mirror of https://github.com/python/cpython
847 lines
17 KiB
ReStructuredText
847 lines
17 KiB
ReStructuredText
.. bpo: 31975
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.. date: 2018-01-05-20-54-27
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.. nonce: AmftlU
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.. release date: 2018-01-08
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.. section: Core and Builtins
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The default warning filter list now starts with a
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"default::DeprecationWarning:__main__" entry, so deprecation warnings are
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once again shown by default in single-file scripts and at the interactive
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prompt.
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..
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.. bpo: 32226
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.. date: 2018-01-04-15-06-15
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.. nonce: 7cAvRG
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.. section: Core and Builtins
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``__class_getitem__`` is now an automatic class method.
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..
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.. bpo: 32399
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.. date: 2017-12-22-13-38-17
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.. nonce: wlH12z
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.. section: Core and Builtins
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Add AIX uuid library support for RFC4122 using uuid_create() in libc.a
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..
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.. bpo: 32390
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.. date: 2017-12-22-13-28-07
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.. nonce: QPj083
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.. section: Core and Builtins
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Fix the compilation failure on AIX after the f_fsid field has been added to
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the object returned by os.statvfs() (issue #32143). Original patch by
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Michael Felt.
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..
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.. bpo: 32379
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.. date: 2017-12-19-21-14-41
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.. nonce: B7mOmI
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.. section: Core and Builtins
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Make MRO computation faster when a class inherits from a single base.
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..
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.. bpo: 32259
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.. date: 2017-12-16-14-30-21
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.. nonce: GoOJiX
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.. section: Core and Builtins
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The error message of a TypeError raised when unpack non-iterable is now more
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specific.
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..
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.. bpo: 27169
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.. date: 2017-12-15-11-50-06
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.. nonce: VO84fQ
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.. section: Core and Builtins
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The ``__debug__`` constant is now optimized out at compile time. This fixes
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also bpo-22091.
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..
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.. bpo: 32329
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.. date: 2017-12-15-00-13-04
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.. nonce: q47IN2
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.. section: Core and Builtins
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The :option:`-R` option now turns on hash randomization when the
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:envvar:`PYTHONHASHSEED` environment variable is set to ``0``. Previously,
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the option was ignored. Moreover, ``sys.flags.hash_randomization`` is now
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properly set to 0 when hash randomization is turned off by
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``PYTHONHASHSEED=0``.
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..
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.. bpo: 30416
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.. date: 2017-12-14-11-48-19
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.. nonce: hlHo_9
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.. section: Core and Builtins
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The optimizer is now protected from spending much time doing complex
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calculations and consuming much memory for creating large constants in
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constant folding. Increased limits for constants that can be produced in
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constant folding.
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..
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.. bpo: 32282
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.. date: 2017-12-12-14-02-28
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.. nonce: xFVMTn
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.. section: Core and Builtins
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Fix an unnecessary ifdef in the include of VersionHelpers.h in socketmodule
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on Windows.
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..
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.. bpo: 30579
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.. date: 2017-12-11-01-52-42
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.. nonce: X6cEzf
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.. section: Core and Builtins
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Implement TracebackType.__new__ to allow Python-level creation of traceback
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objects, and make TracebackType.tb_next mutable.
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..
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.. bpo: 32260
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.. date: 2017-12-09-11-03-51
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.. nonce: 1DAO-p
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.. section: Core and Builtins
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Don't byte swap the input keys to the SipHash algorithm on big-endian
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platforms. This should ensure siphash gives consistent results across
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platforms.
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..
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.. bpo: 31506
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.. date: 2017-12-07-23-44-29
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.. nonce: j1U2fU
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.. section: Core and Builtins
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Improve the error message logic for object.__new__ and object.__init__.
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Patch by Sanyam Khurana.
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..
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.. bpo: 20361
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.. date: 2017-12-07-17-22-30
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.. nonce: zQUmbi
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.. section: Core and Builtins
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``-b`` and ``-bb`` now inject ``'default::BytesWarning'`` and
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``error::BytesWarning`` entries into ``sys.warnoptions``, ensuring that they
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take precedence over any other warning filters configured via the ``-W``
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option or the ``PYTHONWARNINGS`` environment variable.
