Log message:
python312 py312-html-docs: updated to 3.12.8

Python 3.12.8

macOS

gh-124448: Update bundled Tcl/Tk in macOS installer to 8.6.15.

Windows

gh-126911: Update credits command output.
gh-125315: Avoid crashing in platform due to slow WMI calls on some Windows machines.
gh-125550: Enable the Python Launcher for Windows to detect Python 3.14 installs \ 
from the Windows Store.
gh-124448: Updated bundled Tcl/Tk to 8.6.15.

Tools/Demos

gh-126807: Fix extraction warnings in pygettext.py caused by mistaking function \ 
definitions for function calls.

Tests

gh-126909: Fix test_os extended attribute tests to work on filesystems with 1 \ 
KiB xattr size limit.
gh-125041: Re-enable skipped tests for zlib on the s390x architecture: only skip \ 
checks of the compressed bytes, which can be different between zlib’s software \ 
implementation and the hardware-accelerated implementation.
gh-124295: Add translation tests to the argparse module.

Security

gh-126623: Upgrade libexpat to 2.6.4

Library

gh-127303: Publicly expose EXACT_TOKEN_TYPES in token.__all__.

gh-123967: Fix faulthandler for trampoline frames. If the top-most frame is a \ 
trampoline frame, skip it. Patch by Victor Stinner.

gh-127182: Fix io.StringIO.__setstate__() crash, when None was passed as the \ 
first value.

gh-127217: Fix urllib.request.pathname2url() for paths starting with multiple \ 
slashes on Posix.

gh-127035: Fix shutil.which on Windows. Now it looks at direct match if and only \ 
if the command ends with a PATHEXT extension or X_OK is not in mode. Support \ 
extensionless files if “.” is in PATHEXT. Support PATHEXT extensions that \ 
end with a dot.

gh-127078: Fix issue where urllib.request.url2pathname() failed to discard an \ 
extra slash before a UNC drive in the URL path on Windows.

gh-126766: Fix issue where urllib.request.url2pathname() failed to discard any \ 
‘localhost’ authority present in the URL.

gh-126997: Fix support of STRING and GLOBAL opcodes with non-ASCII arguments in \ 
pickletools. pickletools.dis() now outputs non-ASCII bytes in STRING, BINSTRING \ 
and SHORT_BINSTRING arguments as escaped (\xXX).

gh-126618: Fix the representation of itertools.count objects when the count \ 
value is sys.maxsize.

gh-85168: Fix issue where urllib.request.url2pathname() and pathname2url() \ 
always used UTF-8 when quoting and unquoting file URIs. They now use the \ 
filesystem encoding and error handler.

gh-67877: Fix memory leaks when regular expression matching terminates abruptly, \ 
either because of a signal or because memory allocation fails.

gh-126789: Fixed the values of sysconfig.get_config_vars(), \ 
sysconfig.get_paths(), and their siblings when the site initialization happens \ 
after sysconfig has built a cache for sysconfig.get_config_vars().

gh-126188: Update bundled pip to 24.3.1

gh-126766: Fix issue where urllib.request.url2pathname() failed to discard two \ 
leading slashes introducing an empty authority section.

gh-126727: locale.nl_langinfo(locale.ERA) now returns multiple era description \ 
segments separated by semicolons. Previously it only returned the first segment \ 
on platforms with Glibc.

gh-126699: Allow collections.abc.AsyncIterator to be a base for Protocols.

gh-104745: Limit starting a patcher (from unittest.mock.patch() or \ 
unittest.mock.patch.object()) more than once without stopping it

gh-126595: Fix a crash when instantiating itertools.count with an initial count \ 
of sys.maxsize on debug builds. Patch by Bénédikt Tran.

gh-120423: Fix issue where urllib.request.pathname2url() mishandled Windows \ 
paths with embedded forward slashes.

gh-126565: Improve performances of zipfile.Path.open() for non-reading modes.

gh-126505: Fix bugs in compiling case-insensitive regular expressions with \ 
character classes containing non-BMP characters: upper-case non-BMP character \ 
did was ignored and the ASCII flag was ignored when matching a character range \ 
whose upper bound is beyond the BMP region.

gh-117378: Fixed the multiprocessing "forkserver" start method \ 
forkserver process to correctly inherit the parent’s sys.path during the \ 
importing of multiprocessing.set_forkserver_preload() modules in the same manner \ 
as sys.path is configured in workers before executing work items.

This bug caused some forkserver module preloading to silently fail to preload. \ 
This manifested as a performance degration in child processes when the sys.path \ 
was required due to additional repeated work in every worker.

It could also have a side effect of "" remaining in sys.path during \ 
forkserver preload imports instead of the absolute path from os.getcwd() at \ 
multiprocessing import time used in the worker sys.path.

The sys.path differences between phases in the child process could potentially \ 
have caused preload to import incorrect things from the wrong location. We are \ 
unaware of that actually having happened in practice.

gh-125679: The multiprocessing.Lock and multiprocessing.RLock repr values no \ 
longer say “unknown” on macOS.

gh-126476: Raise calendar.IllegalMonthError (now a subclass of IndexError) for \ 
calendar.month() when the input month is not correct.

gh-126489: The Python implementation of pickle no longer calls \ 
pickle.Pickler.persistent_id() for the result of persistent_id().

gh-126303: Fix pickling and copying of os.sched_param objects.

gh-126138: Fix a use-after-free crash on asyncio.Task objects whose underlying \ 
coroutine yields an object that implements an evil __getattribute__(). Patch by \ 
Nico Posada.

gh-126220: Fix crash in cProfile.Profile and _lsprof.Profiler when their \ 
callbacks were directly called with 0 arguments.

gh-126212: Fix issue where urllib.request.pathname2url() and url2pathname() \ 
removed slashes from Windows DOS drive paths and URLs.

gh-126205: Fix issue where urllib.request.pathname2url() generated URLs \ 
beginning with four slashes (rather than two) when given a Windows UNC path.

gh-126105: Fix a crash in ast when the ast.AST._fields attribute is deleted.

gh-126106: Fixes a possible NULL pointer dereference in ssl.

gh-126080: Fix a use-after-free crash on asyncio.Task objects for which the \ 
underlying event loop implements an evil __getattribute__(). Reported by \ 
Nico-Posada. Patch by Bénédikt Tran.

gh-126083: Fixed a reference leak in asyncio.Task objects when reinitializing \ 
the same object with a non-None context. Patch by Nico Posada.

gh-125984: Fix use-after-free crashes on asyncio.Future objects for which the \ 
underlying event loop implements an evil __getattribute__(). Reported by \ 
Nico-Posada. Patch by Bénédikt Tran.

gh-125969: Fix an out-of-bounds crash when an evil asyncio.loop.call_soon() \ 
mutates the length of the internal callbacks list. Patch by Bénédikt Tran.

gh-125966: Fix a use-after-free crash in asyncio.Future.remove_done_callback(). \ 
Patch by Bénédikt Tran.

gh-125789: Fix possible crash when mutating list of callbacks returned by \ 
asyncio.Future._callbacks. It now always returns a new copy in C implementation \ 
_asyncio. Patch by Kumar Aditya.

gh-124452: Fix an issue in email.policy.EmailPolicy.header_source_parse() and \ 
email.policy.Compat32.header_source_parse() that introduced spurious leading \ 
whitespaces into header values when the header includes a newline character \ 
after the header name delimiter (:) and before the value.

gh-125884: Fixed the bug for pdb where it can’t set breakpoints on functions \ 
with certain annotations.

gh-125355: Fix several bugs in argparse.ArgumentParser.parse_intermixed_args().

The parser no longer changes temporarily during parsing.
Default values are not processed twice.
Required mutually exclusive groups containing positional arguments are now supported.
The missing arguments report now includes the names of all required optional and \ 
positional arguments.
Unknown options can be intermixed with positional arguments in \ 
parse_known_intermixed_args().
gh-125682: Reject non-ASCII digits in the Python implementation of json.loads() \ 
conforming to the JSON specification.

gh-125660: Reject invalid unicode escapes for Python implementation of json.loads().

gh-125259: Fix the notes removal logic for errors thrown in enum initialization.

gh-125519: Improve traceback if importlib.reload() is called with an object that \ 
is not a module. Patch by Alex Waygood.

gh-125451: Fix deadlock when concurrent.futures.ProcessPoolExecutor shuts down \ 
concurrently with an error when feeding a job to a worker process.

gh-125422: Fixed the bug where pdb and bdb can step into the bottom caller frame.

gh-100141: Fixed the bug where pdb will be stuck in an infinite loop when \ 
debugging an empty file.

gh-53203: Fix time.strptime() for %c, %x and %X formats in many locales that use \ 
non-ASCII digits, like Persian, Burmese, Odia and Shan.

gh-125254: Fix a bug where ArgumentError includes the incorrect ambiguous option \ 
in argparse.

gh-61011: Fix inheritance of nested mutually exclusive groups from parent parser \ 
in argparse.ArgumentParser. Previously, all nested mutually exclusive groups \ 
lost their connection to the group containing them and were displayed as \ 
belonging directly to the parser.

