库

• gh-87901 [https://github.com/python/cpython/issues/87901]: Add the encoding parameter to os.popen().

• gh-90997 [https://github.com/python/cpython/issues/90997]: Fix an issue where dis utilities may interpret populated inline cache entries as valid instructions.

• gh-92332 [https://github.com/python/cpython/issues/92332]: Deprecate typing.Text (removal of the class is currently not planned). Patch by Alex Waygood.

• gh-78157 [https://github.com/python/cpython/issues/78157]: Deprecate nested classes in enum definitions becoming members — in 3.13 they will be normal classes; add member and nonmember functions to allow control over results now.

• gh-92356 [https://github.com/python/cpython/issues/92356]: Fixed a performance regression in ctypes function calls.

• gh-90997 [https://github.com/python/cpython/issues/90997]: Show the actual named values stored in inline caches when show_caches=True is passed to dis utilities.

• gh-92301 [https://github.com/python/cpython/issues/92301]: Prefer close_range() to iterating over procfs for file descriptor closing in subprocess for better performance.

• gh-67248 [https://github.com/python/cpython/issues/67248]: Sort the miscellaneous topics in Cmd.do_help()

• gh-92210 [https://github.com/python/cpython/issues/92210]: Port socket.__init__ to Argument Clinic. Patch by Cinder.

• gh-80010 [https://github.com/python/cpython/issues/80010]: Add support for generalized ISO 8601 parsing to datetime.datetime.fromisoformat(), datetime.date.fromisoformat() and datetime.time.fromisoformat(). Patch by Paul Ganssle.

• gh-92118 [https://github.com/python/cpython/issues/92118]: Fix a 3.11 regression in contextmanager(), which caused it to propagate exceptions with incorrect tracebacks.

• gh-90887 [https://github.com/python/cpython/issues/90887]: Adding COPYFILE_STAT, COPYFILE_ACL and COPYFILE_XATTR constants for os.fcopyfile() available in macOs.

• gh-91215 [https://github.com/python/cpython/issues/91215]: For @dataclass, add weakrefslot. The new parameter defaults to False. If true, and if slots=True, add a slot named "\_weakref__", which will allow instances to be weakref'd. Contributed by Eric V. Smith

• gh-85984 [https://github.com/python/cpython/issues/85984]: New function os.login_tty() for Unix.

• gh-92128 [https://github.com/python/cpython/issues/92128]: Add __class_getitem__() to logging.LoggerAdapter and logging.StreamHandler, allowing them to be parameterized at runtime. Patch by Alex Waygood.

• gh-92049 [https://github.com/python/cpython/issues/92049]: Forbid pickling constants re._constants.SUCCESS etc. Previously, pickling did not fail, but the result could not be unpickled.

• gh-92062 [https://github.com/python/cpython/issues/92062]: inspect.Parameter now raises ValueError if name is a keyword, in addition to the existing check that it is an identifier.

• gh-87390 [https://github.com/python/cpython/issues/87390]: Add an __unpacked__ attribute to types.GenericAlias. Patch by Jelle Zijlstra.

• gh-88089 [https://github.com/python/cpython/issues/88089]: Add support for generic typing.NamedTuple.

• gh-91996 [https://github.com/python/cpython/issues/91996]: New http.HTTPMethod enum to represent all the available HTTP request methods in a convenient way

• gh-91984 [https://github.com/python/cpython/issues/91984]: Modified test strings in test_argparse.py to not contain trailing spaces before end of line.

• gh-91952 [https://github.com/python/cpython/issues/91952]: Add encoding="locale" support to TextIOWrapper.reconfigure().

• gh-91954 [https://github.com/python/cpython/issues/91954]: Add encoding and errors arguments to subprocess.getoutput() and subprocess.getstatusoutput().

• bpo-47029 [https://bugs.python.org/issue?@action=redirect&bpo=47029]: Always close the read end of the pipe used by multiprocessing.Queue after the last write of buffered data to the write end of the pipe to avoid BrokenPipeError at garbage collection and at multiprocessing.Queue.close() calls. Patch by Géry Ogam.

• gh-91928 [https://github.com/python/cpython/issues/91928]: Add datetime.UTC alias for datetime.timezone.utc.

Patch by Kabir Kwatra.

• gh-68966 [https://github.com/python/cpython/issues/68966]: The mailcap module is now deprecated and will be removed in Python 3.13. See PEP 594 [https://peps.python.org/pep-0594/] for the rationale and the mimetypes module for an alternative. Patch by Victor Stinner.

• gh-91401 [https://github.com/python/cpython/issues/91401]: Provide a way to disable subprocess use of vfork() just in case it is ever needed and document the existing mechanism for posix_spawn().

• gh-64783 [https://github.com/python/cpython/issues/64783]: Fix signal.NSIG value on FreeBSD to accept signal numbers greater than 32, like signal.SIGRTMIN and signal.SIGRTMAX. Patch by Victor Stinner.

• gh-91910 [https://github.com/python/cpython/issues/91910]: Add missing f prefix to fstrings in error messages from the multiprocessing and asyncio modules.

• gh-91860 [https://github.com/python/cpython/issues/91860]: Add typing.dataclass_transform(), implementing PEP 681 [https://peps.python.org/pep-0681/]. Patch by Jelle Zijlstra.

• gh-91832 [https://github.com/python/cpython/issues/91832]: Add required attribute to argparse.Action repr output.

• gh-91827 [https://github.com/python/cpython/issues/91827]: In the tkinter module add method info_patchlevel() which returns the exact version of the Tcl library as a named tuple similar to sys.version_info.

• gh-84461 [https://github.com/python/cpython/issues/84461]: Add --enable-wasm-pthreads to enable pthreads support for WASM builds. Emscripten/node no longer has threading enabled by default. Include additional file systems.

• gh-91821 [https://github.com/python/cpython/issues/91821]: Fix unstable test_from_tuple test in test_decimal.py.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the xdrlib module.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the uu module.

• gh-91760 [https://github.com/python/cpython/issues/91760]: More strict rules will be applied for numerical group references and group names in regular expressions. For now, a deprecation warning is emitted for group references and group names which will be errors in future Python versions.

• gh-84461 [https://github.com/python/cpython/issues/84461]: Add provisional sys._emscripten_info named tuple with build-time and runtime information about Emscripten platform.

• gh-90623 [https://github.com/python/cpython/issues/90623]: signal.raise_signal() and os.kill() now check immediately for pending signals. Patch by Victor Stinner.

• gh-91734 [https://github.com/python/cpython/issues/91734]: Fix OSS audio support on Solaris.

• gh-90633 [https://github.com/python/cpython/issues/90633]: Include the passed value in the exception thrown by typing.assert_never(). Patch by Jelle Zijlstra.

• gh-91700 [https://github.com/python/cpython/issues/91700]: Compilation of regular expression containing a conditional expression (?(group)…) now raises an appropriate re.error if the group number refers to not defined group. Previously an internal RuntimeError was raised.

• gh-91231 [https://github.com/python/cpython/issues/91231]: Add an optional keyword shutdown_timeout parameter to the multiprocessing.BaseManager constructor. Kill the process if terminate() takes longer than the timeout. Patch by Victor Stinner.