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..
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.. bpo: 32230
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.. date: 2017-12-06-20-18-34
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.. nonce: PgGQaB
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.. section: Core and Builtins
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`-X dev` now injects a ``'default'`` entry into sys.warnoptions, ensuring
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that it behaves identically to actually passing ``-Wdefault`` at the command
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line.
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..
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.. bpo: 29240
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.. date: 2017-12-05-23-10-58
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.. nonce: qpJP5l
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.. section: Core and Builtins
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Add a new UTF-8 mode: implementation of the :pep:`540`.
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..
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.. bpo: 32226
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.. date: 2017-12-05-21-42-58
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.. nonce: G8fqb6
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.. section: Core and Builtins
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:pep:`560`: Add support for ``__mro_entries__`` and ``__class_getitem__``. Implemented
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by Ivan Levkivskyi.
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..
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.. bpo: 32225
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.. date: 2017-12-05-21-33-47
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.. nonce: ucKjvw
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.. section: Core and Builtins
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:pep:`562`: Add support for module ``__getattr__`` and ``__dir__``. Implemented
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by Ivan Levkivskyi.
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..
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.. bpo: 31901
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.. date: 2017-11-28-15-04-14
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.. nonce: mDeCLK
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.. section: Core and Builtins
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The `atexit` module now has its callback stored per interpreter.
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..
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.. bpo: 31650
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.. date: 2017-11-26-14-38-44
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.. nonce: JWf_Im
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.. section: Core and Builtins
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Implement :pep:`552` (Deterministic pycs). Python now supports invalidating
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bytecode cache files bashed on a source content hash rather than source
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last-modified time.
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..
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.. bpo: 29469
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.. date: 2017-07-26-00-20-15
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.. nonce: potmyI
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.. section: Core and Builtins
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Move constant folding from bytecode layer to AST layer. Original patch by
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Eugene Toder.
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..
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.. bpo: 32506
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.. date: 2018-01-07-11-32-42
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.. nonce: MaT-zU
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.. section: Library
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Now that dict is defined as keeping insertion order, drop OrderedDict and
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just use plain dict.
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..
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.. bpo: 32279
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.. date: 2018-01-06-16-50-11
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.. nonce: 1xOpU8
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.. section: Library
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Add params to dataclasses.make_dataclasses(): init, repr, eq, order, hash,
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and frozen. Pass them through to dataclass().
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..
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.. bpo: 32278
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.. date: 2018-01-06-15-15-34
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.. nonce: bGnGc0
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.. section: Library
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Make type information optional on dataclasses.make_dataclass(). If omitted,
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the string 'typing.Any' is used.
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..
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.. bpo: 32499
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.. date: 2018-01-06-10-54-16
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.. nonce: koyY-4
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.. section: Library
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Add dataclasses.is_dataclass(obj), which returns True if obj is a dataclass
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or an instance of one.
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..
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.. bpo: 32468
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.. date: 2017-12-31-20-32-58
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.. nonce: YBs__0
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.. section: Library
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Improve frame repr() to mention filename, code name and current line number.
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..
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.. bpo: 23749
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.. date: 2017-12-29-00-44-42
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.. nonce: QL1Cxd
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.. section: Library
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asyncio: Implement loop.start_tls()
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..
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.. bpo: 32441
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.. date: 2017-12-28-21-30-40
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.. nonce: LqlboJ
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.. section: Library
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Return the new file descriptor (i.e., the second argument) from ``os.dup2``.
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Previously, ``None`` was always returned.
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..
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.. bpo: 32422
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.. date: 2017-12-25-20-22-47
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.. nonce: 5H3Wq2
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.. section: Library
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``functools.lru_cache`` uses less memory (3 words for each cached key) and
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takes about 1/3 time for cyclic GC.
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..
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.. bpo: 31721
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.. date: 2017-12-25-11-09-46
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.. nonce: 5gM972
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.. section: Library
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Prevent Python crash from happening when Future._log_traceback is set to
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True manually. Now it can only be set to False, or a ValueError is raised.
