486 lines
9.9 KiB
ReStructuredText
486 lines
9.9 KiB
ReStructuredText
.. bpo: 40904
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.. date: 2020-06-08-01-08-57
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.. nonce: 76qQzo
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.. release date: 2020-06-08
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.. section: Core and Builtins
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Fix possible segfault in the new PEG parser when parsing f-string containing
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yield statements with no value (:code:`f"{yield}"`). Patch by Pablo Galindo
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..
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.. bpo: 40903
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.. date: 2020-06-07-22-50-10
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.. nonce: 7dWejS
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.. section: Core and Builtins
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Fixed a possible segfault in the new PEG parser when producing error
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messages for invalid assignments of the form :code:`p=p=`. Patch by Pablo
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Galindo
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..
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.. bpo: 40880
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.. date: 2020-06-06-00-23-19
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.. nonce: fjdzSh
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.. section: Core and Builtins
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Fix invalid memory read in the new parser when checking newlines in string
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literals. Patch by Pablo Galindo.
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..
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.. bpo: 40883
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.. date: 2020-06-05-23-25-00
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.. nonce: M6sQ-Q
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.. section: Core and Builtins
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Fix memory leak in when parsing f-strings in the new parser. Patch by Pablo
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Galindo
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..
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.. bpo: 40870
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.. date: 2020-06-05-12-48-28
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.. nonce: 9cd2sk
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.. section: Core and Builtins
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Raise :exc:`ValueError` when validating custom AST's where the constants
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``True``, ``False`` and ``None`` are used within a :class:`ast.Name` node.
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..
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.. bpo: 40854
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.. date: 2020-06-03-13-53-24
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.. nonce: O6vfQU
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.. section: Core and Builtins
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Allow overriding :data:`sys.platlibdir` via a new :envvar:`PYTHONPLATLIBDIR`
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environment variable.
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..
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.. bpo: 40826
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.. date: 2020-06-01-20-31-07
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.. nonce: XCI4M2
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.. section: Core and Builtins
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Fix GIL usage in :c:func:`PyOS_Readline`: lock the GIL to set an exception
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and pass the Python thread state when checking if there is a pending signal.
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..
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.. bpo: 40780
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.. date: 2020-05-26-17-43-58
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.. nonce: 3Ckdgm
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.. section: Core and Builtins
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Fix a corner case where g-style string formatting of a float failed to
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remove trailing zeros.
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..
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.. bpo: 38964
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.. date: 2020-05-25-21-49-11
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.. nonce: lrml90
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.. section: Core and Builtins
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When there's a :exc:`SyntaxError` in the expression part of an fstring, the
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filename attribute of the :exc:`SyntaxError` gets correctly set to the name
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of the file the fstring resides in.
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..
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.. bpo: 40750
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.. date: 2020-05-24-02-42-26
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.. nonce: ZmO9Ev
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.. section: Core and Builtins
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Support the "-d" debug flag in the new PEG parser. Patch by Pablo Galindo
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..
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.. bpo: 40217
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.. date: 2020-05-23-01-15-51
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.. nonce: jZsHTc
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.. section: Core and Builtins
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Instances of types created with :c:func:`PyType_FromSpecWithBases` will no
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longer automatically visit their class object when traversing references in
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the garbage collector. The user is expected to manually visit the object's
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class. Patch by Pablo Galindo.
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..
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.. bpo: 40696
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.. date: 2020-05-21-01-54-00
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.. nonce: u3n8Wx
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.. section: Core and Builtins
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Fix a hang that can arise after :meth:`generator.throw` due to a cycle in
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the exception context chain.
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..
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.. bpo: 39791
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.. date: 2020-06-05-19-29-10
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.. nonce: _CcO3d
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.. section: Library
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Refresh importlib.metadata from importlib_metadata 1.6.1.
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..
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.. bpo: 40807
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.. date: 2020-06-04-16-25-15
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.. nonce: yYyLWx
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.. section: Library
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Stop codeop._maybe_compile, used by code.InteractiveInterpreter (and IDLE).
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from from emitting each warning three times.
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..
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.. bpo: 39791
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.. date: 2020-06-02-02-16-02
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.. nonce: StCJlA
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.. section: Library
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Built-in loaders (SourceFileLoader and ZipImporter) now supply
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``TraversableResources`` implementations for ``ResourceReader``, and the
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fallback function has been removed.
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..