• gh-91621 [https://github.com/python/cpython/issues/91621]: Fix typing.get_type_hints() for collections.abc.Callable. Patch by Shantanu Jain.

• gh-90568 [https://github.com/python/cpython/issues/90568]: Parsing \N escapes of Unicode Named Character Sequences in a regular expression raises now re.error instead of TypeError.

• gh-91670 [https://github.com/python/cpython/issues/91670]: Remove deprecated SO config variable in sysconfig.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the telnetlib module.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the sunau module.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the spwd module.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the sndhdr module, as well as inline needed functionality for email.mime.MIMEAudio.

• gh-91616 [https://github.com/python/cpython/issues/91616]: re module, fix fullmatch() mismatch when using Atomic Grouping or Possessive Quantifiers.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the 'pipes' module.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the ossaudiodev module.

• bpo-47256 [https://bugs.python.org/issue?@action=redirect&bpo=47256]: re module, limit the maximum capturing group to 1,073,741,823 in 64-bit build, this increases the depth of backtracking.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the nis module.

• gh-91595 [https://github.com/python/cpython/issues/91595]: Fix the comparison of character and integer inside Tools.gdb.libpython.write_repr(). Patch by Yu Liu.

• gh-74166 [https://github.com/python/cpython/issues/74166]: Add option to raise all errors from create_connection() in an ExceptionGroup when it fails to create a connection. The default remains to raise only the last error that had occurred when multiple addresses were tried.

• gh-91487 [https://github.com/python/cpython/issues/91487]: Optimize asyncio UDP speed, over 100 times faster when transferring a large file.

• gh-91575 [https://github.com/python/cpython/issues/91575]: Update case-insensitive matching in the re module to the latest Unicode version.

• gh-90622 [https://github.com/python/cpython/issues/90622]: In concurrent.futures.process.ProcessPoolExecutor disallow the "fork" multiprocessing start method when the new max_tasks_per_child feature is used as the mix of threads+fork can hang the child processes. Default to using the safe "spawn" start method in that circumstance if no mp_context was supplied.

• gh-89022 [https://github.com/python/cpython/issues/89022]: In sqlite3, SQLITE_MISUSE result codes are now mapped to InterfaceError instead of ProgrammingError. Also, more accurate exceptions are raised when binding parameters fail. Patch by Erlend E. Aasland.

• gh-91526 [https://github.com/python/cpython/issues/91526]: Stop calling os.device_encoding(file.fileno()) in TextIOWrapper. It was complex, never documented, and didn't work for most cases. (Patch by Inada Naoki.)

• gh-88116 [https://github.com/python/cpython/issues/88116]: Change the frame-related functions in the inspect module to return a regular object (that is backwards compatible with the old tuple-like interface) that include the extended PEP 657 [https://peps.python.org/pep-0657/] position information (end line number, column and end column). The affected functions are: inspect.getframeinfo(), inspect.getouterframes(), inspect.getinnerframes(), inspect.stack() and inspect.trace(). Patch by Pablo Galindo.

• gh-69093 [https://github.com/python/cpython/issues/69093]: Add indexing and slicing support to sqlite3.Blob. Patch by Aviv Palivoda and Erlend E. Aasland.

• gh-69093 [https://github.com/python/cpython/issues/69093]: Add context manager support to sqlite3.Blob. Patch by Aviv Palivoda and Erlend E. Aasland.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate nntplib.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate msilib.

• gh-91404 [https://github.com/python/cpython/issues/91404]: Improve the performance of re matching by using computed gotos (or "threaded code") on supported platforms and removing expensive pointer indirections.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the imghdr module.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the crypt module.

• gh-91276 [https://github.com/python/cpython/issues/91276]: Make space for longer opcodes in dis output.

• bpo-47000 [https://bugs.python.org/issue?@action=redirect&bpo=47000]: Make TextIOWrapper uses locale encoding when encoding="locale" is specified even in UTF-8 mode.

• gh-91230 [https://github.com/python/cpython/issues/91230]: warnings.catch_warnings() now accepts arguments for warnings.simplefilter(), providing a more concise way to locally ignore warnings or convert them to errors.

• gh-91217 [https://github.com/python/cpython/issues/91217]: Deprecate the chunk module.

• gh-91498 [https://github.com/python/cpython/issues/91498]: Add the TCP_CONNECTION_INFO option (available on macOS) to socket.

• bpo-47260 [https://bugs.python.org/issue?@action=redirect&bpo=47260]: Fix os.closerange() potentially being a no-op in a Linux seccomp sandbox.

• bpo-47087 [https://bugs.python.org/issue?@action=redirect&bpo=47087]: Implement typing.Required and typing.NotRequired ( PEP 655 [https://peps.python.org/pep-0655/]). Patch by David Foster and Jelle Zijlstra.

• bpo-47061 [https://bugs.python.org/issue?@action=redirect&bpo=47061]: Deprecate cgi and cgitb.

• bpo-47061 [https://bugs.python.org/issue?@action=redirect&bpo=47061]: Deprecate audioop.

• bpo-47000 [https://bugs.python.org/issue?@action=redirect&bpo=47000]: Add locale.getencoding() to get the current locale encoding. It is similar to locale.getpreferredencoding(False) but ignores the Python UTF-8 Mode.

• bpo-42012 [https://bugs.python.org/issue?@action=redirect&bpo=42012]: Add wsgiref.types, containing WSGI-specific types for static type checking.

• bpo-47227 [https://bugs.python.org/issue?@action=redirect&bpo=47227]: Suppress expression chaining for more re parsing errors.

• bpo-47211 [https://bugs.python.org/issue?@action=redirect&bpo=47211]: Remove undocumented and never working function re.template() and flag re.TEMPLATE. This was later reverted in 3.11.0b2 and deprecated instead.

• bpo-47135 [https://bugs.python.org/issue?@action=redirect&bpo=47135]: decimal.localcontext() now accepts context attributes via keyword arguments

• bpo-43323 [https://bugs.python.org/issue?@action=redirect&bpo=43323]: Fix errors in the email module if the charset itself contains undecodable/unencodable characters.

• bpo-46841 [https://bugs.python.org/issue?@action=redirect&bpo=46841]: Disassembly of quickened code.

• bpo-46681 [https://bugs.python.org/issue?@action=redirect&bpo=46681]: Forward gzip.compress() compresslevel to zlib.

• bpo-45100 [https://bugs.python.org/issue?@action=redirect&bpo=45100]: Add typing.get_overloads() and typing.clear_overloads(). Patch by Jelle Zijlstra.

• bpo-44807 [https://bugs.python.org/issue?@action=redirect&bpo=44807]: typing.Protocol no longer silently replaces __init__() methods defined on subclasses. Patch by Adrian Garcia Badaracco.

• bpo-46787 [https://bugs.python.org/issue?@action=redirect&bpo=46787]: Fix concurrent.futures.ProcessPoolExecutor exception memory leak

• bpo-46720 [https://bugs.python.org/issue?@action=redirect&bpo=46720]: Add support for pathlike objects to multiprocessing.set_executable() for Windows to be on a par with Unix-like systems. Patch by Géry Ogam.