gh-52551: Fix encoding issues in time.strftime(), the strftime() method of the \ 
datetime classes datetime, date and time and formatting of these classes. \ 
Characters not encodable in the current locale are now acceptable in the format \ 
string. Surrogate pairs and sequence of surrogatescape-encoded bytes are no \ 
longer recombinated. Embedded null character no longer terminates the format \ 
string.

gh-125118: Don’t copy arbitrary values to _Bool in the struct module.

gh-125069: Fix an issue where providing a pathlib.PurePath object as an \ 
initializer argument to a second PurePath object with a different flavour \ 
resulted in arguments to the former object’s initializer being joined by the \ 
latter object’s flavour.

gh-124969: Fix locale.nl_langinfo(locale.ALT_DIGITS) on platforms with glibc. \ 
Now it returns a string consisting of up to 100 semicolon-separated symbols (an \ 
empty string in most locales) on all Posix platforms. Previously it only \ 
returned the first symbol or an empty string.

gh-124958: Fix refcycles in exceptions raised from asyncio.TaskGroup and the \ 
python implementation of asyncio.Future

gh-53203: Fix time.strptime() for %c and %x formats in many locales: Arabic, \ 
Bislama, Breton, Bodo, Kashubian, Chuvash, Estonian, French, Irish, Ge’ez, \ 
Gurajati, Manx Gaelic, Hebrew, Hindi, Chhattisgarhi, Haitian Kreyol, Japanese, \ 
Kannada, Korean, Marathi, Malay, Norwegian, Nynorsk, Punjabi, Rajasthani, Tok \ 
Pisin, Yoruba, Yue Chinese, Yau/Nungon and Chinese.

gh-124917: Allow calling os.path.exists() and os.path.lexists() with keyword \ 
arguments on Windows. Fixes a regression in 3.12.4.

gh-124653: Fix detection of the minimal Queue API needed by the logging module. \ 
Patch by Bénédikt Tran.

gh-124858: Fix reference cycles left in tracebacks in asyncio.open_connection() \ 
when used with happy_eyeballs_delay

gh-124390: Fixed AssertionError when using asyncio.staggered.staggered_race() \ 
with asyncio.eager_task_factory.

gh-124651: Properly quote template strings in venv activation scripts.

gh-124594: All asyncio REPL prompts run in the same context. Contributed by \ 
Bartosz Sławecki.

gh-120378: Fix a crash related to an integer overflow in curses.resizeterm() and \ 
curses.resize_term().

gh-123884: Fixed bug in itertools.tee() handling of other tee inputs (a tee in a \ 
tee). The output now has the promised n independent new iterators. Formerly, the \ 
first iterator was identical (not independent) to the input iterator. This would \ 
sometimes give surprising results.

gh-123978: Remove broken time.thread_time() and time.thread_time_ns() on NetBSD.

gh-124008: Fix possible crash (in debug build), incorrect output or returning \ 
incorrect value from raw binary write() when writing to console on Windows.

gh-123370: Fix the canvas not clearing after running turtledemo clock.

gh-120754: Update unbounded read calls in zipfile to specify an explicit size \ 
putting a limit on how much data they may read. This also updates handling \ 
around ZIP max comment size to match the standard instead of reading comments \ 
that are one byte too long.

gh-70764: Fixed an issue where inspect.getclosurevars() would incorrectly \ 
classify an attribute name as a global variable when the name exists both as an \ 
attribute name and a global variable.

gh-119826: Always return an absolute path for os.path.abspath() on Windows.

gh-117766: Always use str() to print choices in argparse.

gh-101955: Fix SystemError when match regular expression pattern containing some \ 
combination of possessive quantifier, alternative and capture group.

gh-88110: Fixed multiprocessing.Process reporting a .exitcode of 1 even on \ 
success when using the "fork" start method while using a \ 
concurrent.futures.ThreadPoolExecutor.

gh-71936: Fix a race condition in multiprocessing.pool.Pool.

bpo-46128: Strip unittest.IsolatedAsyncioTestCase stack frames from reported \ 
stacktraces.

bpo-14074: Fix argparse metavar processing to allow positional arguments to have \ 
a tuple metavar.

IDLE

gh-122392: Increase currently inadequate vertical spacing for the IDLE browsers \ 
(path, module, and stack) on high-resolution monitors.

Documentation

gh-125277: Require Sphinx 7.2.6 or later to build the Python documentation. \ 
Patch by Adam Turner.
gh-125018: The importlib.metadata documentation now includes semantic \ 
cross-reference targets for the significant documented APIs. This means \ 
intersphinx references like importlib.metadata.version() will now work as \ 
expected.
gh-121277: Writers of CPython’s documentation can now use next as the version \ 
for the versionchanged, versionadded, deprecated directives.
gh-60712: Include the object type in the lists of documented types. Change by \ 
Furkan Onder and Martin Panter.
Core and Builtins
gh-113841: Fix possible undefined behavior division by zero in complex’s \ 
_Py_c_pow().
gh-126341: Now ValueError is raised instead of SystemError when trying to \ 
iterate over a released memoryview object.
gh-126066: Fix importlib to not write an incomplete .pyc files when a ulimit or \ 
some other operating system mechanism is preventing the write to go through \ 
fully.
gh-126139: Provide better error location when attempting to use a future \ 
statement with an unknown future feature.
gh-125008: Fix tokenize.untokenize() producing invalid syntax for double braces \ 
preceded by certain escape characters.
gh-123378: Fix a crash in the __str__() method of UnicodeError objects when the \ 
UnicodeError.start and UnicodeError.end values are invalid or out-of-range. \ 
Patch by Bénédikt Tran.
gh-116510: Fix a crash caused by immortal interned strings being shared between \ 
sub-interpreters that use basic single-phase init. In that case, the string can \ 
be used by an interpreter that outlives the interpreter that created and \ 
interned it. For interpreters that share obmalloc state, also share the interned \ 
dict with the main interpreter.
gh-118950: Fix bug where SSLProtocol.connection_lost wasn’t getting called \ 
when OSError was thrown on writing to socket.
gh-113570: Fixed a bug in reprlib.repr where it incorrectly called the repr \ 
method on shadowed Python built-in types.
gh-109746: If _thread.start_new_thread() fails to start a new thread, it deletes \ 
its state from interpreter and thus avoids its repeated cleanup on finalization.

C API

gh-113601: Removed debug build assertions related to interning strings, which \ 
were falsely triggered by stable ABI extensions.

Build

gh-89640: Hard-code float word ordering as little endian on WASM.
gh-89640: Improve detection of float word ordering on Linux when link-time \ 
optimizations are enabled.

Log message:
python312 py312-html-docs: updated to 3.12.3

Python 3.12.3

Security

gh-115398: Allow controlling Expat >=2.6.0 reparse deferral (CVE-2023-52425) \ 
by adding five new methods:
xml.etree.ElementTree.XMLParser.flush()
xml.etree.ElementTree.XMLPullParser.flush()
xml.parsers.expat.xmlparser.GetReparseDeferralEnabled()
xml.parsers.expat.xmlparser.SetReparseDeferralEnabled()
xml.sax.expatreader.ExpatParser.flush()
gh-115399: Update bundled libexpat to 2.6.0
gh-115243: Fix possible crashes in collections.deque.index() when the deque is \ 
concurrently modified.
gh-114572: ssl.SSLContext.cert_store_stats() and ssl.SSLContext.get_ca_certs() \ 
now correctly lock access to the certificate store, when the ssl.SSLContext is \ 
shared across multiple threads.

Core and Builtins

gh-109120: Added handle of incorrect star expressions, e.g f(3, *). Patch by \ 
Grigoryev Semyon
gh-99108: Updated the hashlib built-in HACL* project C code from upstream that \ 
we use for many implementations when they are not present via OpenSSL in a given \ 
build. This also avoids the rare potential for a C symbol name one definition \ 
rule linking issue.
gh-116735: For INSTRUMENTED_CALL_FUNCTION_EX, set arg0 to sys.monitoring.MISSING \ 
instead of None for CALL event.
gh-113964: Starting new threads and process creation through os.fork() are now \ 
only prevented once all non-daemon threads exit.
gh-116604: Respect the status of the garbage collector when indirect calls are \ 
made via PyErr_CheckSignals() and the evaluation breaker. Patch by Pablo Galindo
gh-116626: Ensure INSTRUMENTED_CALL_FUNCTION_EX always emits CALL
gh-116296: Fix possible refleak in object.__reduce__() internal error handling.
gh-116034: Fix location of the error on a failed assertion.
gh-115823: Properly calculate error ranges in the parser when raising \ 
SyntaxError exceptions caused by invalid byte sequences. Patch by Pablo Galindo
gh-112087: For an empty reverse iterator for list will be reduced to reversed(). \ 
Patch by Donghee Na.
gh-115154: Fix a bug that was causing the tokenize.untokenize() function to \ 
handle unicode named literals incorrectly. Patch by Pablo Galindo
gh-114828: Fix compilation crashes in uncommon code examples using super() \ 
inside a comprehension in a class body.
gh-115011: Setters for members with an unsigned integer type now support the \ 
same range of valid values for objects that has a __index__() method as for int.
gh-112215: Change the C recursion limits to more closely reflect the underlying \ 
platform limits.
gh-96497: Fix incorrect resolution of mangled class variables used in assignment \ 
expressions in comprehensions.

