3.11.0a6 - Cpython — ContextQMD

.. bpo: 46940 .. date: 2022-03-06-20-16-13 .. nonce: _X47Hx .. release date: 2022-03-07 .. section: Core and Builtins

Avoid overriding :exc:AttributeError metadata information for nested attribute access calls. Patch by Pablo Galindo.

.. bpo: 46927 .. date: 2022-03-05-12-23-58 .. nonce: URbHBi .. section: Core and Builtins

Include the type's name in the error message for subscripting non-generic types.

.. bpo: 46921 .. date: 2022-03-05-00-43-22 .. nonce: tyuPeB .. section: Core and Builtins

Support vectorcall for super(). Patch by Ken Jin.

.. bpo: 46841 .. date: 2022-03-03-14-31-53 .. nonce: agf-3X .. section: Core and Builtins

Fix incorrect handling of inline cache entries when specializing :opcode:BINARY_OP.

.. bpo: 46841 .. date: 2022-03-03-12-36-15 .. nonce: apPev2 .. section: Core and Builtins

Use an oparg to simplify the construction of helpful error messages in :opcode:GET_AWAITABLE.

.. bpo: 46903 .. date: 2022-03-03-12-02-41 .. nonce: OzgaFZ .. section: Core and Builtins

Make sure that str subclasses can be used as attribute names for instances with virtual dictionaries. Fixes regression in 3.11alpha

.. bpo: 46841 .. date: 2022-03-03-10-46-13 .. nonce: 7CkuZx .. section: Core and Builtins

Add more detailed specialization failure stats for :opcode:COMPARE_OP followed by :opcode:EXTENDED_ARG.

.. bpo: 46891 .. date: 2022-03-02-15-04-08 .. nonce: aIAgTD .. section: Core and Builtins

Fix bug introduced during 3.11alpha where subclasses of types.ModuleType with __slots__ were not initialized correctly, resulting in an interpreter crash.

.. bpo: 46841 .. date: 2022-03-01-17-47-58 .. nonce: inYQlU .. section: Core and Builtins

Use inline caching for :opcode:LOAD_ATTR, :opcode:LOAD_METHOD, and :opcode:STORE_ATTR.

.. bpo: 46841 .. date: 2022-02-28-15-46-36 .. nonce: MDQoty .. section: Core and Builtins

Use inline cache for :opcode:BINARY_SUBSCR.

.. bpo: 46841 .. date: 2022-02-28-12-01-04 .. nonce: r60AMJ .. section: Core and Builtins

Use inline caching for :opcode:COMPARE_OP.

.. bpo: 46864 .. date: 2022-02-26-19-26-36 .. nonce: EmLgFp .. section: Core and Builtins

Deprecate PyBytesObject.ob_shash. It will be removed in Python 3.13.

.. bpo: 46841 .. date: 2022-02-25-15-18-40 .. nonce: tmLpgC .. section: Core and Builtins

Use inline caching for :opcode:UNPACK_SEQUENCE.

.. bpo: 46845 .. date: 2022-02-25-14-57-21 .. nonce: TUvaMG .. section: Core and Builtins

Reduces dict size by removing hash value from hash table when all inserted keys are Unicode. For example, sys.getsizeof(dict.fromkeys("abcdefg")) becomes 272 bytes from 352 bytes on 64bit platform.

.. bpo: 46841 .. date: 2022-02-25-13-18-18 .. nonce: 86QiQu .. section: Core and Builtins

Use inline cache for :opcode:LOAD_GLOBAL.

.. bpo: 46852 .. date: 2022-02-25-02-01-42 .. nonce: _3zg8D .. section: Core and Builtins

Rename the private undocumented float.__set_format__() method to float.__setformat__() to fix a typo introduced in Python 3.7. The method is only used by test_float. Patch by Victor Stinner.

.. bpo: 46852 .. date: 2022-02-25-01-42-45 .. nonce: nkRDvV .. section: Core and Builtins

Remove the undocumented private float.__set_format__() method, previously known as float.__setformat__() in Python 3.7. Its docstring said: "You probably don't want to use this function. It exists mainly to be used in Python's test suite." Patch by Victor Stinner.