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..
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.. bpo: 32415
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.. date: 2017-12-23-12-45-00
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.. nonce: YufXTU
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.. section: Library
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asyncio: Add Task.get_loop() and Future.get_loop()
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..
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.. bpo: 26133
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.. date: 2017-12-21-11-08-42
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.. nonce: mt81QV
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.. section: Library
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Don't unsubscribe signals in asyncio UNIX event loop on interpreter
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shutdown.
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..
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.. bpo: 32363
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.. date: 2017-12-19-00-37-28
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.. nonce: YTeGU0
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.. section: Library
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Make asyncio.Task.set_exception() and set_result() raise
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NotImplementedError. Task._step() and Future.__await__() raise proper
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exceptions when they are in an invalid state, instead of raising an
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AssertionError.
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..
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.. bpo: 32357
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.. date: 2017-12-18-00-36-41
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.. nonce: t1F3sn
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.. section: Library
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Optimize asyncio.iscoroutine() and loop.create_task() for non-native
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coroutines (e.g. async/await compiled with Cython).
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'loop.create_task(python_coroutine)' used to be 20% faster than
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'loop.create_task(cython_coroutine)'. Now, the latter is as fast.
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..
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.. bpo: 32356
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.. date: 2017-12-17-22-50-51
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.. nonce: roZJpA
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.. section: Library
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asyncio.transport.resume_reading() and pause_reading() are now idempotent.
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New transport.is_reading() method is added.
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..
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.. bpo: 32355
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.. date: 2017-12-17-21-42-24
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.. nonce: tbaTWA
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.. section: Library
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Optimize asyncio.gather(); now up to 15% faster.
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..
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.. bpo: 32351
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.. date: 2017-12-17-14-23-23
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.. nonce: 95fh2K
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.. section: Library
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Use fastpath in asyncio.sleep if delay<0 (2x boost)
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..
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.. bpo: 32348
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.. date: 2017-12-16-18-50-57
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.. nonce: 5j__he
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.. section: Library
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Optimize asyncio.Future schedule/add/remove callback. The optimization
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shows 3-6% performance improvements of async/await code.
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..
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.. bpo: 32331
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.. date: 2017-12-15-23-48-43
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.. nonce: fIg1Uc
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.. section: Library
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Fix socket.settimeout() and socket.setblocking() to keep socket.type as is.
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Fix socket.socket() constructor to reset any bit flags applied to socket's
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type. This change only affects OSes that have SOCK_NONBLOCK and/or
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SOCK_CLOEXEC.
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..
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.. bpo: 32248
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.. date: 2017-12-15-15-34-12
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.. nonce: zmO8G2
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.. section: Library
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Add :class:`importlib.abc.ResourceReader` as an ABC for loaders to provide a
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unified API for reading resources contained within packages. Also add
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:mod:`importlib.resources` as the port of ``importlib_resources``.
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..
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.. bpo: 32311
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.. date: 2017-12-14-17-28-54
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.. nonce: DL5Ytn
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.. section: Library
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Implement asyncio.create_task(coro) shortcut
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..
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.. bpo: 32327
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.. date: 2017-12-14-16-00-25
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.. nonce: bbkSxA
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.. section: Library
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Convert asyncio functions that were documented as coroutines to coroutines.
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Affected functions: loop.sock_sendall, loop.sock_recv, loop.sock_accept,
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loop.getaddrinfo, loop.getnameinfo.
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..
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.. bpo: 32323
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.. date: 2017-12-14-10-10-10
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.. nonce: ideco
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.. section: Library
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:func:`urllib.parse.urlsplit()` does not convert zone-id (scope) to lower
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case for scoped IPv6 addresses in hostnames now.
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..
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.. bpo: 32302
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.. date: 2017-12-13-22-38-08
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.. nonce: othtTr
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.. section: Library
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Fix bdist_wininst of distutils for CRT v142: it binary compatible with CRT
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v140.
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..
