Log message:
python39 py39-html-docs: updated to 3.9.9

Python 3.9.9 final

Core and Builtins
bpo-45738: Fix computation of error location for invalid continuation characters \ 
in the parser. Patch by Pablo Galindo.

Library
bpo-45235: Reverted an argparse bugfix that caused regression in the handling of \ 
default arguments for subparsers. This prevented leaf level arguments from \ 
taking precedence over root level arguments.
bpo-45765: In importlib.metadata, fix distribution discovery for an empty path.
bpo-45644: In-place JSON file formatting using python3 -m json.tool infile \ 
infile now works correctly, previously it left the file empty. Patch by Chris \ 
Wesseling.

Documentation
bpo-45772: socket.socket documentation is corrected to a class from a function.
bpo-45392: Update the docstring of the type built-in to remove a redundant line \ 
and to mention keyword arguments for the constructor.

Windows
bpo-45732: Updates bundled Tcl/Tk to 8.6.12.
bpo-45720: Internal reference to shlwapi.dll was dropped to help improve startup \ 
time. This DLL will no longer be loaded at the start of every Python process.

Log message:
python39 py39-html-docs: updated to 3.9.8

Python 3.9.8

Core and Builtins
bpo-30570: Fixed a crash in issubclass() from infinite recursion when searching \ 
pathological __bases__ tuples.
bpo-45494: Fix parser crash when reporting errors involving invalid continuation \ 
characters. Patch by Pablo Galindo.
bpo-45385: Fix reference leak from descr_check. Patch by Dong-hee Na.
bpo-45167: Fix deepcopying of types.GenericAlias objects.
bpo-44219: Release the GIL while performing isatty system calls on arbitrary \ 
file descriptors. In particular, this affects os.isatty(), os.device_encoding() \ 
and io.TextIOWrapper. By extension, io.open() in text mode is also affected. \ 
This change solves a deadlock in os.isatty(). Patch by Vincent Michel in \ 
bpo-44219.
bpo-44959: Added fallback to extension modules with ‘.sl’ suffix on HP-UX
bpo-44050: Extensions that indicate they use global state (by setting m_size to \ 
-1) can again be used in multiple interpreters. This reverts to behavior of \ 
Python 3.8.
bpo-45121: Fix issue where Protocol.__init__ raises RecursionError when it’s \ 
called directly or via super(). Patch provided by Yurii Karabas.
bpo-45083: When the interpreter renders an exception, its name now has a \ 
complete qualname. Previously only the class name was concatenated to the module \ 
name, which sometimes resulted in an incorrect full name being displayed.

