3.6.1rc1 - Cpython — ContextQMD

.. bpo: 28893 .. date: 9892 .. nonce: WTKnpj .. release date: 2017-03-04 .. section: Core and Builtins

Set correct cause for errors about invalid awaitables returned from aiter and anext.

.. bpo: 29683 .. date: 9891 .. nonce: G5iS-P .. section: Core and Builtins

Fixes to memory allocation in _PyCode_SetExtra. Patch by Brian Coleman.

.. bpo: 29684 .. date: 9890 .. nonce: wTgEoh .. section: Core and Builtins

Fix minor regression of PyEval_CallObjectWithKeywords. It should raise TypeError when kwargs is not a dict. But it might cause segv when args=NULL and kwargs is not a dict.

.. bpo: 28598 .. date: 9889 .. nonce: QxbzQn .. section: Core and Builtins

Support rmod for subclasses of str being called before str.mod. Patch by Martijn Pieters.

.. bpo: 29607 .. date: 9888 .. nonce: 7NvBA1 .. section: Core and Builtins

Fix stack_effect computation for CALL_FUNCTION_EX. Patch by Matthieu Dartiailh.

.. bpo: 29602 .. date: 9887 .. nonce: qyyskC .. section: Core and Builtins

Fix incorrect handling of signed zeros in complex constructor for complex subclasses and for inputs having a complex method. Patch by Serhiy Storchaka.

.. bpo: 29347 .. date: 9886 .. nonce: 1RPPGN .. section: Core and Builtins

Fixed possibly dereferencing undefined pointers when creating weakref objects.

.. bpo: 29438 .. date: 9885 .. nonce: IKxD6I .. section: Core and Builtins

Fixed use-after-free problem in key sharing dict.

.. bpo: 29319 .. date: 9884 .. nonce: KLDUZf .. section: Core and Builtins

Prevent RunMainFromImporter overwriting sys.path[0].

.. bpo: 29337 .. date: 9883 .. nonce: bjX8AE .. section: Core and Builtins

Fixed possible BytesWarning when compare the code objects. Warnings could be emitted at compile time.

.. bpo: 29327 .. date: 9882 .. nonce: XXQarW .. section: Core and Builtins

Fixed a crash when pass the iterable keyword argument to sorted().

.. bpo: 29034 .. date: 9881 .. nonce: 7-uEDT .. section: Core and Builtins

Fix memory leak and use-after-free in os module (path_converter).

.. bpo: 29159 .. date: 9880 .. nonce: gEn_kP .. section: Core and Builtins

Fix regression in bytes(x) when x.index() raises Exception.

.. bpo: 28932 .. date: 9879 .. nonce: QnLx8A .. section: Core and Builtins

Do not include <sys/random.h> if it does not exist.

.. bpo: 25677 .. date: 9878 .. nonce: RWhZrb .. section: Core and Builtins

Correct the positioning of the syntax error caret for indented blocks. Based on patch by Michael Layzell.

.. bpo: 29000 .. date: 9877 .. nonce: K6wQ-3 .. section: Core and Builtins

Fixed bytes formatting of octals with zero padding in alternate form.

.. bpo: 26919 .. date: 9876 .. nonce: Cm7MSa .. section: Core and Builtins

On Android, operating system data is now always encoded/decoded to/from UTF-8, instead of the locale encoding to avoid inconsistencies with os.fsencode() and os.fsdecode() which are already using UTF-8.

.. bpo: 28991 .. date: 9875 .. nonce: lGA0FK .. section: Core and Builtins

functools.lru_cache() was susceptible to an obscure reentrancy bug triggerable by a monkey-patched len() function.

.. bpo: 28739 .. date: 9874 .. nonce: w1fvhk .. section: Core and Builtins

f-string expressions are no longer accepted as docstrings and by ast.literal_eval() even if they do not include expressions.

.. bpo: 28512 .. date: 9873 .. nonce: i-pv6d .. section: Core and Builtins

Fixed setting the offset attribute of SyntaxError by PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject().

.. bpo: 28918 .. date: 9872 .. nonce: SFVuPz .. section: Core and Builtins

Fix the cross compilation of xxlimited when Python has been built with Py_DEBUG defined.

.. bpo: 28731 .. date: 9871 .. nonce: oNF59u .. section: Core and Builtins

Optimize _PyDict_NewPresized() to create correct size dict. Improve speed of dict literal with constant keys up to 30%.

.. bpo: 29169 .. date: 9870 .. nonce: 8ypApm .. section: Library

Update zlib to 1.2.11.

.. bpo: 29623 .. date: 9869 .. nonce: D3-NP2 .. section: Library

Allow use of path-like object as a single argument in ConfigParser.read(). Patch by David Ellis.