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.. bpo: 29711
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.. date: 2017-12-13-22-10-36
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.. nonce: hJjghA
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.. section: Library
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Fix ``stop_serving`` in asyncio proactor loop kill all listening servers
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..
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.. bpo: 32308
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.. date: 2017-12-13-20-31-30
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.. nonce: CUbsb2
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.. section: Library
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:func:`re.sub()` now replaces empty matches adjacent to a previous non-empty
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match.
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..
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.. bpo: 29970
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.. date: 2017-12-13-19-02-38
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.. nonce: uxVOpk
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.. section: Library
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Abort asyncio SSLProtocol connection if handshake not complete within 10 seconds.
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..
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.. bpo: 32314
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.. date: 2017-12-13-16-47-38
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.. nonce: W4_U2j
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.. section: Library
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Implement asyncio.run().
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..
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.. bpo: 17852
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.. date: 2017-12-13-00-00-37
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.. nonce: Q8BP8N
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.. section: Library
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Revert incorrect fix based on misunderstanding of _Py_PyAtExit() semantics.
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..
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.. bpo: 32296
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.. date: 2017-12-12-18-01-01
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.. nonce: bwscHz
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.. section: Library
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Implement asyncio._get_running_loop() and get_event_loop() in C. This makes
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them 4x faster.
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..
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.. bpo: 32250
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.. date: 2017-12-12-16-58-20
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.. nonce: UljTa0
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.. section: Library
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Implement ``asyncio.current_task()`` and ``asyncio.all_tasks()``. Add
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helpers intended to be used by alternative task implementations:
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``asyncio._register_task``, ``asyncio._enter_task``, ``asyncio._leave_task``
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and ``asyncio._unregister_task``. Deprecate ``asyncio.Task.current_task()``
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and ``asyncio.Task.all_tasks()``.
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..
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.. bpo: 32255
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.. date: 2017-12-12-07-29-06
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.. nonce: 2bfNmM
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.. section: Library
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A single empty field is now always quoted when written into a CSV file. This
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allows to distinguish an empty row from a row consisting of a single empty
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field. Patch by Licht Takeuchi.
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..
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.. bpo: 32277
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.. date: 2017-12-11-09-53-14
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.. nonce: jkKiVC
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.. section: Library
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Raise ``NotImplementedError`` instead of ``SystemError`` on platforms where
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``chmod(..., follow_symlinks=False)`` is not supported. Patch by Anthony
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Sottile.
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..
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.. bpo: 30050
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.. date: 2017-12-10-23-44-56
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.. nonce: 4SZ3lY
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.. section: Library
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New argument warn_on_full_buffer to signal.set_wakeup_fd lets you control
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whether Python prints a warning on stderr when the wakeup fd buffer
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overflows.
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..
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.. bpo: 29137
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.. date: 2017-12-10-21-19-14
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.. nonce: CFcON1
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.. section: Library
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The ``fpectl`` library has been removed. It was never enabled by default,
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never worked correctly on x86-64, and it changed the Python ABI in ways that
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caused unexpected breakage of C extensions.
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..
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.. bpo: 32273
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.. date: 2017-12-10-19-14-55
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.. nonce: 5KKlCv
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.. section: Library
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Move asyncio.test_utils to test.test_asyncio.
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..
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.. bpo: 32272
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.. date: 2017-12-10-18-59-13
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.. nonce: Mu84Am
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.. section: Library
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Remove asyncio.async() function.
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..
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.. bpo: 32269
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.. date: 2017-12-10-12-30-13
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.. nonce: Q85pKj
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.. section: Library
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Add asyncio.get_running_loop() function.
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..
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.. bpo: 32265
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.. date: 2017-12-10-00-57-51
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.. nonce: kELtTE
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.. section: Library
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|
|
All class and static methods of builtin types now are correctly classified
|
|
by inspect.classify_class_attrs() and grouped in pydoc ouput. Added
|
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types.ClassMethodDescriptorType for unbound class methods of builtin types.
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..