.. bpo: 40116 .. date: 2022-02-24-16-34-17 .. nonce: AeVGG2 .. section: Core and Builtins

Fix regression that dict.update(other) may don't respect iterate order of other when other is key sharing dict.

.. bpo: 46712 .. date: 2022-02-24-07-50-43 .. nonce: pw7vQV .. section: Core and Builtins

Share global string identifiers in deep-frozen modules.

.. bpo: 46430 .. date: 2022-02-24-07-33-29 .. nonce: c91TAg .. section: Core and Builtins

Fix memory leak in interned strings of deep-frozen modules.

.. bpo: 46841 .. date: 2022-02-23-18-17-30 .. nonce: fns8HB .. section: Core and Builtins

Store :opcode:BINARY_OP caches inline using a new :opcode:CACHE instruction.

.. bpo: 45107 .. date: 2022-02-23-15-26-02 .. nonce: axcgHn .. section: Core and Builtins

Specialize LOAD_METHOD for instances with a dict.

.. bpo: 44337 .. date: 2022-02-22-17-19-45 .. nonce: XA-egu .. section: Core and Builtins

Reduce the memory usage of specialized :opcode:LOAD_ATTR and :opcode:STORE_ATTR instructions.

.. bpo: 46729 .. date: 2022-02-22-17-18-36 .. nonce: ZwGTFq .. section: Core and Builtins

Add number of sub-exceptions to :meth:BaseException.__str__.

.. bpo: 45885 .. date: 2022-02-22-15-48-32 .. nonce: W2vkaI .. section: Core and Builtins

Don't un-adapt :opcode:COMPARE_OP when collecting specialization stats.

.. bpo: 46329 .. date: 2022-02-22-14-03-56 .. nonce: RX_AzJ .. section: Core and Builtins

Fix specialization stats gathering for :opcode:!PRECALL instructions.

.. bpo: 46794 .. date: 2022-02-22-12-07-53 .. nonce: 6WvJ9o .. section: Library

Bump up the libexpat version into 2.4.6

.. bpo: 46823 .. date: 2022-02-22-05-14-25 .. nonce: z9NZC9 .. section: Core and Builtins

Implement a specialized combined opcode LOAD_FAST__LOAD_ATTR_INSTANCE_VALUE. Patch by Dennis Sweeney.

.. bpo: 46820 .. date: 2022-02-21-21-55-23 .. nonce: 4RfUZh .. section: Core and Builtins

Fix parsing a numeric literal immediately (without spaces) followed by "not in" keywords, like in 1not in x. Now the parser only emits a warning, not a syntax error.

.. bpo: 46329 .. date: 2022-02-21-10-29-20 .. nonce: cbkt7u .. section: Core and Builtins

Move KW_NAMES before PRECALL instruction in call sequence. Change operand of CALL to match PRECALL for easier specialization.

.. bpo: 46808 .. date: 2022-02-20-23-10-14 .. nonce: vouNSF .. section: Core and Builtins

Remove the NEXT_BLOCK macro from compile.c, and make the compiler automatically generate implicit blocks when they are needed.

.. bpo: 46329 .. date: 2022-02-16-13-15-16 .. nonce: 8aIuz9 .. section: Core and Builtins

Add PUSH_NULL instruction. This is used as a prefix when evaluating a callable, so that the stack has the same shape for methods and other calls. PRECALL_FUNCTION and PRECALL_METHOD are merged into a single PRECALL instruction.

There is no change in semantics.

.. bpo: 46762 .. date: 2022-02-15-20-26-46 .. nonce: 1H7vab .. section: Core and Builtins

Fix an assert failure in debug builds when a '<', '>', or '=' is the last character in an f-string that's missing a closing right brace.

.. bpo: 46730 .. date: 2022-02-14-21-04-43 .. nonce: rYJ1w5 .. section: Core and Builtins

Message of AttributeError caused by getting, setting or deleting a property without the corresponding function now mentions that the attribute is in fact a property and also specifies type of the class that it belongs to.

.. bpo: 46724 .. date: 2022-02-14-14-44-06 .. nonce: jym_K6 .. section: Core and Builtins

Make sure that all backwards jumps use the JUMP_ABSOLUTE instruction, rather than JUMP_FORWARD with an argument of (2**32)+offset.