(This issue impacted only the C code exception rendering, the traceback module \ 
was using qualname already).
Library
bpo-45678: Fix bug in Python 3.9 that meant functools.singledispatchmethod \ 
failed to properly wrap the attributes of the target method. Patch by Alex \ 
Waygood.
bpo-45679: Fix caching of multi-value typing.Literal. Literal[True, 2] is no \ 
longer equal to Literal[1, 2].
bpo-45438: Fix typing.Signature string representation for generic builtin types.
bpo-45581: sqlite3.connect() now correctly raises MemoryError if the underlying \ 
SQLite API signals memory error. Patch by Erlend E. Aasland.
bpo-39679: Fix bug in functools.singledispatchmethod that caused it to fail when \ 
attempting to register a classmethod() or staticmethod() using type annotations. \ 
Patch contributed by Alex Waygood.
bpo-45515: Add references to zoneinfo in the datetime documentation, mostly \ 
replacing outdated references to dateutil.tz. Change by Paul Ganssle.
bpo-45467: Fix incremental decoder and stream reader in the \ 
“raw-unicode-escape” codec. Previously they failed if the escape sequence \ 
was split.
bpo-45461: Fix incremental decoder and stream reader in the “unicode-escape” \ 
codec. Previously they failed if the escape sequence was split.
bpo-45239: Fixed email.utils.parsedate_tz() crashing with UnboundLocalError on \ 
certain invalid input instead of returning None. Patch by Ben Hoyt.
bpo-44904: Fix bug in the doctest module that caused it to fail if a docstring \ 
included an example with a classmethod property. Patch by Alex Waygood.
bpo-45406: Make inspect.getmodule() catch FileNotFoundError raised by \ 
:’func:inspect.getabsfile, and return None to indicate that the module could \ 
not be determined.
bpo-45262: Prevent use-after-free in asyncio. Make sure the cached running loop \ 
holder gets cleared on dealloc to prevent use-after-free in get_running_loop
bpo-45386: Make xmlrpc.client more robust to C runtimes where the underlying C \ 
strftime function results in a ValueError when testing for year formatting \ 
options.
bpo-45371: Fix clang rpath issue in distutils. The UnixCCompiler now uses \ 
correct clang option to add a runtime library directory (rpath) to a shared \ 
library.
bpo-20028: Improve error message of csv.Dialect when initializing. Patch by \ 
Vajrasky Kok and Dong-hee Na.
bpo-45343: Update bundled pip to 21.2.4 and setuptools to 58.1.0
bpo-41710: On Unix, if the sem_clockwait() function is available in the C \ 
library (glibc 2.30 and newer), the threading.Lock.acquire() method now uses the \ 
monotonic clock (time.CLOCK_MONOTONIC) for the timeout, rather than using the \ 
system clock (time.CLOCK_REALTIME), to not be affected by system clock changes. \ 
Patch by Victor Stinner.
bpo-45328: Fixed http.client.HTTPConnection to work properly in OSs that don’t \ 
support the TCP_NODELAY socket option.
bpo-1596321: Fix the threading._shutdown() function when the threading module \ 
was imported first from a thread different than the main thread: no longer log \ 
an error at Python exit.
bpo-45274: Fix a race condition in the Thread.join() method of the threading \ 
module. If the function is interrupted by a signal and the signal handler raises \ 
an exception, make sure that the thread remains in a consistent state to prevent \ 
a deadlock. Patch by Victor Stinner.
bpo-45238: Fix unittest.IsolatedAsyncioTestCase.debug(): it runs now \ 
asynchronous methods and callbacks.
bpo-36674: unittest.TestCase.debug() raises now a unittest.SkipTest if the class \ 
or the test method are decorated with the skipping decorator.
bpo-45235: Fix an issue where argparse would not preserve values in a provided \ 
namespace when using a subparser with defaults.
bpo-45234: Fixed a regression in copyfile(), copy(), copy2() raising \ 
FileNotFoundError when source is a directory, which should raise \ 
IsADirectoryError
bpo-45228: Fix stack buffer overflow in parsing J1939 network address.
bpo-45192: Fix the tempfile._infer_return_type function so that the dir argument \ 
of the tempfile functions accepts an object implementing the os.PathLike \ 
protocol.