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.. bpo: 32253
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.. date: 2017-12-09-11-30-35
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.. nonce: TQHSYF
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.. section: Library
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Deprecate ``yield from lock``, ``await lock``, ``with (yield from lock)``
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|
and ``with await lock`` for asyncio synchronization primitives.
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..
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.. bpo: 22589
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.. date: 2017-12-08-15-09-41
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.. nonce: 8ouqI6
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.. section: Library
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|
Changed MIME type of .bmp from 'image/x-ms-bmp' to 'image/bmp'
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|
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..
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.. bpo: 32193
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|
.. date: 2017-12-08-11-02-26
|
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.. nonce: NJe_TQ
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.. section: Library
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|
|
|
Convert asyncio to use *async/await* syntax. Old styled ``yield from`` is
|
|
still supported too.
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|
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..
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.. bpo: 32206
|
|
.. date: 2017-12-07-13-14-40
|
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.. nonce: obm4OM
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.. section: Library
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|
|
Add support to run modules with pdb
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|
|
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..
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|
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.. bpo: 32227
|
|
.. date: 2017-12-05-13-25-15
|
|
.. nonce: 3vnWFS
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|
.. section: Library
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|
|
|
``functools.singledispatch`` now supports registering implementations using
|
|
type annotations.
|
|
|
|
..
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|
|
.. bpo: 15873
|
|
.. date: 2017-12-04-17-41-40
|
|
.. nonce: -T4TRK
|
|
.. section: Library
|
|
|
|
Added new alternate constructors :meth:`datetime.datetime.fromisoformat`,
|
|
:meth:`datetime.time.fromisoformat` and :meth:`datetime.date.fromisoformat`
|
|
as the inverse operation of each classes's respective ``isoformat`` methods.
|
|
|
|
..
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|
|
.. bpo: 32199
|
|
.. date: 2017-12-04-12-23-26
|
|
.. nonce: nGof4v
|
|
.. section: Library
|
|
|
|
The getnode() ip getter now uses 'ip link' instead of 'ip link list'.
|
|
|
|
..
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|
|
|
.. bpo: 32143
|
|
.. date: 2017-11-26-17-28-26
|
|
.. nonce: o7YdXL
|
|
.. section: Library
|
|
|
|
os.statvfs() includes the f_fsid field from statvfs(2)
|
|
|
|
..
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|
|
|
.. bpo: 26439
|
|
.. date: 2017-11-24-08-35-43
|
|
.. nonce: IC45_f
|
|
.. section: Library
|
|
|
|
Fix ctypes.util.find_library() for AIX by implementing
|
|
ctypes._aix.find_library() Patch by: Michael Felt
|
|
|
|
..
|
|
|
|
.. bpo: 31993
|
|
.. date: 2017-11-10-00-05-08
|
|
.. nonce: -OMNg8
|
|
.. section: Library
|
|
|
|
The pickler now uses less memory when serializing large bytes and str
|
|
objects into a file. Pickles created with protocol 4 will require less
|
|
memory for unpickling large bytes and str objects.
|
|
|
|
..
|
|
|
|
.. bpo: 27456
|
|
.. date: 2017-11-02-11-57-41
|
|
.. nonce: snzyTC
|
|
.. section: Library
|
|
|
|
Ensure TCP_NODELAY is set on Linux. Tests by Victor Stinner.
|
|
|
|
..
|
|
|
|
.. bpo: 31778
|
|
.. date: 2017-10-18-17-29-30
|
|
.. nonce: B6vAkP
|
|
.. section: Library
|
|
|
|
ast.literal_eval() is now more strict. Addition and subtraction of arbitrary
|
|
numbers no longer allowed.
|
|
|
|
..
|
|
|
|
.. bpo: 31802
|
|
.. date: 2017-10-17-14-52-14
|
|
.. nonce: sYj2Zv
|
|
.. section: Library
|
|
|
|
Importing native path module (``posixpath``, ``ntpath``) now works even if
|
|
the ``os`` module still is not imported.
|
|
|
|
..
