton).
+- Issue #9035: ismount now recognises volumes mounted below a drive root
+ on Windows. Original patch by Atsuo Ishimoto.
-- Issue #13503: Use a more efficient reduction format for bytearrays with
- pickle protocol >= 3. The old reduction format is kept with older protocols
- in order to allow unpickling under Python 2. Patch by Irmen de Jong.
+- Issue #18214: Improve finalization of Python modules to avoid setting
+ their globals to None, in most cases.
-- Issue #7111: Python can now be run without a stdin, stdout or stderr
- stream. It was already the case with Python 2. However, the corresponding
- sys module entries are now set to None (instead of an unusable file object).
+- Issue #18112: PEP 442 implementation (safe object finalization).
-- Issue #11849: Ensure that free()d memory arenas are really released
- on POSIX systems supporting anonymous memory mappings. Patch by
- Charles-François Natali.
+- Issue #18552: Check return value of PyArena_AddPyObject() in
+ obj2ast_object().
-- PEP 3155 / issue #13448: Qualified name for classes and functions.
+- Issue #18560: Fix potential NULL pointer dereference in sum().
-- Issue #13436: Fix a bogus error message when an AST object was passed
- an invalid integer value.
+- Issue #18520: Add a new PyStructSequence_InitType2() function, same than
+ PyStructSequence_InitType() except that it has a return value (0 on success,
+ -1 on error).
-- Issue #13411: memoryview objects are now hashable when the underlying
- object is hashable.
+- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0],
+ prefix and exec_prefix if the operation system does not obey MAXPATHLEN.
-- Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER
- to allow compiling extension modules with -Wswitch-enum on gcc.
- Initial patch by Floris Bruynooghe.
+- Issue #18408: Fix many various bugs in code handling errors, especially
+ on memory allocation failure (MemoryError).
-- Issue #10227: Add an allocation cache for a single slice object. Patch by
- Stefan Behnel.
+- Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all().
-- Issue #13393: BufferedReader.read1() now asks the full requested size to
- the raw stream instead of limiting itself to the buffer size.
+- Issue #18342: Use the repr of a module name when an import fails when using
+ ``from ... import ...``.
-- Issue #13392: Writing a pyc file should now be atomic under Windows as well.
+- Issue #17872: Fix a segfault in marshal.load() when input stream returns
+ more bytes than requested.
-- Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder
- already accepts them).
+- Issue #18338: `python --version` now prints version string to stdout, and
+ not to stderr. Patch by Berker Peksag and Michael Dickens.
-- Issue #13389: Full garbage collection passes now clear the freelists for
- list and dict objects. They already cleared other freelists in the
- interpreter.
+- Issue #18426: Fix NULL pointer dereference in C extension import when
+ PyModule_GetDef() returns an error.
-- Issue #13327: Remove the need for an explicit None as the second argument
- to os.utime, os.lutimes, os.futimes, os.futimens, os.futimesat, in
- order to update to the current time. Also added keyword argument
- handling to os.utimensat in order to remove the need for explicit None.
+- Issue #17206: On Windows, increase the stack size from 2 MB to 4.2 MB to fix
+ a stack overflow in the marshal module (fix a crash in test_marshal).
+ Patch written by Jeremy Kloth.
-- Issue #13350: Simplify some C code by replacing most usages of
- PyUnicode_Format by PyUnicode_FromFormat.
+- Issue #3329: Implement the PEP 445: Add new APIs to customize Python memory
+ allocators.
-- Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode
- error handler in interactive mode (when calling into PyOS_Readline()).
+- Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the
+ tstate is first removed from TLS and then deallocated.
-- Issue #9896: Add start, stop, and step attributes to range objects.
+- Issue #13483: Use VirtualAlloc in obmalloc on Windows.
-- Issue #13343: Fix a SystemError when a lambda expression uses a global
- variable in the default value of a keyword-only argument: ``lambda *,
- arg=GLOBAL_NAME: None``
+- Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise
+ OverflowError when an argument of %c format is out of range.
-- Issue #12797: Added custom opener parameter to builtin open() and
- FileIO.open().
+- Issue #18111: The min() and max() functions now support a default argument
+ to be returned instead of raising a ValueError on an empty sequence.
+ (Contributed by Julian Berman.)
-- Issue #10519: Avoid unnecessary recursive function calls in
- setobject.c.
+- Issue #18137: Detect integer overflow on precision in float.__format__()
+ and complex.__format__().
-- Issue #10363: Deallocate global locks in Py_Finalize().
+- Issue #18183: Fix various unicode operations on strings with large unicode
+ codepoints.
-- Issue #13018: Fix reference leaks in error paths in dictobject.c.
- Patch by Suman Saha.
+- Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows().
-- Issue #13201: Define '==' and '!=' to compare range objects based on
- the sequence of values they define (instead of comparing based on
- object identity).
+- Issue #18038: SyntaxError raised during compilation sources with illegal
+ encoding now always contains an encoding name.
-- Issue #1294232: In a few cases involving metaclass inheritance, the
- interpreter would sometimes invoke the wrong metaclass when building a new
- class object. These cases now behave correctly. Patch by Daniel Urban.
+- Issue #17931: Resolve confusion on Windows between pids and process
+ handles.
-- Issue #12753: Add support for Unicode name aliases and named sequences.
- Both ``unicodedata.lookup()`` and '\N{...}' now resolve aliases,
- and ``unicodedata.lookup()`` resolves named sequences too.
+- Tweak the exception message when the magic number or size value in a bytecode
+ file is truncated.
-- Issue #12170: The count(), find(), rfind(), index() and rindex() methods
- of bytes and bytearray objects now accept an integer between 0 and 255
- as their first argument. Patch by Petri Lehtinen.
+- Issue #17932: Fix an integer overflow issue on Windows 64-bit in iterators:
+ change the C type of seqiterobject.it_index from long to Py_ssize_t.
-- Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler
- warnings. Patch by Josh Triplett and Petri Lehtinen.
+- Issue #18065: Don't set __path__ to the package name for frozen packages.
-- Issue #12281: Rewrite the MBCS codec to handle correctly replace and ignore
- error handlers on all Windows versions. The MBCS codec is now supporting all
- error handlers, instead of only replace to encode and ignore to decode.
+- Issue #18088: When reloading a module, unconditionally reset all relevant
+ attributes on the module (e.g. __name__, __loader__, __package__, __file__,
+ __cached__).
-- Issue #13188: When called without an explicit traceback argument,
- generator.throw() now gets the traceback from the passed exception's
- ``__traceback__`` attribute. Patch by Petri Lehtinen.
+- Issue #17937: Try harder to collect cyclic garbage at shutdown.
-- Issue #13146: Writing a pyc file is now atomic under POSIX.
+- Issue #12370: Prevent class bodies from interfering with the __class__
+ closure.
-- Issue #7833: Extension modules built using distutils on Windows will no
- longer include a "manifest" to prevent them failing at import time in some
- embedded situations.
+- Issue #17644: Fix a crash in str.format when curly braces are used in square
+ brackets.
-- PEP 3151 / issue #12555: reworking the OS and IO exception hierarchy.
+- Issue #17237: Fix crash in the ASCII decoder on m68k.
-- Add internal API for static strings (_Py_identifier et al.).
+- Issue #17927: Frame objects kept arguments alive if they had been
+ copied into a cell, even if the cell was cleared.
-- Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described
- as "The pipe is being closed") is now mapped to POSIX errno EPIPE
- (previously EINVAL).
+- Issue #1545463: At shutdown, defer finalization of codec modules so
+ that stderr remains usable.
-- Issue #12911: Fix memory consumption when calculating the repr() of huge
- tuples or lists.
+- Issue #7330: Implement width and precision (ex: "%5.3s") for the format
+ string of PyUnicode_FromFormat() function, original patch written by Ysj Ray.
-- PEP 393: flexible string representation. Thanks to Torsten Becker for the
- initial implementation, and Victor Stinner for various bug fixes.
+- Issue #1545463: Global variables caught in reference cycles are now
+ garbage-collected at shutdown.
-- Issue #14081: The 'sep' and 'maxsplit' parameter to str.split, bytes.split,
- and bytearray.split may now be passed as keyword arguments.
+- Issue #17094: Clear stale thread states after fork(). Note that this
+ is a potentially disruptive change since it may release some system
+ resources which would otherwise remain perpetually alive (e.g. database
+ connections kept in thread-local storage).
-- Issue #13012: The 'keepends' parameter to str.splitlines may now be passed
- as a keyword argument: "my_string.splitlines(keepends=True)". The same
- change also applies to bytes.splitlines and bytearray.splitlines.
+- Issue #17408: Avoid using an obsolete instance of the copyreg module when
+ the interpreter is shutdown and then started again.
-- Issue #7732: Don't open a directory as a file anymore while importing a
- module. Ignore the direcotry if its name matchs the module name (e.g.
- "__init__.py") and raise a ImportError instead.
+- Issue #5845: Enable tab-completion in the interactive interpreter by
+ default, thanks to a new sys.__interactivehook__.
-- Issue #13021: Missing decref on an error path. Thanks to Suman Saha for
- finding the bug and providing a patch.
+- Issue #17115,17116: Module initialization now includes setting __package__ and
+ __loader__ attributes to None.
-- Issue #12973: Fix overflow checks that relied on undefined behaviour in
- list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These bugs
- caused test failures with recent versions of Clang.
+- Issue #17853: Ensure locals of a class that shadow free variables always win
+ over the closures.
-- Issue #12904: os.utime, os.futimes, os.lutimes, and os.futimesat now write
- atime and mtime with nanosecond precision on modern POSIX platforms.
+- Issue #17863: In the interactive console, don't loop forever if the encoding
+ can't be fetched from stdin.
-- Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now
- mapped to POSIX errno ENOTDIR (previously EINVAL).
+- Issue #17867: Raise an ImportError if __import__ is not found in __builtins__.
-- Issue #9200: The str.is* methods now work with strings that contain non-BMP
- characters even in narrow Unicode builds.
+- Issue #18698: Ensure importlib.reload() returns the module out of sys.modules.
-- Issue #12791: Break reference cycles early when a generator exits with
- an exception.
+- Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3,
+ such as was shipped with Centos 5 and Mac OS X 10.4.
-- Issue #12773: Make __doc__ mutable on user-defined classes.
+- Issue #17413: sys.settrace callbacks were being passed a string instead of an
+ exception instance for the 'value' element of the arg tuple if the exception
+ originated from C code; now an exception instance is always provided.
-- Issue #12766: Raise a ValueError when creating a class with a class variable
- that conflicts with a name in __slots__.
+- Issue #17782: Fix undefined behaviour on platforms where
+ ``struct timespec``'s "tv_nsec" member is not a C long.
-- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase
- titlecased and cased non-letter characters.
+- Issue #17722: When looking up __round__, resolve descriptors.
-- Issue #12732: In narrow unicode builds, allow Unicode identifiers which fall
- outside the BMP.
+- Issue #16061: Speed up str.replace() for replacing 1-character strings.
-- Issue #12575: Validate user-generated AST before it is compiled.
+- Issue #17715: Fix segmentation fault from raising an exception in a __trunc__
+ method.
-- Make type(None), type(Ellipsis), and type(NotImplemented) callable. They
- return the respective singleton instances.
+- Issue #17643: Add __callback__ attribute to weakref.ref.
-- Forbid summing bytes with sum().
+- Issue #16447: Fixed potential segmentation fault when setting __name__ on a
+ class.
-- Verify the types of AST strings and identifiers provided by the user before
- compiling them.
+- Issue #17669: Fix crash involving finalization of generators using yield from.
-- Issue #12647: The None object now has a __bool__() method that returns False.
- Formerly, bool(None) returned False only because of special case logic
- in PyObject_IsTrue().
+- Issue #14439: Python now prints the traceback on runpy failure at startup.
-- Issue #12579: str.format_map() now raises a ValueError if used on a
- format string that contains positional fields. Initial patch by
- Julian Berman.
+- Issue #17469: Fix _Py_GetAllocatedBlocks() and sys.getallocatedblocks()
+ when running on valgrind.
-- Issue #10271: Allow warnings.showwarning() be any callable.
+- Issue #17619: Make input() check for Ctrl-C correctly on Windows.
-- Issue #11627: Fix segfault when __new__ on a exception returns a
- non-exception class.
+- Issue #17357: Add missing verbosity messages for -v/-vv that were lost during
+ the importlib transition.
-- Issue #12149: Update the method cache after a type's dictionary gets
- cleared by the garbage collector. This fixes a segfault when an instance
- and its type get caught in a reference cycle, and the instance's
- deallocator calls one of the methods on the type (e.g. when subclassing
- IOBase). Diagnosis and patch by Davide Rizzo.
+- Issue #17610: Don't rely on non-standard behavior of the C qsort() function.
-- Issue #9611, Issue #9015: FileIO.read() clamps the length to INT_MAX on Windows.
+- Issue #17323: The "[X refs, Y blocks]" printed by debug builds has been
+ disabled by default. It can be re-enabled with the `-X showrefcount` option.
-- Issue #9642: Uniformize the tests on the availability of the mbcs codec, add
- a new HAVE_MBCS define.
+- Issue #17328: Fix possible refleak in dict.setdefault.
-- Issue #9642: Fix filesystem encoding initialization: use the ANSI code page
- on Windows if the mbcs codec is not available, and fail with a fatal error if
- we cannot get the locale encoding (if nl_langinfo(CODESET) is not available)
- instead of using UTF-8.
+- Issue #17275: Corrected class name in init error messages of the C version of
+ BufferedWriter and BufferedRandom.
-- When a generator yields, do not retain the caller's exception state on the
- generator.
+- Issue #7963: Fixed misleading error message that issued when object is
+ called without arguments.
-- Issue #12475: Prevent generators from leaking their exception state into the
- caller's frame as they return for the last time.
+- Issue #8745: Small speed up zipimport on Windows. Patch by Catalin Iacob.
-- Issue #12291: You can now load multiple marshalled objects from a stream,
- with other data interleaved between marshalled objects.
+- Issue #5308: Raise ValueError when marshalling too large object (a sequence
+ with size >= 2**31), instead of producing illegal marshal data.
-- Issue #12356: When required positional or keyword-only arguments are not
- given, produce a informative error message which includes the name(s) of the
- missing arguments.
+- Issue #12983: Bytes literals with invalid ``\x`` escape now raise a SyntaxError
+ and a full traceback including line number.
-- Issue #12370: Fix super with no arguments when __class__ is overriden in the
- class body.
+- Issue #16967: In function definition, evaluate positional defaults before
+ keyword-only defaults.
-- Issue #12084: os.stat on Windows now works properly with relative symbolic
- links when called from any directory.
+- Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.)
+ in the interpreter.
-- Loosen type restrictions on the __dir__ method. __dir__ can now return any
- sequence, which will be converted to a list and sorted by dir().
+- Issue #17137: When an Unicode string is resized, the internal wide character
+ string (wstr) format is now cleared.
-- Issue #12265: Make error messages produced by passing an invalid set of
- arguments to a function more informative.
+- Issue #17043: The unicode-internal decoder no longer read past the end of
+ input buffer.
-- Issue #12225: Still allow Python to build if Python is not in its hg repo or
- mercurial is not installed.
+- Issue #17098: All modules now have __loader__ set even if they pre-exist the
+ bootstrapping of importlib.
-- Issue #1195: my_fgets() now always clears errors before calling fgets(). Fix
- the following case: sys.stdin.read() stopped with CTRL+d (end of file),
- raw_input() interrupted by CTRL+c.
+- Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder.
-- Issue #12216: Allow unexpected EOF errors to happen on any line of the file.
+- Issue #16772: The base argument to the int constructor no longer accepts
+ floats, or other non-integer objects with an __int__ method. Objects
+ with an __index__ method are now accepted.
-- Issue #12199: The TryExcept and TryFinally and AST nodes have been unified
- into a Try node.
+- Issue #10156: In the interpreter's initialization phase, unicode globals
+ are now initialized dynamically as needed.
-- Issue #9670: Increase the default stack size for secondary threads on
- Mac OS X and FreeBSD to reduce the chances of a crash instead of a
- "maximum recursion depth" RuntimeError exception.
- (patch by Ronald Oussoren)
+- Issue #16980: Fix processing of escaped non-ascii bytes in the
+ unicode-escape-decode decoder.
-- Issue #12106: The use of the multiple-with shorthand syntax is now reflected
- in the AST.
+- Issue #16975: Fix error handling bug in the escape-decode bytes decoder.
-- Issue #12190: Try to use the same filename object when compiling unmarshalling
- a code objects in the same file.
+- Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping"
+ in any mapping, not only in a string.
-- Issue #12166: Move implementations of dir() specialized for various types into
- the __dir__() methods of those types.
+- Issue #16613: Add *m* argument to ``collections.Chainmap.new_child`` to
+ allow the new child map to be specified explicitly.
-- Issue #5715: In socketserver, close the server socket in the child process.
+- Issue #16730: importlib.machinery.FileFinder now no longers raises an
+ exception when trying to populate its cache and it finds out the directory is
+ unreadable or has turned into a file. Reported and diagnosed by
+ David Pritchard.
-- Correct lookup of __dir__ on objects. Among other things, this causes errors
- besides AttributeError found on lookup to be propagated.
+- Issue #16906: Fix a logic error that prevented most static strings from being
+ cleared.
-- Issue #12060: Use sig_atomic_t type and volatile keyword in the signal
- module. Patch written by Charles-François Natali.
+- Issue #11461: Fix the incremental UTF-16 decoder. Original patch by
+ Amaury Forgeot d'Arc.
-- Issue #1746656: Added the if_nameindex, if_indextoname, if_nametoindex
- methods to the socket module.
+- Issue #16856: Fix a segmentation fault from calling repr() on a dict with
+ a key whose repr raise an exception.
-- Issue #12044: Fixed subprocess.Popen when used as a context manager to
- wait for the process to end when exiting the context to avoid unintentionally
- leaving zombie processes around.
+- Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB.
-- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
- clear the end-of-file indicator after CTRL+d.
+- Issue #16761: Calling int() with base argument only now raises TypeError.
-- Issue #1856: Avoid crashes and lockups when daemon threads run while the
- interpreter is shutting down; instead, these threads are now killed when
- they try to take the GIL.
+- Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py
+ when retrieving a REG_DWORD value. This corrects functions like
+ winreg.QueryValueEx that may have been returning truncated values.
-- Issue #9756: When calling a method descriptor or a slot wrapper descriptor,
- the check of the object type doesn't read the __class__ attribute anymore.
- Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
- str type). Patch written by Andreas Stührk.
+- Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg
+ when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.
-- Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_*
- APIs, to avoid a crash with the pthread implementation in RHEL 5. Patch
- by Charles-François Natali.
+- Issue #11939: Set the st_dev attribute of stat_result to allow Windows to
+ take advantage of the os.path.samefile/sameopenfile/samestat implementations
+ used by other platforms.
-- Issue #10914: Initialize correctly the filesystem codec when creating a new
- subinterpreter to fix a bootstrap issue with codecs implemented in Python, as
- the ISO-8859-15 codec.
+- Issue #16772: The int() constructor's second argument (base) no longer
+ accepts non integer values. Consistent with the behavior in Python 2.
-- Issue #11918: OS/2 and VMS are no more supported because of the lack of
- maintainer.
+- Issue #14470: Remove w9xpopen support per PEP 11.
-- Issue #6780: fix starts/endswith error message to mention that tuples are
- accepted too.
+- Issue #9856: Replace deprecation warning with raising TypeError
+ in object.__format__. Patch by Florent Xicluna.
-- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files
- between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP
- chars (e.g. "\U00012345"[0]).
+- Issue #16597: In buffered and text IO, call close() on the underlying stream
+ if invoking flush() fails.
-- Issue #11845: Fix typo in rangeobject.c that caused a crash in
- compute_slice_indices. Patch by Daniel Urban.
+- Issue #16722: In the bytes() constructor, try to call __bytes__ on the
+ argument before __index__.
-- Issue #5673: Added a `timeout` keyword argument to subprocess.Popen.wait,
- subprocess.Popen.communicated, subprocess.call, subprocess.check_call, and
- subprocess.check_output. If the blocking operation takes more than `timeout`
- seconds, the `subprocess.TimeoutExpired` exception is raised.
+- Issue #16421: loading multiple modules from one shared object is now
+ handled correctly (previously, the first module loaded from that file
+ was silently returned). Patch by Václav Šmilauer.
-- Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted
- (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
- written by Charles-Francois Natali.
+- Issue #16602: When a weakref's target was part of a long deallocation
+ chain, the object could remain reachable through its weakref even though
+ its refcount had dropped to zero.
-- Issue #9319: Include the filename in "Non-UTF8 code ..." syntax error.
+- Issue #16495: Remove extraneous NULL encoding check from bytes_decode().
-- Issue #10785: Store the filename as Unicode in the Python parser.