.. bpo: 46732 .. date: 2022-02-12-11-16-40 .. nonce: 3Z_qxd .. section: Core and Builtins

Correct the docstring for the :meth:~object.__bool__ method. Patch by Jelle Zijlstra.

.. bpo: 46072 .. date: 2022-02-11-13-47-58 .. nonce: PDS6Ke .. section: Core and Builtins

Add more detailed specialization failure statistics for :opcode:BINARY_OP.

.. bpo: 46707 .. date: 2022-02-10-03-13-18 .. nonce: xeSEh0 .. section: Core and Builtins

Avoid potential exponential backtracking when producing some syntax errors involving lots of brackets. Patch by Pablo Galindo.

.. bpo: 46323 .. date: 2022-02-10-02-29-12 .. nonce: HK_cs0 .. section: Library

:mod:ctypes now allocates memory on the stack instead of on the heap to pass arguments while calling a Python callback function. Patch by Donghee Na.

.. bpo: 45923 .. date: 2022-02-09-20-21-43 .. nonce: tJ4gDX .. section: Core and Builtins

Add a quickened form of :opcode:RESUME that skips quickening checks.

.. bpo: 46702 .. date: 2022-02-09-16-36-11 .. nonce: LcaEuC .. section: Core and Builtins

Specialize :opcode:UNPACK_SEQUENCE for :class:tuple and :class:list unpackings.

.. bpo: 46072 .. date: 2022-02-07-14-38-54 .. nonce: 6ebLyN .. section: Core and Builtins

Opcode pair stats are now gathered with --enable-pystats. Defining DYNAMIC_EXECUTION_PROFILE or DXPAIRS no longer has any effect.

.. bpo: 46675 .. date: 2022-02-07-14-33-45 .. nonce: ZPbdMp .. section: Core and Builtins

Allow more than 16 items in a split dict before it is combined. The limit is now 254.

.. bpo: 40479 .. date: 2022-02-06-23-08-30 .. nonce: zED3Zu .. section: Library

Add a missing call to va_end() in Modules/_hashopenssl.c.

.. bpo: 46323 .. date: 2022-02-05-14-46-21 .. nonce: FC1OJg .. section: Library

Use :c:func:PyObject_Vectorcall while calling ctypes callback function. Patch by Donghee Na.

.. bpo: 46615 .. date: 2022-02-04-04-33-18 .. nonce: puArY9 .. section: Core and Builtins

When iterating over sets internally in setobject.c, acquire strong references to the resulting items from the set. This prevents crashes in corner-cases of various set operations where the set gets mutated.

.. bpo: 45828 .. date: 2022-01-27-14-20-18 .. nonce: kzk4fl .. section: Core and Builtins

The bytecode compiler now attempts to apply runtime stack manipulations at compile-time (whenever it is feasible to do so).

.. bpo: 30496 .. date: 2022-01-09-11-59-04 .. nonce: KvuuGT .. section: Core and Builtins

Fixed a minor portability issue in the implementation of :c:func:PyLong_FromLong, and added a fast path for single-digit integers to :c:func:PyLong_FromLongLong.

.. bpo: 25707 .. date: 2022-03-05-09-43-53 .. nonce: gTlclP .. section: Library

Fixed a file leak in :func:xml.etree.ElementTree.iterparse when the iterator is not exhausted. Patch by Jacob Walls.

.. bpo: 46877 .. date: 2022-03-03-06-58-52 .. nonce: BKgjpD .. section: Library

Export :func:unittest.doModuleCleanups in :mod:unittest. Patch by Kumar Aditya.

.. bpo: 46848 .. date: 2022-03-01-01-16-13 .. nonce: BB01Fr .. section: Library

For performance, use the optimized string-searching implementations from :meth:~bytes.find and :meth:~bytes.rfind for :meth:~mmap.find and :meth:~mmap.rfind.

.. bpo: 46736 .. date: 2022-02-24-01-49-38 .. nonce: NJcoWO .. section: Library

:class:~http.server.SimpleHTTPRequestHandler now uses HTML5 grammar. Patch by Donghee Na.