Library

gh-117467: Preserve mailbox ownership when rewriting in mailbox.mbox.flush(). \ 
Patch by Tony Mountifield.

gh-117310: Fixed an unlikely early & extra Py_DECREF triggered crash in ssl \ 
when creating a new _ssl._SSLContext if CPython was built implausibly such that \ 
the default cipher list is empty or the SSL library it was linked against \ 
reports a failure from its C SSL_CTX_set_cipher_list() API.

gh-117178: Fix regression in lazy loading of self-referential modules, \ 
introduced in gh-114781.

gh-117084: Fix zipfile extraction for directory entries with the name containing \ 
backslashes on Windows.

gh-117110: Fix a bug that prevents subclasses of typing.Any to be instantiated \ 
with arguments. Patch by Chris Fu.

gh-90872: On Windows, subprocess.Popen.wait() no longer calls \ 
WaitForSingleObject() with a negative timeout: pass 0 ms if the timeout is \ 
negative. Patch by Victor Stinner.

gh-116957: configparser: Don’t leave ConfigParser values in an invalid state \ 
(stored as a list instead of a str) after an earlier read raised \ 
DuplicateSectionError or DuplicateOptionError.

gh-90095: Ignore empty lines and comments in .pdbrc

gh-116764: Restore support of None and other false values in urllib.parse \ 
functions parse_qs() and parse_qsl(). Also, they now raise a TypeError for \ 
non-zero integers and non-empty sequences.

gh-116811: In PathFinder.invalidate_caches, delegate to \ 
MetadataPathFinder.invalidate_caches.

gh-116600: Fix repr() for global Flag members.

gh-116484: Change automatically generated tkinter.Checkbutton widget names to \ 
avoid collisions with automatically generated tkinter.ttk.Checkbutton widget \ 
names within the same parent widget.

gh-116401: Fix blocking os.fwalk() and shutil.rmtree() on opening named pipe.

gh-116143: Fix a race in pydoc _start_server, eliminating a window in which \ 
_start_server can return a thread that is “serving” but without a docserver \ 
set.

gh-116325: typing: raise SyntaxError instead of AttributeError on forward \ 
references as empty strings.

gh-90535: Fix support of interval values > 1 in \ 
logging.TimedRotatingFileHandler for when='MIDNIGHT' and when='Wx'.

gh-115978: Disable preadv(), readv(), pwritev(), and writev() on WASI.

Under wasmtime for WASI 0.2, these functions don’t pass test_posix \ 
(https://github.com/bytecodealliance/wasmtime/issues/7830).

gh-88352: Fix the computation of the next rollover time in the \ 
logging.TimedRotatingFileHandler handler. computeRollover() now always returns a \ 
timestamp larger than the specified time and works correctly during the DST \ 
change. doRollover() no longer overwrite the already rolled over file, saving \ 
from data loss when run at midnight or during repeated time at the DST change.

gh-87115: Set __main__.__spec__ to None when running a script with pdb

gh-76511: Fix UnicodeEncodeError in email.Message.as_string() that results when \ 
a message that claims to be in the ascii character set actually has non-ascii \ 
characters. Non-ascii characters are now replaced with the U+FFFD replacement \ 
character, like in the replace error handler.

gh-116040: [Enum] fix by-value calls when second value is falsey; e.g. Cardinal(1, 0)

gh-75988: Fixed unittest.mock.create_autospec() to pass the call through to the \ 
wrapped object to return the real result.

gh-115881: Fix issue where ast.parse() would incorrectly flag conditional \ 
context managers (such as with (x() if y else z()): ...) as invalid syntax if \ 
feature_version=(3, 8) was passed. This reverts changes to the grammar made as \ 
part of gh-94949.

gh-115886: Fix silent truncation of the name with an embedded null character in \ 
multiprocessing.shared_memory.SharedMemory.

gh-115809: Improve algorithm for computing which rolled-over log files to delete \ 
in logging.TimedRotatingFileHandler. It is now reliable for handlers without \ 
namer and with arbitrary deterministic namer that leaves the datetime part in \ 
the file name unmodified.

gh-74668: urllib.parse functions parse_qs() and parse_qsl() now support bytes \ 
arguments containing raw and percent-encoded non-ASCII data.

gh-67044: csv.writer() now always quotes or escapes '\r' and '\n', regardless of \ 
lineterminator value.

gh-115712: csv.writer() now quotes empty fields if delimiter is a space and \ 
skipinitialspace is true and raises exception if quoting is not possible.

gh-112364: Fixed ast.unparse() to handle format_spec with ", ' or \\. \ 
Patched by Frank Hoffmann.

gh-111358: Fix a bug in asyncio.BaseEventLoop.shutdown_default_executor() to \ 
ensure the timeout passed to the coroutine behaves as expected.

gh-115618: Fix improper decreasing the reference count for None argument in \ 
property methods getter(), setter() and deleter().

gh-115570: A DeprecationWarning is no longer omitted on access to the __doc__ \ 
attributes of the deprecated typing.io and typing.re pseudo-modules.

gh-112006: Fix inspect.unwrap() for types with the __wrapper__ data descriptor.

gh-101293: Support callables with the __call__() method and types with __new__() \ 
and __init__() methods set to class methods, static methods, bound methods, \ 
partial functions, and other types of methods and descriptors in \ 
inspect.Signature.from_callable().

gh-115392: Fix a bug in doctest where incorrect line numbers would be reported \ 
for decorated functions.

gh-114563: Fix several format() bugs when using the C implementation of Decimal: \ 
* memory leak in some rare cases when using the z format option (coerce negative \ 
0) * incorrect output when applying the z format option to type F (fixed-point \ 
with capital NAN / INF) * incorrect output when applying the # format option \ 
(alternate form)

gh-115197: urllib.request no longer resolves the hostname before checking it \ 
against the system’s proxy bypass list on macOS and Windows.

gh-115165: Most exceptions are now ignored when attempting to set the \ 
__orig_class__ attribute on objects returned when calling typing generic aliases \ 
(including generic aliases created using typing.Annotated). Previously only \ 
AttributeError was ignored. Patch by Dave Shawley.

gh-115133: Fix tests for XMLPullParser with Expat 2.6.0.

gh-115059: io.BufferedRandom.read1() now flushes the underlying write buffer.

gh-79382: Trailing ** no longer allows to match files and non-existing paths in \ 
recursive glob().

gh-114071: Support tuple subclasses using auto() for enum member value.

gh-114763: Protect modules loaded with importlib.util.LazyLoader from race \ 
conditions when multiple threads try to access attributes before the loading is \ 
complete.

gh-97959: Fix rendering class methods, bound methods, method and function \ 
aliases in pydoc. Class methods no longer have “method of builtins.type \ 
instance” note. Corresponding notes are now added for class and unbound \ 
methods. Method and function aliases now have references to the module or the \ 
class where the origin was defined if it differs from the current. Bound methods \ 
are now listed in the static methods section. Methods of builtin classes are now \ 
supported as well as methods of Python classes.

gh-112281: Allow creating union of types for typing.Annotated with unhashable \ 
metadata.

gh-111775: Fix importlib.resources.simple.ResourceHandle.open() for text mode, \ 
added missed stream argument.

gh-90095: Make .pdbrc and -c work with any valid pdb commands.

gh-107155: Fix incorrect output of help(x) where x is a lambda function, which \ 
has an __annotations__ dictionary attribute with a "return" key.

gh-105866: Fixed _get_slots bug which caused error when defining dataclasses \ 
with slots and a weakref_slot.

gh-60346: Fix ArgumentParser inconsistent with parse_known_args.

gh-100985: Update HTTPSConnection to consistently wrap IPv6 Addresses when using \ 
a proxy.

gh-100884: email: fix misfolding of comma in address-lists over multiple lines \ 
in combination with unicode encoding.

gh-95782: Fix io.BufferedReader.tell(), io.BufferedReader.seek(), \ 
_pyio.BufferedReader.tell(), io.BufferedRandom.tell(), io.BufferedRandom.seek() \ 
and _pyio.BufferedRandom.tell() being able to return negative offsets.

gh-96310: Fix a traceback in argparse when all options in a mutually exclusive \ 
group are suppressed.

gh-93205: Fixed a bug in logging.handlers.TimedRotatingFileHandler where \ 
multiple rotating handler instances pointing to files with the same name but \ 
different extensions would conflict and not delete the correct files.

bpo-44865: Add missing call to localization function in argparse.

bpo-43952: Fix multiprocessing.connection.Listener.accept() to accept empty \ 
bytes as authkey. Not accepting empty bytes as key causes it to hang \ 
indefinitely.

bpo-42125: linecache: get module name from __spec__ if available. This allows \ 
getting source code for the __main__ module when a custom loader is used.

gh-66543: Make mimetypes.guess_type() properly parsing of URLs with only a host \ 
name, URLs containing fragment or query, and filenames with only a UNC \ 
sharepoint on Windows. Based on patch by Dong-hee Na.

bpo-33775: Add ‘default’ and ‘version’ help text for localization in \ 
argparse.