+- Issue #16619: Create NameConstant AST class to represent None, True, and False
+ literals. As a result, these constants are never loaded at runtime from
+ builtins.
-- Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes
- on Windows.
+- Issue #16455: On FreeBSD and Solaris, if the locale is C, the
+ ASCII/surrogateescape codec is now used (instead of the locale encoding) to
+ decode the command line arguments. This change fixes inconsistencies with
+ os.fsencode() and os.fsdecode(), because these operating systems announce an
+ ASCII locale encoding, but actually use the ISO-8859-1 encoding in practice.
-- Issue #10998: Remove mentions of -Q, sys.flags.division_warning and
- Py_DivisionWarningFlag left over from Python 2.
+- Issue #16562: Optimize dict equality testing. Patch by Serhiy Storchaka.
-- Issue #11244: Remove an unnecessary peepholer check that was preventing
- negative zeros from being constant-folded properly.
+- Issue #16588: Silence unused-but-set warnings in Python/thread_pthread
-- Issue #11395: io.FileIO().write() clamps the data length to 32,767 bytes on
- Windows if the file is a TTY to workaround a Windows bug. The Windows console
- returns an error (12: not enough space error) on writing into stdout if
- stdout mode is binary and the length is greater than 66,000 bytes (or less,
- depending on heap usage).
+- Issue #16592: stringlib_bytes_join doesn't raise MemoryError on allocation
+ failure.
-- Issue #11320: fix bogus memory management in Modules/getpath.c, leading to
- a possible crash when calling Py_SetPath().
+- Issue #16546: Fix: ast.YieldFrom argument is now mandatory.
-- Issue #11432: A bug was introduced in subprocess.Popen on posix systems with
- 3.2.0 where the stdout or stderr file descriptor being the same as the stdin
- file descriptor would raise an exception. webbrowser.open would fail. fixed.
+- Issue #16514: Fix regression causing a traceback when sys.path[0] is None
+ (actually, any non-string or non-bytes type).
-- Issue #9856: Change object.__format__ with a non-empty format string
- to be a DeprecationWarning. In 3.2 it was a PendingDeprecationWarning.
- In 3.4 it will be a TypeError.
+- Issue #16306: Fix multiple error messages when unknown command line
+ parameters where passed to the interpreter. Patch by Hieu Nguyen.
-- Issue #11244: The peephole optimizer is now able to constant-fold
- arbitrarily complex expressions. This also fixes a 3.2 regression where
- operations involving negative numbers were not constant-folded.
+- Issue #16215: Fix potential double memory free in str.replace(). Patch
+ by Serhiy Storchaka.
-- Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when
- there are many tags (e.g. when using mq). Patch by Nadeem Vawda.
+- Issue #16290: A float return value from the __complex__ special method is no
+ longer accepted in the complex() constructor.
-- Issue #11335: Fixed a memory leak in list.sort when the key function
- throws an exception.
+- Issue #16416: On Mac OS X, operating system data are now always
+ encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding
+ (which may be ASCII if no locale environment variable is set), to avoid
+ inconsistencies with os.fsencode() and os.fsdecode() functions which are
+ already using UTF-8/surrogateescape.
-- Issue #8923: When a string is encoded to UTF-8 in strict mode, the result is
- cached into the object. Examples: str.encode(), str.encode('utf-8'),
- PyUnicode_AsUTF8String() and PyUnicode_AsEncodedString(unicode, "utf-8",
- NULL).
+- Issue #16453: Fix equality testing of dead weakref objects.
-- Issue #10829: Refactor PyUnicode_FromFormat(), use the same function to parse
- the format string in the 3 steps, fix crashs on invalid format strings.
+- Issue #9535: Fix pending signals that have been received but not yet
+ handled by Python to not persist after os.fork() in the child process.
-- Issue #13007: whichdb should recognize gdbm 1.9 magic numbers.
+- Issue #14794: Fix slice.indices to return correct results for huge values,
+ rather than raising OverflowError.
-- Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with
- a buffer struct having a NULL data pointer.
+- Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor
+ Stinner.
-- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and
- sys.stdin uses universal newline (replace '\r\n' by '\n').
+- Issue #8271: the utf-8 decoder now outputs the correct number of U+FFFD
+ characters when used with the 'replace' error handler on invalid utf-8
+ sequences. Patch by Serhiy Storchaka, tests by Ezio Melotti.
-- Issue #11828: startswith and endswith now accept None as slice index.
- Patch by Torsten Becker.
+- Issue #5765: Apply a hard recursion limit in the compiler instead of
+ blowing the stack and segfaulting. Initial patch by Andrea Griffini.
-- Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx().
- It encoded the Unicode filename to UTF-8, but the encoding fails on
- undecodable filename (on surrogate characters) which raises an unexpected
- UnicodeEncodeError on recursion limit.
+- Issue #16402: When slicing a range, fix shadowing of exceptions from
+ __index__.
-- Issue #11187: Remove bootstrap code (use ASCII) of
- PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the
- locale encoding) in PyUnicode_EncodeFSDefault().
+- Issue #16336: fix input checking in the surrogatepass error handler.
+ Patch by Serhiy Storchaka.
-- Check for NULL result in PyType_FromSpec.
+- Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now
+ raises an error.
-- Issue #10516: New copy() and clear() methods for lists and bytearrays.
+- Issue #7317: Display full tracebacks when an error occurs asynchronously.
+ Patch by Alon Horev with update by Alexey Kachayev.
-- Issue #11386: bytearray.pop() now throws IndexError when the bytearray is
- empty, instead of OverflowError.
+- Issue #16309: Make PYTHONPATH="" behavior the same as if PYTHONPATH
+ not set at all.
-- Issue #12380: The rjust, ljust and center methods of bytes and bytearray
- now accept a bytearray argument.
+- Issue #10189: Improve the error reporting of SyntaxErrors related to global
+ and nonlocal statements.
-Library
--------
+- Fix segfaults on setting __qualname__ on builtin types and attempting to
+ delete it on any type.
-- Issue #14195: An issue that caused weakref.WeakSet instances to incorrectly
- return True for a WeakSet instance 'a' in both 'a < a' and 'a > a' has been
- fixed.
+- Issue #14625: Rewrite the UTF-32 decoder. It is now 3x to 4x faster. Patch
+ written by Serhiy Storchaka.
-- Issue #14166: Pickler objects now have an optional ``dispatch_table``
- attribute which allows to set custom per-pickler reduction functions.
- Patch by sbt.
+- Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass
+ received a nonempty dict from the constructor.
-- Issue #14177: marshal.loads() now raises TypeError when given an unicode
- string. Patch by Guilherme Gonçalves.
+- Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a
+ class's __dict__ and on type.
-- Issue #13550: Remove the debug machinery from the threading module: remove
- verbose arguments from all threading classes and functions.
+- Issue #12805: Make bytes.join and bytearray.join faster when the separator
+ is empty. Patch by Serhiy Storchaka.
-- Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary,
- WeakValueDictionary) to return a better approximation when some objects
- are dead or dying. Moreover, the implementation is now O(1) rather than
- O(n).
+- Issue #6074: Ensure cached bytecode files can always be updated by the
+ user that created them, even when the source file is read-only.
-- Issue #11841: Fix comparison bug with 'rc' versions in packaging.version.
- Patch by Filip Gruszczyński.
+- Issue #15958: bytes.join and bytearray.join now accept arbitrary buffer
+ objects.
-- Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils
- on Windows. Also fixed in packaging.
+- Issue #14783: Improve int() docstring and switch docstrings for str(),
+ range(), and slice() to use multi-line signatures.
-- Issue #8033: sqlite3: Fix 64-bit integer handling in user functions
- on 32-bit architectures. Initial patch by Philippe Devalkeneer.
+- Issue #16160: Subclass support now works for types.SimpleNamespace.
-- HTMLParser is now able to handle slashes in the start tag.
+- Issue #16148: Implement PEP 424, adding operator.length_hint and
+ PyObject_LengthHint.
-- Issue #13641: Decoding functions in the base64 module now accept ASCII-only
- unicode strings. Patch by Catalin Iacob.
+- Upgrade Unicode data (UCD) to version 6.2.
-- Issue #14043: Speed up importlib's _FileFinder by at least 8x, and add a
- new importlib.invalidate_caches() function.
+- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
+ decoder (already working as unicode strings). Patch by Serhiy Storchaka.
-- Issue #14001: CVE-2012-0845: xmlrpc: Fix an endless loop in
- SimpleXMLRPCServer upon malformed POST request.
+- Issue #15144: Fix possible integer overflow when handling pointers as integer
+ values, by using `Py_uintptr_t` instead of `size_t`. Patch by Serhiy
+ Storchaka.
-- Issue #13961: Move importlib over to using os.replace() for atomic renaming.
+- Issue #15965: Explicitly cast `AT_FDCWD` as (int). Required on Solaris 10
+ (which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms.
-- Do away with ambiguous level values (as suggested by PEP 328) in
- importlib.__import__() by raising ValueError when level < 0.
+- Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors.
-- Issue #2489: pty.spawn could consume 100% cpu when it encountered an EOF.
+- Issue #15448: Buffered IO now frees the buffer when closed, instead
+ of when deallocating.
-- Issue #13014: Fix a possible reference leak in SSLSocket.getpeercert().
+- Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
+ exception handler on code with syntax errors.
-- Issue #13777: Add PF_SYSTEM sockets on OS X.
- Patch by Michael Goderbauer.
+- Issue #15897: zipimport.c doesn't check return value of fseek().
+ Patch by Felipe Cruz.
-- Issue #13015: Fix a possible reference leak in defaultdict.__repr__.
- Patch by Suman Saha.
+- Issue #15801: Make sure mappings passed to '%' formatting are actually
+ subscriptable.
-- Issue #1326113: distutils' and packaging's build_ext commands option now
- correctly parses multiple values (separated by whitespace or commas) given
- to their --libraries option.
+- Issue #15111: __import__ should propagate ImportError when raised as a
+ side-effect of a module triggered from using fromlist.
-- Issue #10287: nntplib now queries the server's CAPABILITIES first before
- sending MODE READER, and only sends it if not already in READER mode.
- Patch by Hynek Schlawack.
+- Issue #15022: Add pickle and comparison support to types.SimpleNamespace.
-- Issue #13993: HTMLParser is now able to handle broken end tags when
- strict=False.
+Library
+-------
-- Issue #13930: lib2to3 now supports writing converted output files to another
- directory tree as well as copying unchanged files and altering the file
- suffix.
+- Issue #4331: Added functools.partialmethod (Initial patch by Alon Horev)
-- Issue #9750: Fix sqlite3.Connection.iterdump on tables and fields
- with a name that is a keyword or contains quotes. Patch by Marko
- Kohtala.
+- Issue #13461: Fix a crash in the TextIOWrapper.tell method on 64-bit
+ platforms. Patch by Yogesh Chaudhari.
-- Issue #10287: nntplib now queries the server's CAPABILITIES again after
- authenticating (since the result may change, according to RFC 4643).
- Patch by Hynek Schlawack.
+- Issue #18681: Fix a NameError in importlib.reload() (noticed by Weizhao Li).
-- Issue #13590: On OS X 10.7 and 10.6 with Xcode 4.2, building
- Distutils-based packages with C extension modules may fail because
- Apple has removed gcc-4.2, the version used to build python.org
- 64-bit/32-bit Pythons. If the user does not explicitly override
- the default C compiler by setting the CC environment variable,
- Distutils will now attempt to compile extension modules with clang
- if gcc-4.2 is required but not found. Also as a convenience, if
- the user does explicitly set CC, substitute its value as the default
- compiler in the Distutils LDSHARED configuration variable for OS X.
- (Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u
- SDK, neither of which are available in Xcode 4. This change does not
- attempt to override settings to support their use with Xcode 4.)
+- Issue #14323: Expanded the number of digits in the coefficients for the
+ RGB -- YIQ conversions so that they match the FCC NTSC versions.
-- Issue #13960: HTMLParser is now able to handle broken comments when
- strict=False.
+- Issue #17998: Fix an internal error in regular expression engine.
-- When '' is a path (e.g. in sys.path), make sure __file__ uses the current
- working directory instead of '' in importlib.
+- Issue #17557: Fix os.getgroups() to work with the modified behavior of
+ getgroups(2) on OS X 10.8. Original patch by Mateusz Lenik.
-- Issue #13609: Add two functions to query the terminal size:
- os.get_terminal_size (low level) and shutil.get_terminal_size (high level).
- Patch by Zbigniew Jędrzejewski-Szmek.
+- Issue #18608: Avoid keeping a strong reference to the locale module
+ inside the _io module.
-- Issue #13845: On Windows, time.time() now uses GetSystemTimeAsFileTime()
- instead of ftime() to have a resolution of 100 ns instead of 1 ms (the clock
- accuracy is between 0.5 ms and 15 ms).
+- Issue #18619: Fix atexit leaking callbacks registered from sub-interpreters,
+ and make it GC-aware.
-- Issue #13846: Add time.monotonic(), monotonic clock.
+- Issue #15699: The readline module now uses PEP 3121-style module
+ initialization, so as to reclaim allocated resources (Python callbacks)
+ at shutdown. Original patch by Robin Schreiber.
-- Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on
- Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to
- make sure two listeners can't bind to the same socket/pipe (or any existing
- socket/pipe).
+- Issue #17616: wave.open now supports the context management protocol.
-- Issue #10811: Fix recursive usage of cursors. Instead of crashing,
- raise a ProgrammingError now.
+- Issue #18599: Fix name attribute of _sha1.sha1() object. It now returns
+ 'SHA1' instead of 'SHA'.
-- Issue #13734: Add os.fwalk(), a directory walking function yielding file
- descriptors.
+- Issue #13266: Added inspect.unwrap to easily unravel __wrapped__ chains
+ (initial patch by Daniel Urban and Aaron Iles)
-- Issue #2945: Make the distutils upload command aware of bdist_rpm products.
+- Issue #18561: Skip name in ctypes' _build_callargs() if name is NULL.
-- Issue #13712: pysetup create should not convert package_data to extra_files.
+- Issue #18559: Fix NULL pointer dereference error in _pickle module
-- Issue #11805: package_data in setup.cfg should allow more than one value.
+- Issue #18556: Check the return type of PyUnicode_AsWideChar() in ctype's
+ U_set().
-- Issue #13676: Handle strings with embedded zeros correctly in sqlite3.
+- Issue #17818: aifc.getparams now returns a namedtuple.
-- Issue #8828: Add new function os.replace(), for cross-platform renaming
- with overwriting.
+- Issue #18549: Eliminate dead code in socket_ntohl()
-- Issue #13848: open() and the FileIO constructor now check for NUL
- characters in the file name. Patch by Hynek Schlawack.
+- Issue #18530: Remove additional stat call from posixpath.ismount.
+ Patch by Alex Gaynor.
-- Issue #13806: The size check in audioop decompression functions was too
- strict and could reject valid compressed data. Patch by Oleg Plakhotnyuk.
+- Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj()
-- Issue #13812: When a multiprocessing Process child raises an exception,
- flush stderr after printing the exception traceback.
+- Issue #9177: Calling read() or write() now raises ValueError, not
+ AttributeError, on a closed SSL socket. Patch by Senko Rasic.
-- Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC
- IV attack countermeasure.
+- Issue #18513: Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 +
+ gcc.
-- Issue #13847: time.localtime() and time.gmtime() now raise an OSError instead
- of ValueError on failure. time.ctime() and time.asctime() now raises an
- OSError if localtime() failed. time.clock() now raises a RuntimeError if the
- processor time used is not available or its value cannot be represented
+- Issue #18479: Changed venv Activate.ps1 to make deactivate a function, and
+ removed Deactivate.ps1.
-- Issue #13772: In os.symlink() under Windows, do not try to guess the link
- target's type (file or directory). The detection was buggy and made the
- call non-atomic (therefore prone to race conditions).
+- Issue #18480: Add missing call to PyType_Ready to the _elementtree extension.
-- Issue #6631: Disallow relative file paths in urllib urlopen methods.
+- Issue #17778: Fix test discovery for test_multiprocessing. (Patch by
+ Zachary Ware.)
-- Issue #13722: Avoid silencing ImportErrors when initializing the codecs
- registry.
+- Issue #18393: The private module _gestalt and private functions
+ platform._mac_ver_gestalt, platform._mac_ver_lookup and
+ platform._bcd2str have been removed. This does not affect the public
+ interface of the platform module.
-- Issue #13781: Fix GzipFile bug that caused an exception to be raised when
- opening for writing using a fileobj returned by os.fdopen().
+- Issue #17482: functools.update_wrapper (and functools.wraps) now set the
+ __wrapped__ attribute correctly even if the underlying function has a
+ __wrapped__ attribute set.
-- Issue #13803: Under Solaris, distutils doesn't include bitness
- in the directory name.
+- Issue #18431: The new email header parser now decodes RFC2047 encoded words
+ in structured headers.
-- Issue #10278: Add time.wallclock() function, monotonic clock.
+- Issue #18432: The sched module's queue method was incorrectly returning
+ an iterator instead of a list.
-- Issue #13809: Fix regression where bz2 module wouldn't work when threads are
- disabled. Original patch by Amaury Forgeot d'Arc.
+- Issue #18044: The new email header parser was mis-parsing encoded words where
+ an encoded character immediately followed the '?' that follows the CTE
+ character, resulting in a decoding failure. They are now decoded correctly.
-- Issue #13589: Fix some serialization primitives in the aifc module.
- Patch by Oleg Plakhotnyuk.
+- Issue #18101: Tcl.split() now process strings nested in a tuple as it
+ do with byte strings.
-- Issue #13642: Unquote before b64encoding user:password during Basic
- Authentication. Patch contributed by Joonas Kuorilehto.
+- Issue #18116: getpass was always getting an error when testing /dev/tty,
+ and thus was always falling back to stdin, and would then raise an exception
+ if stdin could not be used (such as /dev/null). It also leaked an open file.
+ All of these issues are now fixed.
-- Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor.
- The hang would occur when retrieving the result of a scheduled future after
- the executor had been shut down.
+- Issue #17198: Fix a NameError in the dbm module. Patch by Valentina
+ Mukhamedzhanova.
-- Issue #13502: threading: Fix a race condition in Event.wait() that made it
- return False when the event was set and cleared right after.
+- Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form.
-- Issue #9993: When the source and destination are on different filesystems,
- and the source is a symlink, shutil.move() now recreates a symlink on the
- destination instead of copying the file contents. Patch by Jonathan Niehof
- and Hynek Schlawack.
+- Issue #18020: improve html.escape speed by an order of magnitude.
+ Patch by Matt Bryant.
-- Issue #12926: Fix a bug in tarfile's link extraction.
+- Issue #18347: ElementTree's html serializer now preserves the case of
+ closing tags.
-- Issue #13696: Fix the 302 Relative URL Redirection problem.
+- Issue #17261: Ensure multiprocessing's proxies use proper address.
-- Issue #13636: Weak ciphers are now disabled by default in the ssl module
- (except when SSLv2 is explicitly asked for).
+- Issue #18343: faulthandler.register() now keeps the previous signal handler
+ when the function is called twice, so faulthandler.unregister() restores
+ correctly the original signal handler.
-- Issue #12715: Add an optional symlinks argument to shutil functions
- (copyfile, copymode, copystat, copy, copy2). When that parameter is
- true, symlinks aren't dereferenced and the operation instead acts on the
- symlink itself (or creates one, if relevant). Patch by Hynek Schlawack.
+- Issue #17097: Make multiprocessing ignore EINTR.
-- Add a flags parameter to select.epoll.
+- Issue #18339: Negative ints keys in unpickler.memo dict no longer cause a
+ segfault inside the _pickle C extension.
-- Issue #13626: Add support for SSL Diffie-Hellman key exchange, through the
- SSLContext.load_dh_params() method and the ssl.OP_SINGLE_DH_USE option.
+- Issue #18240: The HMAC module is no longer restricted to bytes and accepts
+ any bytes-like object, e.g. memoryview. Original patch by Jonas Borgström.
-- Issue #11006: Don't issue low level warning in subprocess when pipe2() fails.
+- Issue #18224: Removed pydoc script from created venv, as it causes problems
+ on Windows and adds no value over and above python -m pydoc ...
-- Issue #13620: Support for Chrome browser in webbrowser. Patch contributed
- by Arnaud Calmettes.
+- Issue #18155: The csv module now correctly handles csv files that use
+ a delimter character that has a special meaning in regexes, instead of
+ throwing an exception.
-- Issue #11829: Fix code execution holes in inspect.getattr_static for
- metaclasses with metaclasses. Patch by Andreas Stührk.
+- Issue #14360: encode_quopri can now be successfully used as an encoder
+ when constructing a MIMEApplication object.
-- Issue #12708: Add starmap() and starmap_async() methods (similar to
- itertools.starmap()) to multiprocessing.Pool. Patch by Hynek Schlawack.
