mirror of https://github.com/python/cpython
655 lines
25 KiB
ReStructuredText
655 lines
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ReStructuredText
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****************************
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What's New In Python 3.12
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****************************
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:Release: |release|
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:Date: |today|
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.. Rules for maintenance:
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* Anyone can add text to this document. Do not spend very much time
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on the wording of your changes, because your text will probably
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get rewritten to some degree.
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* The maintainer will go through Misc/NEWS periodically and add
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changes; it's therefore more important to add your changes to
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Misc/NEWS than to this file.
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* This is not a complete list of every single change; completeness
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is the purpose of Misc/NEWS. Some changes I consider too small
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or esoteric to include. If such a change is added to the text,
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I'll just remove it. (This is another reason you shouldn't spend
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too much time on writing your addition.)
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* If you want to draw your new text to the attention of the
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maintainer, add 'XXX' to the beginning of the paragraph or
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section.
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* It's OK to just add a fragmentary note about a change. For
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example: "XXX Describe the transmogrify() function added to the
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socket module." The maintainer will research the change and
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write the necessary text.
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* You can comment out your additions if you like, but it's not
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necessary (especially when a final release is some months away).
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* Credit the author of a patch or bugfix. Just the name is
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sufficient; the e-mail address isn't necessary.
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* It's helpful to add the bug/patch number as a comment:
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XXX Describe the transmogrify() function added to the socket
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module.
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(Contributed by P.Y. Developer in :issue:`12345`.)
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This saves the maintainer the effort of going through the VCS log when
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researching a change.
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This article explains the new features in Python 3.12, compared to 3.11.
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For full details, see the :ref:`changelog <changelog>`.
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.. note::
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Prerelease users should be aware that this document is currently in draft
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form. It will be updated substantially as Python 3.12 moves towards release,
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so it's worth checking back even after reading earlier versions.
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Summary -- Release highlights
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=============================
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.. This section singles out the most important changes in Python 3.12.
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Brevity is key.
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.. PEP-sized items next.
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Important deprecations, removals or restrictions:
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* :pep:`623`, Remove wstr from Unicode
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New Features
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============
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Other Language Changes
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======================
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* :class:`types.MappingProxyType` instances are now hashable if the underlying
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mapping is hashable.
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(Contributed by Serhiy Storchaka in :gh:`87995`.)
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* :class:`memoryview` now supports the half-float type (the "e" format code).
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(Contributed by Dong-hee Na and Antoine Pitrou in :gh:`90751`.)
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* The parser now raises :exc:`SyntaxError` when parsing source code containing
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null bytes. (Contributed by Pablo Galindo in :gh:`96670`.)
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* :func:`ast.parse` now raises :exc:`SyntaxError` instead of :exc:`ValueError`
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when parsing source code containing null bytes. (Contributed by Pablo Galindo
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in :gh:`96670`.)
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New Modules
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===========
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* None yet.
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Improved Modules
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================
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pathlib
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-------
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* Add :meth:`~pathlib.Path.walk` for walking the directory trees and generating
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all file or directory names within them, similar to :func:`os.walk`.
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(Contributed by Stanislav Zmiev in :gh:`90385`.)
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dis
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---
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* Pseudo instruction opcodes (which are used by the compiler but
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do not appear in executable bytecode) are now exposed in the
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:mod:`dis` module.
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:data:`~dis.HAVE_ARGUMENT` is still relevant to real opcodes,
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but it is not useful for pseudo instructions. Use the new
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:data:`~dis.hasarg` collection instead.
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(Contributed by Irit Katriel in :gh:`94216`.)
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os
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--
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* Add :data:`os.PIDFD_NONBLOCK` to open a file descriptor
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for a process with :func:`os.pidfd_open` in non-blocking mode.
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(Contributed by Kumar Aditya in :gh:`93312`.)
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shutil
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------
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* :func:`shutil.make_archive` now passes the *root_dir* argument to custom
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archivers which support it.
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In this case it no longer temporarily changes the current working directory
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of the process to *root_dir* to perform archiving.
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(Contributed by Serhiy Storchaka in :gh:`74696`.)
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sqlite3
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-------
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* Add a :ref:`command-line interface <sqlite3-cli>`.
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(Contributed by Erlend E. Aasland in :gh:`77617`.)
