Log Message:
python39 py39-html-docs: updated to 3.9.13

Python 3.9.13

Core and Builtins

gh-92311: Fixed a bug where setting frame.f_lineno to jump over a list \ 
comprehension could misbehave or crash.
gh-92112: Fix crash triggered by an evil custom mro() on a metaclass.
gh-92036: Fix a crash in subinterpreters related to the garbage collector. When \ 
a subinterpreter is deleted, untrack all objects tracked by its GC. To prevent a \ 
crash in deallocator functions expecting objects to be tracked by the GC, leak a \ 
strong reference to these objects on purpose, so they are never deleted and \ 
their deallocator functions are not called. Patch by Victor Stinner.
gh-91421: Fix a potential integer overflow in _Py_DecodeUTF8Ex.
bpo-46775: Some Windows system error codes(>= 10000) are now mapped into the \ 
correct errno and may now raise a subclass of OSError. Patch by Dong-hee Na.
bpo-46962: Classes and functions that unconditionally declared their docstrings \ 
ignoring the --without-doc-strings compilation flag no longer do so.

The classes affected are pickle.PickleBuffer, testcapi.RecursingInfinitelyError, \ 
and types.GenericAlias.

The functions affected are 24 methods in ctypes.

Patch by Oleg Iarygin.
bpo-36819: Fix crashes in built-in encoders with error handlers that return \ 
position less or equal than the starting position of non-encodable characters.

Library

gh-91581: utcfromtimestamp() no longer attempts to resolve fold in the pure \ 
Python implementation, since the fold is never 1 in UTC. In addition to being \ 
slightly faster in the common case, this also prevents some errors when the \ 
timestamp is close to datetime.min. Patch by Paul Ganssle.
gh-92530: Fix an issue that occurred after interrupting threading.Condition.notify().
gh-92049: Forbid pickling constants re._constants.SUCCESS etc. Previously, \ 
pickling did not fail, but the result could not be unpickled.
bpo-47029: Always close the read end of the pipe used by multiprocessing.Queue \ 
after the last write of buffered data to the write end of the pipe to avoid \ 
BrokenPipeError at garbage collection and at multiprocessing.Queue.close() \ 
calls. Patch by Géry Ogam.
gh-91910: Add missing f prefix to f-strings in error messages from the \ 
multiprocessing and asyncio modules.
gh-91810: ElementTree method write() and function tostring() now use the text \ 
file’s encoding (“UTF-8” if not available) instead of locale encoding in \ 
XML declaration when encoding="unicode" is specified.
gh-91832: Add required attribute to argparse.Action repr output.
gh-91734: Fix OSS audio support on Solaris.
gh-91700: Compilation of regular expression containing a conditional expression \ 
(?(group)...) now raises an appropriate re.error if the group number refers to \ 
not defined group. Previously an internal RuntimeError was raised.
gh-91676: Fix unittest.IsolatedAsyncioTestCase to shutdown the per test event \ 
loop executor before returning from its run method so that a not yet stopped or \ 
garbage collected executor state does not persist beyond the test.
gh-90568: Parsing \N escapes of Unicode Named Character Sequences in a regular \ 
expression raises now re.error instead of TypeError.
gh-91595: Fix the comparison of character and integer inside \ 
Tools.gdb.libpython.write_repr(). Patch by Yu Liu.
gh-90622: Worker processes for concurrent.futures.ProcessPoolExecutor are no \ 
longer spawned on demand (a feature added in 3.9) when the multiprocessing \ 
context start method is "fork" as that can lead to deadlocks in the \ 
child processes due to a fork happening while threads are running.
gh-91575: Update case-insensitive matching in the re module to the latest \ 
Unicode version.
gh-91581: Remove an unhandled error case in the C implementation of calls to \ 
datetime.fromtimestamp with no time zone (i.e. getting a local time from an \ 
epoch timestamp). This should have no user-facing effect other than giving a \ 
possibly more accurate error message when called with timestamps that fall on \ 
10000-01-01 in the local time. Patch by Paul Ganssle.
bpo-34480: Fix a bug where _markupbase raised an UnboundLocalError when an \ 
invalid keyword was found in marked section. Patch by Marek Suscak.
bpo-27929: Fix asyncio.loop.sock_connect() to only resolve names for \ 
socket.AF_INET or socket.AF_INET6 families. Resolution may not make sense for \ 
other families, like socket.AF_BLUETOOTH and socket.AF_UNIX.
bpo-43323: Fix errors in the email module if the charset itself contains \ 
undecodable/unencodable characters.
bpo-46787: Fix concurrent.futures.ProcessPoolExecutor exception memory leak
bpo-46415: Fix ipaddress.ip_{address,interface,network} raising TypeError \ 
instead of ValueError if given invalid tuple as address parameter.
bpo-44911: IsolatedAsyncioTestCase will no longer throw an exception while \ 
cancelling leaked tasks. Patch by Bar Harel.
bpo-44493: Add missing terminated NUL in sockaddr_un’s length