+- Issue #11390: Add -o and -f command line options to the doctest CLI to
+ specify doctest options (and convert it to using argparse).
-- Issue #1785: Fix inspect and pydoc with misbehaving descriptors.
+- Issue #18135: ssl.SSLSocket.write() now raises an OverflowError if the input
+ string in longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain()
+ raises a ValueError if the password is longer than 2 gigabytes. The ssl
+ module does not support partial write.
-- Issue #13637: "a2b" functions in the binascii module now accept ASCII-only
- unicode strings.
+- Issue #11016: Add C implementation of the stat module as _stat.
-- Issue #13634: Add support for querying and disabling SSL compression.
+- Issue #18248: Fix libffi build on AIX.
-- Issue #13627: Add support for SSL Elliptic Curve-based Diffie-Hellman
- key exchange, through the SSLContext.set_ecdh_curve() method and the
- ssl.OP_SINGLE_ECDH_USE option.
+- Issue #18259: Declare sethostname in socketmodule.c for AIX
-- Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers
- choose the cipher based on their own preferences, rather than on the
- client's.
+- Issue #18147: Add diagnostic functions to ssl.SSLContext(). get_ca_list()
+ lists all loaded CA certificates and cert_store_stats() returns amount of
+ loaded X.509 certs, X.509 CA certs and CRLs.
-- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas
- Stührk.
+- Issue #18167: cgi.FieldStorage no longer fails to handle multipart/form-data
+ when ``\r\n`` appears at end of 65535 bytes without other newlines.
-- Issue #7502: Fix equality comparison for DocTestCase instances. Patch by
- Cédric Krier.
+- Issue #18076: Introduce importlib.util.decode_source().
-- Issue #11870: threading: Properly reinitialize threads internal locks and
- condition variables to avoid deadlocks in child processes.
+- Issue #18357: add tests for dictview set difference.
+ Patch by Fraser Tweedale.
-- Issue #8035: urllib: Fix a bug where the client could remain stuck after a
- redirection or an error.
+- importlib.abc.SourceLoader.get_source() no longer changes SyntaxError or
+ UnicodeDecodeError into ImportError.
-- Issue #13560: os.strerror() now uses the current locale encoding instead of
- UTF-8.
+- Issue #18058, 18057: Make the namespace package loader meet the
+ importlib.abc.InspectLoader ABC, allowing for namespace packages to work with
+ runpy.
-- Issue #8373: The filesystem path of AF_UNIX sockets now uses the filesystem
- encoding and the surrogateescape error handler, rather than UTF-8. Patch
- by David Watson.
+- Issue #17177: The imp module is pending deprecation.
-- Issue #10350: Read and save errno before calling a function which might
- overwrite it. Original patch by Hallvard B Furuseth.
+- subprocess: Prevent a possible double close of parent pipe fds when the
+ subprocess exec runs into an error. Prevent a regular multi-close of the
+ /dev/null fd when any of stdin, stdout and stderr was set to DEVNULL.
-- Issue #11610: Introduce a more general way to declare abstract properties.
+- Issue #18194: Introduce importlib.util.cache_from_source() and
+ source_from_cache() while documenting the equivalent functions in imp as
+ deprecated.
-- Issue #13591: A bug in importlib has been fixed that caused import_module
- to load a module twice.
+- Issue #17907: Document imp.new_module() as deprecated in favour of
+ types.ModuleType.
-- Issue #13449 sched.scheduler.run() method has a new "blocking" parameter which
- when set to False makes run() execute the scheduled events due to expire
- soonest (if any) and then return. Patch by Giampaolo Rodolà.
+- Issue #18192: Introduce importlib.util.MAGIC_NUMBER and document as deprecated
+ imp.get_magic().
-- Issue #8684 sched.scheduler class can be safely used in multi-threaded
- environments. Patch by Josiah Carlson and Giampaolo Rodolà.
+- Issue #18149: Add filecmp.clear_cache() to manually clear the filecmp cache.
+ Patch by Mark Levitt
-- Alias resource.error to OSError ala PEP 3151.
+- Issue #18193: Add importlib.reload().
-- Issue #5689: Add support for lzma compression to the tarfile module.
+- Issue #18157: Stop using imp.load_module() in pydoc.
-- Issue #13248: Turn 3.2's PendingDeprecationWarning into 3.3's
- DeprecationWarning. It covers 'cgi.escape', 'importlib.abc.PyLoader',
- 'importlib.abc.PyPycLoader', 'nntplib.NNTP.xgtitle', 'nntplib.NNTP.xpath',
- and private attributes of 'smtpd.SMTPChannel'.
+- Issue #16102: Make uuid._netbios_getnode() work again on Python 3.
-- Issue #5905, Issue #13560: time.strftime() is now using the current locale
- encoding, instead of UTF-8, if the wcsftime() function is not available.
+- Issue #17134: Add ssl.enum_cert_store() as interface to Windows' cert store.
-- Issue #13464: Add a readinto() method to http.client.HTTPResponse. Patch
- by Jon Kuhn.
+- Issue #18143: Implement ssl.get_default_verify_paths() in order to debug
+ the default locations for cafile and capath.
-- tarfile.py: Correctly detect bzip2 compressed streams with blocksizes
- other than 900k.
+- Issue #17314: Move multiprocessing.forking over to importlib.
-- Issue #13439: Fix many errors in turtle docstrings.
+- Issue #11959: SMTPServer and SMTPChannel now take an optional map, use of
+ which avoids affecting global state.
-- Issue #6715: Add a module 'lzma' for compression using the LZMA algorithm.
- Thanks to Per Øyvind Karlsen for the initial implementation.
+- Issue #18109: os.uname() now decodes fields from the locale encoding, and
+ socket.gethostname() now decodes the hostname from the locale encoding,
+ instead of using the UTF-8 encoding in strict mode.
-- Issue #13487: Make inspect.getmodule robust against changes done to
- sys.modules while it is iterating over it.
+- Issue #18089: Implement importlib.abc.InspectLoader.load_module.
-- Issue #12618: Fix a bug that prevented py_compile from creating byte
- compiled files in the current directory. Initial patch by Sjoerd de Vries.
+- Issue #18088: Introduce importlib.abc.Loader.init_module_attrs for setting
+ module attributes. Leads to the pending deprecation of
+ importlib.util.module_for_loader.
-- Issue #13444: When stdout has been closed explicitly, we should not attempt
- to flush it at shutdown and print an error.
+- Issue #17403: urllib.parse.robotparser normalizes the urls before adding to
+ ruleline. This helps in handling certain types invalid urls in a conservative
+ manner. Patch contributed by Mher Movsisyan.
-- Issue #12567: The curses module uses Unicode functions for Unicode arguments
- when it is linked to the ncurses library. It encodes also Unicode strings to
- the locale encoding instead of UTF-8.
+- Issue #18070: Have importlib.util.module_for_loader() set attributes
+ unconditionally in order to properly support reloading.
-- Issue #12856: Ensure child processes do not inherit the parent's random
- seed for filename generation in the tempfile module. Patch by Brian
- Harring.
+- Added importlib.util.module_to_load to return a context manager to provide the
+ proper module object to load.
-- Issue #9957: SpooledTemporaryFile.truncate() now accepts an optional size
- parameter, as other file-like objects. Patch by Ryan Kelly.
+- Issue #18025: Fixed a segfault in io.BufferedIOBase.readinto() when raw
+ stream's read() returns more bytes than requested.
-- Issue #13458: Fix a memory leak in the ssl module when decoding a
- certificate with a subjectAltName. Patch by Robert Xiao.
+- Issue #18011: As was originally intended, base64.b32decode() now raises a
+ binascii.Error if there are non-b32-alphabet characters present in the input
+ string, instead of a TypeError.
-- Issue #13415: os.unsetenv() doesn't ignore errors anymore.
+- Issue #18072: Implement importlib.abc.InspectLoader.get_code() and
+ importlib.abc.ExecutionLoader.get_code().
-- Issue #13245: sched.scheduler class constructor's timefunc and
- delayfunct parameters are now optional.
- scheduler.enter and scheduler.enterabs methods gained a new kwargs parameter.
- Patch contributed by Chris Clark.
+- Issue #8240: Set the SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER flag on SSL
+ sockets.
-- Issue #12328: Under Windows, refactor handling of Ctrl-C events and
- make _multiprocessing.win32.WaitForMultipleObjects interruptible when
- the wait_flag parameter is false. Patch by sbt.
+- Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X
+ with port None or "0" and flags AI_NUMERICSERV.
-- Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is
- raised when the wrapped raw file is non-blocking and the write would block.
- Previous code assumed that the raw write() would raise BlockingIOError, but
- RawIOBase.write() is defined to returned None when the call would block.
- Patch by sbt.
+- Issue #16986: ElementTree now correctly works with string input when the
+ internal XML encoding is not UTF-8 or US-ASCII.
-- Issue #13358: HTMLParser now calls handle_data only once for each CDATA.
+- Issue #17996: socket module now exposes AF_LINK constant on BSD and OSX.
-- Issue #4147: minidom's toprettyxml no longer adds whitespace around a text
- node when it is the only child of an element. Initial patch by Dan
- Kenigsberg.
+- Issue #17900: Allowed pickling of recursive OrderedDicts. Decreased pickled
+ size and pickling time.
-- Issue #13374: The Windows bytes API has been deprecated in the os module. Use
- Unicode filenames instead of bytes filenames to not depend on the ANSI code
- page anymore and to support any filename.
+- Issue #17914: Add os.cpu_count(). Patch by Yogesh Chaudhari, based on an
+ initial patch by Trent Nelson.
-- Issue #13297: Use bytes type to send and receive binary data through XMLRPC.
+- Issue #17812: Fixed quadratic complexity of base64.b32encode().
+ Optimize base64.b32encode() and base64.b32decode() (speed up to 3x).
-- Issue #6397: Support "/dev/poll" polling objects in select module,
- under Solaris & derivatives.
+- Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of
+ service using certificates with many wildcards (CVE-2013-2099).
-- Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly
- handles non-valid attributes, including adjacent and unquoted attributes.
+- Issue #15758: Fix FileIO.readall() so it no longer has O(n**2) complexity.
-- Issue #13193: Fix distutils.filelist.FileList and packaging.manifest.Manifest
- under Windows.
+- Issue #14596: The struct.Struct() objects now use a more compact
+ implementation.
-- Issue #13384: Remove unnecessary __future__ import in Lib/random.py
+- Issue #17981: logging's SysLogHandler now closes the socket when it catches
+ socket OSErrors.
-- Issue #13149: Speed up append-only StringIO objects.
+- Issue #17964: Fix os.sysconf(): the return type of the C sysconf() function
+ is long, not int.
-- Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely
- when called with a timeout. Patch by Arnaud Ysmal.
+- Fix typos in the multiprocessing module.
-- Issue #13254: Fix Maildir initialization so that maildir contents
- are read correctly.
+- Issue #17754: Make ctypes.util.find_library() independent of the locale.
-- Issue #3067: locale.setlocale() now raises TypeError if the second
- argument is an invalid iterable. Its documentation and docstring
- were also updated. Initial patch by Jyrki Pulliainen.
+- Issue #17968: Fix memory leak in os.listxattr().
-- Issue #13140: Fix the daemon_threads attribute of ThreadingMixIn.
+- Issue #17606: Fixed support of encoded byte strings in the XMLGenerator
+ characters() and ignorableWhitespace() methods. Original patch by Sebastian
+ Ortiz Vasquez.
-- Issue #13339: Fix compile error in posixmodule.c due to missing semicolon.
- Thanks to Robert Xiao.
+- Issue #17732: Ignore distutils.cfg options pertaining to install paths if a
+ virtual environment is active.
-- Byte compilation in packaging is now isolated from the calling Python -B or
- -O options, instead of being disallowed under -B or buggy under -O.
+- Issue #17915: Fix interoperability of xml.sax with file objects returned by
+ codecs.open().
-- Issue #10570: curses.putp() and curses.tparm() are now expecting a byte
- string, instead of a Unicode string.
+- Issue #16601: Restarting iteration over tarfile really restarts rather
+ than continuing from where it left off. Patch by Michael Birtwell.
-- Issue #13295: http.server now produces valid HTML 4.01 strict.
+- Issue #17289: The readline module now plays nicer with external modules
+ or applications changing the rl_completer_word_break_characters global
+ variable. Initial patch by Bradley Froehle.
-- Issue #2892: preserve iterparse events in case of SyntaxError.
+- Issue #12181: select module: Fix struct kevent definition on OpenBSD 64-bit
+ platforms. Patch by Federico Schwindt.
-- Issue #13287: urllib.request and urllib.error now contains an __all__
- attribute to expose only relevant classes and functions. Patch by Florent
- Xicluna.
+- Issue #11816: multiple improvements to the dis module: get_instructions
+ generator, ability to redirect output to a file, Bytecode and Instruction
+ abstractions. Patch by Nick Coghlan, Ryan Kelly and Thomas Kluyver.
-- Issue #670664: Fix HTMLParser to correctly handle the content of
- ``<script>...</script>`` and ``<style>...</style>``.
+- Issue #13831: Embed stringification of remote traceback in local
+ traceback raised when pool task raises an exception.
-- Issue #10817: Fix urlretrieve function to raise ContentTooShortError even
- when reporthook is None. Patch by Jyrki Pulliainen.
+- Issue #15528: Add weakref.finalize to support finalization using
+ weakref callbacks.
-- Fix the xmlrpc.client user agent to return something similar to
- urllib.request user agent: "Python-xmlrpc/3.3".
+- Issue #14173: Avoid crashing when reading a signal handler during
+ interpreter shutdown.
-- Issue #13293: Better error message when trying to marshal bytes using
- xmlrpc.client.
+- Issue #15902: Fix imp.load_module() accepting None as a file when loading an
+ extension module.
-- Issue #13291: NameError in xmlrpc package.
+- Issue #13721: SSLSocket.getpeercert() and SSLSocket.do_handshake() now
+ raise an OSError with ENOTCONN, instead of an AttributeError, when the
+ SSLSocket is not connected.
-- Issue #13258: Use callable() built-in in the standard library.
+- Issue #14679: add an __all__ (that contains only HTMLParser) to html.parser.
-- Issue #13273: fix a bug that prevented HTMLParser to properly detect some
- tags when strict=False.
+- Issue #17802: Fix an UnboundLocalError in html.parser. Initial tests by
+ Thomas Barlow.
-- Issue #11183: Add finer-grained exceptions to the ssl module, so that
- you don't have to inspect the exception's attributes in the common case.
+- Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by
+ extention load_module()) now have a better chance of working when reloaded.
-- Issue #13216: Add cp65001 codec, the Windows UTF-8 (CP_UTF8).
+- Issue #17804: New function ``struct.iter_unpack`` allows for streaming
+ struct unpacking.
-- Issue #13226: Add RTLD_xxx constants to the os module. These constants can be
- used with sys.setdlopenflags().
+- Issue #17830: When keyword.py is used to update a keyword file, it now
+ preserves the line endings of the original file.
-- Issue #10278: Add clock_getres(), clock_gettime() and CLOCK_xxx constants to
- the time module. time.clock_gettime(time.CLOCK_MONOTONIC) provides a
- monotonic clock
+- Issue #17272: Making the urllib.request's Request.full_url a descriptor.
+ Fixes bugs with assignment to full_url. Patch by Demian Brecht.
-- Issue #10332: multiprocessing: fix a race condition when a Pool is closed
- before all tasks have completed.
+- Issue #17353: Plistlib emitted empty data tags with deeply nested datastructures
-- Issue #13255: wrong docstrings in array module.
+- Issue #11714: Use 'with' statements to assure a Semaphore releases a
+ condition variable. Original patch by Thomas Rachel.
-- Issue #8540: Remove deprecated Context._clamp attribute in Decimal module.
+- Issue #16624: `subprocess.check_output` now accepts an `input` argument,
+ allowing the subprocess's stdin to be provided as a (byte) string.
+ Patch by Zack Weinberg.
-- Issue #13235: Added DeprecationWarning to logging.warn() method and function.
+- Issue #17795: Reverted backwards-incompatible change in SysLogHandler with
+ Unix domain sockets.
-- Issue #9168: now smtpd is able to bind privileged port.
+- Issue #16694: Add a pure Python implementation of the operator module.
+ Patch by Zachary Ware.
-- Issue #12529: fix cgi.parse_header issue on strings with double-quotes and
- semicolons together. Patch by Ben Darnell and Petri Lehtinen.
+- Issue #11182: remove the unused and undocumented pydoc.Scanner class.
+ Patch by Martin Morrison.
-- Issue #13227: functools.lru_cache() now has a option to distinguish
- calls with different argument types.
+- Issue #17741: Add ElementTree.XMLPullParser, an event-driven parser for
+ non-blocking applications.
-- Issue #6090: zipfile raises a ValueError when a document with a timestamp
- earlier than 1980 is provided. Patch contributed by Petri Lehtinen.
+- Issue #17555: Fix ForkAwareThreadLock so that size of after fork
+ registry does not grow exponentially with generation of process.
-- Issue #13150: sysconfig no longer parses the Makefile and config.h files
- when imported, instead doing it at build time. This makes importing
- sysconfig faster and reduces Python startup time by 20%.
+- Issue #17707: fix regression in multiprocessing.Queue's get() method where
+ it did not block for short timeouts.
-- Issue #12448: smtplib now flushes stdout while running ``python -m smtplib``
- in order to display the prompt correctly.
+- Issue #17720: Fix the Python implementation of pickle.Unpickler to correctly
+ process the APPENDS opcode when it is used on non-list objects.
-- Issue #12454: The mailbox module is now using ASCII, instead of the locale
- encoding, to read and write .mh_sequences files.
+- Issue #17012: shutil.which() no longer falls back to the PATH environment
+ variable if an empty path argument is specified. Patch by Serhiy Storchaka.
-- Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are
- now available on Windows.
+- Issue #17710: Fix pickle raising a SystemError on bogus input.
-- Issue #1673007: urllib.request now supports HEAD request via new method argument.
- Patch contributions by David Stanek, Patrick Westerhoff and Ezio Melotti.
+- Issue #17341: Include the invalid name in the error messages from re about
+ invalid group names.
-- Issue #12386: packaging does not fail anymore when writing the RESOURCES
- file.
+- Issue #17702: os.environ now raises KeyError with the original environment
+ variable name (str on UNIX), instead of using the encoded name (bytes on
+ UNIX).
-- Issue #13158: Fix decoding and encoding of GNU tar specific base-256 number
- fields in tarfile.
+- Issue #16163: Make the importlib based version of pkgutil.iter_importers
+ work for submodules. Initial patch by Berker Peksag.
-- Issue #13025: mimetypes is now reading MIME types using the UTF-8 encoding,
- instead of the locale encoding.
+- Issue #16804: Fix a bug in the 'site' module that caused running
+ 'python -S -m site' to incorrectly throw an exception.
-- Issue #10653: On Windows, use strftime() instead of wcsftime() because
- wcsftime() doesn't format time zone correctly.
+- Issue #15480: Remove the deprecated and unused TYPE_INT64 code from marshal.
+ Initial patch by Daniel Riti.
-- Issue #13150: The tokenize module doesn't compile large regular expressions
- at startup anymore.
+- Issue #2118: SMTPException is now a subclass of OSError.
-- Issue #11171: Fix distutils.sysconfig.get_makefile_filename when Python was
- configured with different prefix and exec-prefix.
+- Issue #17016: Get rid of possible pointer wraparounds and integer overflows
+ in the re module. Patch by Nickolai Zeldovich.
- - Issue #16658: add missing return to HTTPConnection.send()
-- Issue #11254: Teach distutils and packaging to compile .pyc and .pyo files in
- PEP 3147-compliant __pycache__ directories.
++- Issue #16658: add missing return to HTTPConnection.send().
+ Patch by Jeff Knupp.
-- Issue #7367: Fix pkgutil.walk_paths to skip directories whose
- contents cannot be read.
+- Issue #9556: the logging package now allows specifying a time-of-day for a
+ TimedRotatingFileHandler to rotate.
-- Issue #3163: The struct module gets new format characters 'n' and 'N'
- supporting C integer types ``ssize_t`` and ``size_t``, respectively.
+- Issue #14971: unittest test discovery no longer gets confused when a function
+ has a different __name__ than its name in the TestCase class dictionary.
-- Issue #13099: Fix sqlite3.Cursor.lastrowid under a Turkish locale.
- Reported and diagnosed by Thomas Kluyver.
+- Issue #17487: The wave getparams method now returns a namedtuple rather than
+ a plain tuple.
-- Issue #13087: BufferedReader.seek() now always raises UnsupportedOperation
- if the underlying raw stream is unseekable, even if the seek could be
- satisfied using the internal buffer. Patch by John O'Connor.
+- Issue #17675: socket repr() provides local and remote addresses (if any).