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threading
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---------
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* Add :func:`threading.settrace_all_threads` and
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:func:`threading.setprofile_all_threads` that allow to set tracing and
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profiling functions in all running threads in addition to the calling one.
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(Contributed by Pablo Galindo in :gh:`93503`.)
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unicodedata
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-----------
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* The Unicode database has been updated to version 15.0.0. (Contributed by
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Benjamin Peterson in :gh:`96734`).
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tempfile
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--------
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The :class:`tempfile.NamedTemporaryFile` function has a new optional parameter
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*delete_on_close* (Contributed by Evgeny Zorin in :gh:`58451`.)
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Optimizations
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=============
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* Removed ``wstr`` and ``wstr_length`` members from Unicode objects.
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It reduces object size by 8 or 16 bytes on 64bit platform. (:pep:`623`)
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(Contributed by Inada Naoki in :gh:`92536`.)
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* Added experimental support for using the BOLT binary optimizer in the build
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process, which improves performance by 1-5%.
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(Contributed by Kevin Modzelewski in :gh:`90536`.)
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CPython bytecode changes
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========================
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* Removed the :opcode:`LOAD_METHOD` instruction. It has been merged into
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:opcode:`LOAD_ATTR`. :opcode:`LOAD_ATTR` will now behave like the old
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:opcode:`LOAD_METHOD` instruction if the low bit of its oparg is set.
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(Contributed by Ken Jin in :gh:`93429`.)
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Demos and Tools
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===============
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* Remove the ``Tools/demo/`` directory which contained old demo scripts. A copy
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can be found in the `old-demos project
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<https://github.com/gvanrossum/old-demos>`_.
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(Contributed by Victor Stinner in :gh:`97681`.)
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* Remove outdated example scripts of the ``Tools/scripts/`` directory.
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A copy can be found in the `old-demos project
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<https://github.com/gvanrossum/old-demos>`_.
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(Contributed by Victor Stinner in :gh:`97669`.)
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Deprecated
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==========
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* :class:`typing.Hashable` and :class:`typing.Sized` aliases for :class:`collections.abc.Hashable`
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and :class:`collections.abc.Sized`. (:gh:`94309`.)
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* The :mod:`sqlite3` :ref:`default adapters and converters
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<sqlite3-default-converters>` are now deprecated.
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Instead, use the :ref:`sqlite3-adapter-converter-recipes`
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and tailor them to your needs.
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(Contributed by Erlend E. Aasland in :gh:`90016`.)
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* The 3-arg signatures (type, value, traceback) of :meth:`~coroutine.throw`,
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:meth:`~generator.throw` and :meth:`~agen.athrow` are deprecated and
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may be removed in a future version of Python. Use the single-arg versions
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of these functions instead. (Contributed by Ofey Chan in :gh:`89874`.)
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* :exc:`DeprecationWarning` is now raised when ``__package__`` on a
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module differs from ``__spec__.parent`` (previously it was
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:exc:`ImportWarning`).
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(Contributed by Brett Cannon in :gh:`65961`.)
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Pending Removal in Python 3.13
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------------------------------
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The following modules and APIs have been deprecated in earlier Python releases,
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and will be removed in Python 3.13.
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Modules (see :pep:`594`):
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* :mod:`aifc`
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* :mod:`audioop`
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* :mod:`cgi`
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* :mod:`cgitb`
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* :mod:`chunk`
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* :mod:`crypt`
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* :mod:`imghdr`
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* :mod:`mailcap`
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* :mod:`msilib`
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* :mod:`nis`
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* :mod:`nntplib`
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* :mod:`ossaudiodev`
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* :mod:`pipes`
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* :mod:`sndhdr`
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* :mod:`spwd`
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* :mod:`sunau`
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* :mod:`telnetlib`
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* :mod:`uu`
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* :mod:`xdrlib`
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APIs:
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* :class:`configparser.LegacyInterpolation` (:gh:`90765`)
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* :func:`locale.getdefaultlocale` (:gh:`90817`)
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* :meth:`turtle.RawTurtle.settiltangle` (:gh:`50096`)
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* :func:`unittest.findTestCases` (:gh:`50096`)
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* :func:`unittest.makeSuite` (:gh:`50096`)
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* :func:`unittest.getTestCaseNames` (:gh:`50096`)
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* :class:`webbrowser.MacOSX` (:gh:`86421`)
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Pending Removal in Python 3.14
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==============================
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* Deprecated the following :mod:`importlib.abc` classes, scheduled for removal in
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Python 3.14:
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* :class:`importlib.abc.ResourceReader`
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* :class:`importlib.abc.Traversable`
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* :class:`importlib.abc.TraversableResources`
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Use :mod:`importlib.resources.abc` classes instead:
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* :class:`importlib.resources.abc.TraversableResources`
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* :class:`importlib.resources.abc.Traversable`
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* :class:`importlib.resources.abc.TraversableResources`
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(Contributed by Jason R. Coombs and Hugo van Kemenade in :gh:`93963`.)