This was potentially observable when using non-abstract AF_UNIX datagram sockets \ 
to processes written in another programming language.
bpo-42627: Fix incorrect parsing of Windows registry proxy settings
bpo-36073: Raise ProgrammingError instead of segfaulting on recursive usage of \ 
cursors in sqlite3 converters. Patch by Sergey Fedoseev.

Documentation

gh-91888: Add a new gh role to the documentation to link to GitHub issues.
gh-91783: Document security issues concerning the use of the function \ 
shutil.unpack_archive()
gh-91547: Remove “Undocumented modules” page.
bpo-44347: Clarify the meaning of dirs_exist_ok, a kwarg of shutil.copytree().
bpo-38668: Update the introduction to documentation for os.path to remove \ 
warnings that became irrelevant after the implementations of PEP 383 and PEP \ 
529.
bpo-47138: Pin Jinja to a version compatible with Sphinx version 2.4.4.
bpo-46962: All docstrings in code snippets are now wrapped into PyDoc_STR() to \ 
follow the guideline of PEP 7’s Documentation Strings paragraph. Patch by Oleg \ 
Iarygin.
bpo-26792: Improve the docstrings of runpy.run_module() and runpy.run_path(). \ 
Original patch by Andrew Brezovsky.
bpo-45790: Adjust inaccurate phrasing in Defining Extension Types: Tutorial \ 
about the ob_base field and the macros used to access its contents.
bpo-42340: Document that in some circumstances KeyboardInterrupt may cause the \ 
code to enter an inconsistent state. Provided a sample workaround to avoid it if \ 
needed.
bpo-41233: Link the errnos referenced in Doc/library/exceptions.rst to their \ 
respective section in Doc/library/errno.rst, and vice versa. Previously this was \ 
only done for EINTR and InterruptedError. Patch by Yan “yyyyyyyan” Orestes.
bpo-38056: Overhaul the Error Handlers documentation in codecs.
bpo-13553: Document tkinter.Tk args.

Tests

gh-91607: Fix test_concurrent_futures to test the correct multiprocessing start \ 
method context in several cases where the test logic mixed this up.
bpo-47205: Skip test for sched_getaffinity() and sched_setaffinity() error case \ 
on FreeBSD.
bpo-29890: Add tests for ipaddress.IPv4Interface and ipaddress.IPv6Interface \ 
construction with tuple arguments. Original patch and tests by louisom.

Build

bpo-47103: Windows PGInstrument builds now copy a required DLL into the output \ 
directory, making it easier to run the profile stage of a PGO build.

Windows

bpo-47194: Update zlib to v1.2.12 to resolve CVE-2018-25032.
bpo-46785: Fix race condition between os.stat() and unlinking a file on Windows, \ 
by using errors codes returned by FindFirstFileW() when appropriate in \ 
win32_xstat_impl.
bpo-40859: Update Windows build to use xz-5.2.5

Tools/Demos

gh-91583: Fix regression in the code generated by Argument Clinic for functions \ 
with the defining_class parameter.