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.. bpo: 17005
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.. date: 2020-05-31-23-32-36
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.. nonce: JlRUGB
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.. section: Library
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The topological sort functionality that was introduced initially in the
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:mod:`functools` module has been moved to a new :mod:`graphlib` module to
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better accommodate the new tools and keep the original scope of the
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:mod:`functools` module. Patch by Pablo Galindo
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..
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.. bpo: 40777
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.. date: 2020-05-28-17-32-29
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.. nonce: 1kJU6N
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.. section: Library
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Initialize PyDateTime_IsoCalendarDateType.tp_base at run-time to avoid
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errors on some compilers.
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..
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.. bpo: 40767
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.. date: 2020-05-27-21-27-01
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.. nonce: L5MnVV
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.. section: Library
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:mod:`webbrowser` now properly finds the default browser in pure Wayland
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systems by checking the WAYLAND_DISPLAY environment variable. Patch
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contributed by Jérémy Attali.
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..
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.. bpo: 40791
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.. date: 2020-05-27-18-04-52
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.. nonce: IzpNor
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.. section: Library
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:func:`hashlib.compare_digest` uses OpenSSL's ``CRYPTO_memcmp()`` function
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when OpenSSL is available.
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..
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.. bpo: 40795
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.. date: 2020-05-27-17-00-18
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.. nonce: eZSnHA
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.. section: Library
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:mod:`ctypes` module: If ctypes fails to convert the result of a callback or
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if a ctypes callback function raises an exception, sys.unraisablehook is now
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called with an exception set. Previously, the error was logged into stderr
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by :c:func:`PyErr_Print`.
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..
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.. bpo: 30008
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.. date: 2020-05-25-22-18-38
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.. nonce: CKC3td
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.. section: Library
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Fix :mod:`ssl` code to be compatible with OpenSSL 1.1.x builds that use
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``no-deprecated`` and ``--api=1.1.0``.
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..
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.. bpo: 30064
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.. date: 2020-05-25-11-52-23
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.. nonce: 6CICsH
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.. section: Library
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Fix asyncio ``loop.sock_*`` race condition issue
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..
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.. bpo: 40759
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.. date: 2020-05-24-23-52-35
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.. nonce: DdZdaw
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.. section: Library
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Deprecate the :mod:`symbol` module.
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..
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.. bpo: 40737
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.. date: 2020-05-23-00-22-11
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.. nonce: iph-CM
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.. section: Library
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Fix possible reference leak for :mod:`sqlite3` initialization.
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..
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.. bpo: 40698
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.. date: 2020-05-20-14-38-04
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.. nonce: zwl5Hc
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.. section: Library
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:mod:`distutils` upload creates SHA2-256 and Blake2b-256 digests. MD5
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digests is skipped if platform blocks MD5.
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..
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.. bpo: 40695
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.. date: 2020-05-20-13-03-28
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.. nonce: lr4aIS
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.. section: Library
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:mod:`hashlib` no longer falls back to builtin hash implementations when
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OpenSSL provides a hash digest and the algorithm is blocked by security
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policy.
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..
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.. bpo: 9216
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.. date: 2020-05-20-12-53-20
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.. nonce: ps7Yf1
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.. section: Library
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func:`hashlib.new` passed ``usedforsecurity`` to OpenSSL EVP constructor
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``_hashlib.new()``. test_hashlib and test_smtplib handle strict security
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policy better.
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..
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.. bpo: 40614
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.. date: 2020-05-18-22-41-02
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.. nonce: 8j3kmq
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.. section: Library
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:func:`ast.parse` will not parse self documenting expressions in f-strings
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when passed ``feature_version`` is less than ``(3, 8)``.
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..
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.. bpo: 40671
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.. date: 2020-05-18-15-26-31
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.. nonce: NeZ9Cy
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.. section: Library
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Prepare ``_hashlib`` for :pep:`489` and use :c:func:`PyModule_AddType`.
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..
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.. bpo: 32309
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.. date: 2020-05-17-02-03-09
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.. nonce: KM9psl
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.. section: Library
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Added a new :term:`coroutine` :func:`asyncio.to_thread`. It is mainly used
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for running IO-bound functions in a separate thread to avoid blocking the
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event loop, and essentially works as a high-level version of
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:meth:`~asyncio.loop.run_in_executor` that can directly take keyword
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arguments.
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..