+ Patch by Giampaolo Rodola'
-- Issue #7689: Allow pickling of dynamically created classes when their
- metaclass is registered with copyreg. Patch by Nicolas M. Thiéry and Craig
- Citro.
+- Issue #17093: Make the ABCs in importlib.abc provide default values or raise
+ reasonable exceptions for their methods to make them more amenable to super()
+ calls.
-- Issue #13034: When decoding some SSL certificates, the subjectAltName
- extension could be unreported.
+- Issue #17566: Make importlib.abc.Loader.module_repr() optional instead of an
+ abstractmethod; now it raises NotImplementedError so as to be ignored by default.
-- Issue #12306: Expose the runtime version of the zlib C library as a constant,
- ZLIB_RUNTIME_VERSION, in the zlib module. Patch by Torsten Landschoff.
+- Issue #17678: Remove the use of deprecated method in http/cookiejar.py by
+ changing the call to get_origin_req_host() to origin_req_host.
-- Issue #12959: Add collections.ChainMap to collections.__all__.
+- Issue #17666: Fix reading gzip files with an extra field.
-- Issue #8933: distutils' PKG-INFO files and packaging's METADATA files will
- now correctly report Metadata-Version: 1.1 instead of 1.0 if a Classifier or
- Download-URL field is present.
+- Issue #16475: Support object instancing, recursion and interned strings
+ in marshal
-- Issue #12567: Add curses.unget_wch() function. Push a character so the next
- get_wch() will return it.
+- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
-- Issue #9561: distutils and packaging now writes egg-info files using UTF-8,
- instead of the locale encoding.
+- Issue #16795: On the ast.arguments object, unify vararg with varargannotation
+ and kwarg and kwargannotation. Change the column offset of ast.Attribute to be
+ at the attribute name.
-- Issue #8286: The distutils command sdist will print a warning message instead
- of crashing when an invalid path is given in the manifest template.
+- Issue #17434: Properly raise a SyntaxError when a string occurs between future
+ imports.
-- Issue #12841: tarfile unnecessarily checked the existence of numerical user
- and group ids on extraction. If one of them did not exist the respective id
- of the current user (i.e. root) was used for the file and ownership
- information was lost.
+- Issue #17117: Import and @importlib.util.set_loader now set __loader__ when
+ it has a value of None or the attribute doesn't exist.
-- Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape
- more than 128 entities. Patch by Peter Otten.
+- Issue #17032: The "global" in the "NameError: global name 'x' is not defined"
+ error message has been removed. Patch by Ram Rachum.
-- Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses.
+- Issue #18080: When building a C extension module on OS X, if the compiler
+ is overriden with the CC environment variable, use the new compiler as
+ the default for linking if LDSHARED is not also overriden. This restores
+ Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0.
-- Issue #12494: On error, call(), check_call(), check_output() and
- getstatusoutput() functions of the subprocess module now kill the process,
- read its status (to avoid zombis) and close pipes.
+- Issue #18113: Fixed a refcount leak in the curses.panel module's
+ set_userptr() method. Reported by Atsuo Ishimoto.
-- Issue #12720: Expose low-level Linux extended file attribute functions in os.
+- Implement PEP 443 "Single-dispatch generic functions".
-- Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi
- now respect a --skip-build option given to bdist. The packaging commands
- were fixed too.
+- Implement PEP 435 "Adding an Enum type to the Python standard library".
-- Issue #12847: Fix a crash with negative PUT and LONG_BINPUT arguments in
- the C pickle implementation.
+- Issue #15596: Faster pickling of unicode strings.
-- Issue #11564: Avoid crashes when trying to pickle huge objects or containers
- (more than 2**31 items). Instead, in most cases, an OverflowError is raised.
+- Issue #17572: Avoid chained exceptions when passing bad directives to
+ time.strptime(). Initial patch by Claudiu Popa.
-- Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is
- greater than FD_SETSIZE.
+- Issue #17435: threading.Timer's __init__ method no longer uses mutable
+ default values for the args and kwargs parameters.
-- Issue #12839: Fix crash in zlib module due to version mismatch.
- Fix by Richard M. Tew.
+- Issue #17526: fix an IndexError raised while passing code without filename to
+ inspect.findsource(). Initial patch by Tyler Doyle.
-- Issue #9923: The mailcap module now correctly uses the platform path
- separator for the MAILCAP environment variable on non-POSIX platforms.
+- Issue #17540: Added style parameter to logging formatter configuration by dict.
-- Issue #12835: Follow up to #6560 that unconditionally prevents use of the
- unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets. Patch by David
- Watson.
+- Issue #16692: The ssl module now supports TLS 1.1 and TLS 1.2. Initial
+ patch by Michele Orrù.
-- Issue #12803: SSLContext.load_cert_chain() now accepts a password argument
- to be used if the private key is encrypted. Patch by Adam Simpkins.
+- Issue #17025: multiprocessing: Reduce Queue and SimpleQueue contention.
-- Issue #11657: Fix sending file descriptors over 255 over a multiprocessing
- Pipe.
+- Issue #17536: Add to webbrowser's browser list: www-browser, x-www-browser,
+ iceweasel, iceape.
-- Issue #12811: tabnanny.check() now promptly closes checked files. Patch by
- Anthony Briggs.
+- Issue #17150: pprint now uses line continuations to wrap long string
+ literals.
-- Issue #6560: The sendmsg/recvmsg API is now exposed by the socket module
- when provided by the underlying platform, supporting processing of
- ancillary data in pure Python code. Patch by David Watson and Heiko Wundram.
+- Issue #17488: Change the subprocess.Popen bufsize parameter default value
+ from unbuffered (0) to buffering (-1) to match the behavior existing code
+ expects and match the behavior of the subprocess module in Python 2 to avoid
+ introducing hard to track down bugs.
-- Issue #12326: On Linux, sys.platform doesn't contain the major version
- anymore. It is now always 'linux', instead of 'linux2' or 'linux3' depending
- on the Linux version used to build Python.
+- Issue #17521: Corrected non-enabling of logger following two calls to
+ fileConfig().
-- Issue #12213: Fix a buffering bug with interleaved reads and writes that
- could appear on BufferedRandom streams.
+- Issue #17508: Corrected logging MemoryHandler configuration in dictConfig()
+ where the target handler wasn't configured first.
-- Issue #12778: Reduce memory consumption when JSON-encoding a large
- container of many small objects.
+- Issue #17209: curses.window.get_wch() now correctly handles KeyboardInterrupt
+ (CTRL+c).
-- Issue #12650: Fix a race condition where a subprocess.Popen could leak
- resources (FD/zombie) when killed at the wrong time.
+- Issue #5713: smtplib now handles 421 (closing connection) error codes when
+ sending mail by closing the socket and reporting the 421 error code via the
+ exception appropriate to the command that received the error response.
-- Issue #12744: Fix inefficient representation of integers between 2**31 and
- 2**63 on systems with a 64-bit C "long".
+- Issue #16997: unittest.TestCase now provides a subTest() context manager
+ to procedurally generate, in an easy way, small test instances.
-- Issue #12646: Add an 'eof' attribute to zlib.Decompress, to make it easier to
- detect truncated input streams.
+- Issue #17485: Also delete the Request Content-Length header if the data
+ attribute is deleted. (Follow on to issue Issue #16464).
-- Issue #11513: Fix exception handling ``tarfile.TarFile.gzopen()`` when
- the file cannot be opened.
+- Issue #15927: CVS now correctly parses escaped newlines and carriage
+ when parsing with quoting turned off.
-- Issue #12687: Fix a possible buffering bug when unpickling text mode
- (protocol 0, mostly) pickles.
+- Issue #17467: add readline and readlines support to mock_open in
+ unittest.mock.
-- Issue #10087: Fix the html output format of the calendar module.
+- Issue #13248: removed deprecated and undocumented difflib.isbjunk,
+ isbpopular.
-- Issue #13121: add support for inplace math operators to collections.Counter.
+- Issue #17192: Update the ctypes module's libffi to v3.0.13. This
+ specifically addresses a stack misalignment issue on x86 and issues on
+ some more recent platforms.
-- Add support for unary plus and unary minus to collections.Counter.
+- Issue #8862: Fixed curses cleanup when getkey is interrputed by a signal.
-- Issue #12683: urlparse updated to include svn as schemes that uses relative
- paths. (svn from 1.5 onwards support relative path).
+- Issue #17443: imaplib.IMAP4_stream was using the default unbuffered IO
+ in subprocess, but the imap code assumes buffered IO. In Python2 this
+ worked by accident. IMAP4_stream now explicitly uses buffered IO.
-- Issue #12655: Expose functions from sched.h in the os module: sched_yield(),
- sched_setscheduler(), sched_getscheduler(), sched_setparam(),
- sched_get_min_priority(), sched_get_max_priority(), sched_rr_get_interval(),
- sched_getaffinity(), sched_setaffinity().
+- Issue #17476: Fixed regression relative to Python2 in undocumented pydoc
+ 'allmethods'; it was missing unbound methods on the class.
-- Add ThreadError to threading.__all__.
+- Issue #17474: Remove the deprecated methods of Request class.
-- Issues #11104, #8688: Fix the behavior of distutils' sdist command with
- manually-maintained MANIFEST files.
+- Issue #16709: unittest discover order is no-longer filesystem specific. Patch
+ by Jeff Ramnani.
-- Issue #11281: smtplib.STMP gets source_address parameter, which adds the
- ability to bind to specific source address on a machine with multiple
- interfaces. Patch by Paulo Scardine.
+- Use the HTTPS PyPI url for upload, overriding any plain HTTP URL in pypirc.
-- Issue #12464: tempfile.TemporaryDirectory.cleanup() should not follow
- symlinks: fix it. Patch by Petri Lehtinen.
+- Issue #5024: sndhdr.whichhdr now returns the frame count for WAV files
+ rather than -1.
-- Issue #8887: "pydoc somebuiltin.somemethod" (or help('somebuiltin.somemethod')
- in Python code) now finds the doc of the method.
+- Issue #17460: Remove the strict argument of HTTPConnection and removing the
+ DeprecationWarning being issued from 3.2 onwards.
-- Issue #10968: Remove indirection in threading. The public names (Event,
- Condition, etc.) used to be factory functions returning instances of hidden
- classes (_Event, _Condition, etc.), because (if Guido recalls correctly) this
- code pre-dates the ability to subclass extension types. It is now possible
- to inherit from these classes, without having to import the private
- underscored names like multiprocessing did.
+- Issue #16880: Do not assume _imp.load_dynamic() is defined in the imp module.
-- Issue #9723: Add shlex.quote functions, to escape filenames and command
- lines.
+- Issue #16389: Fixed a performance regression relative to Python 3.1 in the
+ caching of compiled regular expressions.
-- Issue #12603: Fix pydoc.synopsis() on files with non-negative st_mtime.
+- Added missing FeedParser and BytesFeedParser to email.parser.__all__.
-- Issue #12514: Use try/finally to assure the timeit module restores garbage
- collections when it is done.
+- Issue #17431: Fix missing import of BytesFeedParser in email.parser.
-- Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is
- given as a low fd, it gets overwritten.
+- Issue #12921: http.server's send_error takes an explain argument to send more
+ information in response. Patch contributed by Karl.
-- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscates)
- ``Connection: close`` header.
+- Issue #17414: Add timeit, repeat, and default_timer to timeit.__all__.
-- Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling.
+- Issue #1285086: Get rid of the refcounting hack and speed up
+ urllib.parse.unquote() and urllib.parse.unquote_to_bytes().
-- Issue #1813: Fix codec lookup under Turkish locales.
+- Issue #17099: Have importlib.find_loader() raise ValueError when __loader__
+ is not set, harmonizing with what happens when the attribute is set to None.
-- Issue #12591: Improve support of "universal newlines" in the subprocess
- module: the piped streams can now be properly read from or written to.
+- Expose the O_PATH constant in the os module if it is available.
-- Issue #12591: Allow io.TextIOWrapper to work with raw IO objects (without
- a read1() method), and add a *write_through* parameter to mandate
- unbuffered writes.
+- Issue #17368: Fix an off-by-one error in the Python JSON decoder that caused
+ a failure while decoding empty object literals when object_pairs_hook was
+ specified.
-- Issue #10883: Fix socket leaks in urllib.request when using FTP.
+- Issue #17385: Fix quadratic behavior in threading.Condition. The FIFO
+ queue now uses a deque instead of a list.
-- Issue #12592: Make Python build on OpenBSD 5 (and future major releases).
+- Issue #15806: Add contextlib.ignore(). This creates a context manager to
+ ignore specified exceptions, replacing the "except SomeException: pass" idiom.
-- Issue #12372: POSIX semaphores are broken on AIX: don't use them.
+- Issue #14645: The email generator classes now produce output using the
+ specified linesep throughout. Previously if the prolog, epilog, or
+ body were stored with a different linesep, that linesep was used. This
+ fix corrects an RFC non-compliance issue with smtplib.send_message.
-- Issue #12551: Provide a get_channel_binding() method on SSL sockets so as
- to get channel binding data for the current SSL session (only the
- "tls-unique" channel binding is implemented). This allows the implementation
- of certain authentication mechanisms such as SCRAM-SHA-1-PLUS. Patch by
- Jacek Konieczny.
+- Issue #17278: Fix a crash in heapq.heappush() and heapq.heappop() when
+ the list is being resized concurrently.
-- Issue #665194: email.utils now has format_datetime and parsedate_to_datetime
- functions, allowing for round tripping of RFC2822 format dates.
+- Issue #16962: Use getdents64 instead of the obsolete getdents syscall
+ in the subprocess module on Linux.
-- Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2
- directory, so that "import DLFCN" and other similar imports work on
- Linux 3.0.
+- Issue #16935: unittest now counts the module as skipped if it raises SkipTest,
+ instead of counting it as an error. Patch by Zachary Ware.
-- Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN
- commands; they aren't required and in fact postfix doesn't support that form.
+- Issue #17018: Make Process.join() retry if os.waitpid() fails with EINTR.
-- Issue #12273: Remove ast.__version__. AST changes can be accounted for by
- checking sys.version_info or sys._mercurial.
+- Issue #17223: array module: Fix a crasher when converting an array containing
+ invalid characters (outside range [U+0000; U+10ffff]) to Unicode:
+ repr(array), str(array) and array.tounicode(). Patch written by Manuel Jacob.
-- Silence spurious "broken pipe" tracebacks when shutting down a
- ProcessPoolExecutor.
+- Issue #17197: profile/cProfile modules refactored so that code of run() and
+ runctx() utility functions is not duplicated in both modules.
-- Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor
- by joining all queues and processes when shutdown() is called.
+- Issue #14720: sqlite3: Convert datetime microseconds correctly.
+ Patch by Lowe Thiderman.
-- Issue #11603: Fix a crash when __str__ is rebound as __repr__. Patch by
- Andreas Stührk.
+- Issue #15132: Allow a list for the defaultTest argument of
+ unittest.TestProgram. Patch by Jyrki Pulliainen.
-- Issue #11321: Fix a crash with multiple imports of the _pickle module when
- embedding Python. Patch by Andreas Stührk.
+- Issue #17225: JSON decoder now counts columns in the first line starting
+ with 1, as in other lines.
-- Issue #6755: Add get_wch() method to curses.window class. Patch by Iñigo
- Serna.
+- Issue #6623: Added explicit DeprecationWarning for ftplib.netrc, which has
+ been deprecated and undocumented for a long time.
-- Add cgi.closelog() function to close the log file.
+- Issue #13700: Fix byte/string handling in imaplib authentication when an
+ authobject is specified.
-- Issue #12502: asyncore: fix polling loop with AF_UNIX sockets.
+- Issue #13153: Tkinter functions now raise TclError instead of ValueError when
+ a string argument contains non-BMP character.
-- Issue #4376: ctypes now supports nested structures in a endian different than
- the parent structure. Patch by Vlad Riscutia.
+- Issue #9669: Protect re against infinite loops on zero-width matching in
+ non-greedy repeat. Patch by Matthew Barnett.
-- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
- TextIOWrapper to a huge value, not TypeError.
+- Issue #13169: The maximal repetition number in a regular expression has been
+ increased from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on
+ 64-bit).
-- Issue #12504: Close file handles in a timely manner in packaging.database.
- This fixes a bug with the remove (uninstall) feature on Windows.
+- Issue #17143: Fix a missing import in the trace module. Initial patch by
+ Berker Peksag.
-- Issues #12169 and #10510: Factor out code used by various packaging commands
- to make HTTP POST requests, and make sure it uses CRLF.
+- Issue #15220: email.feedparser's line splitting algorithm is now simpler and
+ faster.
-- Issue #12016: Multibyte CJK decoders now resynchronize faster. They only
- ignore the first byte of an invalid byte sequence. For example,
- b'\xff\n'.decode('gb2312', 'replace') gives '\ufffd\n' instead of '\ufffd'.
+- Issue #16743: Fix mmap overflow check on 32 bit Windows.
-- Issue #12459: time.sleep() now raises a ValueError if the sleep length is
- negative, instead of an infinite sleep on Windows or raising an IOError on
- Linux for example, to have the same behaviour on all platforms.
+- Issue #16996: webbrowser module now uses shutil.which() to find a
+ web-browser on the executable search path.
-- Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support
- Python scripts using a encoding different than UTF-8 (read the coding cookie
- of the script).
+- Issue #16800: tempfile.gettempdir() no longer left temporary files when
+ the disk is full. Original patch by Amir Szekely.
-- Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors
- if the process has only one pipe.
+- Issue #17192: Import libffi-3.0.12.
-- Issue #12467: warnings: fix a race condition if a warning is emitted at
- shutdown, if globals()['__file__'] is None.
+- Issue #16564: Fixed regression relative to Python2 in the operation of
+ email.encoders.encode_7or8bit when used with binary data.
-- Issue #12451: pydoc: importfile() now opens the Python script in binary mode,
- instead of text mode using the locale encoding, to avoid encoding issues.
+- Issue #17052: unittest discovery should use self.testLoader.
-- Issue #12451: runpy: run_path() now opens the Python script in binary mode,
- instead of text mode using the locale encoding, to support other encodings
- than UTF-8 (scripts using the coding cookie).
+- Issue #4591: Uid and gid values larger than 2**31 are supported now.
-- Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead
- of the text mode (using the locale encoding) to avoid encoding issues.
+- Issue #17141: random.vonmisesvariate() no longer hangs for large kappas.
-- Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better
- conformance to the RFCs: correctly handle Sender and Resent- headers.
+- Issue #17149: Fix random.vonmisesvariate to always return results in
+ [0, 2*math.pi].
-- Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by
- the garbage collector while the Heap lock is held.
+- Issue #1470548: XMLGenerator now works with binary output streams.
-- Issue #12462: time.sleep() now immediately calls the (Python) signal handler
- if it is interrupted by a signal, instead of having to wait until the next
- instruction.
+- Issue #6975: os.path.realpath() now correctly resolves multiple nested
+ symlinks on POSIX platforms.
-- Issue #12442: new shutil.disk_usage function, providing total, used and free
- disk space statistics.
+- Issue #13773: sqlite3.connect() gets a new `uri` parameter to pass the
+ filename as a URI, allowing to pass custom options.
-- Issue #12451: The XInclude default loader of xml.etree now decodes files from
- UTF-8 instead of the locale encoding if the encoding is not specified. It now
- also opens XML files for the parser in binary mode instead of the text mode
- to avoid encoding issues.
+- Issue #16564: Fixed regression relative to Python2 in the operation of
+ email.encoders.encode_noop when used with binary data.
-- Issue #12451: doctest.debug_script() doesn't create a temporary file
- anymore to avoid encoding issues.
+- Issue #10355: The mode, name, encoding and newlines properties now work on
+ SpooledTemporaryFile objects even when they have not yet rolled over.
+ Obsolete method xreadline (which has never worked in Python 3) has been
+ removed.
-- Issue #12451: pydoc.synopsis() now reads the encoding cookie if available,
- to read the Python script from the right encoding.
+- Issue #16686: Fixed a lot of bugs in audioop module. Fixed crashes in
+ avgpp(), maxpp() and ratecv(). Fixed an integer overflow in add(), bias(),
+ and ratecv(). reverse(), lin2lin() and ratecv() no more lose precision for
+ 32-bit samples. max() and rms() no more returns a negative result and
+ various other functions now work correctly with 32-bit sample -0x80000000.
-- Issue #12451: distutils now opens the setup script in binary mode to read the
- encoding cookie, instead of opening it in UTF-8.
+- Issue #17073: Fix some integer overflows in sqlite3 module.
-- Issue #9516: On Mac OS X, change Distutils to no longer globally attempt to
- check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the
- interpreter process. This could cause failures in non-Distutils subprocesses
- and was unreliable since tests or user programs could modify the interpreter
- environment after Distutils set it. Instead, have Distutils set the
- deployment target only in the environment of each build subprocess. It is
- still possible to globally override the default by setting
- MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be
- greater or equal to the default value, the value with which the interpreter
- was built. Also, implement the same handling in packaging.