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* Creating :c:data:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
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bases using the C API.
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* ``__package__`` will cease to be set or taken into consideration by
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the import system (:gh:`97879`).
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Pending Removal in Future Versions
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----------------------------------
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The following APIs were deprecated in earlier Python versions and will be removed,
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although there is currently no date scheduled for their removal.
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* :class:`typing.Text` (:gh:`92332`)
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* Currently Python accepts numeric literals immediately followed by keywords,
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for example ``0in x``, ``1or x``, ``0if 1else 2``. It allows confusing
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and ambiguous expressions like ``[0x1for x in y]`` (which can be
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interpreted as ``[0x1 for x in y]`` or ``[0x1f or x in y]``).
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A syntax warning is raised if the numeric literal is
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immediately followed by one of keywords :keyword:`and`, :keyword:`else`,
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:keyword:`for`, :keyword:`if`, :keyword:`in`, :keyword:`is` and :keyword:`or`.
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In a future release it will be changed to a syntax error. (:gh:`87999`)
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Removed
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=======
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* Removed many old deprecated :mod:`unittest` features:
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- A number of :class:`~unittest.TestCase` method aliases:
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============================ =============================== ===============
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Deprecated alias Method Name Deprecated in
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============================ =============================== ===============
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``failUnless`` :meth:`.assertTrue` 3.1
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``failIf`` :meth:`.assertFalse` 3.1
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``failUnlessEqual`` :meth:`.assertEqual` 3.1
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``failIfEqual`` :meth:`.assertNotEqual` 3.1
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``failUnlessAlmostEqual`` :meth:`.assertAlmostEqual` 3.1
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``failIfAlmostEqual`` :meth:`.assertNotAlmostEqual` 3.1
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``failUnlessRaises`` :meth:`.assertRaises` 3.1
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``assert_`` :meth:`.assertTrue` 3.2
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``assertEquals`` :meth:`.assertEqual` 3.2
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``assertNotEquals`` :meth:`.assertNotEqual` 3.2
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``assertAlmostEquals`` :meth:`.assertAlmostEqual` 3.2
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``assertNotAlmostEquals`` :meth:`.assertNotAlmostEqual` 3.2
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``assertRegexpMatches`` :meth:`.assertRegex` 3.2
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``assertRaisesRegexp`` :meth:`.assertRaisesRegex` 3.2
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``assertNotRegexpMatches`` :meth:`.assertNotRegex` 3.5
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============================ =============================== ===============
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You can use https://github.com/isidentical/teyit to automatically modernise
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your unit tests.
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- Undocumented and broken :class:`~unittest.TestCase` method
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``assertDictContainsSubset`` (deprecated in Python 3.2).
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- Undocumented :meth:`TestLoader.loadTestsFromModule
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<unittest.TestLoader.loadTestsFromModule>` parameter *use_load_tests*
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(deprecated and ignored since Python 3.2).
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- An alias of the :class:`~unittest.TextTestResult` class:
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``_TextTestResult`` (deprecated in Python 3.2).
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(Contributed by Serhiy Storchaka in :issue:`45162`.)
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* Several names deprecated in the :mod:`configparser` way back in 3.2 have
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been removed per :gh:`89336`:
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* :class:`configparser.ParsingError` no longer has a ``filename`` attribute
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or argument. Use the ``source`` attribute and argument instead.
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* :mod:`configparser` no longer has a ``SafeConfigParser`` class. Use the
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shorter :class:`~configparser.ConfigParser` name instead.
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* :class:`configparser.ConfigParser` no longer has a ``readfp`` method.