• bpo-46696 [https://bugs.python.org/issue?@action=redirect&bpo=46696]: Add SO_INCOMING_CPU constant to socket.

• bpo-46053 [https://bugs.python.org/issue?@action=redirect&bpo=46053]: Fix OSS audio support on NetBSD.

• bpo-45639 [https://bugs.python.org/issue?@action=redirect&bpo=45639]: image/avif and image/webp were added to mimetypes.

• bpo-46285 [https://bugs.python.org/issue?@action=redirect&bpo=46285]: Add commandline option -p/--protocol to module http.server which specifies the HTTP version to which the server is conformant (HTTP/1.1 conformant servers can now be run from the commandline interface of module http.server). Patch by Géry Ogam.

• bpo-44791 [https://bugs.python.org/issue?@action=redirect&bpo=44791]: Accept ellipsis as the last argument of typing.Concatenate.

• bpo-46547 [https://bugs.python.org/issue?@action=redirect&bpo=46547]: Remove variables leaking into pydoc.Helper class namespace.

• bpo-46415 [https://bugs.python.org/issue?@action=redirect&bpo=46415]: Fix ipaddress.ip_{address,interface,network} raising TypeError instead of ValueError if given invalid tuple as address parameter.

• bpo-46075 [https://bugs.python.org/issue?@action=redirect&bpo=46075]: CookieJar with DefaultCookiePolicy now can process cookies from localhost with domain=localhost explicitly specified in Set-Cookie header.

• bpo-45995 [https://bugs.python.org/issue?@action=redirect&bpo=45995]: Add a "z" option to the string formatting specification that coerces negative zero floating-point values to positive zero after rounding to the format precision. Contributed by John Belmonte.

• bpo-26175 [https://bugs.python.org/issue?@action=redirect&bpo=26175]: Fully implement the io.BufferedIOBase or io.TextIOBase interface for tempfile.SpooledTemporaryFile objects. This lets them work correctly with higher-level layers (like compression modules). Patch by Carey Metcalfe.

• bpo-45138 [https://bugs.python.org/issue?@action=redirect&bpo=45138]: Fix a regression in the sqlite3 trace callback where bound parameters were not expanded in the passed statement string. The regression was introduced in Python 3.10 by bpo-40318 [https://bugs.python.org/issue?@action=redirect&bpo=40318]. Patch by Erlend E. Aasland.

• bpo-44863 [https://bugs.python.org/issue?@action=redirect&bpo=44863]: Allow TypedDict subclasses to also include Generic as a base class in class based syntax. Thereby allowing the user to define a generic TypedDict, just like a user-defined generic but with TypedDict semantics.

• bpo-44587 [https://bugs.python.org/issue?@action=redirect&bpo=44587]: Fix BooleanOptionalAction to not automatically add a default string. If a default string is desired, use a formatter to add it.

• bpo-43827 [https://bugs.python.org/issue?@action=redirect&bpo=43827]: All positional-or-keyword parameters to ABCMeta._new_ are now positional-only to avoid conflicts with keyword arguments to be passed to __init_subclass__().

• bpo-43218 [https://bugs.python.org/issue?@action=redirect&bpo=43218]: Prevent creation of a venv whose path contains the PATH separator. This could affect the usage of the activate script. Patch by Dustin Rodrigues.

• bpo-38435 [https://bugs.python.org/issue?@action=redirect&bpo=38435]: Add a process_group parameter to subprocess.Popen to help move more things off of the unsafe preexec_fn parameter.

• bpo-42066 [https://bugs.python.org/issue?@action=redirect&bpo=42066]: Fix cookies getting sorted in CookieJar.__iter__() which is an extra behavior and not mentioned in RFC 2965 or Netscape cookie protocol. Now the cookies in CookieJar follows the order of the Set-Cookie header. Patch by Iman Kermani.

• bpo-40617 [https://bugs.python.org/issue?@action=redirect&bpo=40617]: Add create_window_function() to sqlite3.Connection for creating aggregate window functions. Patch by Erlend E. Aasland.

• bpo-40676 [https://bugs.python.org/issue?@action=redirect&bpo=40676]: Convert csv to use Argument Clinic for csv.field_size_limit(), csv.get_dialect(), csv.unregister_dialect() and csv.list_dialects().

• bpo-39716 [https://bugs.python.org/issue?@action=redirect&bpo=39716]: Raise an ArgumentError when the same subparser name is added twice to an argparse.ArgumentParser. This is consistent with the (default) behavior when the same option string is added twice to an ArgumentParser.

• bpo-36073 [https://bugs.python.org/issue?@action=redirect&bpo=36073]: Raise ProgrammingError instead of segfaulting on recursive usage of cursors in sqlite3 converters. Patch by Sergey Fedoseev.

• bpo-34975 [https://bugs.python.org/issue?@action=redirect&bpo=34975]: Adds a start_tls() method to StreamWriter, which upgrades the connection with TLS using the given SSLContext.

• bpo-22276 [https://bugs.python.org/issue?@action=redirect&bpo=22276]: Path methods glob() and rglob() return only directories if pattern ends with a pathname components separator (/ or sep). Patch by Eisuke Kawashima.

• bpo-24905 [https://bugs.python.org/issue?@action=redirect&bpo=24905]: Add blobopen() to sqlite3.Connection. sqlite3.Blob allows incremental I/O operations on blobs. Patch by Aviv Palivoda and Erlend E. Aasland.

文档

• gh-91888 [https://github.com/python/cpython/issues/91888]: Add a new gh role to the documentation to link to GitHub issues.

• gh-91783 [https://github.com/python/cpython/issues/91783]: Document security issues concerning the use of the function shutil.unpack_archive()

• gh-91547 [https://github.com/python/cpython/issues/91547]: Remove "Undocumented modules" page.

• gh-91298 [https://github.com/python/cpython/issues/91298]: In importlib.resources.abc, refined the documentation of the Traversable Protocol, applying changes from importlib_resources 5.7.1.

• bpo-44347 [https://bugs.python.org/issue?@action=redirect&bpo=44347]: Clarify the meaning of dirs_exist_ok, a kwarg of shutil.copytree().

• bpo-36329 [https://bugs.python.org/issue?@action=redirect&bpo=36329]: Remove 'make -C Doc serve' in favour of 'make -C Doc htmlview'

• bpo-47189 [https://bugs.python.org/issue?@action=redirect&bpo=47189]: Add a What's New in Python 3.11 entry for the Faster CPython project. Documentation by Ken Jin and Kumar Aditya.

• bpo-38668 [https://bugs.python.org/issue?@action=redirect&bpo=38668]: Update the introduction to documentation for os.path to remove warnings that became irrelevant after the implementations of PEP 383 [https://peps.python.org/pep-0383/] and PEP 529 [https://peps.python.org/pep-0529/].

• bpo-47115 [https://bugs.python.org/issue?@action=redirect&bpo=47115]: The documentation now lists which members of C structs are part of the Limited API/Stable ABI.