+- Issue #16723: httplib.HTTPResponse no longer marked closed when the connection
+ is automatically closed.
-- Issue #12422: In the copy module, don't store objects that are their own copy
- in the memo dict.
+- Issue #15359: Add CAN_BCM protocol support to the socket module. Patch by
+ Brian Thorne.
-- Issue #12303: Add sigwaitinfo() and sigtimedwait() to the signal module.
+- Issue #16948: Fix quoted printable body encoding for non-latin1 character
+ sets in the email package.
-- Issue #12404: Remove C89 incompatible code from mmap module. Patch by Akira
- Kitada.
+- Issue #16811: Fix folding of headers with no value in the provisional email
+ policies.
-- Issue #1874: email now detects and reports as a defect the presence of
- any CTE other than 7bit, 8bit, or binary on a multipart.
+- Issue #17132: Update symbol for "yield from" grammar changes.
-- Issue #12383: Fix subprocess module with env={}: don't copy the environment
- variables, start with an empty environment.
+- Issue #17076: Make copying of xattrs more tolerant of missing FS support.
+ Patch by Thomas Wouters.
-- Issue #11637: Fix support for importing packaging setup hooks from the
- project directory.
+- Issue #17089: Expat parser now correctly works with string input when the
+ internal XML encoding is not UTF-8 or US-ASCII. It also now accepts bytes
+ and strings larger than 2 GiB.
-- Issue #6771: Moved the curses.wrapper function from the single-function
- wrapper module into __init__, eliminating the module. Since __init__ was
- already importing the function to curses.wrapper, there is no API change.
+- Issue #6083: Fix multiple segmentation faults occured when PyArg_ParseTuple
+ parses nested mutating sequence.
-- Issue #11584: email.header.decode_header no longer fails if the header
- passed to it is a Header object, and Header/make_header no longer fail
- if given binary unknown-8bit input.
+- Issue #5289: Fix ctypes.util.find_library on Solaris.
-- Issue #11700: mailbox proxy object close methods can now be called multiple
- times without error.
+- Issue #17106: Fix a segmentation fault in io.TextIOWrapper when an underlying
+ stream or a decoder produces data of an unexpected type (i.e. when
+ io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec).
-- Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method.
+- Issue #17015: When it has a spec, a Mock object now inspects its signature
+ when matching calls, so that arguments can be matched positionally or
+ by name.
-- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP
- connection if its getresponse() method fails with a socket error. Patch
- written by Ezio Melotti.
+- Issue #15633: httplib.HTTPResponse is now mark closed when the server
+ sends less than the advertised Content-Length.
-- Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files.
- Original patch by Erik Bray.
+- Issue #12268: The io module file object write methods no longer abort early
+ when one of its write system calls is interrupted (EINTR).
-- Issue #9284: Allow inspect.findsource() to find the source of doctest
- functions.
+- Issue #6972: The zipfile module no longer overwrites files outside of
+ its destination path when extracting malicious zip files.
-- Issue #11595: Fix assorted bugs in packaging.util.cfg_to_args, a
- compatibility helper for the distutils-packaging transition. Original patch
- by Erik Bray.
+- Issue #4844: ZipFile now raises BadZipFile when opens a ZIP file with an
+ incomplete "End of Central Directory" record. Original patch by Guilherme
+ Polo and Alan McIntyre.
-- Issue #12287: In ossaudiodev, check that the device isn't closed in several
- methods.
+- Issue #17071: Signature.bind() now works when one of the keyword arguments
+ is named ``self``.
-- Issue #12009: Fixed regression in netrc file comment handling.
+- Issue #12004: Fix an internal error in PyZipFile when writing an invalid
+ Python file. Patch by Ben Morgan.
-- Issue #12246: Warn and fail when trying to install a third-party project from
- an uninstalled Python (built in a source checkout). Original patch by
- Tshepang Lekhonkhobe.
+- Have py_compile use importlib as much as possible to avoid code duplication.
+ Code now raises FileExistsError if the file path to be used for the
+ byte-compiled file is a symlink or non-regular file as a warning that import
+ will not keep the file path type if it writes to that path.
-- Issue #10694: zipfile now ignores garbage at the end of a zipfile.
+- Issue #16972: Have site.addpackage() consider already known paths even when
+ none are explicitly passed in. Bug report and fix by Kirill.
-- Issue #12283: Fixed regression in smtplib quoting of leading dots in DATA.
+- Issue #1602133: on Mac OS X a shared library build (``--enable-shared``)
+ now fills the ``os.environ`` variable correctly.
-- Issue #10424: Argparse now includes the names of the missing required
- arguments in the missing arguments error message.
+- Issue #15505: `unittest.installHandler` no longer assumes SIGINT handler is
+ set to a callable object.
-- Issue #12168: SysLogHandler now allows NUL termination to be controlled using
- a new 'append_nul' attribute on the handler.
+- Issue #13454: Fix a crash when deleting an iterator created by itertools.tee()
+ if all other iterators were very advanced before.
-- Issue #11583: Speed up os.path.isdir on Windows by using GetFileAttributes
- instead of os.stat.
+- Issue #12411: Fix to cgi.parse_multipart to correctly use bytes boundaries
+ and bytes data. Patch by Jonas Wagner.
-- Issue #12021: Make mmap's read() method argument optional. Patch by Petri
- Lehtinen.
+- Issue #16957: shutil.which() no longer searches a bare file name in the
+ current directory on Unix and no longer searches a relative file path with
+ a directory part in PATH directories. Patch by Thomas Kluyver.
-- Issue #9205: concurrent.futures.ProcessPoolExecutor now detects killed
- children and raises BrokenProcessPool in such a situation. Previously it
- would reliably freeze/deadlock.
+- Issue #1159051: GzipFile now raises EOFError when reading a corrupted file
+ with truncated header or footer.
-- Issue #12040: Expose a new attribute ``sentinel`` on instances of
- ``multiprocessing.Process``. Also, fix Process.join() to not use polling
- anymore, when given a timeout.
+- Issue #16993: shutil.which() now preserves the case of the path and extension
+ on Windows.
-- Issue #11893: Remove obsolete internal wrapper class ``SSLFakeFile`` in the
- smtplib module. Patch by Catalin Iacob.
+- Issue #16992: On Windows in signal.set_wakeup_fd, validate the file
+ descriptor argument.
-- Issue #12080: Fix a Decimal.power() case that took an unreasonably long time
- to compute.
+- Issue #16422: For compatibility with the Python version, the C version of
+ decimal now uses strings instead of integers for rounding mode constants.
-- Issue #12221: Remove __version__ attributes from pyexpat, pickle, tarfile,
- pydoc, tkinter, and xml.parsers.expat. This were useless version constants
- left over from the Mercurial transition
+- Issue #15861: tkinter now correctly works with lists and tuples containing
+ strings with whitespaces, backslashes or unbalanced braces.
-- Named tuples now work correctly with vars().
+- Issue #9720: zipfile now writes correct local headers for files larger than
+ 4 GiB.
-- Issue #12085: Fix an attribute error in subprocess.Popen destructor if the
- constructor has failed, e.g. because of an undeclared keyword argument. Patch
- written by Oleg Oshmyan.
+- Issue #16955: Fix the poll() method for multiprocessing's socket
+ connections on Windows.
-- Issue #12028: Make threading._get_ident() public, rename it to
- threading.get_ident() and document it. This function was already used using
- _thread.get_ident().
+- SSLContext.load_dh_params() now properly closes the input file.
-- Issue #12171: IncrementalEncoder.reset() of CJK codecs (multibytecodec) calls
- encreset() instead of decreset().
+- Issue #15031: Refactor some .pyc management code to cut down on code
+ duplication. Thanks to Ronan Lamy for the report and taking an initial stab
+ at the problem.
-- Issue #12218: Removed wsgiref.egg-info.
+- Issue #16398: Optimize deque.rotate() so that it only moves pointers
+ and doesn't touch the underlying data with increfs and decrefs.
-- Issue #12196: Add pipe2() to the os module.
+- Issue #16900: Issue a ResourceWarning when an ssl socket is left unclosed.
-- Issue #985064: Make plistlib more resilient to faulty input plists.
- Patch by Mher Movsisyan.
+- Issue #13899: ``\A``, ``\Z``, and ``\B`` now correctly match the A, Z,
+ and B literals when used inside character classes (e.g. ``'[\A]'``).
+ Patch by Matthew Barnett.
-- Issue #1625: BZ2File and bz2.decompress() now support multi-stream files.
- Initial patch by Nir Aides.
+- Issue #15545: Fix regression in sqlite3's iterdump method where it was
+ failing if the connection used a row factory (such as sqlite3.Row) that
+ produced unsortable objects. (Regression was introduced by fix for 9750).
-- Issue #12175: BufferedReader.read(-1) now calls raw.readall() if available.
+- fcntl: add F_DUPFD_CLOEXEC constant, available on Linux 2.6.24+.
-- Issue #12175: FileIO.readall() now only reads the file position and size
- once.
+- Issue #15972: Fix error messages when os functions expecting a file name or
+ file descriptor receive the incorrect type.
-- Issue #12175: RawIOBase.readall() now returns None if read() returns None.
+- Issue #8109: The ssl module now has support for server-side SNI, thanks
+ to a :meth:`SSLContext.set_servername_callback` method. Patch by Daniel
+ Black.
-- Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError
- if the file is closed.
+- Issue #16860: In tempfile, use O_CLOEXEC when available to set the
+ close-on-exec flag atomically.
-- Issue #11109: New service_action method for BaseServer, used by ForkingMixin
- class for cleanup. Initial Patch by Justin Warkentin.
+- Issue #16674: random.getrandbits() is now 20-40% faster for small integers.
-- Issue #12045: Avoid duplicate execution of command in
- ctypes.util._get_soname(). Patch by Sijin Joseph.
+- Issue #16009: JSON error messages now provide more information.
-- Issue #10818: Remove the Tk GUI and the serve() function of the pydoc module,
- pydoc -g has been deprecated in Python 3.2 and it has a new enhanced web
- server.
+- Issue #16828: Fix error incorrectly raised by bz2.compress(b'') and
+ bz2.BZ2Compressor.compress(b''). Initial patch by Martin Packman.
-- Issue #1441530: In imaplib, read the data in one chunk to speed up large
- reads and simplify code.
+- Issue #16833: In http.client.HTTPConnection, do not concatenate the request
+ headers and body when the payload exceeds 16 KB, since it can consume more
+ memory for no benefit. Patch by Benno Leslie.
-- Issue #12070: Fix the Makefile parser of the sysconfig module to handle
- correctly references to "bogus variable" (e.g. "prefix=$/opt/python").
+- Issue #16541: tk_setPalette() now works with keyword arguments.
-- Issue #12100: Don't reset incremental encoders of CJK codecs at each call to
- their encode() method anymore, but continue to call the reset() method if the
- final argument is True.
+- Issue #16820: In configparser, `parser.popitem()` no longer raises ValueError.
+ This makes `parser.clean()` work correctly.
-- Issue #12049: Add RAND_bytes() and RAND_pseudo_bytes() functions to the ssl
- module.
+- Issue #16820: In configparser, ``parser['section'] = {}`` now preserves
+ section order within the parser. This makes `parser.update()` preserve section
+ order as well.
-- Issue #6501: os.device_encoding() returns None on Windows if the application
- has no console.
+- Issue #16820: In configparser, ``parser['DEFAULT'] = {}`` now correctly
+ clears previous values stored in the default section. Same goes for
+ ``parser.update({'DEFAULT': {}})``.
-- Issue #12105: Add O_CLOEXEC to the os module.
+- Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy.
-- Issue #12079: Decimal('Infinity').fma(Decimal('0'), (3.91224318126786e+19+0j))
- now raises TypeError (reflecting the invalid type of the 3rd argument) rather
- than Decimal.InvalidOperation.
+- Issue #16787: Increase asyncore and asynchat default output buffers size, to
+ decrease CPU usage and increase throughput.
-- Issue #12124: zipimport doesn't keep a reference to zlib.decompress() anymore
- to be able to unload the module.
+- Issue #10527: make multiprocessing use poll() instead of select() if available.
-- Add the packaging module, an improved fork of distutils (also known as
- distutils2).
+- Issue #16688: Now regexes contained backreferences correctly work with
+ non-ASCII strings. Patch by Matthew Barnett.
-- Issue #12065: connect_ex() on an SSL socket now returns the original errno
- when the socket's timeout expires (it used to return None).
+- Issue #16486: Make aifc files act as context managers.
-- Issue #8809: The SMTP_SSL constructor and SMTP.starttls() now support
- passing a ``context`` argument pointing to an ssl.SSLContext instance.
- Patch by Kasun Herath.
+- Issue #16485: Now file descriptors are closed if file header patching failed
+ on closing an aifc file.
-- Issue #9516: Issue #9516: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET
- is set in shell.
+- Issue #16640: Run less code under a lock in sched module.
-- Issue #8650: Make zlib module 64-bit clean. compress(), decompress() and
- their incremental counterparts now raise OverflowError if given an input
- larger than 4GB, instead of silently truncating the input and returning
- an incorrect result.
+- Issue #16165: sched.scheduler.run() no longer blocks a scheduler for other
+ threads.
-- Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
- attribute when called without a max_length argument.
+- Issue #16641: Default values of sched.scheduler.enter() are no longer
+ modifiable.
-- Issue #12062: Fix a flushing bug when doing a certain type of I/O sequence
- on a file opened in read+write mode (namely: reading, seeking a bit forward,
- writing, then seeking before the previous write but still within buffered
- data, and writing again).
+- Issue #16618: Make glob.glob match consistently across strings and bytes
+ regarding leading dots. Patch by Serhiy Storchaka.
-- Issue #9971: Write an optimized implementation of BufferedReader.readinto().
- Patch by John O'Connor.
+- Issue #16788: Add samestat to Lib/ntpath.py
-- Issue #11799: urllib.request Authentication Handlers will raise a ValueError
- when presented with an unsupported Authentication Scheme. Patch contributed
- by Yuval Greenfield.
+- Issue #16713: Parsing of 'tel' urls using urlparse separates params from
+ path.
-- Issue #10419, #6011: build_scripts command of distutils handles correctly
- non-ASCII path (path to the Python executable). Open and write the script in
- binary mode, but ensure that the shebang is decodable from UTF-8 and from the
- encoding of the script.
+- Issue #16443: Add docstrings to regular expression match objects.
+ Patch by Anton Kasyanov.
-- Issue #8498: In socket.accept(), allow to specify 0 as a backlog value in
- order to accept exactly one connection. Patch by Daniel Evers.
+- Issue #15701: Fix HTTPError info method call to return the headers information.
-- Issue #12011: signal.signal() and signal.siginterrupt() raise an OSError,
- instead of a RuntimeError: OSError has an errno attribute.
+- Issue #16752: Add a missing import to modulefinder. Patch by Berker Peksag.
-- Issue #3709: add a flush_headers method to BaseHTTPRequestHandler, which
- manages the sending of headers to output stream and flushing the internal
- headers buffer. Patch contribution by Andrew Schaaf
+- Issue #16646: ftplib.FTP.makeport() might lose socket error details.
+ (patch by Serhiy Storchaka)
-- Issue #11743: Rewrite multiprocessing connection classes in pure Python.
+- Issue #16626: Fix infinite recursion in glob.glob() on Windows when the
+ pattern contains a wildcard in the drive or UNC path. Patch by Serhiy
+ Storchaka.
-- Issue #11164: Stop trying to use _xmlplus in the xml module.
+- Issue #15783: Except for the number methods, the C version of decimal now
+ supports all None default values present in decimal.py. These values were
+ largely undocumented.
-- Issue #11888: Add log2 function to math module. Patch written by Mark
- Dickinson.
+- Issue #11175: argparse.FileType now accepts encoding and errors
+ arguments. Patch by Lucas Maystre.
-- Issue #12012: ssl.PROTOCOL_SSLv2 becomes optional.
+- Issue #16488: epoll() objects now support the `with` statement. Patch
+ by Serhiy Storchaka.
-- Issue #8407: The signal handler writes the signal number as a single byte
- instead of a nul byte into the wakeup file descriptor. So it is possible to
- wait more than one signal and know which signals were raised.
+- Issue #16298: In HTTPResponse.read(), close the socket when there is no
+ Content-Length and the incoming stream is finished. Patch by Eran
+ Rundstein.
-- Issue #8407: Add pthread_kill(), sigpending() and sigwait() functions to the
- signal module.
+- Issue #16049: Add abc.ABC class to enable the use of inheritance to create
+ ABCs, rather than the more cumbersome metaclass=ABCMeta. Patch by Bruno
+ Dupuis.
-- Issue #11927: SMTP_SSL now uses port 465 by default as documented. Patch
- by Kasun Herath.
+- Expose the TCP_FASTOPEN and MSG_FASTOPEN flags in socket when they're
+ available.
-- Issue #12002: ftplib's abort() method raises TypeError.
+- Issue #15701: Add a .headers attribute to urllib.error.HTTPError. Patch
+ contributed by Berker Peksag.
-- Issue #11916: Add a number of MacOSX specific definitions to the errno module.
- Patch by Pierre Carrier.
+- Issue #15872: Fix 3.3 regression introduced by the new fd-based shutil.rmtree
+ that caused it to not ignore certain errors when ignore_errors was set.
+ Patch by Alessandro Moura and Serhiy Storchaka.
-- Issue #11999: fixed sporadic sync failure mailbox.Maildir due to its trying to
- detect mtime changes by comparing to the system clock instead of to the
- previous value of the mtime.
+- Issue #16248: Disable code execution from the user's home directory by
+ tkinter when the -E flag is passed to Python. Patch by Zachary Ware.
-- Issue #11072: added MLSD command (RFC-3659) support to ftplib.
+- Issue #13390: New function :func:`sys.getallocatedblocks()` returns the
+ number of memory blocks currently allocated.
-- Issue #8808: The IMAP4_SSL constructor now allows passing an SSLContext
- parameter to control parameters of the secure channel. Patch by Sijin
- Joseph.
+- Issue #16628: Fix a memory leak in ctypes.resize().
-- ntpath.samefile failed to notice that "a.txt" and "A.TXT" refer to the same
- file on Windows XP. As noticed in issue #10684.
+- Issue #13614: Fix setup.py register failure with invalid rst in description.
+ Patch by Julien Courteau and Pierre Paul Lefebvre.
-- Issue #12000: When a SSL certificate has a subjectAltName without any
- dNSName entry, ssl.match_hostname() should use the subject's commonName.
- Patch by Nicolas Bareil.
+- Issue #13512: Create ~/.pypirc securely (CVE-2011-4944). Initial patch by
+ Philip Jenvey, tested by Mageia and Debian.
-- Issue #10775: assertRaises, assertRaisesRegex, assertWarns, and
- assertWarnsRegex now accept a keyword argument 'msg' when used as context
- managers. Initial patch by Winston Ewert.
+- Issue #7719: Make distutils ignore ``.nfs*`` files instead of choking later
+ on. Initial patch by SilentGhost and Jeff Ramnani.
-- Issue #10684: shutil.move used to delete a folder on case insensitive
- filesystems when the source and destination name where the same except
- for the case.
+- Issue #13120: Allow to call pdb.set_trace() from thread.
+ Patch by Ilya Sandler.
-- Issue #11647: objects created using contextlib.contextmanager now support
- more than one call to the function when used as a decorator. Initial patch
- by Ysj Ray.
+- Issue #16585: Make CJK encoders support error handlers that return bytes per
+ PEP 383.
-- Issue #11930: Removed deprecated time.accept2dyear variable.
- Removed year >= 1000 restriction from datetime.strftime.
+- Issue #10182: The re module doesn't truncate indices to 32 bits anymore.
+ Patch by Serhiy Storchaka.
-- logging: don't define QueueListener if Python has no thread support.
+- Issue #16333: use (",", ": ") as default separator in json when indent is
+ specified, to avoid trailing whitespace. Patch by Serhiy Storchaka.
-- functools.cmp_to_key() now works with collections.Hashable().
+- Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous
+ list() calls aren't added to filter(), map(), and zip() which are directly
+ passed enumerate().
-- Issue #11277: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get
- around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.
+- Issue #16464: Reset the Content-Length header when a urllib Request is reused
+ with new data.
-- Issue #8407: Add signal.pthread_sigmask() function to fetch and/or change the
- signal mask of the calling thread.
+- Issue #12848: The pure Python pickle implementation now treats object
+ lengths as unsigned 32-bit integers, like the C implementation does.
+ Patch by Serhiy Storchaka.
-- Issue #11858: configparser.ExtendedInterpolation expected lower-case section
- names.
+- Issue #16423: urllib.request now has support for ``data:`` URLs. Patch by
+ Mathias Panzenböck.