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Use :meth:`~configparser.ConfigParser.read_file` instead.
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* The following undocumented :mod:`sqlite3` features, deprecated in Python
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3.10, are now removed:
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* ``sqlite3.enable_shared_cache()``
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* ``sqlite3.OptimizedUnicode``
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If a shared cache must be used, open the database in URI mode using the
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``cache=shared`` query parameter.
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The ``sqlite3.OptimizedUnicode`` text factory has been an alias for
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:class:`str` since Python 3.3. Code that previously set the text factory to
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``OptimizedUnicode`` can either use ``str`` explicitly, or rely on the
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default value which is also ``str``.
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(Contributed by Erlend E. Aasland in :gh:`92548`.)
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* The ``--experimental-isolated-subinterpreters`` configure flag
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(and corresponding ``EXPERIMENTAL_ISOLATED_SUBINTERPRETERS``)
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have been removed.
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* ``smtpd`` has been removed according to the schedule in :pep:`594`,
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having been deprecated in Python 3.4.7 and 3.5.4.
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Use aiosmtpd_ PyPI module or any other
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:mod:`asyncio`-based server instead.
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(Contributed by Oleg Iarygin in :gh:`93243`.)
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.. _aiosmtpd: https://pypi.org/project/aiosmtpd/
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* Remove ``io.OpenWrapper`` and ``_pyio.OpenWrapper``, deprecated in Python
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3.10: just use :func:`open` instead. The :func:`open` (:func:`io.open`)
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function is a built-in function. Since Python 3.10, :func:`_pyio.open` is
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also a static method.
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(Contributed by Victor Stinner in :gh:`94169`.)
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* Remove the :func:`ssl.RAND_pseudo_bytes` function, deprecated in Python 3.6:
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use :func:`os.urandom` or :func:`ssl.RAND_bytes` instead.
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(Contributed by Victor Stinner in :gh:`94199`.)
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* :mod:`gzip`: Remove the ``filename`` attribute of :class:`gzip.GzipFile`,
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deprecated since Python 2.6, use the :attr:`~gzip.GzipFile.name` attribute
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instead. In write mode, the ``filename`` attribute added ``'.gz'`` file
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extension if it was not present.
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(Contributed by Victor Stinner in :gh:`94196`.)
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* Remove the :func:`ssl.match_hostname` function. The
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:func:`ssl.match_hostname` was deprecated in Python 3.7. OpenSSL performs
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hostname matching since Python 3.7, Python no longer uses the
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:func:`ssl.match_hostname` function.
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(Contributed by Victor Stinner in :gh:`94199`.)
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* Remove the :func:`locale.format` function, deprecated in Python 3.7:
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use :func:`locale.format_string` instead.
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(Contributed by Victor Stinner in :gh:`94226`.)
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* :mod:`hashlib`: Remove the pure Python implementation of
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:func:`hashlib.pbkdf2_hmac()`, deprecated in Python 3.10. Python 3.10 and
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newer requires OpenSSL 1.1.1 (:pep:`644`): this OpenSSL version provides
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a C implementation of :func:`~hashlib.pbkdf2_hmac()` which is faster.
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(Contributed by Victor Stinner in :gh:`94199`.)
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* :mod:`xml.etree`: Remove the ``ElementTree.Element.copy()`` method of the
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pure Python implementation, deprecated in Python 3.10, use the
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:func:`copy.copy` function instead. The C implementation of :mod:`xml.etree`
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has no ``copy()`` method, only a ``__copy__()`` method.
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(Contributed by Victor Stinner in :gh:`94383`.)
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* :mod:`zipimport`: Remove ``find_loader()`` and ``find_module()`` methods,
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deprecated in Python 3.10: use the ``find_spec()`` method instead. See
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:pep:`451` for the rationale.
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(Contributed by Victor Stinner in :gh:`94379`.)
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* Remove the :func:`ssl.wrap_socket` function, deprecated in Python 3.7:
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instead, create a :class:`ssl.SSLContext` object and call its
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:class:`ssl.SSLContext.wrap_socket` method. Any package that still uses
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:func:`ssl.wrap_socket` is broken and insecure. The function neither sends a
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SNI TLS extension nor validates server hostname. Code is subject to `CWE-295
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<https://cwe.mitre.org/data/definitions/295.html>`_: Improper Certificate
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Validation.