.. bpo: 44886 .. date: 2022-02-23-00-55-59 .. nonce: I40Mbr .. section: Library

Inherit asyncio proactor datagram transport from :class:asyncio.DatagramTransport.

.. bpo: 46827 .. date: 2022-02-22-15-08-30 .. nonce: hvj38S .. section: Library

Support UDP sockets in :meth:asyncio.loop.sock_connect for selector-based event loops. Patch by Thomas Grainger.

.. bpo: 46811 .. date: 2022-02-20-21-03-31 .. nonce: 8BxgdQ .. section: Library

Make test suite support Expat >=2.4.5

.. bpo: 46252 .. date: 2022-02-20-12-59-46 .. nonce: KG1SqA .. section: Library

Raise :exc:TypeError if :class:ssl.SSLSocket is passed to transport-based APIs.

.. bpo: 46784 .. date: 2022-02-18-22-10-30 .. nonce: SVOQJx .. section: Library

Fix libexpat symbols collisions with user dynamically loaded or statically linked libexpat in embedded Python.

.. bpo: 46786 .. date: 2022-02-18-12-10-26 .. nonce: P0xRvS .. section: Library

The HTML serialisation in xml.etree.ElementTree now writes embed, source, track and wbr as empty tags, as defined in HTML 5.

.. bpo: 39327 .. date: 2022-02-17-13-10-50 .. nonce: ytIT7Z .. section: Library

:func:shutil.rmtree can now work with VirtualBox shared folders when running from the guest operating-system.

.. bpo: 45390 .. date: 2022-02-17-11-00-16 .. nonce: sVhG6M .. section: Library

Propagate :exc:asyncio.CancelledError message from inner task to outer awaiter.

.. bpo: 46756 .. date: 2022-02-15-11-57-53 .. nonce: AigSPi .. section: Library

Fix a bug in :meth:urllib.request.HTTPPasswordMgr.find_user_password and :meth:urllib.request.HTTPPasswordMgrWithPriorAuth.is_authenticated which allowed to bypass authorization. For example, access to URI example.org/foobar was allowed if the user was authorized for URI example.org/foo.

.. bpo: 46737 .. date: 2022-02-15-07-39-43 .. nonce: 6Pnblt .. section: Library

:func:random.gauss and :func:random.normalvariate now have default arguments.

.. bpo: 46752 .. date: 2022-02-14-21-21-49 .. nonce: m6ldTm .. section: Library

Add task groups to asyncio (structured concurrency, inspired by Trio's nurseries). This also introduces a change to task cancellation, where a cancelled task can't be cancelled again until it calls .uncancel().

.. bpo: 46724 .. date: 2022-02-11-20-41-17 .. nonce: eU52_N .. section: Library

Fix :mod:dis behavior on negative jump offsets.

.. bpo: 46333 .. date: 2022-02-11-20-01-49 .. nonce: PMTBY9 .. section: Library

The :meth:__repr__ method of :class:typing.ForwardRef now includes the module parameter of :class:typing.ForwardRef when it is set.

.. bpo: 46643 .. date: 2022-02-09-22-40-11 .. nonce: aBlIx1 .. section: Library

In :func:typing.get_type_hints, support evaluating stringified ParamSpecArgs and ParamSpecKwargs annotations. Patch by Gregory Beauregard.

.. bpo: 45863 .. date: 2022-02-09-00-53-23 .. nonce: zqQXVv .. section: Library

When the :mod:tarfile module creates a pax format archive, it will put an integer representation of timestamps in the ustar header (if possible) for the benefit of older unarchivers, in addition to the existing full-precision timestamps in the pax extended header.

.. bpo: 46066 .. date: 2022-02-08-16-42-20 .. nonce: m32Hl0 .. section: Library

Deprecate kwargs-based syntax for :class:typing.TypedDict definitions. It had confusing semantics when specifying totality, and was largely unused. Patch by Jingchen Ye.

.. bpo: 46676 .. date: 2022-02-07-19-20-42 .. nonce: 3Aws1o .. section: Library

Make :data:typing.ParamSpec args and kwargs equal to themselves. Patch by Gregory Beauregard.