-- Issue #11324: ConfigParser(interpolation=None) now works correctly.
+- Issue #4473: Add a POP3.stls() to switch a clear-text POP3 session into
+ an encrypted POP3 session, on supported servers. Patch by Lorenzo Catucci.
-- Issue #11811: ssl.get_server_certificate() is now IPv6-compatible. Patch
- by Charles-François Natali.
+- Issue #4473: Add a POP3.capa() method to query the capabilities advertised
+ by the POP3 server. Patch by Lorenzo Catucci.
-- Issue #11763: don't use difflib in TestCase.assertMultiLineEqual if the
- strings are too long.
+- Issue #4473: Ensure the socket is shutdown cleanly in POP3.close().
+ Patch by Lorenzo Catucci.
-- Issue #11236: getpass.getpass responds to ctrl-c or ctrl-z on terminal.
+- Issue #16522: added FAIL_FAST flag to doctest.
-- Issue #11856: Speed up parsing of JSON numbers.
+- Issue #15627: Add the importlib.abc.InspectLoader.source_to_code() method.
-- Issue #11005: threading.RLock()._release_save() raises a RuntimeError if the
- lock was not acquired.
+- Issue #16408: Fix file descriptors not being closed in error conditions
+ in the zipfile module. Patch by Serhiy Storchaka.
-- Issue #11258: Speed up ctypes.util.find_library() under Linux by a factor
- of 5 to 10. Initial patch by Jonas H.
+- Issue #14631: Add a new :class:`weakref.WeakMethod` to simulate weak
+ references to bound methods.
-- Issue #11382: Trivial system calls, such as dup() or pipe(), needn't
- release the GIL. Patch by Charles-François Natali.
+- Issue #16469: Fix exceptions from float -> Fraction and Decimal -> Fraction
+ conversions for special values to be consistent with those for float -> int
+ and Decimal -> int. Patch by Alexey Kachayev.
-- Issue #11223: Add threading._info() function providing informations about
- the thread implementation.
+- Issue #16481: multiprocessing no longer leaks process handles on Windows.
-- Issue #11731: simplify/enhance email parser/generator API by introducing
- policy objects.
+- Issue #12428: Add a pure Python implementation of functools.partial().
+ Patch by Brian Thorne.
-- Issue #11768: The signal handler of the signal module only calls
- Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or
- parallel calls. PyErr_SetInterrupt() writes also into the wake up file.
+- Issue #16140: The subprocess module no longer double closes its child
+ subprocess.PIPE parent file descriptors on child error prior to exec().
-- Issue #11492: fix several issues with header folding in the email package.
+- Remove a bare print to stdout from the subprocess module that could have
+ happened if the child process wrote garbage to its pre-exec error pipe.
-- Issue #11852: Add missing imports and update tests.
+- The subprocess module now raises its own SubprocessError instead of a
+ RuntimeError in various error situations which should not normally happen.
-- Issue #11875: collections.OrderedDict's __reduce__ was temporarily
- mutating the object instead of just working on a copy.
+- Issue #16327: The subprocess module no longer leaks file descriptors
+ used for stdin/stdout/stderr pipes to the child when fork() fails.
-- Issue #11467: Fix urlparse behavior when handling urls which contains scheme
- specific part only digits. Patch by Santoso Wijaya.
+- Issue #14396: Handle the odd rare case of waitpid returning 0 when not
+ expected in subprocess.Popen.wait().
-- collections.Counter().copy() now works correctly for subclasses.
+- Issue #16411: Fix a bug where zlib.decompressobj().flush() might try to access
+ previously-freed memory. Patch by Serhiy Storchaka.
-- Issue #11474: Fix the bug with url2pathname() handling of '/C|/' on Windows.
- Patch by Santoso Wijaya.
+- Issue #16357: fix calling accept() on a SSLSocket created through
+ SSLContext.wrap_socket(). Original patch by Jeff McNeil.
-- Issue #11684: complete email.parser bytes API by adding BytesHeaderParser.
+- Issue #16409: The reporthook callback made by the legacy
+ urllib.request.urlretrieve API now properly supplies a constant non-zero
+ block_size as it did in Python 3.2 and 2.7. This matches the behavior of
+ urllib.request.URLopener.retrieve.
-- The bz2 module now handles 4GiB+ input buffers correctly.
+- Issue #16431: Use the type information when constructing a Decimal subtype
+ from a Decimal argument.
- - Issue #15641: Clean up deprecated classes from importlib
-- Issue #9233: Fix json.loads('{}') to return a dict (instead of a list), when
- _json is not available.
++- Issue #15641: Clean up deprecated classes from importlib.
+ Patch by Taras Lyapun.
-- Issue #11830: Remove unnecessary introspection code in the decimal module.
+- Issue #16350: zlib.decompressobj().decompress() now accumulates data from
+ successive calls after EOF in unused_data, instead of only saving the argument
+ to the last call. decompressobj().flush() now correctly sets unused_data and
+ unconsumed_tail. A bug in the handling of MemoryError when setting the
+ unconsumed_tail attribute has also been fixed. Patch by Serhiy Storchaka.
-- Issue #11703: urllib2.geturl() does not return correct url when the original
- url contains #fragment.
+- Issue #12759: sre_parse now raises a proper error when the name of the group
+ is missing. Initial patch by Serhiy Storchaka.
-- Issue #10019: Fixed regression in json module where an indent of 0 stopped
- adding newlines and acted instead like 'None'.
+- Issue #16152: fix tokenize to ignore whitespace at the end of the code when
+ no newline is found. Patch by Ned Batchelder.
-- Issue #11186: pydoc ignores a module if its name contains a surrogate
- character in the index of modules.
+- Issue #16284: Prevent keeping unnecessary references to worker functions
+ in concurrent.futures ThreadPoolExecutor.
-- Issue #11815: Use a light-weight SimpleQueue for the result queue in
- concurrent.futures.ProcessPoolExecutor.
+- Issue #16230: Fix a crash in select.select() when one the lists changes
+ size while iterated on. Patch by Serhiy Storchaka.
-- Issue #5162: Treat services like frozen executables to allow child spawning
- from multiprocessing.forking on Windows.
+- Issue #16228: Fix a crash in the json module where a list changes size
+ while it is being encoded. Patch by Serhiy Storchaka.
-- logging.basicConfig now supports an optional 'handlers' argument taking an
- iterable of handlers to be added to the root logger. Additional parameter
- checks were also added to basicConfig.
+- Issue #16351: New function gc.get_stats() returns per-generation collection
+ statistics.
-- Issue #11814: Fix likely typo in multiprocessing.Pool._terminate().
+- Issue #14897: Enhance error messages of struct.pack and
+ struct.pack_into. Patch by Matti Mäki.
-- Issue #11747: Fix range formatting in difflib.context_diff() and
- difflib.unified_diff().
+- Issue #16316: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions.
+ Patch by Serhiy Storchaka.
-- Issue #8428: Fix a race condition in multiprocessing.Pool when terminating
- worker processes: new processes would be spawned while the pool is being
- shut down. Patch by Charles-François Natali.
+- Issue #12890: cgitb no longer prints spurious <p> tags in text
+ mode when the logdir option is specified.
-- Issue #2650: re.escape() no longer escapes the '_'.
+- Issue #16307: Fix multiprocessing.Pool.map_async not calling its callbacks.
+ Patch by Janne Karila.
-- Issue #11757: select.select() now raises ValueError when a negative timeout
- is passed (previously, a select.error with EINVAL would be raised). Patch
- by Charles-François Natali.
+- Issue #16305: Fix a segmentation fault occurring when interrupting
+ math.factorial.
-- Issue #7311: fix html.parser to accept non-ASCII attribute values.
+- Issue #16116: Fix include and library paths to be correct when building C
+ extensions in venvs.
-- Issue #11605: email.parser.BytesFeedParser was incorrectly converting
- multipart subparts with an 8-bit CTE into unicode instead of preserving the
- bytes.
+- Issue #16245: Fix the value of a few entities in html.entities.html5.
-- Issue #1690608: email.util.formataddr is now RFC 2047 aware: it now has a
- charset parameter that defaults to utf-8 and is used as the charset for RFC
- 2047 encoding when the realname contains non-ASCII characters.
+- Issue #16301: Fix the localhost verification in urllib/request.py for file://
+ urls.
-- Issue #10963: Ensure that subprocess.communicate() never raises EPIPE.
+- Issue #16250: Fix the invocations of URLError which had misplaced filename
+ attribute for exception.
-- Issue #10791: Implement missing method GzipFile.read1(), allowing GzipFile
- to be wrapped in a TextIOWrapper. Patch by Nadeem Vawda.
+- Issue #10836: Fix exception raised when file not found in urlretrieve
+ Initial patch by Ezio Melotti.
-- Issue #11707: Added a fast C version of functools.cmp_to_key().
- Patch by Filip Gruszczyński.
+- Issue #14398: Fix size truncation and overflow bugs in the bz2 module.
-- Issue #11688: Add sqlite3.Connection.set_trace_callback(). Patch by
- Torsten Landschoff.
+- Issue #12692: Fix resource leak in urllib.request when talking to an HTTP
+ server that does not include a ``Connection: close`` header in its responses.
-- Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve
- private keys.
+- Issue #12034: Fix bogus caching of result in check_GetFinalPathNameByHandle.
+ Patch by Atsuo Ishimoto.
-- Issue #5863: Rewrite BZ2File in pure Python, and allow it to accept
- file-like objects using a new ``fileobj`` constructor argument. Patch by
- Nadeem Vawda.
+- Improve performance of `lzma.LZMAFile` (see also issue #16034).
-- unittest.TestCase.assertSameElements has been removed.
+- Issue #16220: wsgiref now always calls close() on an iterable response.
+ Patch by Brent Tubbs.
-- sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not
- called yet: detect bootstrap (startup) issues earlier.
+- Issue #16270: urllib may hang when used for retrieving files via FTP by using
+ a context manager. Patch by Giampaolo Rodola'.
-- Issue #11393: Add the new faulthandler module.
+- Issue #16461: Wave library should be able to deal with 4GB wav files,
+ and sample rate of 44100 Hz.
-- Issue #11618: Fix the timeout logic in threading.Lock.acquire() under Windows.
+- Issue #16176: Properly identify Windows 8 via platform.platform()
-- Removed the 'strict' argument to email.parser.Parser, which has been
- deprecated since Python 2.4.
+- Issue #16088: BaseHTTPRequestHandler's send_error method includes a
+ Content-Length header in it's response now. Patch by Antoine Pitrou.
-- Issue #11256: Fix inspect.getcallargs on functions that take only keyword
- arguments.
+- Issue #16114: The subprocess module no longer provides a misleading error
+ message stating that args[0] did not exist when either the cwd or executable
+ keyword arguments specified a path that did not exist.
-- Issue #11696: Fix ID generation in msilib.
+- Issue #16169: Fix ctypes.WinError()'s confusion between errno and winerror.
-- itertools.accumulate now supports an optional *func* argument for
- a user-supplied binary function.
+- Issue #16110: logging.fileConfig now accepts a pre-initialised ConfigParser
+ instance.
-- Issue #11692: Remove unnecessary demo functions in subprocess module.
+- Issue #1492704: shutil.copyfile() raises a distinct SameFileError now if
+ source and destination are the same file. Patch by Atsuo Ishimoto.
-- Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when
- trying to pack a negative (in-range) integer.
+- Issue #13896: Make shelf instances work with 'with' as context managers.
+ Original patch by Filip Gruszczyński.
-- Issue #11675: multiprocessing.[Raw]Array objects created from an integer size
- are now zeroed on creation. This matches the behaviour specified by the
- documentation.
+- Issue #15417: Add support for csh and fish in venv activation scripts.
-- Issue #7639: Fix short file name generation in bdist_msi
+- Issue #14377: ElementTree.write and some of the module-level functions have
+ a new parameter - *short_empty_elements*. It controls how elements with no
+ contents are emitted.
-- Issue #11635: Don't use polling in worker threads and processes launched by
- concurrent.futures.
+- Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element
+ element_factory (fixes a regression in SimpleTAL).
-- Issue #5845: Automatically read readline configuration to enable completion
- in interactive mode.
+- Issue #9650: List commonly used format codes in time.strftime and
+ time.strptime docsttings. Original patch by Mike Hoy.
-- Issue #6811: Allow importlib to change a code object's co_filename attribute
- to match the path to where the source code currently is, not where the code
- object originally came from.
+- Issue #15452: logging configuration socket listener now has a verify option
+ that allows an application to apply a verification function to the
+ received configuration data before it is acted upon.
-- Issue #8754: Have importlib use the repr of a module name in error messages.
+- Issue #16034: Fix performance regressions in the new `bz2.BZ2File`
+ implementation. Initial patch by Serhiy Storchaka.
-- Issue #11591: Prevent "import site" from modifying sys.path when python
- was started with -S.
+- `pty.spawn()` now returns the child process status returned by `os.waitpid()`.
-- collections.namedtuple() now adds a _source attribute to the generated
- class. This make the source more accessible than the outdated
- "verbose" option which prints to stdout but doesn't make the source
- string available.
+- Issue #15756: `subprocess.poll()` now properly handles `errno.ECHILD` to
+ return a returncode of 0 when the child has already exited or cannot be waited
+ on.
-- Issue #11371: Mark getopt error messages as localizable. Patch by Filip
- Gruszczyński.
+- Issue #15323: Improve failure message of `Mock.assert_called_once_with()`.
-- Issue #11333: Add __slots__ to collections ABCs.
+- Issue #16064: ``unittest -m`` claims executable is "python", not "python3".
-- Issue #11628: cmp_to_key generated class should use __slots__.
+- Issue #12376: Pass on parameters in `TextTestResult.__init__()` super call.
-- Issue #11666: let help() display named tuple attributes and methods
- that start with a leading underscore.
+- Issue #15222: Insert blank line after each message in mbox mailboxes.
-- Issue #11662: Make urllib and urllib2 ignore redirections if the
- scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).
+- Issue #16013: Fix `csv.Reader` parsing issue with ending quote characters.
+ Patch by Serhiy Storchaka.
-- Issue #5537: Fix time2isoz() and time2netscape() functions of
- httplib.cookiejar for expiration year greater than 2038 on 32-bit systems.
+- Issue #15421: Fix an OverflowError in `Calendar.itermonthdates()` after
+ `datetime.MAXYEAR`. Patch by Cédric Krier.
-- Issue #4391: Use proper gettext plural forms in optparse.
+- Issue #16112: platform.architecture does not correctly escape argument to
+ /usr/bin/file. Patch by David Benjamin.
-- Issue #11127: Raise a TypeError when trying to pickle a socket object.
+- Issue #15970: `xml.etree.ElementTree` now serializes correctly the empty HTML
+ elements 'meta' and 'param'.
-- Issue #11563: ``Connection: close`` header is sent by requests using URLOpener
- class which helps in closing of sockets after connection is over. Patch
- contributions by Jeff McNeil and Nadeem Vawda.
+- Issue #15842: The `SocketIO.{readable,writable,seekable}` methods now raise
+ ValueError when the file-like object is closed. Patch by Alessandro Moura.
-- Issue #11459: A ``bufsize`` value of 0 in subprocess.Popen() really creates
- unbuffered pipes, such that select() works properly on them.
+- Issue #15876: Fix a refleak in the `curses` module: window.encoding.
-- Issue #5421: Fix misleading error message when one of socket.sendto()'s
- arguments has the wrong type. Patch by Nikita Vetoshkin.
+- Issue #15881: Fix `atexit` hook in `multiprocessing`. Original patch by Chris
+ McDonough.
-- Issue #10812: Add some extra posix functions to the os module.
+- Issue #15841: The readable(), writable() and seekable() methods of
+ `io.BytesIO` and `io.StringIO` objects now raise ValueError when the object
+ has been closed. Patch by Alessandro Moura.
-- Issue #10979: unittest stdout buffering now works with class and module
- setup and teardown.
+- Issue #15447: Use `subprocess.DEVNULL` in webbrowser, instead of opening
+ `os.devnull` explicitly and leaving it open.
-- Issue #11243: fix the parameter querying methods of Message to work if
- the headers contain un-encoded non-ASCII data.
+- Issue #15509: `webbrowser.UnixBrowser` no longer passes empty arguments to
+ Popen when ``%action`` substitutions produce empty strings.
-- Issue #11401: fix handling of headers with no value; this fixes a regression
- relative to Python2 and the result is now the same as it was in Python2.
+- Issue #12776, issue #11839: Call `argparse` type function (specified by
+ add_argument) only once. Before, the type function was called twice in the
+ case where the default was specified and the argument was given as well. This
+ was especially problematic for the FileType type, as a default file would
+ always be opened, even if a file argument was specified on the command line.
-- Issue #9298: base64 bodies weren't being folded to line lengths less than 78,
- which was a regression relative to Python2. Unlike Python2, the last line
- of the folded body now ends with a carriage return.
+- Issue #15906: Fix a regression in argparse caused by the preceding change,
+ when ``action='append'``, ``type='str'`` and ``default=[]``.
-- Issue #11560: shutil.unpack_archive now correctly handles the format
- parameter. Patch by Evan Dandrea.
+- Issue #16113: Added sha3 module based on the Keccak reference implementation
+ 3.2. The `hashlib` module has four additional hash algorithms: `sha3_224`,
+ `sha3_256`, `sha3_384` and `sha3_512`. As part of the patch some common
+ code was moved from _hashopenssl.c to hashlib.h.
-- Issue #5870: Add `subprocess.DEVNULL` constant.
+- ctypes.call_commethod was removed, since its only usage was in the defunct
+ samples directory.
-- Issue #11133: fix two cases where inspect.getattr_static can trigger code
- execution. Patch by Andreas Stührk.
+- Issue #16692: Added TLSv1.1 and TLSv1.2 support for the ssl modules.
-- Issue #11569: use absolute path to the sysctl command in multiprocessing to
- ensure that it will be found regardless of the shell PATH. This ensures
- that multiprocessing.cpu_count works on default installs of MacOSX.
+- Issue #16832: add abc.get_cache_token() to expose cache validity checking
+ support in ABCMeta.
-- Issue #11501: disutils.archive_utils.make_zipfile no longer fails if zlib is
- not installed. Instead, the zipfile.ZIP_STORED compression is used to create
- the ZipFile. Patch by Natalia B. Bidart.
+IDLE
+----
-- Issue #11289: `smtp.SMTP` class is now a context manager so it can be used
- in a `with` statement. Contributed by Giampaolo Rodola.
+- Issue #18429: Format / Format Paragraph, now works when comment blocks
+ are selected. As with text blocks, this works best when the selection
+ only includes complete lines.
-- Issue #11554: Fixed support for Japanese codecs; previously the body output
- encoding was not done if euc-jp or shift-jis was specified as the charset.
+- Issue #18226: Add docstrings and unittests for FormatParagraph.py.
+ Original patches by Todd Rovito and Phil Webster.
-- Issue #11407: `TestCase.run` returns the result object used or created.
- Contributed by Janathan Hartley.
+- Issue #18279: Format - Strip trailing whitespace no longer marks a file as
+ changed when it has not been changed. This fix followed the addition of a
+ test file originally written by Phil Webster (the issue's main goal).
-- Issue #11500: Fixed a bug in the OS X proxy bypass code for fully qualified
- IP addresses in the proxy exception list.
+- Issue #7136: In the Idle File menu, "New Window" is renamed "New File".
+ Patch by Tal Einat, Roget Serwy, and Todd Rovito.
-- Issue #11491: dbm.error is no longer raised when dbm.open is called with
- the "n" as the flag argument and the file exists. The behavior matches
- the documentation and general logic.
+- Remove dead imports of imp.
-- Issue #1162477: Postel Principle adjustment to email date parsing: handle the
- fact that some non-compliant MUAs use '.' instead of ':' in time specs.
+- Issue #18196: Avoid displaying spurious SystemExit tracebacks.
-- Issue #11131: Fix sign of zero in decimal.Decimal plus and minus
- operations when the rounding mode is ROUND_FLOOR.
+- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition.
-- Issue #9935: Speed up pickling of instances of user-defined classes.
+- Issue #17511: Keep IDLE find dialog open after clicking "Find Next".
+ Original patch by Sarah K.
-- Issue #5622: Fix curses.wrapper to raise correct exception if curses
- initialization fails.
+- Issue #18055: Move IDLE off of imp and on to importlib.
-- Issue #11408: In threading.Lock.acquire(), only call gettimeofday() when
- really necessary. Patch by Charles-François Natali.
+- Issue #15392: Create a unittest framework for IDLE.
+ Initial patch by Rajagopalasarma Jayakrishnan.
+ See Lib/idlelib/idle_test/README.txt for how to run Idle tests.
-- Issue #11391: Writing to a mmap object created with
- ``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a
- TypeError. Patch by Charles-François Natali.