Documentation

gh-115399: Document CVE-2023-52425 of Expat <2.6.0 under “XML \ 
vulnerabilities”.
gh-115233: Fix an example for LoggerAdapter in the Logging Cookbook.

Tests

gh-83434: Disable JUnit XML output (--junit-xml=FILE command line option) in \ 
regrtest when hunting for reference leaks (-R option). Patch by Victor Stinner.
gh-117187: Fix XML tests for vanilla Expat <2.6.0.
gh-116333: Tests of TLS related things (error codes, etc) were updated to be \ 
more lenient about specific error message strings and behaviors as seen in the \ 
BoringSSL and AWS-LC forks of OpenSSL.
gh-115979: Update test_importlib so that it passes under WASI SDK 21.
gh-112536: Add –tsan to test.regrtest for running TSAN tests in reasonable \ 
execution times. Patch by Donghee Na.
gh-116307: Added import helper isolated_modules as CleanImport does not remove \ 
modules imported during the context. Use it in importlib.resources tests to \ 
avoid leaving mod around to impede importlib.metadata tests.
gh-115720: Leak tests (-R, --huntrleaks) now show a summary of the number of \ 
leaks found in each iteration.
gh-115122: Add --bisect option to regrtest test runner: run failed tests with \ 
test.bisect_cmd to identify failing tests. Patch by Victor Stinner.
gh-115596: Fix ProgramPriorityTests in test_os permanently changing the process \ 
priority.

Build

gh-116313: Get WASI builds to work under wasmtime 18 w/ WASI 0.2/preview2 primitives.
gh-116117: Backport libb2’s PR #42 to fix compiling CPython on 32-bit Windows \ 
with clang-cl.
gh-115167: Avoid vendoring vcruntime140_threads.dll when building with Visual \ 
Studio 2022 version 17.8.
gh-112536: Add support for thread sanitizer (TSAN)

Windows

gh-117267: Ensure DirEntry.stat().st_ctime behaves consistently with os.stat() \ 
during the deprecation period of st_ctime by containing the same value as \ 
st_birthtime. After the deprecation period, st_ctime will be the metadata change \ 
time (or unavailable through DirEntry), and only st_birthtime will contain the \ 
creation time.
gh-116773: Fix instances of <_overlapped.Overlapped object at 0xXXX> still \ 
has pending operation at deallocation, the process may crash.
gh-91227: Fix the asyncio ProactorEventLoop implementation so that sending a \ 
datagram to an address that is not listening does not prevent receiving any more \ 
datagrams.
gh-115554: The installer now has more strict rules about updating the Python \ 
Launcher for Windows. In general, most users only have a single launcher \ 
installed and will see no difference. When multiple launchers have been \ 
installed, the option to install the launcher is disabled until all but one have \ 
been removed. Downgrading the launcher (which was never allowed) is now more \ 
obviously blocked.
gh-115543: Python Launcher for Windows can now detect Python 3.13 when installed \ 
from the Microsoft Store, and will install Python 3.12 by default when \ 
PYLAUNCHER_ALLOW_INSTALL is set.
gh-115049: Fixes py.exe launcher failing when run as users without user profiles.
gh-115009: Update Windows installer to use SQLite 3.45.1.
IDLE
gh-88516: On macOS show a proxy icon in the title bar of editor windows to match \ 
platform behaviour.

Tools/Demos

gh-113516: Don’t set LDSHARED when building for WASI.

C API

gh-117021: Fix integer overflow in PyLong_AsPid() on non-Windows 64-bit platforms.
gh-116869: Make the C API compatible with -Werror=declaration-after-statement \ 
compiler flag again. Patch by Victor Stinner.

Log message:
python312 py312-html-docs: updated to 3.12.2

Python 3.12.2 final

Security
gh-113659: Skip .pth files with names starting with a dot or hidden file attribute.
Core and Builtins
gh-114887: Changed socket type validation in create_datagram_endpoint() to \ 
accept all non-stream sockets. This fixes a regression in compatibility with raw \ 
sockets.

gh-114388: Fix a RuntimeWarning emitted when assign an integer-like value that \ 
is not an instance of int to an attribute that corresponds to a C struct member \ 
of type T_UINT and T_ULONG. Fix a double RuntimeWarning emitted when assign a \ 
negative integer value to an attribute that corresponds to a C struct member of \ 
type T_UINT.

gh-113703: Fix a regression in the codeop module that was causing it to \ 
incorrectly identify incomplete f-strings. Patch by Pablo Galindo

gh-89811: Check for a valid tp_version_tag before performing bytecode \ 
specializations that rely on this value being usable.

gh-113602: Fix an error that was causing the parser to try to overwrite existing \ 
errors and crashing in the process. Patch by Pablo Galindo

gh-113297: Fix segfault in the compiler on with statement with 19 context managers.

gh-106905: Use per AST-parser state rather than global state to track recursion \ 
depth within the AST parser to prevent potential race condition due to \ 
simultaneous parsing.

The issue primarily showed up in 3.11 by multithreaded users of ast.parse(). In \ 
3.12 a change to when garbage collection can be triggered prevented the race \ 
condition from occurring.

gh-112943: Correctly compute end column offsets for multiline tokens in the \ 
tokenize module. Patch by Pablo Galindo

gh-112716: Fix SystemError in the import statement and in __reduce__() methods \ 
of builtin types when __builtins__ is not a dict.