• bpo-46962 [https://bugs.python.org/issue?@action=redirect&bpo=46962]: All docstrings in code snippets are now wrapped into PyDoc_STR to follow the guideline of PEP 7's Documentation Strings paragraph [https://peps.python.org/pep-0007/#documentation-strings]. Patch by Oleg Iarygin.

• bpo-26792 [https://bugs.python.org/issue?@action=redirect&bpo=26792]: Improve the docstrings of runpy.run_module() and runpy.run_path(). Original patch by Andrew Brezovsky.

测试

• gh-92169 [https://github.com/python/cpython/issues/92169]: Use warnings_helper.import_deprecated() to import deprecated modules uniformly in tests. Patch by Hugo van Kemenade.

• gh-84461 [https://github.com/python/cpython/issues/84461]: When multiprocessing is enabled, libregrtest can now use a Python executable other than sys.executable via the --python flag.

• gh-91904 [https://github.com/python/cpython/issues/91904]: Fix initialization of PYTHONREGRTEST_UNICODE_GUARD which prevented running regression tests on non-UTF-8 locale.

• gh-91752 [https://github.com/python/cpython/issues/91752]: Added @requires_zlib to test.test_tools.test_freeze.TestFreeze.

• gh-91607 [https://github.com/python/cpython/issues/91607]: Fix test_concurrent_futures to test the correct multiprocessing start method context in several cases where the test logic mixed this up.

• bpo-40280 [https://bugs.python.org/issue?@action=redirect&bpo=40280]: Threading tests are now skipped on WASM targets without pthread support.

• bpo-47109 [https://bugs.python.org/issue?@action=redirect&bpo=47109]: Test for ctypes.macholib.dyld, ctypes.macholib.dylib, and ctypes.macholib.framework are brought from manual pre-unittest times to ctypes.test location and structure. Patch by Oleg Iarygin.

• bpo-29890 [https://bugs.python.org/issue?@action=redirect&bpo=29890]: Add tests for ipaddress.IPv4Interface and ipaddress.IPv6Interface construction with tuple arguments. Original patch and tests by louisom.

构建

• gh-89452 [https://github.com/python/cpython/issues/89452]: gdbm-compat is now preferred over ndbm if both are available on the system. This allows avoiding the problematic ndbm.h on macOS.

• gh-91731 [https://github.com/python/cpython/issues/91731]: Python is now built with -std=c11 compiler option, rather than -std=c99. Patch by Victor Stinner.

• bpo-47152 [https://bugs.python.org/issue?@action=redirect&bpo=47152]: Add script and make target for generating sre_constants.h.

• bpo-47103 [https://bugs.python.org/issue?@action=redirect&bpo=47103]: Windows PGInstrument builds now copy a required DLL into the output directory, making it easier to run the profile stage of a PGO build.

Windows

• bpo-46907 [https://bugs.python.org/issue?@action=redirect&bpo=46907]: Update Windows installer to use SQLite 3.38.3.

• bpo-47239 [https://bugs.python.org/issue?@action=redirect&bpo=47239]: Fixed —list and —list-paths output for 适用于Windows的Python启动器 when used in an active virtual environment.

• bpo-46907 [https://bugs.python.org/issue?@action=redirect&bpo=46907]: Update Windows installer to use SQLite 3.38.2.

• bpo-46785 [https://bugs.python.org/issue?@action=redirect&bpo=46785]: Fix race condition between os.stat() and unlinking a file on Windows, by using errors codes returned by FindFirstFileW() when appropriate in win32_xstat_impl.

• bpo-40859 [https://bugs.python.org/issue?@action=redirect&bpo=40859]: Update Windows build to use xz-5.2.5

macOS

• bpo-46907 [https://bugs.python.org/issue?@action=redirect&bpo=46907]: Update macOS installer to SQLite 3.38.4.

工具/示例

• gh-91583 [https://github.com/python/cpython/issues/91583]: Fix regression in the code generated by Argument Clinic for functions with the defining_class parameter.

• gh-91575 [https://github.com/python/cpython/issues/91575]: Add script Tools/scripts/generate_re_casefix.py and the make target regen-re for generating additional data for case-insensitive matching according to the current Unicode version.

• gh-91551 [https://github.com/python/cpython/issues/91551]: Remove the ancient Pynche color editor. It has moved to https://gitlab.com/warsaw/pynche

C API

• gh-88279 [https://github.com/python/cpython/issues/88279]: Deprecate the C functions: PySys_SetArgv(), PySys_SetArgvEx(), PySys_SetPath(). Patch by Victor Stinner.

• gh-92154 [https://github.com/python/cpython/issues/92154]: Added the PyCode_GetCode() function. This function does the equivalent of the Python code getattr(code_object, 'co_code').

• gh-92173 [https://github.com/python/cpython/issues/92173]: Fix the closure argument to PyEval_EvalCodeEx().

• gh-91320 [https://github.com/python/cpython/issues/91320]: Fix C++ compiler warnings about "old-style cast" (g++ -Wold-style-cast) in the Python C API. Use C++ reinterpret_cast<> and static_cast<> casts when the Python C API is used in C++. Patch by Victor Stinner.

• gh-80527 [https://github.com/python/cpython/issues/80527]: Mark functions as deprecated by PEP 623 [https://peps.python.org/pep-0623/]: PyUnicode_AS_DATA(), PyUnicode_AS_UNICODE(), PyUnicode_GET_DATA_SIZE(), PyUnicode_GET_SIZE(). Patch by Victor Stinner.

• gh-91768 [https://github.com/python/cpython/issues/91768]: Py_REFCNT(), Py_TYPE(), Py_SIZE() and Py_IS_TYPE() functions argument type is now PyObject*, rather than const PyObject*. Patch by Victor Stinner.

• gh-91020 [https://github.com/python/cpython/issues/91020]: Add PyBytes_Type.tp_alloc to initialize PyBytesObject.ob_shash for bytes subclasses.

• bpo-40421 [https://bugs.python.org/issue?@action=redirect&bpo=40421]: Add PyFrame_GetLasti C-API function to access frame object's f_lasti attribute safely from C code.

• bpo-35134 [https://bugs.python.org/issue?@action=redirect&bpo=35134]: Remove the Include/code.h header file. C extensions should only include the main header file. Patch by Victor Stinner.

• bpo-47169 [https://bugs.python.org/issue?@action=redirect&bpo=47169]: PyOS_CheckStack() is now exported in the Stable ABI on Windows.

• bpo-47169 [https://bugs.python.org/issue?@action=redirect&bpo=47169]: PyThreadgetthread_native_id() is excluded from the stable ABI on platforms where it doesn't exist (like Solaris).

• bpo-46343 [https://bugs.python.org/issue?@action=redirect&bpo=46343]: Added PyErr_GetHandledException() and PyErr_SetHandledException() as simpler alternatives to PyErr_GetExcInfo() and PyErr_SetExcInfo().

They are included in the stable ABI.

Python 3.11.0 alpha 7

Release date: 2022-04-05

核心与内置函数

• bpo-47212 [https://bugs.python.org/issue?@action=redirect&bpo=47212]: Raise IndentationError instead of SyntaxError for a bare except with no following indent. Improve SyntaxError locations for an unparenthesized generator used as arguments. Patch by Matthieu Dartiailh.