+- Issue #14146: Highlight source line while debugging on Windows.
-- Issue #9795: add context manager protocol support for nntplib.NNTP class.
+- Issue #17838: Allow sys.stdin to be reassigned.
-- Issue #11306: mailbox in certain cases adapts to an inability to open
- certain files in read-write mode. Previously it detected this by
- checking for EACCES, now it also checks for EROFS.
+- Issue #13495: Avoid loading the color delegator twice in IDLE.
-- Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors
- on accept(), send() and recv().
+- Issue #17798: Allow IDLE to edit new files when specified on command line.
-- Issue #11377: Deprecate platform.popen() and reimplement it with os.popen().
+- Issue #14735: Update IDLE docs to omit "Control-z on Windows".
-- Issue #8513: On UNIX, subprocess supports bytes command string.
+- Issue #17532: Always include Options menu for IDLE on OS X.
+ Patch by Guilherme Simões.
-- Issue #10866: Add socket.sethostname(). Initial patch by Ross Lagerwall.
+- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit().
-- Issue #11140: Lock.release() now raises a RuntimeError when attempting
- to release an unacquired lock, as claimed in the threading documentation.
- The _thread.error exception is now an alias of RuntimeError. Patch by
- Filip Gruszczyński. Patch for _dummy_thread by Aymeric Augustin.
+- Issue #17657: Show full Tk version in IDLE's about dialog.
+ Patch by Todd Rovito.
-- Issue #8594: ftplib now provides a source_address parameter to specify which
- (address, port) to bind to before connecting.
+- Issue #17613: Prevent traceback when removing syntax colorizer in IDLE.
-- Issue #11326: Add the missing connect_ex() implementation for SSL sockets,
- and make it work for non-blocking connects.
+- Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE.
-- Issue #11297: Add collections.ChainMap().
+- Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box.
-- Issue #10755: Add the posix.flistdir() function. Patch by Ross Lagerwall.
+- Issue #17625: In IDLE, close the replace dialog after it is used.
-- Issue #4761: Add the ``*at()`` family of functions (openat(), etc.) to the
- posix module. Patch by Ross Lagerwall.
+- Issue #14254: IDLE now handles readline correctly across shell restarts.
-- Issue #7322: Trying to read from a socket's file-like object after a timeout
- occurred now raises an error instead of silently losing data.
+- Issue #17614: IDLE no longer raises exception when quickly closing a file.
-- Issue #11291: poplib.POP no longer suppresses errors on quit().
+- Issue #6698: IDLE now opens just an editor window when configured to do so.
-- Issue #11177: asyncore's create_socket() arguments can now be omitted.
+- Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer
+ raises an exception.
-- Issue #6064: Add a ``daemon`` keyword argument to the threading.Thread
- and multiprocessing.Process constructors in order to override the
- default behaviour of inheriting the daemonic property from the current
- thread/process.
+- Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo.
-- Issue #10956: Buffered I/O classes retry reading or writing after a signal
- has arrived and the handler returned successfully.
+- Issue #17114: IDLE now uses non-strict config parser.
-- Issue #10784: New os.getpriority() and os.setpriority() functions.
+- Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase
+ interface and support all mandatory methods and properties.
-- Issue #11114: Fix catastrophic performance of tell() on text files (up
- to 1000x faster in some cases). It is still one to two order of magnitudes
- slower than binary tell().
+- Issue #5066: Update IDLE docs. Patch by Todd Rovito.
-- Issue #10882: Add os.sendfile function.
+- Issue #16829: IDLE printing no longer fails if there are spaces or other
+ special characters in the file path.
-- Issue #10868: Allow usage of the register method of an ABC as a class
- decorator.
+- Issue #16491: IDLE now prints chained exception tracebacks.
-- Issue #11224: Fixed a regression in tarfile that affected the file-like
- objects returned by TarFile.extractfile() regarding performance, memory
- consumption and failures with the stream interface.
+- Issue #16819: IDLE method completion now correctly works for bytes literals.
-- Issue #10924: Adding salt and Modular Crypt Format to crypt library.
- Moved old C wrapper to _crypt, and added a Python wrapper with
- enhanced salt generation and simpler API for password generation.
+- Issue #16504: IDLE now catches SyntaxErrors raised by tokenizer. Patch by
+ Roger Serwy.
-- Issue #11074: Make 'tokenize' so it can be reloaded.
+- Issue #16511: Use default IDLE width and height if config param is not valid.
+ Patch Serhiy Storchaka.
- - Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu
-- Issue #11085: Moved collections abstract base classes into a separate
- module called collections.abc, following the pattern used by importlib.abc.
- For backwards compatibility, the names are imported into the collections
- module.
++- Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu.
+ Patch by Todd Rovito.
-- Issue #4681: Allow mmap() to work on file sizes and offsets larger than
- 4GB, even on 32-bit builds. Initial patch by Ross Lagerwall, adapted for
- 32-bit Windows.
+- Issue #16123: IDLE - deprecate running without a subprocess.
+ Patch by Roger Serwy.
-- Issue #11169: compileall module uses repr() to format filenames and paths to
- escape surrogate characters and show spaces.
+Tests
+-----
-- Issue #11089: Fix performance issue limiting the use of ConfigParser()
- with large config files.
+- Issue #1666318: Add a test that shutil.copytree() retains directory
+ permissions. Patch by Catherine Devlin.
-- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers
- larger than 4GB. Patch by Nadeem Vawda.
+- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json
+ and make them discoverable by unittest. Patch by Zachary Ware.
-- Issue #11388: Added a clear() method to MutableSequence
+- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).
-- Issue #11174: Add argparse.MetavarTypeHelpFormatter, which uses type names
- for the names of optional and positional arguments in help messages.
+- Issue #18396: Fix spurious test failure in test_signal on Windows when
+ faulthandler is enabled (Patch by Jeremy Kloth)
-- Issue #9348: Raise an early error if argparse nargs and metavar don't match.
+- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess.
-- Issue #9026: Fix order of argparse sub-commands in help messages.
+- Issue #15415: Add new temp_dir() and change_cwd() context managers to
+ test.support, and refactor temp_cwd() to use them. Patch by Chris Jerdonek.
-- Issue #9347: Fix formatting for tuples in argparse type= error messages.
+- Issue #15494: test.support is now a package rather than a module (Initial
+ patch by Indra Talip)
-- Issue #12191: Added shutil.chown() to change user and/or group owner of a
- given path also specifying their names.
+- Issue #17944: test_zipfile now discoverable and uses subclassing to
+ generate tests for different compression types. Fixed a bug with skipping
+ some tests due to use of exhausted iterators.
-- Issue #13988: The _elementtree accelerator is used whenever available.
- Now xml.etree.cElementTree becomes a deprecated alias to ElementTree.
+- Issue #18266: test_largefile now works with unittest test discovery and
+ supports running only selected tests. Patch by Zachary Ware.
-Build
------
+- Issue #17767: test_locale now works with unittest test discovery.
+ Original patch by Zachary Ware.
-- Issue #6807: Run msisupport.mak earlier.
+- Issue #18375: Assume --randomize when --randseed is used for running the
+ testsuite.
-- Issue #10580: Minor grammar change in Windows installer.
+- Issue #11185: Fix test_wait4 under AIX. Patch by Sébastien Sablé.
-- Issue #13326: Clean __pycache__ directories correctly on OpenBSD.
+- Issue #18207: Fix test_ssl for some versions of OpenSSL that ignore seconds
+ in ASN1_TIME fields.
-- PEP 393: the configure option --with-wide-unicode is removed.
+- Issue #18094: test_uuid no longer reports skipped tests as passed.
-- Issue #12852: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008
- functions on OpenBSD (e.g. fdopendir).
+- Issue #17992: Add timeouts to asyncore and asynchat tests so that they won't
+ accidentally hang.
-- Issue #11863: Remove support for legacy systems deprecated in Python 3.2
- (following PEP 11). These systems are systems using Mach C Threads,
- SunOS lightweight processes, GNU pth threads and IRIX threads.
+- Issue #17833: Fix test_gdb failures seen on machines where debug symbols
+ for glibc are available (seen on PPC64 Linux).
-- Issue #8746: Correct faulty configure checks so that os.chflags() and
- os.lchflags() are once again built on systems that support these
- functions (BSD and OS X). Also add new stat file flags for OS X
- (UF_HIDDEN and UF_COMPRESSED).
+- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython.
+ Initial patch by Dino Viehland.
-- Issue #10645: Installing Python no longer creates a
- Python-X.Y.Z-pyX.Y.egg-info file in the lib-dynload directory.
+- Issue #11078: test___all__ now checks for duplicates in __all__.
+ Initial patch by R. David Murray.
-- Do not accidentally include the directory containing sqlite.h twice when
- building sqlite3.
+- Issue #17712: Fix test_gdb failures on Ubuntu 13.04.
-- Issue #11217: For 64-bit/32-bit Mac OS X universal framework builds,
- ensure "make install" creates symlinks in --prefix bin for the "-32"
- files in the framework bin directory like the installer does.
+- Issue #17835: Fix test_io when the default OS pipe buffer size is larger
+ than one million bytes.
-- Issue #11347: Use --no-as-needed when linking libpython3.so.
+- Issue #17065: Use process-unique key for winreg tests to avoid failures if
+ test is run multiple times in parallel (eg: on a buildbot host).
-- Issue #11411: Fix 'make DESTDIR=' with a relative destination.
+- Issue #12820: add tests for the xml.dom.minicompat module.
+ Patch by John Chandler and Phil Connell.
-- Issue #11268: Prevent Mac OS X Installer failure if Documentation
- package had previously been installed.
+- Issue #17691: test_univnewlines now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2.
+- Issue #17790: test_set now works with unittest test discovery.
+ Patch by Zachary Ware.
-IDLE
-----
+- Issue #17789: test_random now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #14409: IDLE now properly executes commands in the Shell window
- when it cannot read the normal config files on startup and
- has to use the built-in default key bindings.
- There was previously a bug in one of the defaults.
+- Issue #17779: test_osx_env now works with unittest test discovery.
+ Patch by Zachary Ware.
-- IDLE can be launched as python -m idlelib
+- Issue #17766: test_iterlen now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #3573: IDLE hangs when passing invalid command line args
- (directory(ies) instead of file(s)) (Patch by Guilherme Polo)
+- Issue #17690: test_time now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #14200: IDLE shell crash on printing non-BMP unicode character.
+- Issue #17692: test_sqlite now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #5219: Prevent event handler cascade in IDLE.
+- Issue #11995: test_pydoc doesn't import all sys.path modules anymore.
-- Issue #964437: Make IDLE help window non-modal.
- Patch by Guilherme Polo and Roger Serwy.
+- Issue #17448: test_sax now skips if there are no xml parsers available
+ instead of raising an ImportError.
-- Issue #13933: IDLE auto-complete did not work with some imported
- module, like hashlib. (Patch by Roger Serwy)
+- Issue #11420: make test suite pass with -B/DONTWRITEBYTECODE set.
+ Initial patch by Thomas Wouters.
-- Issue #13506: Add '' to path for IDLE Shell when started and restarted with Restart Shell.
- Original patches by Marco Scataglini and Roger Serwy.
+- Issue #10652: make tcl/tk tests run after __all__ test, patch by
+ Zachary Ware.
-- Issue #4625: If IDLE cannot write to its recent file or breakpoint files,
- display a message popup and continue rather than crash. Original patch by
- Roger Serwy.
+- Issue #11963: remove human verification from test_parser and test_subprocess.
-- Issue #8641: Update IDLE 3 syntax coloring to recognize b".." and not u"..".
- Patch by Tal Einat.
+- Issue #11732: add a new suppress_crash_popup() context manager to test.support
+ that disables crash popups on Windows and use it in test_faulthandler and
+ test_capi.
-- Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart.
- (Patch by Roger Serwy)
+- Issue #13898: test_ssl no longer prints a spurious stack trace on Ubuntu.
-- Issue #9871: Prevent IDLE 3 crash when given byte stings
- with invalid hex escape sequences, like b'\x0'.
- (Original patch by Claudiu Popa.)
+- Issue #17283: Share code between `__main__.py` and `regrtest.py` in
+ `Lib/test`.
-- Issue #12636: IDLE reads the coding cookie when executing a Python script.
+- Issue #17249: convert a test in test_capi to use unittest and reap threads.
-- Issue #12540: Prevent zombie IDLE processes on Windows due to changes
- in os.kill().
+- Issue #17107: Test client-side SNI support in urllib.request thanks to
+ the new server-side SNI support in the ssl module. Initial patch by
+ Daniel Black.
-- Issue #12590: IDLE editor window now always displays the first line
- when opening a long file. With Tk 8.5, the first line was hidden.
+- Issue #17041: Fix testing when Python is configured with the
+ --without-doc-strings.
-- Issue #11088: don't crash when using F5 to run a script in IDLE on MacOSX
- with Tk 8.5.
+- Issue #16923: Fix ResourceWarnings in test_ssl.
-- Issue #1028: Tk returns invalid Unicode null in %A: UnicodeDecodeError.
- With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused
- IDLE to exit. Converted to valid Unicode null in PythonCmd().
+- Issue #15539: Added regression tests for Tools/scripts/pindent.py.
-- Issue #11718: IDLE's open module dialog couldn't find the __init__.py
- file in a package.
+- Issue #17479: test_io now works with unittest test discovery.
+ Patch by Zachary Ware.
-Tools/Demos
------------
+- Issue #17066: test_robotparser now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches.
- Patch by Francisco Martín Brugué.
+- Issue #17334: test_index now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13930: 2to3 is now able to write its converted output files to another
- directory tree as well as copying unchanged files and altering the file
- suffix. See its new -o, -W and --add-suffix options. This makes it more
- useful in many automated code translation workflows.
+- Issue #17333: test_imaplib now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13628: python-gdb.py is now able to retrieve more frames in the Python
- traceback if Python is optimized.
+- Issue #17082: test_dbm* now work with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #11996: libpython (gdb), replace "py-bt" command by "py-bt-full" and
- add a smarter "py-bt" command printing a classic Python traceback.
+- Issue #17079: test_ctypes now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again.
+- Issue #17304: test_hash now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #10639: reindent.py no longer converts newlines and will raise
- an error if attempting to convert a file with mixed newlines.
- "--newline" option added to specify new line character.
+- Issue #17303: test_future* now work with unittest test discovery.
+ Patch by Zachary Ware.
-Extension Modules
------------------
+- Issue #17163: test_file now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in
- non-pydebug builds. Several extension modules now compile cleanly when
- assert()s are enabled in standard builds (-DDEBUG flag).
+- Issue #16925: test_configparser now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13840: The error message produced by ctypes.create_string_buffer
- when given a Unicode string has been fixed.
+- Issue #16918: test_codecs now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #9975: socket: Fix incorrect use of flowinfo and scope_id. Patch by
- Vilmos Nebehaj.
+- Issue #16919: test_crypt now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #7777: socket: Add Reliable Datagram Sockets (PF_RDS) support.
+- Issue #16910: test_bytes, test_unicode, and test_userstring now work with
+ unittest test discovery. Patch by Zachary Ware.
-- Issue #13159: FileIO and BZ2Compressor/BZ2Decompressor now use a linear-time
- buffer growth strategy instead of a quadratic-time one.
+- Issue #16905: test_warnings now works with unittest test discovery.
+ Initial patch by Berker Peksag.
-- Issue #10141: socket: Add SocketCAN (PF_CAN) support. Initial patch by
- Matthias Fuchs, updated by Tiago Gonçalves.
+- Issue #16898: test_bufio now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13070: Fix a crash when a TextIOWrapper caught in a reference cycle
- would be finalized after the reference to its underlying BufferedRWPair's
- writer got cleared by the GC.
+- Issue #16888: test_array now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #12881: ctypes: Fix segfault with large structure field names.
+- Issue #16896: test_asyncore now works with unittest test discovery.
+ Patch by Zachary Ware.
-- Issue #13058: ossaudiodev: fix a file descriptor leak on error. Patch by
- Thomas Jarosch.
+- Issue #16897: test_bisect now works with unittest test discovery.
+ Initial patch by Zachary Ware.
-- Issue #13013: ctypes: Fix a reference leak in PyCArrayType_from_ctype.
- Thanks to Suman Saha for finding the bug and providing a patch.
+- Issue #16852: test_genericpath, test_posixpath, test_ntpath, and test_macpath
+ now work with unittest test discovery. Patch by Zachary Ware.
-- Issue #13022: Fix: _multiprocessing.recvfd() doesn't check that
- file descriptor was actually received.
+- Issue #16748: test_heapq now works with unittest test discovery.
-- Issue #1172711: Add 'long long' support to the array module.
- Initial patch by Oren Tirosh and Hirokazu Yamamoto.
+- Issue #10646: Tests rearranged for os.samefile/samestat to check for not
+ just symlinks but also hard links.
-- Issue #12483: ctypes: Fix a crash when the destruction of a callback
- object triggers the garbage collector.
+- Issue #15302: Switch regrtest from using getopt to using argparse.
-- Issue #12950: Fix passing file descriptors in multiprocessing, under
- OpenIndiana/Illumos.
+- Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize
+ options.
-- Issue #12764: Fix a crash in ctypes when the name of a Structure field is not
- a string.
+- Issue #16702: test_urllib2_localnet tests now correctly ignores proxies for
+ localhost tests.
-- Issue #11241: subclasses of ctypes.Array can now be subclassed.
+- Issue #16664: Add regression tests for glob's behaviour concerning entries
+ starting with a ".". Patch by Sebastian Kreft.
-- Issue #9651: Fix a crash when ctypes.create_string_buffer(0) was passed to
- some functions like file.write().
+- Issue #13390: The ``-R`` option to regrtest now also checks for memory
+ allocation leaks, using :func:`sys.getallocatedblocks()`.
-- Issue #10309: Define _GNU_SOURCE so that mremap() gets the proper
- signature. Without this, architectures where sizeof void* != sizeof int are
- broken. Patch given by Hallvard B Furuseth.
+- Issue #16559: Add more tests for the json module, including some from the
+ official test suite at json.org. Patch by Serhiy Storchaka.
-- Issue #12051: Fix segfault in json.dumps() while encoding highly-nested
- objects using the C accelerations.
+- Issue #16661: Fix the `os.getgrouplist()` test by not assuming that it gives
+ the same output as :command:`id -G`.
-- Issue #12017: Fix segfault in json.loads() while decoding highly-nested
- objects using the C accelerations.
+- Issue #16115: Add some tests for the executable argument to
+ subprocess.Popen(). Initial patch by Kushal Das.
-- Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set
- to an instance of the class.
+- Issue #16126: PyErr_Format format mismatch in _testcapimodule.c.
+ Patch by Serhiy Storchaka.
-Tests
------
+- Issue #15304: Fix warning message when `os.chdir()` fails inside
+ `test.support.temp_cwd()`. Patch by Chris Jerdonek.
-- Issue #13125: Silence spurious test_lib2to3 output when in non-verbose mode.
- Patch by Mikhail Novikov.
+- Issue #15802: Fix test logic in `TestMaildir.test_create_tmp()`. Patch by
+ Serhiy Storchaka.
-- Issue #13447: Add a test file to host regression tests for bugs in the
- scripts found in the Tools directory.
+- Issue #15557: Added a test suite for the webbrowser module, thanks to Anton
+ Barkovsky.
-- Issue #10881: Fix test_site failure with OS X framework builds.
+- Issue #16698: Skip posix test_getgroups when built with OS X
+ deployment target prior to 10.6.
-- Issue #13901: Prevent test_distutils failures on OS X with --enable-shared.
+Build
+-----
-- Issue #13862: Fix spurious failure in test_zlib due to runtime/compile time
- minor versions not matching.
+- Issue #16067: Add description into MSI file to replace installer's
+ temporary name.
-- Issue #12804: Fix test_socket and test_urllib2net failures when running tests
- on a system without internet access.
+- Issue #18257: Fix readlink usage in python-config. Install the python
+ version again on Darwin.
-- Issue #13726: Fix the ambiguous -S flag in regrtest. It is -o/--slow for slow
- tests.
+- Issue #18481: Add C coverage reporting with gcov and lcov. A new make target
+ "coverage-report" creates an instrumented Python build, runs unit tests
+ and creates a HTML. The report can be updated with "make coverage-lcov".
-- Issue #11659: Fix ResourceWarning in test_subprocess introduced by #11459.
- Patch by Ben Hayden.
+- Issue #17845: Clarified the message printed when some module are not built.
-- Issue #11577: fix ResourceWarning triggered by improved binhex test coverage
+- Issue #18256: Compilation fix for recent AIX releases. Patch by
+ David Edelsohn.
-- Issue #11509: Significantly increase test coverage of fileinput.
- Patch by Denver Coneybeare at PyCon 2011 Sprints.
+- Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC
+ 4.8.
-- Issue #11689: Fix a variable scoping error in an sqlite3 test
+- Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1
+ on Windows.
-- Issue #13786: Remove unimplemented 'trace' long option from regrtest.py.
+- Issue #17591: Use lowercase filenames when including Windows header files.
+ Patch by Roumen Petrov.
-- Issue #13725: Fix regrtest to recognize the documented -d flag.
- Patch by Erno Tukia.
+- Issue #17550: Fix the --enable-profiling configure switch.
-- Issue #13304: Skip test case if user site-packages disabled (-s or
- PYTHONNOUSERSITE). (Patch by Carl Meyer)
+- Issue #17425: Build with openssl 1.0.1d on Windows.
-- Issue #5661: Add a test for ECONNRESET/EPIPE handling to test_asyncore. Patch
- by Xavier de Gaye.
+- Issue #16754: Fix the incorrect shared library extension on linux. Introduce
+ two makefile macros SHLIB_SUFFIX and EXT_SUFFIX. SO now has the value of
+ SHLIB_SUFFIX again (as in 2.x and 3.1). The SO macro is removed in 3.4.
-- Issue #13218: Fix test_ssl failures on Debian/Ubuntu.
+- Issue #5033: Fix building of the sqlite3 extension module when the
+ SQLite library version has "beta" in it. Patch by Andreas Pelme.
-- Re-enable lib2to3's test_parser.py tests, though with an expected failure
- (see issue #13125).
+- Issue #17228: Fix building without pymalloc.
-- Issue #12656: Add tests for IPv6 and Unix sockets to test_asyncore.
+- Issue #3718: Use AC_ARG_VAR to set MACHDEP in configure.ac.
-- Issue #6484: Add unit tests for mailcap module (patch by Gregory Nofi)
+- Issue #16235: Implement python-config as a shell script.
-- Issue #11651: Improve the Makefile test targets to run more of the test suite
- more quickly. The --multiprocess option is now enabled by default, reducing
- the amount of time needed to run the tests. "make test" and "make quicktest"
- now include some resource-intensive tests, but no longer run the test suite
- twice to check for bugs in .pyc generation. Tools/scripts/run_test.py provides
- an easy platform-independent way to run test suite with sensible defaults.
+- Issue #16769: Remove outdated Visual Studio projects.
-- Issue #12331: The test suite for the packaging module can now run from an
- installed Python.
+- Issue #17031: Fix running regen in cross builds.
-- Issue #12331: The test suite for lib2to3 can now run from an installed
- Python.
+- Issue #3754: fix typo in pthread AC_CACHE_VAL.
-- Issue #12626: In regrtest, allow to filter tests using a glob filter
- with the ``-m`` (or ``--match``) option. This works with all test cases
- using the unittest module. This is useful with long test suites
- such as test_io or test_subprocess.
+- Issue #15484: Fix _PYTHON_PROJECT_BASE for srcdir != builddir builds;
+ use _PYTHON_PROJECT_BASE in distutils/sysconfig.py.
-- Issue #12624: It is now possible to fail after the first failure when
- running in verbose mode (``-v`` or ``-W``), by using the ``--failfast``
- (or ``-G``) option to regrtest. This is useful with long test suites
- such as test_io or test_subprocess.
+- Drop support for Windows 2000 (changeset e52df05b496a).
-- Issue #12587: Correct faulty test file and reference in test_tokenize.
- (Patch by Robert Xiao)
+- Issue #17029: Let h2py search the multiarch system include directory.
-- Issue #12573: Add resource checks for dangling Thread and Process objects.
+- Issue #16953: Fix socket module compilation on platforms with
+ HAVE_BROKEN_POLL. Patch by Jeffrey Armstrong.
-- Issue #12549: Correct test_platform to not fail when OS X returns 'x86_64'
- as the processor type on some Mac systems.
+- Issue #16320: Remove redundant Makefile dependencies for strings and bytes.
-- Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary
- failure in name resolution.
+- Cross compiling needs host and build settings. configure no longer
+ creates a broken PYTHON_FOR_BUILD variable when --build is missing.
-- Issue #11812: Solve transient socket failure to connect to 'localhost'
- in test_telnetlib.py.
+- Fix cross compiling issue in setup.py, ensure that lib_dirs and inc_dirs are
+ defined in cross compiling mode, too.
-- Solved a potential deadlock in test_telnetlib.py. Related to issue #11812.
+- Issue #16836: Enable IPv6 support even if IPv6 is disabled on the build host.
-- Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and
- an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder
- Web site.
+- Issue #16593: Have BSD 'make -s' do the right thing, thanks to Daniel Shahaf
-- Avoid failing in test_urllibnet.test_bad_address when some overzealous
- DNS service (e.g. OpenDNS) resolves a non-existent domain name. The test
- is now skipped instead.
+- Issue #16262: fix out-of-src-tree builds, if mercurial is not installed.
-- Issue #12440: When testing whether some bits in SSLContext.options can be
- reset, check the version of the OpenSSL headers Python was compiled against,
- rather than the runtime version of the OpenSSL library.
+- Issue #15298: ensure _sysconfigdata is generated in build directory, not
+ source directory.
-- Issue #11512: Add a test suite for the cgitb module. Patch by Robbie Clemons.
+- Issue #15833: Fix a regression in 3.3 that resulted in exceptions being
+ raised if importlib failed to write byte-compiled files. This affected
+ attempts to build Python out-of-tree from a read-only source directory.
-- Issue #12497: Install test/data to prevent failures of the various codecmaps
- tests.
+- Issue #15923: Fix a mistake in ``asdl_c.py`` that resulted in a TypeError
+ after 2801bf875a24 (see #15801).
-- Issue #12496: Install test/capath directory to prevent test_connect_capath
- testcase failure in test_ssl.
+- Issue #16135: Remove OS/2 support.
-- Issue #12469: Run wakeup and pending signal tests in a subprocess to run the
- test in a fresh process with only one thread and to not change signal
- handling of the parent process.
+- Issue #15819: Make sure we can build Python out-of-tree from a read-only
+ source directory. (Somewhat related to issue #9860.)
-- Issue #8716: Avoid crashes caused by Aqua Tk on OSX when attempting to run
- test_tk or test_ttk_guionly under a username that is not currently logged
- in to the console windowserver (as may be the case under buildbot or ssh).
+- Issue #15587: Enable Tk high-resolution text rendering on Macs with
+ Retina displays. Applies to Tkinter apps, such as IDLE, on OS X
+ framework builds linked with Cocoa Tk 8.5.
-- Issue #12407: Explicitly skip test_capi.EmbeddingTest under Windows.
+- Issue #17161: make install now also installs a python3 man page.
-- Issue #12400: regrtest -W doesn't rerun the tests twice anymore, but captures
- the output and displays it on failure instead. regrtest -v doesn't print the
- error twice anymore if there is only one error.
+C-API
+-----
-- Issue #12141: Install copies of template C module file so that
- test_build_ext of test_distutils and test_command_build_ext of
- test_packaging are no longer silently skipped when
- run outside of a build directory.
+- Issue #18351: Fix various issues in a function in importlib provided to help
+ PyImport_ExecCodeModuleWithPathnames() (and thus by extension
+ PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()).
-- Issue #8746: Add additional tests for os.chflags() and os.lchflags().
- Patch by Garrett Cooper.
+- Issue #9369: The types of `char*` arguments of PyObject_CallFunction() and
+ PyObject_CallMethod() now changed to `const char*`. Based on patches by
+ Jörg Müller and Lars Buitinck.
-- Issue #10736: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9
- 2.8+ on Mac OS X. (Patch by Ronald Oussoren)
+- Issue #17206: Py_CLEAR(), Py_DECREF(), Py_XINCREF() and Py_XDECREF() now
+ expand their arguments once instead of multiple times. Patch written by Illia
+ Polosukhin.
-- Issue #12057: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2,
- iso2022_kr).
+- Issue #17522: Add the PyGILState_Check() API.
-- Issue #12096: Fix a race condition in test_threading.test_waitfor(). Patch
- written by Charles-François Natali.
+- Issue #17327: Add PyDict_SetDefault.
-- Issue #11614: import __hello__ prints "Hello World!". Patch written by
- Andreas Stührk.
+- Issue #16881: Fix Py_ARRAY_LENGTH macro for GCC < 3.1.
-- Issue #5723: Improve json tests to be executed with and without accelerations.
+- Issue #16505: Remove unused Py_TPFLAGS_INT_SUBCLASS.
-- Issue #12041: Make test_wait3 more robust.
+- Issue #16086: PyTypeObject.tp_flags and PyType_Spec.flags are now unsigned
+ (unsigned long and unsigned int) to avoid an undefined behaviour with
+ Py_TPFLAGS_TYPE_SUBCLASS ((1 << 31). PyType_GetFlags() result type is
+ now unsigned too (unsigned long, instead of long).
-- Issue #11873: Change regex in test_compileall to fix occasional failures when
- when the randomly generated temporary path happened to match the regex.
+- Issue #16166: Add PY_LITTLE_ENDIAN and PY_BIG_ENDIAN macros and unified
+ endianness detection and handling.
-- Issue #11958: Fix FTP tests for IPv6, bind to "::1" instead of "localhost".
- Patch written by Charles-Francois Natali.
+Documentation
+-------------
-- Issue #8407, #11859: Fix tests of test_io using threads and an alarm: use
- pthread_sigmask() to ensure that the SIGALRM signal is received by the main
- thread.
+- Issue #23006: Improve the documentation and indexing of dict.__missing__.
+ Add an entry in the language datamodel special methods section.
+ Revise and index its discussion in the stdtypes mapping/dict section.
-- Issue #11811: Factor out detection of IPv6 support on the current host
- and make it available as ``test.support.IPV6_ENABLED``. Patch by
- Charles-François Natali.
+- Issue #17701: Improving strftime documentation.
-- Issue #10914: Add a minimal embedding test to test_capi.
+- Issue #18440: Clarify that `hash()` can truncate the value returned from an
+ object's custom `__hash__()` method.
-- Issue #11223: Skip test_lock_acquire_interruption() and
- test_rlock_acquire_interruption() of test_threadsignals if a thread lock is
- implemented using a POSIX mutex and a POSIX condition variable. A POSIX
- condition variable cannot be interrupted by a signal (e.g. on Linux, the
- futex system call is restarted).
+- Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs.
-- Issue #11790: Fix sporadic failures in test_multiprocessing.WithProcessesTestCondition.
+- Issue #14097: improve the "introduction" page of the tutorial.
-- Fix possible "file already exists" error when running the tests in parallel.
+- Issue #17977: The documentation for the cadefault argument's default value
+ in urllib.request.urlopen() is fixed to match the code.
-- Issue #11719: Fix message about unexpected test_msilib skip on non-Windows
- platforms. Patch by Nadeem Vawda.
+- Issue #6696: add documentation for the Profile objects, and improve
+ profile/cProfile docs. Patch by Tom Pinckney.
-- Issue #11727: Add a --timeout option to regrtest: if a test takes more than
- TIMEOUT seconds, dumps the traceback of all threads and exits.
+- Issue #15940: Specify effect of locale on time functions.
-- Issue #11653: fix -W with -j in regrtest.
+- Issue #17538: Document XML vulnerabilties
-- The email test suite now lives in the Lib/test/test_email package. The test
- harness code has also been modernized to allow use of new unittest features.
+- Issue #16642: sched.scheduler timefunc initial default is time.monotonic.
+ Patch by Ramchandra Apte
-- regrtest now discovers test packages as well as test modules.
+- Issue #17047: remove doubled words in docs and docstrings
+ reported by Serhiy Storchaka and Matthew Barnett.
-- Issue #11577: improve test coverage of binhex.py. Patch by Arkady Koplyarov.
+- Issue #15465: Document the versioning macros in the C API docs rather than
+ the standard library docs. Patch by Kushal Das.
-- New test_crashers added to exercise the scripts in the Lib/test/crashers
- directory and confirm they fail as expected
+- Issue #16406: Combine the pages for uploading and registering to PyPI.
-- Issue #11578: added test for the timeit module. Patch by Michael Henry.
+- Issue #16403: Document how distutils uses the maintainer field in
+ PKG-INFO. Patch by Jyrki Pulliainen.
-- Issue #11503: improve test coverage of posixpath.py. Patch by Evan Dandrea.
+- Issue #16695: Document how glob handles filenames starting with a
+ dot. Initial patch by Jyrki Pulliainen.
-- Issue #11505: improves test coverage of string.py, increases granularity of
- string.Formatter tests. Initial patch by Alicia Arlen.
+- Issue #8890: Stop advertising an insecure practice by replacing uses
+ of the /tmp directory with better alternatives in the documentation.
+ Patch by Geoff Wilson.
-- Issue #11548: Improve test coverage of the shutil module. Patch by
- Evan Dandrea.
+- Issue #17203: add long option names to unittest discovery docs.
-- Issue #11554: Reactivated test_email_codecs.
+- Issue #13094: add "Why do lambdas defined in a loop with different values
+ all return the same result?" programming FAQ.
-- Issue #11505: improves test coverage of string.py. Patch by Alicia
- Arlen
+- Issue #14901: Update portions of the Windows FAQ.
+ Patch by Ashish Nitin Patil.
-- Issue #11490: test_subprocess.test_leaking_fds_on_error no longer gives a
- false positive if the last directory in the path is inaccessible.
+- Issue #16267: Better document the 3.3+ approach to combining
+ @abstractmethod with @staticmethod, @classmethod and @property
-- Issue #11223: Fix test_threadsignals to fail, not hang, when the
- non-semaphore implementation of locks is used under POSIX.
+- Issue #15209: Clarify exception chaining description in exceptions module
+ documentation
-- Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by
- Pierre Quentel.
+- Issue #15990: Improve argument/parameter documentation.
-- Issue #9931: Fix hangs in GUI tests under Windows in certain conditions.
- Patch by Hirokazu Yamamoto.
+- Issue #16209: Move the documentation for the str built-in function to a new
+ str class entry in the "Text Sequence Type" section.
-- Issue #10512: Properly close sockets under test.test_cgi.
+- Issue #13538: Improve str() and object.__str__() documentation.
-- Issue #10992: Make tests pass under coverage.
+- Issue #16489: Make it clearer that importlib.find_loader() needs parent
+ packages to be explicitly imported.
-- Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due
- to open door files.
+- Issue #16400: Update the description of which versions of a given package
+ PyPI displays.
-- Issue #10990: Prevent tests from clobbering a set trace function.
+- Issue #15677: Document that zlib and gzip accept a compression level of 0 to
+ mean 'no compression'. Patch by Brian Brazil.
-C-API
------
+- Issue #16197: Update winreg docstrings and documentation to match code.
+ Patch by Zachary Ware.
-- Issue #13452: PyUnicode_EncodeDecimal() doesn't support error handlers
- different than "strict" anymore. The caller was unable to compute the
- size of the output buffer: it depends on the error handler.
+- Issue #8040: added a version switcher to the documentation. Patch by
+ Yury Selivanov.
-- Issue #13560: Add PyUnicode_DecodeLocale(), PyUnicode_DecodeLocaleAndSize()
- and PyUnicode_EncodeLocale() functions to the C API to decode/encode from/to
- the current locale encoding.
+- Issue #16241: Document -X faulthandler command line option.
+ Patch by Marek Šuppa.
-- Issue #10831: PyUnicode_FromFormat() supports %li, %lli and %zi formats.
+- Additional comments and some style changes in the concurrent.futures URL
+ retrieval example
-- Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from
- UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode).
- Patch written by Ray Allen.
+- Issue #16115: Improve subprocess.Popen() documentation around args, shell,
+ and executable arguments.
-- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on
- narrow build.
+- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with
+ great native-speaker help from R. David Murray.
-- Add PyObject_GenericGetDict and PyObject_GeneriSetDict. They are generic
- implementations for the getter and setter of a ``__dict__`` descriptor of C
- types.
+- Issue #15533: Clarify docs and add tests for `subprocess.Popen()`'s cwd
+ argument.
-- Issue #13727: Add 3 macros to access PyDateTime_Delta members:
- PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS,
- PyDateTime_DELTA_GET_MICROSECONDS.
+- Issue #15979: Improve timeit documentation.
-- Issue #10542: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE,
- Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE,
- Py_UNICODE_JOIN_SURROGATES.
+- Issue #16036: Improve documentation of built-in `int()`'s signature and
+ arguments.
-- Issue #12724: Add Py_RETURN_NOTIMPLEMENTED macro for returning NotImplemented.
+- Issue #15935: Clarification of `argparse` docs, re: add_argument() type and
+ default arguments. Patch contributed by Chris Jerdonek.
-- PY_PATCHLEVEL_REVISION has been removed, since it's meaningless with
- Mercurial.
+- Issue #11964: Document a change in v3.2 to the behavior of the indent
+ parameter of json encoding operations.
-- Issue #12173: The first argument of PyImport_ImportModuleLevel is now `const
- char *` instead of `char *`.
+- Issue #15116: Remove references to appscript as it is no longer being
+ supported.
-- Issue #12380: PyArg_ParseTuple now accepts a bytearray for the 'c' format.
+Tools/Demos
+-----------
-Documentation
--------------
+- Issue #18817: Fix a resource warning in Lib/aifc.py demo. Patch by
+ Vajrasky Kok.
-- Issue #23006: Improve the documentation and indexing of dict.__missing__.
- Add an entry in the language datamodel special methods section.
- Revise and index its discussion in the stdtypes mapping/dict section.
+- Issue #18439: Make patchcheck work on Windows for ACKS, NEWS.
-- Issue #13989: Document that GzipFile does not support text mode, and give a
- more helpful error message when opened with an invalid mode string.
+- Issue #18448: Fix a typo in Tools/demo/eiffel.py.
-- Issue #13921: Undocument and clean up sqlite3.OptimizedUnicode,
- which is obsolete in Python 3.x. It's now aliased to str for
- backwards compatibility.
+- Issue #18457: Fixed saving of formulas and complex numbers in
+ Tools/demo/ss1.py.
-- Issue #12102: Document that buffered files must be flushed before being used
- with mmap. Patch by Steffen Daode Nurpmeso.
+- Issue #18449: Make Tools/demo/ss1.py work again on Python 3. Patch by
+ Févry Thibault.
-- Issue #8982: Improve the documentation for the argparse Namespace object.
+- Issue #12990: The "Python Launcher" on OSX could not launch python scripts
+ that have paths that include wide characters.
-- Issue #9343: Document that argparse parent parsers must be configured before
- their children.
+- Issue #15239: Make mkstringprep.py work again on Python 3.
-- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with
- great native-speaker help from R. David Murray.
+- Issue #17028: Allowed Python arguments to be supplied to the Windows
+ launcher.
-- Issues #13491 and #13995: Fix many errors in sqlite3 documentation.
- Initial patch for #13491 by Johannes Vogel.
+- Issue #17156: pygettext.py now detects the encoding of source files and
+ correctly writes and escapes non-ascii characters.
-- Issue #13402: Document absoluteness of sys.executable.
+- Issue #15539: Fix a number of bugs in Tools/scripts/pindent.py. Now
+ pindent.py works with a "with" statement. pindent.py no longer produces
+ improper indentation. pindent.py now works with continued lines broken after
+ "class" or "def" keywords and with continuations at the start of line.
-- Issue #13883: PYTHONCASEOK also works on OS X.
+- Issue #11797: Add a 2to3 fixer that maps reload() to imp.reload().
-- Issue #9021: Add an introduction to the copy module documentation.
+- Issue #10966: Remove the concept of unexpected skipped tests.
-- Issue #6005: Examples in the socket library documentation use sendall, where
- relevant, instead send method.
+- Issue #9893: Removed the Misc/Vim directory.
-- Issue #12798: Updated the mimetypes documentation.
+- Removed the Misc/TextMate directory.
-- Issue #12949: Document the kwonlyargcount argument for the PyCode_New
- C API function.
+- Issue #16245: Add the Tools/scripts/parse_html5_entities.py script to parse
+ the list of HTML5 entities and update the html.entities.html5 dictionary.
-- Issue #13513: Fix io.IOBase documentation to correctly link to the
- io.IOBase.readline method instead of the readline module.
+- Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka.
-- Issue #13237: Reorganise subprocess documentation to emphasise convenience
- functions and the most commonly needed arguments to Popen.
+- Issue #16549: Make json.tool work again on Python 3 and add tests.
+ Initial patch by Berker Peksag and Serhiy Storchaka.
- - Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py
-- Issue #13141: Demonstrate recommended style for socketserver examples.
++- Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py.
+ Patch by Serhiy Storchaka.
-- Issue #11818: Fix tempfile examples for Python 3.
+Windows
+-------
+- Issue #18569: The installer now adds .py to the PATHEXT variable when extensions
+ are registered. Patch by Paul Moore.
**(For information about older versions, consult the HISTORY file.)**
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