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.. bpo: 40630
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.. date: 2020-05-15-13-40-15
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.. nonce: YXEX_M
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.. section: Library
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Added :func:`tracemalloc.reset_peak` to set the peak size of traced memory
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blocks to the current size, to measure the peak of specific pieces of code.
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..
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.. bpo: 13097
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.. date: 2020-05-06-02-01-25
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.. nonce: Wh5xSK
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.. section: Library
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``ctypes`` now raises an ``ArgumentError`` when a callback is invoked with
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more than 1024 arguments.
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..
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.. bpo: 23082
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.. date: 2020-04-20-22-08-36
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.. nonce: iX90Id
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.. section: Library
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Updated the error message and docs of PurePath.relative_to() to better
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reflect the function behaviour.
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..
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.. bpo: 39244
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.. date: 2020-02-23-15-09-47
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.. nonce: aBK5IM
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.. section: Library
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Fixed :class:`multiprocessing.context.get_all_start_methods` to properly
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return the default method first on macOS.
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..
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.. bpo: 39040
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.. date: 2019-12-15-18-47-20
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.. nonce: tKa0Qs
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.. section: Library
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Fix parsing of invalid mime headers parameters by collapsing whitespace
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between encoded words in a bare-quote-string.
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..
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.. bpo: 35714
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.. date: 2019-10-25-23-45-49
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.. nonce: fw3xb7
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.. section: Library
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:exc:`struct.error` is now raised if there is a null character in a
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:mod:`struct` format string.
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..
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.. bpo: 36290
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.. date: 2019-03-17-19-01-53
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.. nonce: 7VXo_K
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.. section: Library
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AST nodes are now raising :exc:`TypeError` on conflicting keyword arguments.
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Patch contributed by Rémi Lapeyre.
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..
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.. bpo: 17258
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.. date: 2020-05-26-07-53-31
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.. nonce: X_IKTQ
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.. section: Tests
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Skip some :mod:`multiprocessing` tests when MD5 hash digest is blocked.
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..
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.. bpo: 40514
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.. date: 2020-05-19-17-43-38
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.. nonce: gW-66U
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.. section: Build
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Remove ``--with-experimental-isolated-subinterpreters`` configure option in
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Python 3.9: the experiment continues in the master branch, but it's no
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longer needed in 3.9.
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..
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.. bpo: 40683
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.. date: 2020-05-19-10-54-08
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.. nonce: W8JHrr
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.. section: Build
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Fixed an issue where the :mod:`zoneinfo` module and its tests were not
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included when Python is installed with ``make``.
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..
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.. bpo: 39631
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.. date: 2020-05-19-14-43-33
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.. nonce: Z5yXam
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.. section: Windows
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Changes the registered MIME type for ``.py`` files on Windows to
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``text/x-python`` instead of ``text/plain``.
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..
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.. bpo: 40677
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.. date: 2020-05-19-04-11-12
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.. nonce: qQbLW8
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.. section: Windows
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Manually define IO_REPARSE_TAG_APPEXECLINK in case some old Windows SDK
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doesn't have it.
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..
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.. bpo: 40741
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.. date: 2020-06-07-20-10-56
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.. nonce: 80A2BW
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.. section: macOS
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Update macOS installer to use SQLite 3.32.2.
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..
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.. bpo: 39885
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.. date: 2020-05-29-18-21-58
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.. nonce: zB_-bN
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.. section: IDLE
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Make context menu Cut and Copy work again when right-clicking within a
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selection.
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..
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.. bpo: 40723
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.. date: 2020-05-24-06-19-43
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.. nonce: AJLd4U
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.. section: IDLE
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Make test_idle pass when run after import.
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..
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.. bpo: 40910
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.. date: 2020-06-08-15-59-06
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.. nonce: L56oI0
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.. section: C API
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Export explicitly the :c:func:`Py_GetArgcArgv` function to the C API and
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document the function. Previously, it was exported implicitly which no
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longer works since Python is built with ``-fvisibility=hidden``.
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..
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.. bpo: 40724
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.. date: 2020-06-04-08-01-23
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.. nonce: qIIdSi
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.. section: C API
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Allow defining buffer slots in type specs.
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..
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.. bpo: 40826
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.. date: 2020-06-01-16-12-37
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.. nonce: zQzFoK
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.. section: C API
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:c:func:`PyOS_InterruptOccurred` now fails with a fatal error if it is
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called with the GIL released.
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