gh-94606: Fix UnicodeEncodeError when email.message.get_payload() reads a \ 
message with a Unicode surrogate character and the message content is not \ 
well-formed for surrogateescape encoding. Patch by Sidney Markowitz.
Library
gh-114965: Update bundled pip to 24.0
gh-114959: tarfile no longer ignores errors when trying to extract a directory \ 
on top of a file.
gh-109475: Fix support of explicit option value “–” in argparse (e.g. \ 
--option=--).
gh-110190: Fix ctypes structs with array on Windows ARM64 platform by setting \ 
MAX_STRUCT_SIZE to 32 in stgdict. Patch by Diego Russo
gh-113280: Fix a leak of open socket in rare cases when error occurred in \ 
ssl.SSLSocket creation.
gh-77749: email.policy.EmailPolicy.fold() now always encodes non-ASCII \ 
characters in headers if utf8 is false.
gh-114492: Make the result of termios.tcgetattr() reproducible on Alpine Linux. \ 
Previously it could leave a random garbage in some fields.
gh-113267: Revert changes in gh-106584 which made calls of TestResult methods \ 
startTest() and stopTest() unbalanced.
gh-75128: Ignore an OSError in asyncio.BaseEventLoop.create_server() when IPv6 \ 
is available but the interface cannot actually support it.
gh-114257: Dismiss the FileNotFound error in ctypes.util.find_library() and just \ 
return None on Linux.
gh-114328: The tty.setcbreak() and new tty.cfmakecbreak() no longer clears the \ 
terminal input ICRLF flag. This fixes a regression introduced in 3.12 that no \ 
longer matched how OSes define cbreak mode in their stty(1) manual pages.
gh-101438: Avoid reference cycle in ElementTree.iterparse. The iterator returned \ 
by ElementTree.iterparse may hold on to a file descriptor. The reference cycle \ 
prevented prompt clean-up of the file descriptor if the returned iterator was \ 
not exhausted.
gh-104522: OSError raised when run a subprocess now only has filename attribute \ 
set to cwd if the error was caused by a failed attempt to change the current \ 
directory.
gh-114149: Enum: correctly handle tuple subclasses in custom __new__.
gh-109534: Fix a reference leak in asyncio.selector_events.BaseSelectorEventLoop \ 
when SSL handshakes fail. Patch contributed by Jamie Phan.
gh-114077: Fix possible OverflowError in socket.socket.sendfile() when pass \ 
count larger than 2 GiB on 32-bit platform.
gh-114014: Fixed a bug in fractions.Fraction where an invalid string using d in \ 
the decimals part creates a different error compared to other invalid \ 
letters/characters. Patch by Jeremiah Gabriel Pascual.
gh-113951: Fix the behavior of tag_unbind() methods of tkinter.Text and \ 
tkinter.Canvas classes with three arguments. Previously, widget.tag_unbind(tag, \ 
sequence, funcid) destroyed the current binding for sequence, leaving sequence \ 
unbound, and deleted the funcid command. Now it removes only funcid from the \ 
binding for sequence, keeping other commands, and deletes the funcid command. It \ 
leaves sequence unbound only if funcid was the last bound command.
gh-113877: Fix tkinter method winfo_pathname() on 64-bit Windows.
gh-113661: unittest runner: Don’t exit 5 if tests were skipped. The intention \ 
of exiting 5 was to detect issues where the test suite wasn’t discovered at \ 
all. If we skipped tests, it was correctly discovered.
gh-113781: Silence unraisable AttributeError when warnings are emitted during \ 
Python finalization.
gh-112932: Restore the ability for zipfile to extractall from zip files with a \ 
“/” directory entry in them as is commonly added to zips by some wiki or bug \ 
tracker data exporters.
gh-113594: Fix UnicodeEncodeError in email when re-fold lines that contain \ 
unknown-8bit encoded part followed by non-unknown-8bit encoded part.
gh-113538: In asyncio.StreamReaderProtocol.connection_made(), there is callback \ 
that logs an error if the task wrapping the “connected callback” fails. This \ 
callback would itself fail if the task was cancelled. Prevent this by checking \ 
whether the task was cancelled first. If so, close the transport but don’t log \ 
an error.
gh-85567: Fix resource warnings for unclosed files in pickle and pickletools \ 
command line interfaces.
gh-101225: Increase the backlog for multiprocessing.connection.Listener objects \ 
created by multiprocessing.manager and multiprocessing.resource_sharer to \ 
significantly reduce the risk of getting a connection refused error when \ 
creating a multiprocessing.connection.Connection to them.
gh-113543: Make sure that webbrowser.MacOSXOSAScript sends webbrowser.open audit \ 
event.
gh-113028: When a second reference to a string appears in the input to pickle, \ 
and the Python implementation is in use, we are guaranteed that a single copy \ 
gets pickled and a single object is shared when reloaded. Previously, in \ 
protocol 0, when a string contained certain characters (e.g. newline) it \ 
resulted in duplicate objects.
gh-113421: Fix multiprocessing logger for %(filename)s.
gh-111784: Fix segfaults in the _elementtree module. Fix first segfault during \ 
deallocation of _elementtree.XMLParser instances by keeping strong reference to \ 
pyexpat module in module state for capsule lifetime. Fix second segfault which \ 
happens in the same deallocation process by keeping strong reference to \ 
_elementtree module in XMLParser structure for _elementtree module lifetime.
gh-113407: Fix import of unittest.mock when CPython is built without docstrings.
gh-113320: Fix regression in Python 3.12 where Protocol classes that were not \ 
marked as runtime-checkable would be unnecessarily introspected, potentially \ 
causing exceptions to be raised if the protocol had problematic members. Patch \ 
by Alex Waygood.
gh-113358: Fix rendering tracebacks for exceptions with a broken __getattr__.
gh-113214: Fix an AttributeError during asyncio SSL protocol aborts in \ 
SSL-over-SSL scenarios.
gh-113246: Update bundled pip to 23.3.2.
gh-113199: Make http.client.HTTPResponse.read1 and \ 
http.client.HTTPResponse.readline close IO after reading all data when content \ 
length is known. Patch by Illia Volochii.
gh-113188: Fix shutil.copymode() and shutil.copystat() on Windows. Previously \ 
they worked differenly if dst is a symbolic link: they modified the permission \ 
bits of dst itself rather than the file it points to if follow_symlinks is true \ 
or src is not a symbolic link, and did not modify the permission bits if \ 
follow_symlinks is false and src is a symbolic link.
gh-61648: Detect line numbers of properties in doctests.
gh-112559: signal.signal() and signal.getsignal() no longer call repr on \ 
callable handlers. asyncio.run() and asyncio.Runner.run() no longer call repr on \ 
the task results. Patch by Yilei Yang.
gh-110190: Fix ctypes structs with array on PPC64LE platform by setting \ 
MAX_STRUCT_SIZE to 64 in stgdict. Patch by Diego Russo.
gh-79429: Ignore FileNotFoundError when remove a temporary directory in the \ 
multiprocessing finalizer.
gh-81194: Fix a crash in socket.if_indextoname() with specific value (UINT_MAX). \ 
Fix an integer overflow in socket.if_indextoname() on 64-bit non-Windows \ 
platforms.
gh-112343: Improve handling of pdb convenience variables to avoid replacing \ 
string contents.
gh-111615: Fix a regression caused by a fix to gh-93162 whereby you couldn’t \ 
configure a QueueHandler without specifying handlers.
gh-111049: Fix crash during garbage collection of the io.BytesIO buffer object.
gh-110345: Show the Tcl/Tk patchlevel (rather than version) in tkinter._test().
gh-109858: Protect zipfile from “quoted-overlap” zipbomb. It now raises \ 
BadZipFile when try to read an entry that overlaps with other entry or central \ 
directory.
gh-114440: On Windows, closing the connection writer when cleaning up a broken \ 
multiprocessing.Queue queue is now done for all queues, rather than only in \ 
concurrent.futures manager thread. This can prevent a deadlock when a \ 
multiprocessing worker process terminates without cleaning up. This completes \ 
the backport of patches by Victor Stinner and Serhiy Storchaka.
gh-38807: Fix race condition in trace. Instead of checking if a directory exists \ 
and creating it, directly call os.makedirs() with the kwarg exist_ok=True.
gh-75705: Set unixfrom envelope in mailbox.mbox and mailbox.MMDF.
gh-106233: Fix stacklevel in InvalidTZPathWarning during zoneinfo module import.
gh-105102: Allow ctypes.Union to be nested in ctypes.Structure when the system \ 
endianness is the opposite of the classes.
gh-104282: Fix null pointer dereference in lzma._decode_filter_properties() due \ 
to improper handling of BCJ filters with properties of zero length. Patch by \ 
Radislav Chugunov.
gh-102512: When os.fork() is called from a foreign thread (aka _DummyThread), \ 
the type of the thread in a child process is changed to _MainThread. Also \ 
changed its name and daemonic status, it can be now joined.
bpo-35928: io.TextIOWrapper now correctly handles the decoding buffer after \ 
read() and write().
bpo-26791: shutil.move() now moves a symlink into a directory when that \ 
directory is the target of the symlink. This provides the same behavior as the \ 
mv shell command. The previous behavior raised an exception. Patch by Jeffrey \ 
Kintscher.
bpo-36959: Fix some error messages for invalid ISO format string combinations in \ 
strptime() that referred to directives not contained in the format string. Patch \ 
by Gordon P. Hemsley.
bpo-18060: Fixed a class inheritance issue that can cause segfaults when \ 
deriving two or more levels of subclasses from a base class of Structure or \ 
Union.
Documentation
gh-110746: Improved markup for valid options/values for methods \ 
ttk.treeview.column and ttk.treeview.heading, and for Layouts.
gh-95649: Document that the asyncio module contains code taken from v0.16.0 of \ 
the uvloop project, as well as the required MIT licensing information.
Tests
gh-109980: Fix test_tarfile_vs_tar in test_shutil for macOS, where system tar \ 
can include more information in the archive than shutil.make_archive.
gh-105089: Fix \ 
test.test_zipfile.test_core.TestWithDirectory.test_create_directory_with_write \ 
test in AIX by doing a bitwise AND of 0xFFFF on mode , so that it will be in \ 
sync with zinfo.external_attr
bpo-40648: Test modes that file can get with chmod() on Windows.
Build
gh-112305: Fixed the check-clean-src step performed on out of tree builds to \ 
detect errant $(srcdir)/Python/frozen_modules/*.h files and recommend \ 
appropriate source tree cleanup steps to get a working build again.
gh-112867: Fix the build for the case that WITH_PYMALLOC_RADIX_TREE=0 set.
bpo-11102: The os.major(), os.makedev(), and os.minor() functions are now \ 
available on HP-UX v3.
bpo-36351: Do not set ipv6type when cross-compiling.
Windows
gh-109991: Update Windows build to use OpenSSL 3.0.13.
gh-111239: Update Windows builds to use zlib v1.3.1.
gh-100107: The py.exe launcher will no longer attempt to run the Microsoft Store \ 
redirector when launching a script containing a /usr/bin/env shebang
gh-114096: Process privileges that are activated for creating directory \ 
junctions are now restored afterwards, avoiding behaviour changes in other parts \ 
of the program.
gh-111877: os.stat() calls were returning incorrect time values for files that \ 
could not be accessed directly.
gh-113009: multiprocessing: On Windows, fix a race condition in \ 
Process.terminate(): no longer set the returncode attribute to always call \ 
WaitForSingleObject() in Process.wait(). Previously, sometimes the process was \ 
still running after TerminateProcess() even if GetExitCodeProcess() is not \ 
STILL_ACTIVE. Patch by Victor Stinner.
gh-87868: Correctly sort and remove duplicate environment variables in \ 
_winapi.CreateProcess().
bpo-37308: Fix mojibake in mmap.mmap when using a non-ASCII tagname argument on \ 
Windows.
macOS
gh-115009: Update macOS installer to use SQLite 3.45.1.
gh-109991: Update macOS installer to use OpenSSL 3.0.13.
gh-110459: Running configure ... --with-openssl-rpath=X/Y/Z no longer fails to \ 
detect OpenSSL on macOS.
gh-74573: Document that dbm.ndbm can silently corrupt DBM files on updates when \ 
exceeding undocumented platform limits, and can crash (segmentation fault) when \ 
reading such a corrupted file. (FB8919203)
gh-65701: The freeze tool doesn’t work with framework builds of Python. \ 
Document this and bail out early when running the tool with such a build.
gh-108269: Set CFBundleAllowMixedLocalizations to true in the Info.plist for the \ 
framework, embedded Python.app and IDLE.app with framework installs on macOS. \ 
This allows applications to pick up the user’s preferred locale when that’s \ 
different from english.
gh-102362: Make sure the result of sysconfig.get_plaform() includes at least a \ 
major and minor versions, even if MACOSX_DEPLOYMENT_TARGET is set to only a \ 
major version during build to match the format expected by pip.
gh-110017: Disable a signal handling stress test on macOS due to a bug in macOS \ 
(FB13453490).
gh-110820: Make sure the preprocessor definitions for ALIGNOF_MAX_ALIGN_T, \ 
SIZEOF_LONG_DOUBLE and HAVE_GCC_ASM_FOR_X64 are correct for Universal 2 builds \ 
on macOS.
IDLE
gh-96905: In idlelib code, stop redefining built-ins ‘dict’ and ‘object’.
gh-72284: Improve the lists of features, editor key bindings, and shell key \ 
bingings in the IDLE doc.
gh-113903: Fix rare failure of test.test_idle, in test_configdialog.
gh-113729: Fix the “Help -> IDLE Doc” menu bug in 3.11.7 and 3.12.1.
gh-113269: Fix test_editor hang on macOS Catalina.
gh-112898: Fix processing unsaved files when quitting IDLE on macOS.
gh-103820: Revise IDLE bindings so that events from mouse button 4/5 on non-X11 \ 
windowing systems (i.e. Win32 and Aqua) are not mistaken for scrolling.
bpo-13586: Enter the selected text when opening the “Replace” dialog.
Tools/Demos
gh-109991: Update GitHub CI workflows to use OpenSSL 3.0.13 and multissltests to \ 
use 1.1.1w, 3.0.13, 3.1.5, and 3.2.1.
gh-115015: Fix a bug in Argument Clinic that generated incorrect code for \ 
methods with no parameters that use the METH_METHOD | METH_FASTCALL | \ 
METH_KEYWORDS calling convention. Only the positional parameter count was \ 
checked; any keyword argument passed would be silently accepted.