.. bpo: 28963 .. date: 9868 .. nonce: tPl8dq .. section: Library

Fix out of bound iteration in asyncio.Future.remove_done_callback implemented in C.

.. bpo: 29704 .. date: 9867 .. nonce: r-kWqv .. section: Library

asyncio.subprocess.SubprocessStreamProtocol no longer closes before all pipes are closed.

.. bpo: 29271 .. date: 9866 .. nonce: y8Vj2v .. section: Library

Fix Task.current_task and Task.all_tasks implemented in C to accept None argument as their pure Python implementation.

.. bpo: 29703 .. date: 9865 .. nonce: ZdsPCR .. section: Library

Fix asyncio to support instantiation of new event loops in child processes.

.. bpo: 29376 .. date: 9864 .. nonce: rrJhJy .. section: Library

Fix assertion error in threading._DummyThread.is_alive().

.. bpo: 28624 .. date: 9863 .. nonce: 43TJib .. section: Library

Add a test that checks that cwd parameter of Popen() accepts PathLike objects. Patch by Sayan Chowdhury.

.. bpo: 28518 .. date: 9862 .. nonce: o-Q2Nw .. section: Library

Start a transaction implicitly before a DML statement. Patch by Aviv Palivoda.

.. bpo: 29532 .. date: 9861 .. nonce: YCwVQn .. section: Library

Altering a kwarg dictionary passed to functools.partial() no longer affects a partial object after creation.

.. bpo: 29110 .. date: 9860 .. nonce: wmE-_T .. section: Library

Fix file object leak in aifc.open() when file is given as a filesystem path and is not in valid AIFF format. Patch by Anthony Zhang.

.. bpo: 28556 .. date: 9859 .. nonce: p6967e .. section: Library

Various updates to typing module: typing.Counter, typing.ChainMap, improved ABC caching, etc. Original PRs by Jelle Zijlstra, Ivan Levkivskyi, Manuel Krebber, and Łukasz Langa.

.. bpo: 29100 .. date: 9858 .. nonce: LAAERS .. section: Library

Fix datetime.fromtimestamp() regression introduced in Python 3.6.0: check minimum and maximum years.

.. bpo: 29519 .. date: 9857 .. nonce: oGGgZ4 .. section: Library

Fix weakref spewing exceptions during interpreter shutdown when used with a rare combination of multiprocessing and custom codecs.

.. bpo: 29416 .. date: 9856 .. nonce: KJGyI_ .. section: Library

Prevent infinite loop in pathlib.Path.mkdir

.. bpo: 29444 .. date: 9855 .. nonce: cEwgmk .. section: Library

Fixed out-of-bounds buffer access in the group() method of the match object. Based on patch by WGH.

.. bpo: 29335 .. date: 9854 .. nonce: _KC7IK .. section: Library

Fix subprocess.Popen.wait() when the child process has exited to a stopped instead of terminated state (ex: when under ptrace).

.. bpo: 29290 .. date: 9853 .. nonce: XBqptF .. section: Library

Fix a regression in argparse that help messages would wrap at non-breaking spaces.

.. bpo: 28735 .. date: 9852 .. nonce: admHLO .. section: Library

Fixed the comparison of mock.MagickMock with mock.ANY.

.. bpo: 29316 .. date: 9851 .. nonce: OeOQw5 .. section: Library

Restore the provisional status of typing module, add corresponding note to documentation. Patch by Ivan L.

.. bpo: 29219 .. date: 9850 .. nonce: kxui7t .. section: Library

Fixed infinite recursion in the repr of uninitialized ctypes.CDLL instances.

.. bpo: 29011 .. date: 9849 .. nonce: MI5f2R .. section: Library

Fix an important omission by adding Deque to the typing module.

.. bpo: 28969 .. date: 9848 .. nonce: j3HJYO .. section: Library

Fixed race condition in C implementation of functools.lru_cache. KeyError could be raised when cached function with full cache was simultaneously called from different threads with the same uncached arguments.

.. bpo: 29142 .. date: 9847 .. nonce: xo6kAv .. section: Library

In urllib.request, suffixes in no_proxy environment variable with leading dots could match related hostnames again (e.g. .b.c matches a.b.c). Patch by Milan Oberkirch.

.. bpo: 28961 .. date: 9846 .. nonce: Rt93vg .. section: Library

Fix unittest.mock._Call helper: don't ignore the name parameter anymore. Patch written by Jiajun Huang.