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(Contributed by Victor Stinner in :gh:`94199`.)
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* Many previously deprecated cleanups in :mod:`importlib` have now been
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completed:
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* References to, and support for ``module_repr()`` has been eradicated.
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* ``importlib.util.set_package`` has been removed.
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(Contributed by Brett Cannon in :gh:`65961`.)
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Porting to Python 3.12
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======================
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This section lists previously described changes and other bugfixes
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that may require changes to your code.
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Changes in the Python API
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-------------------------
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* More strict rules are now applied for numerical group references and
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group names in regular expressions.
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Only sequence of ASCII digits is now accepted as a numerical reference.
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The group name in bytes patterns and replacement strings can now only
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contain ASCII letters and digits and underscore.
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(Contributed by Serhiy Storchaka in :gh:`91760`.)
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* Removed randrange() functionality deprecated since Python 3.10. Formerly,
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randrange(10.0) losslessly converted to randrange(10). Now, it raises a
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TypeError. Also, the exception raised for non-integral values such as
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randrange(10.5) or randrange('10') has been changed from ValueError to
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TypeError. This also prevents bugs where ``randrange(1e25)`` would silently
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select from a larger range than ``randrange(10**25)``.
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(Originally suggested by Serhiy Storchaka gh-86388.)
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* :class:`argparse.ArgumentParser` changed encoding and error handler
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for reading arguments from file (e.g. ``fromfile_prefix_chars`` option)
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from default text encoding (e.g. :func:`locale.getpreferredencoding(False) <locale.getpreferredencoding>`)
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to :term:`filesystem encoding and error handler`.
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Argument files should be encoded in UTF-8 instead of ANSI Codepage on Windows.
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* Removed the ``asyncore``-based ``smtpd`` module deprecated in Python 3.4.7
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and 3.5.4. A recommended replacement is the
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:mod:`asyncio`-based aiosmtpd_ PyPI module.
|
|
|
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* :func:`shlex.split`: Passing ``None`` for *s* argument now raises an
|
|
exception, rather than reading :data:`sys.stdin`. The feature was deprecated
|
|
in Python 3.9.
|
|
(Contributed by Victor Stinner in :gh:`94352`.)
|
|
|
|
|
|
Build Changes
|
|
=============
|
|
|
|
* Python no longer uses ``setup.py`` to build shared C extension modules.
|
|
Build parameters like headers and libraries are detected in ``configure``
|
|
script. Extensions are built by ``Makefile``. Most extensions use
|
|
``pkg-config`` and fall back to manual detection.
|
|
(Contributed by Christian Heimes in :gh:`93939`.)
|
|
|
|
* ``va_start()`` with two parameters, like ``va_start(args, format),``
|
|
is now required to build Python.
|
|
``va_start()`` is no longer called with a single parameter.
|
|
(Contributed by Kumar Aditya in :gh:`93207`.)
|
|
|
|
* CPython now uses the ThinLTO option as the default link time optimization policy
|
|
if the Clang compiler accepts the flag.
|
|
(Contributed by Dong-hee Na in :gh:`89536`.)
|
|
|
|
|
|
C API Changes
|
|
=============
|
|
|
|
New Features
|
|
------------
|
|
|
|
* Added the new limited C API function :c:func:`PyType_FromMetaclass`,
|
|
which generalizes the existing :c:func:`PyType_FromModuleAndSpec` using
|
|
an additional metaclass argument.
|
|
(Contributed by Wenzel Jakob in :gh:`93012`.)
|
|
|
|
* API for creating objects that can be called using
|
|
:ref:`the vectorcall protocol <vectorcall>` was added to the
|
|
:ref:`Limited API <stable>`:
|
|
|
|
* :const:`Py_TPFLAGS_HAVE_VECTORCALL`
|
|
* :c:func:`PyVectorcall_NARGS`
|
|
* :c:func:`PyVectorcall_Call`
|
|
* :c:type:`vectorcallfunc`
|
|
|
|
The :const:`Py_TPFLAGS_HAVE_VECTORCALL` flag is now removed from a class
|
|
when the class's :py:meth:`~object.__call__` method is reassigned.
|
|
This makes vectorcall safe to use with mutable types (i.e. heap types
|
|
without the :const:`immutable <Py_TPFLAGS_IMMUTABLETYPE>` flag).