Log message:
python312 py312-html-docs: updated to 3.12.1

Python 3.12.1 final

Core and Builtins

gh-112125: Fix None.__ne__(None) returning NotImplemented instead of False
gh-112625: Fixes a bug where a bytearray object could be cleared while iterating \ 
over an argument in the bytearray.join() method that could result in reading \ 
memory after it was freed.
gh-105967: Workaround a bug in Apple’s macOS platform zlib library where \ 
zlib.crc32() and binascii.crc32() could produce incorrect results on \ 
multi-gigabyte inputs. Including when using zipfile on zips containing large \ 
data.
gh-112356: Stopped erroneously deleting a LOAD_NULL bytecode instruction when \ 
optimized twice.
gh-111058: Change coro.cr_frame/gen.gi_frame to return None after the \ 
coroutine/generator has been closed. This fixes a bug where getcoroutinestate() \ 
and getgeneratorstate() return the wrong state for a closed coroutine/generator.
gh-112388: Fix an error that was causing the parser to try to overwrite \ 
tokenizer errors. Patch by pablo Galindo
gh-112387: Fix error positions for decoded strings with backwards tokenize \ 
errors. Patch by Pablo Galindo
gh-112367: Avoid undefined behaviour when using the perf trampolines by not \ 
freeing the code arenas until shutdown. Patch by Pablo Galindo
gh-112243: Don’t include comments in f-string debug expressions. Patch by \ 
Pablo Galindo
gh-112266: Change docstrings of __dict__ and __weakref__.
gh-111654: Fix runtime crash when some error happens in opcode \ 
LOAD_FROM_DICT_OR_DEREF.
gh-109181: Speed up Traceback object creation by lazily compute the line number. \ 
Patch by Pablo Galindo
gh-102388: Fix a bug where iso2022_jp_3 and iso2022_jp_2004 codecs read out of bounds
gh-111366: Fix an issue in the codeop that was causing SyntaxError exceptions \ 
raised in the presence of invalid syntax to not contain precise error messages. \ 
Patch by Pablo Galindo
gh-111380: Fix a bug that was causing SyntaxWarning to appear twice when parsing \ 
if invalid syntax is encountered later. Patch by Pablo galindo
gh-94438: Fix a regression that prevented jumping across is None and is not None \ 
when debugging. Patch by Savannah Ostrowski.
gh-110938: Fix error messages for indented blocks with functions and classes \ 
with generic type parameters. Patch by Pablo Galindo
gh-109894: Fixed crash due to improperly initialized static MemoryError in \ 
subinterpreter.
gh-110782: Fix crash when typing.TypeVar is constructed with a keyword argument. \ 
Patch by Jelle Zijlstra.
gh-110696: Fix incorrect error message for invalid argument unpacking. Patch by \ 
Pablo Galindo
gh-110543: Fix regression in Python 3.12 where types.CodeType.replace() would \ 
produce a broken code object if called on a module or class code object that \ 
contains a comprehension. Patch by Jelle Zijlstra.
gh-110514: Add PY_THROW to sys.setprofile() events
gh-110455: Guard assert(tstate->thread_id > 0) with #ifndef \ 
HAVE_PTHREAD_STUBS. This allows for for pydebug builds to work under WASI which \ 
(currently) lacks thread support.
gh-110259: Correctly identify the format spec in f-strings (with single or \ 
triple quotes) that have multiple lines in the expression part and include a \ 
formatting spec. Patch by Pablo Galindo
gh-110237: Fix missing error checks for calls to PyList_Append in _PyEval_MatchClass.
gh-109889: Fix the compiler’s redundant NOP detection algorithm to skip over \ 
NOPs with no line number when looking for the next instruction’s lineno.
gh-109853: sys.path[0] is now set correctly for subinterpreters.
gh-105716: Subinterpreters now correctly handle the case where they have threads \ 
running in the background. Before, such threads would interfere with cleaning up \ 
and destroying them, as well as prevent running another script.
gh-109793: The main thread no longer exits prematurely when a subinterpreter is \ 
cleaned up during runtime finalization. The bug was a problem particularly \ 
because, when triggered, the Python process would always return with a 0 \ 
exitcode, even if it failed.
gh-109596: Fix some tokens in the grammar that were incorrectly marked as soft \ 
keywords. Also fix some repeated rule names and ensure that repeated rules are \ 
not allowed. Patch by Pablo Galindo
gh-109351: Fix crash when compiling an invalid AST involving a named (walrus) \ 
expression.
gh-109216: Fix possible memory leak in BUILD_MAP.
gh-109207: Fix a SystemError in __repr__ of symtable entry object.
gh-109179: Fix bug where the C traceback display drops notes from SyntaxError.
gh-109052: Use the base opcode when comparing code objects to avoid interference \ 
from instrumentation
gh-88943: Improve syntax error for non-ASCII character that follows a numerical \ 
literal. It now points on the invalid non-ASCII character, not on the valid \ 
numerical literal.
gh-106931: Statically allocated string objects are now interned globally instead \ 
of per-interpreter. This fixes a situation where such a string would only be \ 
interned in a single interpreter. Normal string objects are unaffected.

Library

gh-79325: Fix an infinite recursion error in tempfile.TemporaryDirectory() \ 
cleanup on Windows.

gh-112645: Remove deprecation error on passing onerror to shutil.rmtree().

gh-112618: Fix a caching bug relating to typing.Annotated. Annotated[str, True] \ 
is no longer identical to Annotated[str, 1].

gh-112334: Fixed a performance regression in 3.12’s subprocess on Linux where \ 
it would no longer use the fast-path vfork() system call when it should have due \ 
to a logic bug, instead always falling back to the safe but slower fork().

Also fixed a related 3.12 security regression: If a value of extra_groups=[] was \ 
passed to subprocess.Popen or related APIs, the underlying setgroups(0, NULL) \ 
system call to clear the groups list would not be made in the child process \ 
prior to exec(). This has been assigned CVE-2023-6507.

This was identified via code inspection in the process of fixing the first bug.

gh-110190: Fix ctypes structs with array on Arm platform by setting \ 
MAX_STRUCT_SIZE to 32 in stgdict. Patch by Diego Russo.

gh-112578: Fix a spurious RuntimeWarning when executing the zipfile module.

gh-112509: Fix edge cases that could cause a key to be present in both the \ 
__required_keys__ and __optional_keys__ attributes of a typing.TypedDict. Patch \ 
by Jelle Zijlstra.

gh-112414: Fix regression in Python 3.12 where calling repr() on a module that \ 
had been imported using a custom loader could fail with AttributeError. Patch by \ 
Alex Waygood.

gh-112358: Revert change to struct.Struct initialization that broke some cases \ 
of subclassing.

gh-94722: Fix bug where comparison between instances of DocTest fails if one of \ 
them has None as its lineno.

gh-112105: Make readline.set_completer_delims() work with libedit

gh-111942: Fix SystemError in the TextIOWrapper constructor with non-encodable \ 
“errors” argument in non-debug mode.

gh-109538: Issue warning message instead of having RuntimeError be displayed \ 
when event loop has already been closed at StreamWriter.__del__().

gh-111942: Fix crashes in io.TextIOWrapper.reconfigure() when pass invalid \ 
arguments, e.g. non-string encoding.

gh-111460: curses: restore wide character support (including curses.unget_wch() \ 
and get_wch()) on macOS, which was unavailable due to a regression in Python \ 
3.12.