.. bpo: 29203 .. date: 9845 .. nonce: kN5S6v .. section: Library

functools.lru_cache() now respects :pep:468 and preserves the order of keyword arguments. f(a=1, b=2) is now cached separately from f(b=2, a=1) since both calls could potentially give different results.

.. bpo: 15812 .. date: 9844 .. nonce: R1U-Ec .. section: Library

inspect.getframeinfo() now correctly shows the first line of a context. Patch by Sam Breese.

.. bpo: 29094 .. date: 9843 .. nonce: 460ZQo .. section: Library

Offsets in a ZIP file created with extern file object and modes "w" and "x" now are relative to the start of the file.

.. bpo: 29085 .. date: 9842 .. nonce: bm3gkx .. section: Library

Allow random.Random.seed() to use high quality OS randomness rather than the pid and time.

.. bpo: 29061 .. date: 9841 .. nonce: YKq0Ba .. section: Library

Fixed bug in secrets.randbelow() which would hang when given a negative input. Patch by Brendan Donegan.

.. bpo: 29079 .. date: 9840 .. nonce: g4YLix .. section: Library

Prevent infinite loop in pathlib.resolve() on Windows

.. bpo: 13051 .. date: 9839 .. nonce: YzC1Te .. section: Library

Fixed recursion errors in large or resized curses.textpad.Textbox. Based on patch by Tycho Andersen.

.. bpo: 29119 .. date: 9838 .. nonce: Ov69fr .. section: Library

Fix weakrefs in the pure python version of collections.OrderedDict move_to_end() method. Contributed by Andra Bogildea.

.. bpo: 9770 .. date: 9837 .. nonce: WJJnwP .. section: Library

curses.ascii predicates now work correctly with negative integers.

.. bpo: 28427 .. date: 9836 .. nonce: vUd-va .. section: Library

old keys should not remove new values from WeakValueDictionary when collecting from another thread.

.. bpo: 28923 .. date: 9835 .. nonce: naVULD .. section: Library

Remove editor artifacts from Tix.py.

.. bpo: 29055 .. date: 9834 .. nonce: -r_9jc .. section: Library

Neaten-up empty population error on random.choice() by suppressing the upstream exception.

.. bpo: 28871 .. date: 9833 .. nonce: cPMXCJ .. section: Library

Fixed a crash when deallocate deep ElementTree.

.. bpo: 19542 .. date: 9832 .. nonce: 5tCkaK .. section: Library

Fix bugs in WeakValueDictionary.setdefault() and WeakValueDictionary.pop() when a GC collection happens in another thread.

.. bpo: 20191 .. date: 9831 .. nonce: Q7uZCS .. section: Library

Fixed a crash in resource.prlimit() when passing a sequence that doesn't own its elements as limits.

.. bpo: 28779 .. date: 9830 .. nonce: t-mjED .. section: Library

multiprocessing.set_forkserver_preload() would crash the forkserver process if a preloaded module instantiated some multiprocessing objects such as locks.

.. bpo: 28847 .. date: 9829 .. nonce: J7d3nG .. section: Library

dbm.dumb now supports reading read-only files and no longer writes the index file when it is not changed.

.. bpo: 26937 .. date: 9828 .. nonce: c9kgiA .. section: Library

The chown() method of the tarfile.TarFile class does not fail now when the grp module cannot be imported, as for example on Android platforms.

.. bpo: 29071 .. date: 9827 .. nonce: FCOpJn .. section: IDLE

IDLE colors f-string prefixes (but not invalid ur prefixes).

.. bpo: 28572 .. date: 9826 .. nonce: 1_duKY .. section: IDLE

Add 10% to coverage of IDLE's test_configdialog. Update and augment description of the configuration system.

.. bpo: 29579 .. date: 9825 .. nonce: Ih-G2Q .. section: Windows

Removes readme.txt from the installer

.. bpo: 29326 .. date: 9824 .. nonce: 4qDQzs .. section: Windows

Ignores blank lines in ._pth files (Patch by Alexey Izbyshev)

.. bpo: 28164 .. date: 9823 .. nonce: h4CFX8 .. section: Windows

Correctly handle special console filenames (patch by Eryk Sun)

.. bpo: 29409 .. date: 9822 .. nonce: bhvrJ2 .. section: Windows

Implement :pep:529 for io.FileIO (Patch by Eryk Sun)

.. bpo: 29392 .. date: 9821 .. nonce: OtqS5t .. section: Windows

Prevent crash when passing invalid arguments into msvcrt module.

.. bpo: 25778 .. date: 9820 .. nonce: 8uKJ82 .. section: Windows

winreg does not truncate string correctly (Patch by Eryk Sun)

.. bpo: 28896 .. date: 9819 .. nonce: VMi9w0 .. section: Windows

Deprecate WindowsRegistryFinder and disable it by default.