.. bpo: 46323 .. date: 2022-02-07-13-27-59 .. nonce: 7UENAj .. section: Library

ctypes.CFUNCTYPE() and ctypes.WINFUNCTYPE() now fail to create the type if its _argtypes_ member contains too many arguments. Previously, the error was only raised when calling a function. Patch by Victor Stinner.

.. bpo: 46672 .. date: 2022-02-07-13-15-16 .. nonce: 4swIjx .. section: Library

Fix NameError in :func:asyncio.gather when initial type check fails.

.. bpo: 46659 .. date: 2022-02-06-19-13-02 .. nonce: q-vNL9 .. section: Library

The :class:calendar.LocaleTextCalendar and :class:calendar.LocaleHTMLCalendar classes now use :func:locale.getlocale, instead of using :func:locale.getdefaultlocale, if no locale is specified. Patch by Victor Stinner.

.. bpo: 46659 .. date: 2022-02-06-17-57-45 .. nonce: zTmkoQ .. section: Library

The :func:locale.getdefaultlocale function is deprecated and will be removed in Python 3.13. Use :func:locale.setlocale, :func:locale.getpreferredencoding(False) <locale.getpreferredencoding> and :func:locale.getlocale functions instead. Patch by Victor Stinner.

.. bpo: 46655 .. date: 2022-02-06-08-54-03 .. nonce: DiLzYv .. section: Library

In :func:typing.get_type_hints, support evaluating bare stringified TypeAlias annotations. Patch by Gregory Beauregard.

.. bpo: 45948 .. date: 2022-02-05-18-22-05 .. nonce: w4mCnE .. section: Library

Fixed a discrepancy in the C implementation of the :mod:xml.etree.ElementTree module. Now, instantiating an :class:xml.etree.ElementTree.XMLParser with a target=None keyword provides a default :class:xml.etree.ElementTree.TreeBuilder target as the Python implementation does.

.. bpo: 46626 .. date: 2022-02-03-10-22-42 .. nonce: r2e-n_ .. section: Library

Expose Linux's IP_BIND_ADDRESS_NO_PORT option in :mod:socket.

.. bpo: 46521 .. date: 2022-02-01-19-34-28 .. nonce: IMUIrs .. section: Library

Fix a bug in the :mod:codeop module that was incorrectly identifying invalid code involving string quotes as valid code.

.. bpo: 46571 .. date: 2022-02-01-11-21-34 .. nonce: L40xUJ .. section: Library

Improve :func:typing.no_type_check.

Now it does not modify external classes and functions. We also now correctly mark classmethods as not to be type checked.

.. bpo: 46400 .. date: 2022-01-30-15-16-12 .. nonce: vweUiO .. section: Library

expat: Update libexpat from 2.4.1 to 2.4.4

.. bpo: 46556 .. date: 2022-01-27-23-20-30 .. nonce: tlpAgS .. section: Library

Deprecate undocumented support for using a :class:pathlib.Path object as a context manager.

.. bpo: 46534 .. date: 2022-01-26-18-06-08 .. nonce: vhzUM4 .. section: Library

Implement :pep:673 :class:typing.Self. Patch by James Hilton-Balfe.

.. bpo: 46522 .. date: 2022-01-25-15-31-04 .. nonce: tYAlX4 .. section: Library

Make various module __getattr__ AttributeErrors more closely match a typical AttributeError

.. bpo: 46475 .. date: 2022-01-23-15-35-07 .. nonce: UCe18S .. section: Library

Add :data:typing.Never and :func:typing.assert_never. Patch by Jelle Zijlstra.

.. bpo: 46333 .. date: 2022-01-11-15-54-15 .. nonce: B1faiF .. section: Library

The :meth:__eq__ and :meth:__hash__ methods of :class:typing.ForwardRef now honor the module parameter of :class:typing.ForwardRef. Forward references from different modules are now differentiated.

.. bpo: 46246 .. date: 2022-01-07-13-27-53 .. nonce: CTLx32 .. section: Library

Add missing __slots__ to importlib.metadata.DeprecatedList. Patch by Arie Bovenberg.

.. bpo: 46232 .. date: 2022-01-03-09-46-44 .. nonce: s0KlyI .. section: Library

The :mod:ssl module now handles certificates with bit strings in DN correctly.