• bpo-47186 [https://bugs.python.org/issue?@action=redirect&bpo=47186]: Replace JUMP_IF_NOT_EG_MATCH by CHECK_EG_MATCH + jump.

• bpo-47176 [https://bugs.python.org/issue?@action=redirect&bpo=47176]: Emscripten builds cannot handle signals in the usual way due to platform limitations. Python can now handle signals. To use, set Module.Py_EmscriptenSignalBuffer to be a single byte SharedArrayBuffer and set Py_EMSCRIPTEN_SIGNAL_HANDLING to 1. Writing a number into the SharedArrayBuffer will cause the corresponding signal to be raised into the Python thread.

• bpo-47186 [https://bugs.python.org/issue?@action=redirect&bpo=47186]: Replace JUMP_IF_NOT_EXC_MATCH by CHECK_EXC_MATCH + jump.

• bpo-47120 [https://bugs.python.org/issue?@action=redirect&bpo=47120]: Replace the absolute jump opcode JUMP_NO_INTERRUPT by the relative JUMP_BACKWARD_NO_INTERRUPT.

• bpo-46841 [https://bugs.python.org/issue?@action=redirect&bpo=46841]: Avoid unnecessary allocations when comparing code objects.

• bpo-47182 [https://bugs.python.org/issue?@action=redirect&bpo=47182]: Fix a crash when using a named unicode character like "\N{digit nine}" after the main interpreter has been initialized a second time.

• bpo-47162 [https://bugs.python.org/issue?@action=redirect&bpo=47162]: WebAssembly cannot deal with bad function pointer casts (different count or types of arguments). Python can now use call trampolines to mitigate the problem. Define PY_CALL_TRAMPOLINE to enable call trampolines.

• bpo-46775 [https://bugs.python.org/issue?@action=redirect&bpo=46775]: Some Windows system error codes(>= 10000) are now mapped into the correct errno and may now raise a subclass of OSError. Patch by Donghee Na.

• bpo-47129 [https://bugs.python.org/issue?@action=redirect&bpo=47129]: Improve error messages in fstring syntax errors concerning empty expressions.

• bpo-47117 [https://bugs.python.org/issue?@action=redirect&bpo=47117]: Fix a crash if we fail to decode characters in interactive mode if the tokenizer buffers are uninitialized. Patch by Pablo Galindo.

• bpo-47127 [https://bugs.python.org/issue?@action=redirect&bpo=47127]: Speed up calls to c functions with keyword arguments by 25% with specialization. Patch by Kumar Aditya.

• bpo-47120 [https://bugs.python.org/issue?@action=redirect&bpo=47120]: Replaced JUMP_ABSOLUTE by the relative jump JUMP_BACKWARD.

• bpo-42197 [https://bugs.python.org/issue?@action=redirect&bpo=42197]: PyFrame_FastToLocalsWithError() and PyFrame_LocalsToFast() are no longer called during profiling nor tracing. C code can access the f_locals attribute of PyFrameObject by calling PyFrame_GetLocals().

• bpo-47070 [https://bugs.python.org/issue?@action=redirect&bpo=47070]: Improve performance of array_inplace_repeat by reducing the number of invocations of memcpy. Refactor the repeat and inplace repeat methods of array, bytes, bytearray and unicodeobject to use the common PyBytesRepeat.

• bpo-47053 [https://bugs.python.org/issue?@action=redirect&bpo=47053]: Reduce deoptimization in the specialized BINARY_OP_INPLACE_ADD_UNICODE opcode.

• bpo-47045 [https://bugs.python.org/issue?@action=redirect&bpo=47045]: Remove the f_state field from the _PyInterpreterFrame struct. Add the owner field to the _PyInterpreterFrame struct to make ownership explicit to simplify clearing and deallocing frames and generators.

• bpo-46968 [https://bugs.python.org/issue?@action=redirect&bpo=46968]: Check for the existence of the "sys/auxv.h" header in faulthandler to avoid compilation problems in systems where this header doesn't exist. Patch by Pablo Galindo

• bpo-46329 [https://bugs.python.org/issue?@action=redirect&bpo=46329]: Use low bit of LOAD_GLOBAL to indicate whether to push a NULL before the global. Helps streamline the call sequence a bit.

• bpo-46841 [https://bugs.python.org/issue?@action=redirect&bpo=46841]: Quicken bytecode inplace by storing it as part of the corresponding PyCodeObject.

• bpo-47012 [https://bugs.python.org/issue?@action=redirect&bpo=47012]: Speed up iteration of bytes and bytearray by 30%. Patch by Kumar Aditya.

• bpo-47009 [https://bugs.python.org/issue?@action=redirect&bpo=47009]: Improved the performance of list.append() and list comprehensions by optimizing for the common case, where no resize is needed. Patch by Dennis Sweeney.

• bpo-47005 [https://bugs.python.org/issue?@action=redirect&bpo=47005]: Improve performance of bytearray_repeat and bytearray_irepeat by reducing the number of invocations of memcpy.

• bpo-46829 [https://bugs.python.org/issue?@action=redirect&bpo=46829]: Deprecate passing a message into asyncio.Future.cancel() and asyncio.Task.cancel()

• bpo-46993 [https://bugs.python.org/issue?@action=redirect&bpo=46993]: Speed up bytearray creation from list and tuple by 40%. Patch by Kumar Aditya.

• bpo-39829 [https://bugs.python.org/issue?@action=redirect&bpo=39829]: Removed the __len__() call when initializing a list and moved initializing to list_extend. Patch by Jeremiah Pascual.

• bpo-46944 [https://bugs.python.org/issue?@action=redirect&bpo=46944]: Speed up throwing exception in generator with METH_FASTCALL calling convention. Patch by Kumar Aditya.

• bpo-46841 [https://bugs.python.org/issue?@action=redirect&bpo=46841]: Modify STORE_SUBSCR to use an inline cache entry (rather than its oparg) as an adaptive counter.

• bpo-46841 [https://bugs.python.org/issue?@action=redirect&bpo=46841]: Use inline caching for PRECALL and CALL, and remove the internal machinery for managing the (now unused) non-inline caches.

• bpo-46881 [https://bugs.python.org/issue?@action=redirect&bpo=46881]: Statically allocate and initialize the latin1 characters.

• bpo-46838 [https://bugs.python.org/issue?@action=redirect&bpo=46838]: Improve syntax errors for incorrect function definitions. Patch by Pablo Galindo

• bpo-43721 [https://bugs.python.org/issue?@action=redirect&bpo=43721]: Fix docstrings of getter, setter, and deleter to clarify that they create a new copy of the property.

• bpo-43224 [https://bugs.python.org/issue?@action=redirect&bpo=43224]: Make grammar changes required for PEP 646.

库

• bpo-47208 [https://bugs.python.org/issue?@action=redirect&bpo=47208]: Allow vendors to override CTYPES_MAX_ARGCOUNT.

• bpo-23689 [https://bugs.python.org/issue?@action=redirect&bpo=23689]: re module: fix memory leak when a match is terminated by a signal or memory allocation failure. Patch by Ma Lin.

• bpo-47167 [https://bugs.python.org/issue?@action=redirect&bpo=47167]: Allow overriding a future compliance check in asyncio.Task.