.. bpo: 27867 .. date: 9818 .. nonce: UC5ohc .. section: C API

Function PySlice_GetIndicesEx() is replaced with a macro if Py_LIMITED_API is not set or set to the value between 0x03050400 and 0x03060000 (not including) or 0x03060100 or higher.

.. bpo: 29083 .. date: 9817 .. nonce: tGTjr_ .. section: C API

Fixed the declaration of some public API functions. PyArg_VaParse() and PyArg_VaParseTupleAndKeywords() were not available in limited API. PyArg_ValidateKeywordArguments(), PyArg_UnpackTuple() and Py_BuildValue() were not available in limited API of version < 3.3 when PY_SSIZE_T_CLEAN is defined.

.. bpo: 29058 .. date: 9816 .. nonce: 0wNVP8 .. section: C API

All stable API extensions added after Python 3.2 are now available only when Py_LIMITED_API is set to the PY_VERSION_HEX value of the minimum Python version supporting this API.

.. bpo: 28929 .. date: 9815 .. nonce: Md7kb0 .. section: Documentation

Link the documentation to its source file on GitHub.

.. bpo: 25008 .. date: 9814 .. nonce: CeIzyU .. section: Documentation

Document smtpd.py as effectively deprecated and add a pointer to aiosmtpd, a third-party asyncio-based replacement.

.. bpo: 26355 .. date: 9813 .. nonce: SDq_8Y .. section: Documentation

Add canonical header link on each page to corresponding major version of the documentation. Patch by Matthias Bussonnier.

.. bpo: 29349 .. date: 9812 .. nonce: PjSo-t .. section: Documentation

Fix Python 2 syntax in code for building the documentation.

.. bpo: 28087 .. date: 9811 .. nonce: m8dc4R .. section: Tests

Skip test_asyncore and test_eintr poll failures on macOS. Skip some tests of select.poll when running on macOS due to unresolved issues with the underlying system poll function on some macOS versions.

.. bpo: 29571 .. date: 9810 .. nonce: r6Dixr .. section: Tests

to match the behaviour of the re.LOCALE flag, test_re.test_locale_flag now uses locale.getpreferredencoding(False) to determine the candidate encoding for the test regex (allowing it to correctly skip the test when the default locale encoding is a multi-byte encoding)

.. bpo: 28950 .. date: 9809 .. nonce: 1W8Glo .. section: Tests

Disallow -j0 to be combined with -T/-l in regrtest command line arguments.

.. bpo: 28683 .. date: 9808 .. nonce: Fp-Hdq .. section: Tests

Fix the tests that bind() a unix socket and raise PermissionError on Android for a non-root user.

.. bpo: 26939 .. date: 9807 .. nonce: 7j_W5R .. section: Tests

Add the support.setswitchinterval() function to fix test_functools hanging on the Android armv7 qemu emulator.

.. bpo: 27593 .. date: 9806 .. nonce: v87xEr .. section: Build

sys.version and the platform module python_build(), python_branch(), and python_revision() functions now use git information rather than hg when building from a repo.

.. bpo: 29572 .. date: 9805 .. nonce: iZ1XKK .. section: Build

Update Windows build and OS X installers to use OpenSSL 1.0.2k.

.. bpo: 26851 .. date: 9804 .. nonce: R5243g .. section: Build

Set Android compilation and link flags.

.. bpo: 28768 .. date: 9803 .. nonce: b9_a6E .. section: Build

Fix implicit declaration of function _setmode. Patch by Masayuki Yamamoto

.. bpo: 29080 .. date: 9802 .. nonce: b3qLQT .. section: Build

Removes hard dependency on hg.exe from PCBuild/build.bat

.. bpo: 23903 .. date: 9801 .. nonce: JXJ889 .. section: Build

Added missed names to PC/python3.def.

.. bpo: 28762 .. date: 9800 .. nonce: Ru0YN_ .. section: Build

lockf() is available on Android API level 24, but the F_LOCK macro is not defined in android-ndk-r13.

.. bpo: 28538 .. date: 9799 .. nonce: FqtN7v .. section: Build

Fix the compilation error that occurs because if_nameindex() is available on Android API level 24, but the if_nameindex structure is not defined.

.. bpo: 20211 .. date: 9798 .. nonce: gpNptI .. section: Build

Do not add the directory for installing C header files and the directory for installing object code libraries to the cross compilation search paths. Original patch by Thomas Petazzoni.

.. bpo: 28849 .. date: 9797 .. nonce: AzRRF5 .. section: Build

Do not define sys.implementation._multiarch on Android.