|
|
|
|
.. bpo: 30241
|
|
.. date: 2017-10-10-18-56-46
|
|
.. nonce: F_go20
|
|
.. section: Library
|
|
|
|
Add contextlib.AbstractAsyncContextManager. Patch by Jelle Zijlstra.
|
|
|
|
..
|
|
|
|
.. bpo: 31699
|
|
.. date: 2017-10-05-11-06-32
|
|
.. nonce: MF47Y6
|
|
.. section: Library
|
|
|
|
Fix deadlocks in :class:`concurrent.futures.ProcessPoolExecutor` when task
|
|
arguments or results cause pickling or unpickling errors. This should make
|
|
sure that calls to the :class:`ProcessPoolExecutor` API always eventually
|
|
return.
|
|
|
|
..
|
|
|
|
.. bpo: 15216
|
|
.. date: 2017-09-16-02-56-33
|
|
.. nonce: lqXCTT
|
|
.. section: Library
|
|
|
|
``TextIOWrapper.reconfigure()`` supports changing *encoding*, *errors*, and
|
|
*newline*.
|
|
|
|
..
|
|
|
|
.. bpo: 32418
|
|
.. date: 2017-12-24-17-29-37
|
|
.. nonce: eZe-ID
|
|
.. section: Documentation
|
|
|
|
Add get_loop() method to Server and AbstractServer classes.
|
|
|
|
..
|
|
|
|
.. bpo: 32252
|
|
.. date: 2017-12-11-13-31-33
|
|
.. nonce: YnFw7J
|
|
.. section: Tests
|
|
|
|
Fix faulthandler_suppress_crash_report() used to prevent core dump files
|
|
when testing crashes. getrlimit() returns zero on success.
|
|
|
|
..
|
|
|
|
.. bpo: 32002
|
|
.. date: 2017-11-11-16-35-18
|
|
.. nonce: itDxIo
|
|
.. section: Tests
|
|
|
|
Adjust C locale coercion testing for the empty locale and POSIX locale cases
|
|
to more readily adjust to platform dependent behaviour.
|
|
|
|
..
|
|
|
|
.. bpo: 19764
|
|
.. date: 2017-08-18-18-00-24
|
|
.. nonce: ODpc9y
|
|
.. section: Windows
|
|
|
|
Implement support for `subprocess.Popen(close_fds=True)` on Windows. Patch
|
|
by Segev Finer.
|
|
|
|
..
|
|
|
|
.. bpo: 24960
|
|
.. date: 2017-12-22-09-25-51
|
|
.. nonce: TGdAgO
|
|
.. section: Tools/Demos
|
|
|
|
2to3 and lib2to3 can now read pickled grammar files using pkgutil.get_data()
|
|
rather than probing the filesystem. This lets 2to3 and lib2to3 work when run
|
|
from a zipfile.
|
|
|
|
..
|
|
|
|
.. bpo: 32030
|
|
.. date: 2017-12-20-23-22-32
|
|
.. nonce: d1dcwh
|
|
.. section: C API
|
|
|
|
Py_Initialize() doesn't reset the memory allocators to default if the
|
|
``PYTHONMALLOC`` environment variable is not set.
|
|
|
|
..
|
|
|
|
.. bpo: 29084
|
|
.. date: 2017-12-16-09-59-35
|
|
.. nonce: ZGJ-LJ
|
|
.. section: C API
|
|
|
|
Undocumented C API for OrderedDict has been excluded from the limited C API.
|
|
It was added by mistake and actually never worked in the limited C API.
|
|
|
|
..
|
|
|
|
.. bpo: 32264
|
|
.. date: 2017-12-12-23-09-46
|
|
.. nonce: ahRlOI
|
|
.. section: C API
|
|
|
|
Moved the pygetopt.h header into internal/, since it has no public APIs.
|
|
|
|
..
|
|
|
|
.. bpo: 32241
|
|
.. date: 2017-12-07-15-58-15
|
|
.. nonce: LbyQt6
|
|
.. section: C API
|
|
|
|
:c:func:`Py_SetProgramName` and :c:func:`Py_SetPythonHome` now take the
|
|
``const wchar *`` arguments instead of ``wchar *``.
|