• bpo-47151 [https://bugs.python.org/issue?@action=redirect&bpo=47151]: When subprocess tries to use vfork, it now falls back to fork if vfork returns an error. This allows use in situations where vfork isn't allowed by the OS kernel.

• bpo-47152 [https://bugs.python.org/issue?@action=redirect&bpo=47152]: Convert the re module into a package. Deprecate modules sre_compile, sre_constants and sre_parse.

• bpo-4833 [https://bugs.python.org/issue?@action=redirect&bpo=4833]: Add ZipFile.mkdir()

• bpo-27929 [https://bugs.python.org/issue?@action=redirect&bpo=27929]: Fix asyncio.loop.sock_connect() to only resolve names for socket.AF_INET or socket.AF_INET6 families. Resolution may not make sense for other families, like socket.AF_BLUETOOTH and socket.AF_UNIX.

• bpo-14265 [https://bugs.python.org/issue?@action=redirect&bpo=14265]: Adds the fully qualified test name to unittest output

• bpo-47061 [https://bugs.python.org/issue?@action=redirect&bpo=47061]: Deprecate the aifc module.

• bpo-39622 [https://bugs.python.org/issue?@action=redirect&bpo=39622]: Handle Ctrl+C in asyncio programs to interrupt the main task.

• bpo-47101 [https://bugs.python.org/issue?@action=redirect&bpo=47101]: hashlib.algorithms_available now lists only algorithms that are provided by activated crypto providers on OpenSSL 3.0. Legacy algorithms are not listed unless the legacy provider has been loaded into the default OSSL context.

• bpo-47099 [https://bugs.python.org/issue?@action=redirect&bpo=47099]: All URLError exception messages raised in urllib.request.URLopener now contain a colon between ftp error and the rest of the message. Previously, open_ftp() missed the colon. Patch by Oleg Iarygin.

• bpo-47099 [https://bugs.python.org/issue?@action=redirect&bpo=47099]: Exception chaining is changed from Exception.with_traceback()/sys.exc_info() to PEP 3134 [https://peps.python.org/pep-3134/]. Patch by Oleg Iarygin.

• bpo-47095 [https://bugs.python.org/issue?@action=redirect&bpo=47095]: hashlib's internal _blake2 module now prefers libb2 from https://www.blake2.net/ over Python's vendored copy of blake2.

• bpo-47098 [https://bugs.python.org/issue?@action=redirect&bpo=47098]: The Keccak Code Package for hashlib's internal _sha3 module has been replaced with tiny_sha3. The module is used as fallback when Python is built without OpenSSL.

• bpo-47088 [https://bugs.python.org/issue?@action=redirect&bpo=47088]: Implement typing.LiteralString, part of PEP 675 [https://peps.python.org/pep-0675/]. Patch by Jelle Zijlstra.

• bpo-42885 [https://bugs.python.org/issue?@action=redirect&bpo=42885]: Optimize re.search(), re.split(), re.findall(), re.finditer() and re.sub() for regular expressions starting with \A or ^.

• bpo-23691 [https://bugs.python.org/issue?@action=redirect&bpo=23691]: Protect the re.finditer() iterator from reentering.

• bpo-47067 [https://bugs.python.org/issue?@action=redirect&bpo=47067]: Optimize calling GenericAlias objects by using PEP 590 [https://peps.python.org/pep-0590/] vectorcall and by replacing PyObject_SetAttrString with PyObject_SetAttr.

• bpo-28080 [https://bugs.python.org/issue?@action=redirect&bpo=28080]: Add the metadata_encoding parameter in the zipfile.ZipFile constructor and the --metadata-encoding option in the zipfile CLI to allow reading zipfiles using non-standard codecs to encode the filenames within the archive.

• bpo-47000 [https://bugs.python.org/issue?@action=redirect&bpo=47000]: Make io.text_encoding() returns "utf-8" when UTF-8 mode is enabled.

• bpo-42369 [https://bugs.python.org/issue?@action=redirect&bpo=42369]: Fix thread safety of zipfile._SharedFile.tell() to avoid a "zipfile.BadZipFile: Bad CRC-32 for file" exception when reading a ZipFile from multiple threads.

• bpo-38256 [https://bugs.python.org/issue?@action=redirect&bpo=38256]: Fix binascii.crc32() when it is compiled to use zlib'c crc32 to work properly on inputs 4+GiB in length instead of returning the wrong result. The workaround prior to this was to always feed the function data in increments smaller than 4GiB or to just call the zlib module function.

We also have binascii.crc32() release the GIL when computing on larger inputs as zlib.crc32() and hashlib do.

This also boosts performance on Windows as it now uses the zlib crc32 implementation for binascii.crc32() for a 2-3x speedup.

That the stdlib has a crc32 API in two modules is a known historical oddity. This moves us closer to a single implementation behind them.

• bpo-47066 [https://bugs.python.org/issue?@action=redirect&bpo=47066]: Global inline flags (e.g. (?i)) can now only be used at the start of the regular expressions. Using them not at the start of expression was deprecated since Python 3.6.

• bpo-39394 [https://bugs.python.org/issue?@action=redirect&bpo=39394]: A warning about inline flags not at the start of the regular expression now contains the position of the flag.

• bpo-433030 [https://bugs.python.org/issue?@action=redirect&bpo=433030]: Add support of atomic grouping ((?>…)) and possessive quantifiers (*+, ++, ?+, {m,n}+) in regular expressions.

• bpo-47062 [https://bugs.python.org/issue?@action=redirect&bpo=47062]: Implement asyncio.Runner context manager.

• bpo-46382 [https://bugs.python.org/issue?@action=redirect&bpo=46382]: dataclass() slots=True now correctly omits slots already defined in base classes. Patch by Arie Bovenberg.

• bpo-47057 [https://bugs.python.org/issue?@action=redirect&bpo=47057]: Use FASTCALL convention for FutureIter.throw()

• bpo-47061 [https://bugs.python.org/issue?@action=redirect&bpo=47061]: Deprecate the various modules listed by PEP 594 [https://peps.python.org/pep-0594/]: aifc, asynchat, asyncore, audioop, cgi, cgitb, chunk, crypt, imghdr, msilib, nntplib, nis, ossaudiodev, pipes, smtpd, sndhdr, spwd, sunau, telnetlib, uu, xdrlib

• bpo-34790 [https://bugs.python.org/issue?@action=redirect&bpo=34790]: Remove passing coroutine objects to asyncio.wait().

• bpo-47039 [https://bugs.python.org/issue?@action=redirect&bpo=47039]: Normalize repr() of asyncio future and task objects.

• bpo-2604 [https://bugs.python.org/issue?@action=redirect&bpo=2604]: Fix bug where doctests using globals would fail when run multiple times.

• bpo-45150 [https://bugs.python.org/issue?@action=redirect&bpo=45150]: Add hashlib.file_digest() helper for efficient hashing of file object.

• bpo-34861 [https://bugs.python.org/issue?@action=redirect&bpo=34861]: Made cumtime the default sorting key for cProfile

• bpo-45997 [https://bugs.python.org/issue?@action=redirect&bpo=45997]: Fix asyncio.Semaphore re-aquiring FIFO order.