gh-103791: contextlib.suppress now supports suppressing exceptions raised as \ 
part of a BaseExceptionGroup, in addition to the recent support for \ 
ExceptionGroup.

gh-111804: Remove posix.fallocate() under WASI as the underlying \ 
posix_fallocate() is not available in WASI preview2.

gh-111841: Fix truncating arguments on an embedded null character in os.putenv() \ 
and os.unsetenv() on Windows.

gh-111541: Fix doctest for SyntaxError not-builtin subclasses.

gh-110894: Call loop exception handler for exceptions in client_connected_cb of \ 
asyncio.start_server() so that applications can handle it. Patch by Kumar \ 
Aditya.

gh-111531: Fix reference leaks in bind_class() and bind_all() methods of tkinter \ 
widgets.

gh-111356: Added io.text_encoding(), io.DEFAULT_BUFFER_SIZE, and \ 
io.IncrementalNewlineDecoder to io.__all__.

gh-111342: Fixed typo in math.sumprod().

gh-68166: Remove mention of not supported “vsapi” element type in \ 
tkinter.ttk.Style.element_create(). Add tests for element_create() and other \ 
ttk.Style methods. Add examples for element_create() in the documentation.

gh-75666: Fix the behavior of tkinter widget’s unbind() method with two \ 
arguments. Previously, widget.unbind(sequence, funcid) destroyed the current \ 
binding for sequence, leaving sequence unbound, and deleted the funcid command. \ 
Now it removes only funcid from the binding for sequence, keeping other \ 
commands, and deletes the funcid command. It leaves sequence unbound only if \ 
funcid was the last bound command.

gh-79033: Another attempt at fixing asyncio.Server.wait_closed(). It now blocks \ 
until both conditions are true: the server is closed, and there are no more \ 
active connections. (This means that in some cases where in 3.12.0 this function \ 
would incorrectly have returned immediately, it will now block; in particular, \ 
when there are no active connections but the server hasn’t been closed yet.)

gh-111295: Fix time not checking for errors when initializing.

gh-111253: Add error checking during _socket module init.

gh-111251: Fix _blake2 not checking for errors when initializing.

gh-111174: Fix crash in io.BytesIO.getbuffer() called repeatedly for empty BytesIO.

gh-111187: Postpone removal version for locale.getdefaultlocale() to Python 3.15.

gh-111159: Fix doctest output comparison for exceptions with notes.

gh-110910: Fix invalid state handling in asyncio.TaskGroup and asyncio.Timeout. \ 
They now raise proper RuntimeError if they are improperly used and are left in \ 
consistent state after this.

gh-111092: Make turtledemo run without default root enabled.

gh-110488: Fix a couple of issues in pathlib.PurePath.with_name(): a single dot \ 
was incorrectly considered a valid name, and in PureWindowsPath, a name with an \ 
NTFS alternate data stream, like a:b, was incorrectly considered invalid.

gh-110392: Fix tty.setraw() and tty.setcbreak(): previously they returned \ 
partially modified list of the original tty attributes. tty.cfmakeraw() and \ 
tty.cfmakecbreak() now make a copy of the list of special characters before \ 
modifying it.

gh-110590: Fix a bug in _sre.compile() where TypeError would be overwritten by \ 
OverflowError when the code argument was a list of non-ints.

gh-65052: Prevent pdb from crashing when trying to display undisplayable objects

gh-110519: Deprecation warning about non-integer number in gettext now alwais \ 
refers to the line in the user code where gettext function or method is used. \ 
Previously it could refer to a line in gettext code.

gh-110395: Ensure that select.kqueue() objects correctly appear as closed in \ 
forked children, to prevent operations on an invalid file descriptor.

gh-110378: contextmanager() and asynccontextmanager() context managers now close \ 
an invalid underlying generator object that yields more then one value.

gh-110365: Fix termios.tcsetattr() bug that was overwritting existing errors \ 
during parsing integers from term list.

gh-109653: Fix a Python 3.12 regression in the import time of random. Patch by \ 
Alex Waygood.

gh-110196: Add __reduce__ method to IPv6Address in order to keep scope_id

gh-110036: On Windows, multiprocessing Popen.terminate() now catchs \ 
PermissionError and get the process exit code. If the process is still running, \ 
raise again the PermissionError. Otherwise, the process terminated as expected: \ 
store its exit code. Patch by Victor Stinner.

gh-110038: Fixed an issue that caused KqueueSelector.select() to not return all \ 
the ready events in some cases when a file descriptor is registered for both \ 
read and write.

gh-109631: re functions such as re.findall(), re.split(), re.search() and \ 
re.sub() which perform short repeated matches can now be interrupted by user.

gh-109747: Improve errors for unsupported look-behind patterns. Now re.error is \ 
raised instead of OverflowError or RuntimeError for too large width of \ 
look-behind pattern.

gh-109818: Fix reprlib.recursive_repr() not copying __type_params__ from \ 
decorated function.

gh-109047: concurrent.futures: The executor manager thread now catches \ 
exceptions when adding an item to the call queue. During Python finalization, \ 
creating a new thread can now raise RuntimeError. Catch the exception and call \ 
terminate_broken() in this case. Patch by Victor Stinner.

gh-109782: Ensure the signature of os.path.isdir() is identical on all \ 
platforms. Patch by Amin Alaee.

gh-109590: shutil.which() will prefer files with an extension in PATHEXT if the \ 
given mode includes os.X_OK on win32. If no PATHEXT match is found, a file \ 
without an extension in PATHEXT can be returned. This change will have \ 
shutil.which() act more similarly to previous behavior in Python 3.11.

gh-109786: Fix possible reference leaks and crash when re-enter the __next__() \ 
method of itertools.pairwise.

gh-109593: Avoid deadlocking on a reentrant call to the multiprocessing resource \ 
tracker. Such a reentrant call, though unlikely, can happen if a GC pass invokes \ 
the finalizer for a multiprocessing object such as SemLock.

gh-109613: Fix os.stat() and os.DirEntry.stat(): check for exceptions. \ 
Previously, on Python built in debug mode, these functions could trigger a fatal \ 
Python error (and abort the process) when a function succeeded with an exception \ 
set. Patch by Victor Stinner.

gh-109375: The pdb alias command now prevents registering aliases without arguments.

gh-107219: Fix a race condition in concurrent.futures. When a process in the \ 
process pool was terminated abruptly (while the future was running or pending), \ 
close the connection write end. If the call queue is blocked on sending bytes to \ 
a worker process, closing the connection write end interrupts the send, so the \ 
queue can be closed. Patch by Victor Stinner.

gh-50644: Attempts to pickle or create a shallow or deep copy of codecs streams \ 
now raise a TypeError. Previously, copying failed with a RecursionError, while \ 
pickling produced wrong results that eventually caused unpickling to fail with a \ 
RecursionError.

gh-108987: Fix _thread.start_new_thread() race condition. If a thread is created \ 
during Python finalization, the newly spawned thread now exits immediately \ 
instead of trying to access freed memory and lead to a crash. Patch by Victor \ 
Stinner.

gh-108791: Improved error handling in pdb command line interface, making it \ 
produce more concise error messages.

gh-105829: Fix concurrent.futures.ProcessPoolExecutor deadlock

gh-106584: Fix exit code for unittest if all tests are skipped. Patch by Egor \ 
Eliseev.

gh-102956: Fix returning of empty byte strings after seek in zipfile module

gh-84867: unittest.TestLoader no longer loads test cases from exact \ 
unittest.TestCase and unittest.FunctionTestCase classes.

gh-91133: Fix a bug in tempfile.TemporaryDirectory cleanup, which now no longer \ 
dereferences symlinks when working around file system permission errors.

gh-73561: Omit the interface scope from an IPv6 address when used as Host header \ 
by http.client.

gh-86826: zipinfo now supports the full range of values in the TZ string \ 
determined by RFC 8536 and detects all invalid formats. Both Python and C \ 
implementations now raise exceptions of the same type on invalid data.

bpo-43153: On Windows, tempfile.TemporaryDirectory previously masked a \ 
PermissionError with NotADirectoryError during directory cleanup. It now \ 
correctly raises PermissionError if errors are not ignored. Patch by Andrei \ 
Kulakov and Ken Jin.

bpo-35332: The shutil.rmtree() function now ignores errors when calling \ 
os.close() when ignore_errors is True, and os.close() no longer retried after \ 
error.

bpo-41422: Fixed memory leaks of pickle.Pickler and pickle.Unpickler involving \ 
cyclic references via the internal memo mapping.

bpo-40262: The ssl.SSLSocket.recv_into() method no longer requires the buffer \ 
argument to implement __len__ and supports buffers with arbitrary item size.

Documentation

gh-111699: Relocate smtpd deprecation notice to its own section rather than \ 
under locale in What’s New in Python 3.12 document
gh-108826: dis module command-line interface is now mentioned in documentation.