.. bpo: 46195 .. date: 2021-12-30-21-38-51 .. nonce: jFKGq_ .. section: Library

:func:typing.get_type_hints no longer adds Optional to parameters with None as a default. This aligns to changes to PEP 484 in https://github.com/python/peps/pull/689

.. bpo: 31369 .. date: 2021-12-27-18-28-44 .. nonce: b9yM94 .. section: Library

Add :class:~re.RegexFlag to re.__all__ and documented it. Add :data:~re.RegexFlag.NOFLAG to indicate no flags being set.

.. bpo: 45898 .. date: 2021-11-26-10-46-09 .. nonce: UIfhsb .. section: Library

:mod:ctypes no longer defines ffi_type_* symbols in cfield.c. The symbols have been provided by libffi for over a decade.

.. bpo: 44953 .. date: 2021-08-19-09-29-43 .. nonce: 27ZyUd .. section: Library

Calling operator.itemgetter objects and operator.attrgetter objects is now faster due to use of the vectorcall calling convention.

.. bpo: 44289 .. date: 2021-06-02-19-47-46 .. nonce: xC5kuV .. section: Library

Fix an issue with :meth:~tarfile.is_tarfile method when using fileobj argument: position in the fileobj was advanced forward which made it unreadable with :meth:tarfile.TarFile.open.

.. bpo: 44011 .. date: 2021-05-02-23-44-21 .. nonce: hd8iUO .. section: Library

Reimplement SSL/TLS support in asyncio, borrow the implementation from uvloop library.

.. bpo: 41086 .. date: 2020-06-23-01-50-24 .. nonce: YnOvpS .. section: Library

Make the :class:configparser.ConfigParser constructor raise :exc:TypeError if the interpolation parameter is not of type :class:!configparser.Interpolation

.. bpo: 29418 .. date: 2020-03-31-20-53-11 .. nonce: 8Qa9cQ .. section: Library

Implement :func:inspect.ismethodwrapper and fix :func:inspect.isroutine for cases where methodwrapper is given. Patch by Hakan Çelik.

.. bpo: 14156 .. date: 2019-05-07-14-25-45 .. nonce: 0FaHXE .. section: Library

argparse.FileType now supports an argument of '-' in binary mode, returning the .buffer attribute of sys.stdin/sys.stdout as appropriate. Modes including 'x' and 'a' are treated equivalently to 'w' when argument is '-'. Patch contributed by Josh Rosenberg

.. bpo: 42238 .. date: 2022-02-03-11-24-59 .. nonce: yJcMa8 .. section: Documentation

Doc/tools/rstlint.py has moved to its own repository and is now packaged on PyPI as sphinx-lint.

.. bpo: 46913 .. date: 2022-03-03-17-36-24 .. nonce: vxETIE .. section: Tests

Fix test_faulthandler.test_sigfpe() if Python is built with undefined behavior sanitizer (UBSAN): disable UBSAN on the faulthandler_sigfpe() function. Patch by Victor Stinner.

.. bpo: 46760 .. date: 2022-02-16-10-38-18 .. nonce: O3ovJo .. section: Tests

Remove bytecode offsets from expected values in test.test_dis module. Reduces the obstacles to modifying the VM or compiler.

.. bpo: 46708 .. date: 2022-02-10-14-33-47 .. nonce: avLfCb .. section: Tests

Prevent default asyncio event loop policy modification warning after test_asyncio execution.

.. bpo: 46678 .. date: 2022-02-07-12-40-45 .. nonce: zfOrgL .. section: Tests

The function make_legacy_pyc in Lib/test/support/import_helper.py no longer fails when PYTHONPYCACHEPREFIX is set to a directory on a different device from where tempfiles are stored.

.. bpo: 46623 .. date: 2022-02-03-09-45-26 .. nonce: vxzuhV .. section: Tests

Skip test_pair() and test_speech128() of test_zlib on s390x since they fail if zlib uses the s390x hardware accelerator. Patch by Victor Stinner.

.. bpo: 46860 .. date: 2022-02-25-16-19-40 .. nonce: jfciLG .. section: Build

Respect --with-suffix when building on case-insensitive file systems.