• bpo-47022 [https://bugs.python.org/issue?@action=redirect&bpo=47022]: The asynchat, asyncore and smtpd modules have been deprecated since at least Python 3.6. Their documentation and deprecation warnings and have now been updated to note they will removed in Python 3.12 ( PEP 594 [https://peps.python.org/pep-0594/]).

• bpo-43253 [https://bugs.python.org/issue?@action=redirect&bpo=43253]: Fix a crash when closing transports where the underlying socket handle is already invalid on the Proactor event loop.

• bpo-40280 [https://bugs.python.org/issue?@action=redirect&bpo=40280]: select.select() now passes NULL to select for each empty fdset.

• bpo-47004 [https://bugs.python.org/issue?@action=redirect&bpo=47004]: Apply bugfixes from importlib_metadata 4.11.3, including bugfix for EntryPoint.extras, which was returning match objects and not the extras strings.

• bpo-46998 [https://bugs.python.org/issue?@action=redirect&bpo=46998]: Allow subclassing of typing.Any. Patch by Shantanu Jain.

• bpo-46995 [https://bugs.python.org/issue?@action=redirect&bpo=46995]: Deprecate missing asyncio.Task.set_name() for third-party task implementations, schedule making it mandatory in Python 3.13.

• bpo-46994 [https://bugs.python.org/issue?@action=redirect&bpo=46994]: Accept explicit contextvars.Context in asyncio.create_task() and asyncio.loop.create_task().

• bpo-46981 [https://bugs.python.org/issue?@action=redirect&bpo=46981]: typing.get_args(typing.Tuple[()]) now returns () instead of ((),).

• bpo-46968 [https://bugs.python.org/issue?@action=redirect&bpo=46968]: Add os.sysconf_names['SC_MINSIGSTKSZ'].

• bpo-46985 [https://bugs.python.org/issue?@action=redirect&bpo=46985]: Upgrade pip wheel bundled with ensurepip (pip 22.0.4)

• bpo-46968 [https://bugs.python.org/issue?@action=redirect&bpo=46968]: faulthandler: On Linux 5.14 and newer, dynamically determine size of signal handler stack size CPython allocates using getauxval(AT_MINSIGSTKSZ). This changes allows for Python extension's request to Linux kernel to use AMX_TILE instruction set on Sapphire Rapids Xeon processor to succeed, unblocking use of the ISA in frameworks.

• bpo-46917 [https://bugs.python.org/issue?@action=redirect&bpo=46917]: The math.nan value is now always available. Patch by Victor Stinner.

• bpo-46955 [https://bugs.python.org/issue?@action=redirect&bpo=46955]: Expose asyncio.base_events.Server as asyncio.Server. Patch by Stefan Zabka.

• bpo-23325 [https://bugs.python.org/issue?@action=redirect&bpo=23325]: The signal module no longer assumes that SIG_IGN and SIG_DFL are small int singletons.

• bpo-46932 [https://bugs.python.org/issue?@action=redirect&bpo=46932]: Update bundled libexpat to 2.4.7

• bpo-46933 [https://bugs.python.org/issue?@action=redirect&bpo=46933]: The pwd module is now optional. os.path.expanduser() returns the path when the pwd module is not available.

• bpo-40059 [https://bugs.python.org/issue?@action=redirect&bpo=40059]: PEP 680 [https://peps.python.org/pep-0680/], the tomllib module. Adds support for parsing TOML.

• bpo-464471 [https://bugs.python.org/issue?@action=redirect&bpo=464471]: asyncio.timeout() and asyncio.timeout_at() context managers added. Patch by Tin Tvrtković and Andrew Svetlov.

• bpo-46805 [https://bugs.python.org/issue?@action=redirect&bpo=46805]: Added raw datagram socket functions for asyncio: sock_sendto(), sock_recvfrom() and sock_recvfrom_into().

• bpo-46644 [https://bugs.python.org/issue?@action=redirect&bpo=46644]: No longer require valid typeforms to be callable. This allows typing.Annotated to wrap typing.ParamSpecArgs and dataclasses.InitVar. Patch by Gregory Beauregard.

• bpo-46581 [https://bugs.python.org/issue?@action=redirect&bpo=46581]: Brings ParamSpec propagation for GenericAlias in line with Concatenate (and others).

• bpo-45413 [https://bugs.python.org/issue?@action=redirect&bpo=45413]: Define posix_venv and nt_venv sysconfig installation schemes to be used for bootstrapping new virtual environments. Add venv sysconfig installation scheme to get the appropriate one of the above. The schemes are identical to the pre-existing posix_prefix and nt install schemes. The venv module now uses the venv scheme to create new virtual environments instead of hardcoding the paths depending only on the platform. Downstream Python distributors customizing the posix_prefix or nt install scheme in a way that is not compatible with the install scheme used in virtual environments are encouraged not to customize the venv schemes. When Python itself runs in a virtual environment, sysconfig.get_default_scheme() and sysconfig.get_preferred_scheme() with key="prefix" returns venv.

• bpo-43224 [https://bugs.python.org/issue?@action=redirect&bpo=43224]: Implement support for PEP 646 in typing.py.

• bpo-43224 [https://bugs.python.org/issue?@action=redirect&bpo=43224]: Allow unpacking types.GenericAlias objects, e.g. *tuple[int, str].

• bpo-46557 [https://bugs.python.org/issue?@action=redirect&bpo=46557]: Warnings captured by the logging module are now logged without a format string to prevent systems that group logs by the msg argument from grouping captured warnings together.

• bpo-41370 [https://bugs.python.org/issue?@action=redirect&bpo=41370]: typing.get_type_hints() now supports evaluating strings as forward references in PEP 585 generic aliases.

• bpo-46607 [https://bugs.python.org/issue?@action=redirect&bpo=46607]: Add DeprecationWarning to LegacyInterpolation, deprecated in the docstring since Python 3.2. Will be removed in Python 3.13. Use BasicInterpolation or ExtendedInterpolation instead.

• bpo-26120 [https://bugs.python.org/issue?@action=redirect&bpo=26120]: pydoc now excludes future imports from the module's data items.

• bpo-46480 [https://bugs.python.org/issue?@action=redirect&bpo=46480]: Add typing.assert_type(). Patch by Jelle Zijlstra.

• bpo-46421 [https://bugs.python.org/issue?@action=redirect&bpo=46421]: Fix a unittest issue where if the command was invoked as python -m unittest and the filename(s) began with a dot (.), a ValueError is returned.

• bpo-46245 [https://bugs.python.org/issue?@action=redirect&bpo=46245]: Add optional parameter dir_fd in shutil.rmtree().

• bpo-22859 [https://bugs.python.org/issue?@action=redirect&bpo=22859]: unittest.TestProgram.usageExit() is marked as deprecated, to be removed in Python 3.13.

• bpo-46170 [https://bugs.python.org/issue?@action=redirect&bpo=46170]: Improve the error message when you try to subclass an instance of typing.NewType.

• bpo-40296 [https://bugs.python.org/issue?@action=redirect&bpo=40296]: Fix supporting generic aliases in pydoc.