Tests

gh-112769: The tests now correctly compare zlib version when \ 
zlib.ZLIB_RUNTIME_VERSION contains non-integer suffixes. For example zlib-ng \ 
defines the version as 1.3.0.zlib-ng.
gh-110367: Make regrtest --verbose3 option compatible with --huntrleaks -jN \ 
options. The ./python -m test -j1 -R 3:3 --verbose3 command now works as \ 
expected. Patch by Victor Stinner.
gh-111165: Remove no longer used functions run_unittest() and run_doctest() from \ 
the test.support module.
gh-110932: Fix regrtest if the SOURCE_DATE_EPOCH environment variable is \ 
defined: use the variable value as the random seed. Patch by Victor Stinner.
gh-110995: test_gdb: Fix detection of gdb built without Python scripting \ 
support. Patch by Victor Stinner.
gh-110918: Test case matching patterns specified by options --match, --ignore, \ 
--matchfile and --ignorefile are now tested in the order of specification, and \ 
the last match determines whether the test case be run or ignored.
gh-110647: Fix test_stress_modifying_handlers() of test_signal. Patch by Victor \ 
Stinner.
gh-103053: Fix test_tools.test_freeze on FreeBSD: run “make distclean” \ 
instead of “make clean” in the copied source directory to remove also the \ 
“python” program. Patch by Victor Stinner.
gh-110167: Fix a deadlock in test_socket when server fails with a timeout but \ 
the client is still running in its thread. Don’t hold a lock to call cleanup \ 
functions in doCleanups(). One of the cleanup function waits until the client \ 
completes, whereas the client could deadlock if it called addCleanup() in such \ 
situation. Patch by Victor Stinner.
gh-110388: Add tests for tty.
gh-81002: Add tests for termios.
gh-110267: Add tests for pickling and copying PyStructSequence objects. Patched \ 
by Xuehai Pan.
gh-110031: Skip test_threading tests using thread+fork if Python is built with \ 
Address Sanitizer (ASAN). Patch by Victor Stinner.
gh-110088: Fix test_asyncio timeouts: don’t measure the maximum duration, a \ 
test should not measure a CI performance. Only measure the minimum duration when \ 
a task has a timeout or delay. Add CLOCK_RES to test_asyncio.utils. Patch by \ 
Victor Stinner.
gh-109974: Fix race conditions in test_threading lock tests. Wait until a \ 
condition is met rather than using time.sleep() with a hardcoded number of \ 
seconds. Patch by Victor Stinner.
gh-110033: Fix test_interprocess_signal() of test_signal. Make sure that the \ 
subprocess.Popen object is deleted before the test raising an exception in a \ 
signal handler. Otherwise, Popen.__del__() can get the exception which is logged \ 
as Exception ignored in: ... and the test fails. Patch by Victor Stinner.
gh-109594: Fix test_timeout() of test_concurrent_futures.test_wait. Remove the \ 
future which may or may not complete depending if it takes longer than the \ 
timeout ot not. Keep the second future which does not complete before wait() \ 
timeout. Patch by Victor Stinner.
gh-109972: Split test_gdb.py file into a test_gdb package made of multiple \ 
tests, so tests can now be run in parallel. Patch by Victor Stinner.
gh-103053: Skip test_freeze_simple_script() of test_tools.test_freeze if Python \ 
is built with ./configure --enable-optimizations, which means with Profile \ 
Guided Optimization (PGO): it just makes the test too slow. The freeze tool is \ 
tested by many other CIs with other (faster) compiler flags. Patch by Victor \ 
Stinner.
gh-109580: Skip test_perf_profiler if Python is built with ASAN, MSAN or UBSAN \ 
sanitizer. Python does crash randomly in this test on such build. Patch by \ 
Victor Stinner.
gh-104736: Fix test_gdb on Python built with LLVM clang 16 on Linux ppc64le (ex: \ 
Fedora 38). Search patterns in gdb “bt” command output to detect when gdb \ 
fails to retrieve the traceback. For example, skip a test if Backtrace stopped: \ 
frame did not save the PC is found. Patch by Victor Stinner.
gh-108927: Fixed order dependence in running tests in the same process when a \ 
test that has submodules (e.g. test_importlib) follows a test that imports its \ 
submodule (e.g. test_importlib.util) and precedes a test (e.g. test_unittest or \ 
test_compileall) that uses that submodule.

Build

gh-112088: Add Tools/build/regen-configure.sh script to regenerate the configure \ 
with an Ubuntu container image. The quay.io/tiran/cpython_autoconf:271 container \ 
image (tiran/cpython_autoconf) is no longer used. Patch by Victor Stinner.
gh-111046: For wasi-threads, memory is now exported to fix compatibility issues \ 
with some wasm runtimes.
gh-103053: “make check-clean-src” now also checks if the “python” \ 
program is found in the source directory: fail with an error if it does exist. \ 
Patch by Victor Stinner.
gh-109191: Fix compile error when building with recent versions of libedit.

Windows

gh-111856: Fixes fstat() on file systems that do not support file ID requests. \ 
This includes FAT32 and exFAT.
gh-111293: Fix os.DirEntry.inode dropping higher 64 bits of a file id on some \ 
filesystems on Windows.
gh-110913: WindowsConsoleIO now correctly chunks large buffers without splitting \ 
up UTF-8 sequences.
gh-110437: Allows overriding the source of VC redistributables so that releases \ 
can be guaranteed to never downgrade between updates.
gh-109286: Update Windows installer to use SQLite 3.43.1.

macOS

gh-109981: Use /dev/fd on macOS to determine the number of open files in \ 
test.support.os_helper.fd_count to avoid a crash with “guarded” file \ 
descriptors when probing for open files.
gh-110950: Update macOS installer to include an upstream Tcl/Tk fix for the \ 
Secure coding is not enabled for restorable state! warning encountered in \ 
Tkinter on macOS 14 Sonoma.
gh-111015: Ensure that IDLE.app and Python Launcher.app are installed with \ 
appropriate permissions on macOS builds.
gh-109286: Update macOS installer to use SQLite 3.43.1.
gh-71383: Update macOS installer to include an upstream Tcl/Tk fix for the \ 
ttk::ThemeChanged error encountered in Tkinter.
gh-92603: Update macOS installer to include a fix accepted by upstream Tcl/Tk \ 
for a crash encountered after the first tkinter.Tk() instance is destroyed.

IDLE

bpo-35668: Add docstrings to the IDLE debugger module. Fix two bugs: initialize \ 
Idb.botframe (should be in Bdb); in Idb.in_rpc_code, check whether prev_frame is \ 
None before trying to use it. Greatly expand test_debugger.

C API

gh-106560: Fix redundant declarations in the public C API. Declare PyBool_Type \ 
and PyLong_Type only once. Patch by Victor Stinner.
gh-112438: Fix support of format units “es”, “et”, “es#”, and \ 
“et#” in nested tuples in PyArg_ParseTuple()-like functions.
gh-109521: PyImport_GetImporter() now sets RuntimeError if it fails to get \ 
sys.path_hooks or sys.path_importer_cache or they are not list and dict \ 
correspondingly. Previously it could return NULL without setting error in \ 
obscure cases, crash or raise SystemError if these attributes have wrong type.

Log message:
python312 py312-html-docs: added version 3.12.0

Python 3.12

New syntax features:

PEP 695, type parameter syntax and the type statement

New grammar features:

PEP 701, f-strings in the grammar

Interpreter improvements:

PEP 684, a unique per-interpreter GIL
PEP 669, low impact monitoring
Improved ‘Did you mean …’ suggestions for NameError, ImportError, and \ 
SyntaxError exceptions

Python data model improvements:

PEP 688, using the buffer protocol from Python

Significant improvements in the standard library:

The pathlib.Path class now supports subclassing
The os module received several improvements for Windows support
A command-line interface has been added to the sqlite3 module
isinstance() checks against runtime-checkable protocols enjoy a speed up of \ 
between two and 20 times
The asyncio package has had a number of performance improvements, with some \ 
benchmarks showing a 75% speed up.
A command-line interface has been added to the uuid module
Due to the changes in PEP 701, producing tokens via the tokenize module is up to \ 
up to 64% faster.

Security improvements:

Replace the builtin hashlib implementations of SHA1, SHA3, SHA2-384, SHA2-512, \ 
and MD5 with formally verified code from the HACL* project. These builtin \ 
implementations remain as fallbacks that are only used when OpenSSL does not \ 
provide them.

C API improvements:

PEP 697, unstable C API tier
PEP 683, immortal objects

CPython implementation improvements:

PEP 709, comprehension inlining
CPython support for the Linux perf profiler
Implement stack overflow protection on supported platforms

New typing features:

PEP 692, using TypedDict to annotate **kwargs
PEP 698, typing.override() decorator

Important deprecations, removals or restrictions:

PEP 623: Remove wstr from Unicode objects in Python’s C API, reducing the size \ 
of every str object by at least 8 bytes.
PEP 632: Remove the distutils package. See the migration guide for advice \ 
replacing the APIs it provided. The third-party Setuptools package continues to \ 
provide distutils, if you still require it in Python 3.12 and beyond.
gh-95299: Do not pre-install setuptools in virtual environments created with \ 
venv. This means that distutils, setuptools, pkg_resources, and easy_install \ 
will no longer available by default; to access these run pip install setuptools \ 
in the activated virtual environment.
The asynchat, asyncore, and imp modules have been removed, along with several \ 
unittest.TestCase method aliases.