.. bpo: 46656 .. date: 2022-02-25-00-51-16 .. nonce: MD783M .. section: Build

Building Python now requires a C11 compiler. Optional C11 features are not required. Patch by Victor Stinner.

.. bpo: 46656 .. date: 2022-02-06-14-04-20 .. nonce: ajJjkh .. section: Build

Building Python now requires support for floating-point Not-a-Number (NaN): remove the Py_NO_NAN macro. Patch by Victor Stinner.

.. bpo: 46640 .. date: 2022-02-04-21-26-50 .. nonce: HXUmQp .. section: Build

Building Python now requires a C99 <math.h> header file providing a NAN constant, or the __builtin_nan() built-in function. Patch by Victor Stinner.

.. bpo: 46608 .. date: 2022-02-02-11-26-46 .. nonce: cXH9po .. section: Build

Exclude marshalled-frozen data if deep-freezing to save 300 KB disk space. This includes adding a new is_package field to :c:struct:_frozen. Patch by Kumar Aditya.

.. bpo: 40280 .. date: 2022-01-31-15-15-08 .. nonce: r1AYNW .. section: Build

Fix wasm32-emscripten test failures and platform issues. - Disable syscalls that are not supported or don't work, e.g. wait, getrusage, prlimit, mkfifo, mknod, setres[gu]id, setgroups. - Use fd_count to count open fds. - Add more checks for subprocess and fork. - Add workarounds for missing _multiprocessing and failing socket.accept(). - Enable bzip2. - Disable large file support. - Disable signal.alarm.

.. bpo: 46430 .. date: 2022-01-19-11-08-32 .. nonce: k403m_ .. section: Build

Intern strings in deep-frozen modules. Patch by Kumar Aditya.

.. bpo: 46744 .. date: 2022-03-04-00-24-55 .. nonce: tneWFr .. section: Windows

The default all users install directory for ARM64 is now under the native Program Files folder, rather than Program Files (Arm) which is intended for ARM (32-bit) files.

.. bpo: 46567 .. date: 2022-02-25-01-22-31 .. nonce: 37WEue .. section: Windows

Adds Tcl and Tk support for Windows ARM64. This also adds IDLE to the installation.

.. bpo: 46638 .. date: 2022-02-04-18-02-33 .. nonce: mSJOSX .. section: Windows

Ensures registry virtualization is consistently disabled. For 3.10 and earlier, it remains enabled (some registry writes are protected), while for 3.11 and later it is disabled (registry modifications affect all applications).

.. bpo: 46630 .. date: 2022-02-03-15-47-53 .. nonce: tREOjo .. section: IDLE

Make query dialogs on Windows start with a cursor in the entry box.

.. bpo: 45447 .. date: 2021-10-14-16-55-03 .. nonce: FhiH5P .. section: IDLE

Apply IDLE syntax highlighting to .pyi files. Patch by Alex Waygood and Terry Jan Reedy.

.. bpo: 46748 .. date: 2022-02-24-13-13-16 .. nonce: aG1zb3 .. section: C API

Python's public headers no longer import <stdbool.h>, leaving code that embeds/extends Python free to define bool, true and false.

.. bpo: 46836 .. date: 2022-02-23-16-13-17 .. nonce: ZYyPF_ .. section: C API

Move the :c:type:PyFrameObject type definition (struct _frame) to the internal C API pycore_frame.h header file. Patch by Victor Stinner.

.. bpo: 45459 .. date: 2022-02-07-18-47-00 .. nonce: 0FCWM8 .. section: C API

Rename Include/buffer.h header file to Include/pybuffer.h to avoid conflicts with projects having an existing buffer.h header file. Patch by Victor Stinner.

.. bpo: 45412 .. date: 2022-02-06-20-14-21 .. nonce: XJVaGW .. section: C API

Remove the HAVE_PY_SET_53BIT_PRECISION macro (moved to the internal C API). Patch by Victor Stinner.

.. bpo: 46613 .. date: 2022-02-02-17-58-49 .. nonce: __ZdpH .. section: C API

Added function :c:func:PyType_GetModuleByDef, which allows access to module state when a method's defining class is not available.