• bpo-20392 [https://bugs.python.org/issue?@action=redirect&bpo=20392]: Fix inconsistency with uppercase file extensions in MimeTypes.guess_type(). Patch by Kumar Aditya.

• bpo-46030 [https://bugs.python.org/issue?@action=redirect&bpo=46030]: Add LOCAL_CREDS, LOCAL_CREDS_PERSISTENT and SCM_CREDS2 FreeBSD constants to the socket module.

• bpo-44439 [https://bugs.python.org/issue?@action=redirect&bpo=44439]: Fix .write() method of a member file in ZipFile, when the input data is an object that supports the buffer protocol, the file length may be wrong.

• bpo-45171 [https://bugs.python.org/issue?@action=redirect&bpo=45171]: Fix handling of the stacklevel argument to logging functions in the logging module so that it is consistent across all logging functions and, as advertised, similar to the stacklevel argument used in warn().

• bpo-24959 [https://bugs.python.org/issue?@action=redirect&bpo=24959]: Fix bug where unittest sometimes drops frames from tracebacks of exceptions raised in tests.

• bpo-44859 [https://bugs.python.org/issue?@action=redirect&bpo=44859]: Raise more accurate and PEP 249 [https://peps.python.org/pep-0249/] compatible exceptions in sqlite3.

  • Raise InterfaceError instead of ProgrammingError for SQLITE_MISUSE errors.

  • Don't overwrite BufferError with ValueError when conversion to BLOB fails.

  • Raise ProgrammingError instead of Warning if user tries to execute() more than one SQL statement.

  • Raise ProgrammingError instead of ValueError if an SQL query contains null characters.

• bpo-44493 [https://bugs.python.org/issue?@action=redirect&bpo=44493]: Add missing terminated NUL in sockaddr_un's length This was potentially observable when using non-abstract AF_UNIX datagram sockets to processes written in another programming language.

• bpo-41930 [https://bugs.python.org/issue?@action=redirect&bpo=41930]: Add serialize() and deserialize() support to sqlite3. Patch by Erlend E. Aasland.

• bpo-33178 [https://bugs.python.org/issue?@action=redirect&bpo=33178]: Added ctypes.BigEndianUnion and ctypes.LittleEndianUnion classes, as originally documented in the library docs but not yet implemented.

• bpo-43352 [https://bugs.python.org/issue?@action=redirect&bpo=43352]: Add an Barrier object in synchronization primitives of asyncio Lib in order to be consistent with Barrier from threading and multiprocessing libs*

• bpo-35859 [https://bugs.python.org/issue?@action=redirect&bpo=35859]: re module, fix a few bugs about capturing group. In rare cases, capturing group gets an incorrect string. Patch by Ma Lin.

文档

• bpo-45099 [https://bugs.python.org/issue?@action=redirect&bpo=45099]: Document internal asyncio API.

• bpo-47126 [https://bugs.python.org/issue?@action=redirect&bpo=47126]: Update PEP URLs to PEP 676 [https://peps.python.org/pep-0676/]'s new canonical form.

• bpo-47040 [https://bugs.python.org/issue?@action=redirect&bpo=47040]: Clarified the old Python versions compatibility note of binascii.crc32() / zlib.adler32() / zlib.crc32() functions.

• bpo-46033 [https://bugs.python.org/issue?@action=redirect&bpo=46033]: Clarify for statement execution in its doc.

• bpo-45790 [https://bugs.python.org/issue?@action=redirect&bpo=45790]: Adjust inaccurate phrasing in 自定义扩展类型：教程 about the ob_base field and the macros used to access its contents.

• bpo-42340 [https://bugs.python.org/issue?@action=redirect&bpo=42340]: Document that in some circumstances KeyboardInterrupt may cause the code to enter an inconsistent state. Provided a sample workaround to avoid it if needed.

• bpo-41233 [https://bugs.python.org/issue?@action=redirect&bpo=41233]: Link the errnos referenced in Doc/library/exceptions.rst to their respective section in Doc/library/errno.rst, and vice versa. Previously this was only done for EINTR and InterruptedError. Patch by Yan "yyyyyyyan" Orestes.

测试

• bpo-47205 [https://bugs.python.org/issue?@action=redirect&bpo=47205]: Skip test for sched_getaffinity() and sched_setaffinity() error case on FreeBSD.

• bpo-46126 [https://bugs.python.org/issue?@action=redirect&bpo=46126]: Restore 'descriptions' when running tests internally.

• bpo-47104 [https://bugs.python.org/issue?@action=redirect&bpo=47104]: Rewrite asyncio.to_thread() tests to use unittest.IsolatedAsyncioTestCase.

• bpo-40280 [https://bugs.python.org/issue?@action=redirect&bpo=40280]: The test suite is now passing on the Emscripten platform. All fork, socket, and subprocess-based tests are skipped.

• bpo-47037 [https://bugs.python.org/issue?@action=redirect&bpo=47037]: Skip strftime("%4Y") feature test on Windows. It can cause an assertion error in debug builds.

• bpo-46587 [https://bugs.python.org/issue?@action=redirect&bpo=46587]: Skip tests if platform's strftime does not support non-portable glibc extensions.

• bpo-47015 [https://bugs.python.org/issue?@action=redirect&bpo=47015]: A test case for os.sendfile() is converted from deprecated asyncore (see PEP 594 [https://peps.python.org/pep-0594/]) to asyncio. Patch by Oleg Iarygin.

构建

• bpo-40280 [https://bugs.python.org/issue?@action=redirect&bpo=40280]: Add configure option --enable-wasm-dynamic-linking to enable dlopen and MAIN_MODULE / SIDE_MODULE on wasm32-emscripten.

• bpo-46023 [https://bugs.python.org/issue?@action=redirect&bpo=46023]: makesetup now detects and skips all duplicated module definitions. The first entry wins.

• bpo-40280 [https://bugs.python.org/issue?@action=redirect&bpo=40280]: Add SOABI wasm32-emscripten for Emscripten and wasm32-wasi for WASI on 32bit WASM as well as wasm64 counter parts.

• bpo-47032 [https://bugs.python.org/issue?@action=redirect&bpo=47032]: Ensure Windows install builds fail correctly with a non-zero exit code when part of the build fails.

• bpo-47024 [https://bugs.python.org/issue?@action=redirect&bpo=47024]: Update OpenSSL to 1.1.1n for macOS installers and all Windows builds.

• bpo-46996 [https://bugs.python.org/issue?@action=redirect&bpo=46996]: The tkinter package now requires Tcl/Tk version 8.5.12 or newer.

• bpo-46973 [https://bugs.python.org/issue?@action=redirect&bpo=46973]: Add regen-configure make target to regenerate configure script with Christian's container image quay.io/tiran/cpython_autoconf:269.

• bpo-46917 [https://bugs.python.org/issue?@action=redirect&bpo=46917]: Building Python now requires support of IEEE 754 floating-point numbers. Patch by Victor Stinner.

• bpo-45774 [https://bugs.python.org/issue?@action=redirect&bpo=45774]: configure now verifies that all SQLite C APIs needed for the sqlite3 extension module are found.