|
|
Mutable types that do not override :c:member:`~PyTypeObject.tp_call` now
|
|
inherit the ``Py_TPFLAGS_HAVE_VECTORCALL`` flag.
|
|
(Contributed by Petr Viktorin in :gh:`93274`.)
|
|
|
|
The :const:`Py_TPFLAGS_MANAGED_DICT` and :const:`Py_TPFLAGS_MANAGED_WEAKREF`
|
|
flags have been added. This allows extensions classes to support object
|
|
``__dict__`` and weakrefs with less bookkeeping,
|
|
using less memory and with faster access.
|
|
|
|
* Added two new public functions,
|
|
:c:func:`PyEval_SetProfileAllThreads` and
|
|
:c:func:`PyEval_SetTraceAllThreads`, that allow to set tracing and profiling
|
|
functions in all running threads in addition to the calling one. (Contributed
|
|
by Pablo Galindo in :gh:`93503`.)
|
|
|
|
* Added new function :c:func:`PyFunction_SetVectorcall` to the C API
|
|
which sets the vectorcall field of a given :c:type:`PyFunctionObject`.
|
|
(Contributed by Andrew Frost in :gh:`92257`.)
|
|
|
|
Porting to Python 3.12
|
|
----------------------
|
|
|
|
* Legacy Unicode APIs based on ``Py_UNICODE*`` representation has been removed.
|
|
Please migrate to APIs based on UTF-8 or ``wchar_t*``.
|
|
|
|
* Argument parsing functions like :c:func:`PyArg_ParseTuple` doesn't support
|
|
``Py_UNICODE*`` based format (e.g. ``u``, ``Z``) anymore. Please migrate
|
|
to other formats for Unicode like ``s``, ``z``, ``es``, and ``U``.
|
|
|
|
* ``tp_weaklist`` for all static builtin types is always ``NULL``.
|
|
This is an internal-only field on ``PyTypeObject``
|
|
but we're pointing out the change in case someone happens to be
|
|
accessing the field directly anyway. To avoid breakage, consider
|
|
using the existing public C-API instead, or, if necessary, the
|
|
(internal-only) ``_PyObject_GET_WEAKREFS_LISTPTR()`` macro.
|
|
|
|
* This internal-only :c:member:`PyTypeObject.tp_subclasses` may now not be
|
|
a valid object pointer. Its type was changed to :c:expr:`void *` to
|
|
reflect this. We mention this in case someone happens to be accessing the
|
|
internal-only field directly.
|
|
|
|
To get a list of subclasses, call the Python method
|
|
:py:meth:`~class.__subclasses__` (using :c:func:`PyObject_CallMethod`,
|
|
for example).
|
|
|
|
* An unrecognized format character in :c:func:`PyUnicode_FromFormat` and
|
|
:c:func:`PyUnicode_FromFormatV` now sets a :exc:`SystemError`.
|
|
In previous versions it caused all the rest of the format string to be
|
|
copied as-is to the result string, and any extra arguments discarded.
|
|
(Contributed by Serhiy Storchaka in :gh:`95781`.)
|
|
|
|
* Fixed wrong sign placement in :c:func:`PyUnicode_FromFormat` and
|
|
:c:func:`PyUnicode_FromFormatV`.
|
|
(Contributed by Philip Georgi in :gh:`95504`.)
|
|
|
|
* Extension classes wanting to add a ``__dict__`` or weak reference slot
|
|
should use :const:`Py_TPFLAGS_MANAGED_DICT` and
|
|
:const:`Py_TPFLAGS_MANAGED_WEAKREF` instead of ``tp_dictoffset`` and
|
|
``tp_weaklistoffset``, respectively.
|
|
The use of ``tp_dictoffset`` and ``tp_weaklistoffset`` is still
|
|
supported, but does not fully support multiple inheritance
|
|
(:gh: `95589`), and performance may be worse.
|
|
Classes declaring :const:`Py_TPFLAGS_MANAGED_DICT` should call
|
|
:c:func:`_PyObject_VisitManagedDict` and :c:func:`_PyObject_ClearManagedDict`
|
|
to traverse and clear their instance's dictionaries.
|
|
To clear weakrefs, call :c:func:`PyObject_ClearWeakRefs`, as before.
|
|
|
|
Deprecated
|
|
----------
|
|
|
|
* Deprecate global configuration variable:
|
|
|
|
* :c:var:`Py_DebugFlag`: use :c:member:`PyConfig.parser_debug`
|
|
* :c:var:`Py_VerboseFlag`: use :c:member:`PyConfig.verbose`
|
|
* :c:var:`Py_QuietFlag`: use :c:member:`PyConfig.quiet`
|
|
* :c:var:`Py_InteractiveFlag`: use :c:member:`PyConfig.interactive`
|
|
* :c:var:`Py_InspectFlag`: use :c:member:`PyConfig.inspect`
|
|
* :c:var:`Py_OptimizeFlag`: use :c:member:`PyConfig.optimization_level`
|
|
* :c:var:`Py_NoSiteFlag`: use :c:member:`PyConfig.site_import`
|
|
* :c:var:`Py_BytesWarningFlag`: use :c:member:`PyConfig.bytes_warning`
|
|
* :c:var:`Py_FrozenFlag`: use :c:member:`PyConfig.pathconfig_warnings`
|
|
* :c:var:`Py_IgnoreEnvironmentFlag`: use :c:member:`PyConfig.use_environment`
|
|
* :c:var:`Py_DontWriteBytecodeFlag`: use :c:member:`PyConfig.write_bytecode`
|
|
* :c:var:`Py_NoUserSiteDirectory`: use :c:member:`PyConfig.user_site_directory`
|
|
* :c:var:`Py_UnbufferedStdioFlag`: use :c:member:`PyConfig.buffered_stdio`
|
|
* :c:var:`Py_HashRandomizationFlag`: use :c:member:`PyConfig.use_hash_seed`
|
|
and :c:member:`PyConfig.hash_seed`
|
|
* :c:var:`Py_IsolatedFlag`: use :c:member:`PyConfig.isolated`
|
|
* :c:var:`Py_LegacyWindowsFSEncodingFlag`: use :c:member:`PyConfig.legacy_windows_fs_encoding`
|
|
* :c:var:`Py_LegacyWindowsStdioFlag`: use :c:member:`PyConfig.legacy_windows_stdio`
|
|
* :c:var:`Py_FileSystemDefaultEncoding`: use :c:member:`PyConfig.filesystem_encoding`
|
|
* :c:var:`Py_FileSystemDefaultEncodeErrors`: use :c:member:`PyConfig.filesystem_errors`
|
|
* :c:var:`Py_UTF8Mode`: use :c:member:`PyPreConfig.utf8_mode` (see :c:func:`Py_PreInitialize`)
|
|
|
|
The :c:func:`Py_InitializeFromConfig` API should be used with
|
|
:c:type:`PyConfig` instead.
|
|
(Contributed by Victor Stinner in :gh:`77782`.)
|
|
|
|
* Creating :c:data:`immutable types <Py_TPFLAGS_IMMUTABLETYPE>` with mutable
|
|
bases is deprecated and will be disabled in Python 3.14.
|
|
|
|
|
|
Removed
|
|
-------
|
|
|
|
* Remove the ``token.h`` header file. There was never any public tokenizer C
|
|
API. The ``token.h`` header file was only designed to be used by Python
|
|
internals.
|
|
(Contributed by Victor Stinner in :gh:`92651`.)
|
|
|
|
* Leagcy Unicode APIs has been removed. See :pep:`623` for detail.
|
|
|
|
* :c:macro:`PyUnicode_WCHAR_KIND`
|
|
* :c:func:`PyUnicode_AS_UNICODE`
|
|
* :c:func:`PyUnicode_AsUnicode`
|
|
* :c:func:`PyUnicode_AsUnicodeAndSize`
|
|
* :c:func:`PyUnicode_AS_DATA`
|
|
* :c:func:`PyUnicode_FromUnicode`
|
|
* :c:func:`PyUnicode_GET_SIZE`
|
|
* :c:func:`PyUnicode_GetSize`
|
|
* :c:func:`PyUnicode_GET_DATA_SIZE`
|
|
|
|
* Remove the ``PyUnicode_InternImmortal()`` function and the
|
|
``SSTATE_INTERNED_IMMORTAL`` macro.
|
|
(Contributed by Victor Stinner in :gh:`85858`.)
|