Patch by Kyungmin Lee.
bpo-45160: When tracing a tkinter variable used by a ttk OptionMenu, callbacks \ 
are no longer made twice.
bpo-35474: Calling mimetypes.guess_all_extensions() with strict=False no longer \ 
affects the result of the following call with strict=True. Also, mutating the \ 
returned list no longer affects the global state.
bpo-45166: typing.get_type_hints() now works with Final wrapped in ForwardRef.
bpo-45097: Remove deprecation warnings about the loop argument in asyncio \ 
incorrectly emitted in cases when the user does not pass the loop argument.
bpo-45081: Fix issue when dataclasses that inherit from typing.Protocol \ 
subclasses have wrong __init__. Patch provided by Yurii Karabas.
bpo-24444: Fixed an error raised in argparse help display when help for an \ 
option is set to 1+ blank spaces or when choices arg is an empty container.
bpo-45021: Fix a potential deadlock at shutdown of forked children when using \ 
concurrent.futures module
bpo-45030: Fix integer overflow in pickling and copying the range iterator.
bpo-39039: tarfile.open raises ReadError when a zlib error occurs during file \ 
extraction.
bpo-44594: Fix an edge case of ExitStack and AsyncExitStack exception chaining. \ 
They will now match with block behavior when __context__ is explicitly set to \ 
None when the exception is in flight.
Documentation
bpo-45726: Improve documentation for functools.singledispatch() and \ 
functools.singledispatchmethod.
bpo-45680: Amend the docs on GenericAlias objects to clarify that non-container \ 
classes can also implement __class_getitem__. Patch contributed by Alex Waygood.
bpo-45655: Add a new “relevant PEPs” section to the top of the documentation \ 
for the typing module. Patch by Alex Waygood.
bpo-45604: Add level argument to multiprocessing.log_to_stderr function docs.
bpo-45464: Mention in the documentation of Built-in Exceptions that inheriting \ 
from multiple exception types in a single subclass is not recommended due to \ 
possible memory layout incompatibility.
bpo-45449: Add note about PEP 585 in collections.abc.
bpo-45516: Add protocol description to the importlib.abc.Traversable documentation.
bpo-20692: Add Programming FAQ entry explaining that int literal attribute \ 
access requires either a space after or parentheses around the literal.
bpo-45216: Remove extra documentation listing methods in difflib. It was \ 
rendering twice in pydoc and was outdated in some places.
Tests
bpo-45578: Add tests for dis.distb()
bpo-45577: Add subtests for all pickle protocols in test_zoneinfo.
bpo-43592: test.libregrtest now raises the soft resource limit for the maximum \ 
number of file descriptors when the default is too low for our test suite as was \ 
often the case on macOS.
bpo-40173: Fix test.support.import_helper.import_fresh_module().
bpo-45280: Add a test case for empty typing.NamedTuple.
bpo-45269: Cover case when invalid markers type is supplied to c_make_encoder.
bpo-45209: Fix UserWarning: resource_tracker warning in \ 
_test_multiprocessing._TestSharedMemory.test_shared_memory_cleaned_after_process \ 
_termination
bpo-45195: Fix test_readline.test_nonascii(): sometimes, the newline character \ 
is not written at the end, so don’t expect it in the output. Patch by Victor \ 
Stinner.
bpo-45156: Fixes infinite loop on unittest.mock.seal() of mocks created by \ 
create_autospec().
bpo-45042: Fixes that test classes decorated with \ 
@hashlib_helper.requires_hashdigest were skipped all the time.
Build
bpo-43158: setup.py now uses values from configure script to build the _uuid \ 
extension module. Configure now detects util-linux’s libuuid, too.
bpo-45571: Modules/Setup now use PY_CFLAGS_NODIST instead of PY_CFLAGS to \ 
compile shared modules.
bpo-45532: Update sys.version to use main as fallback information. Patch by \ 
Jeong YunWon.
bpo-45405: Prevent internal configure error when running configure with recent \ 
versions of non-Apple clang. Patch by David Bohman.
bpo-45220: Avoid building with the Windows 11 SDK previews automatically. This \ 
may be overridden by setting the DefaultWindowsSDKVersion environment variable \ 
before building.
Windows
bpo-45337: venv now warns when the created environment may need to be accessed \ 
at a different path, due to redirections, links or junctions. It also now \ 
correctly installs or upgrades components when the alternate path is required.
macOS
bpo-44828: Avoid tkinter file dialog failure on macOS 12 Monterey when using the \ 
Tk 8.6.11 provided by python.org macOS installers. Patch by Marc Culler of the \ 
Tk project.
IDLE
bpo-45296: On Windows, change exit/quit message to suggest Ctrl-D, which works, \ 
instead of <Ctrl-Z Return>, which does not work in IDLE.
C API
bpo-44687: BufferedReader.peek() no longer raises ValueError when the entire \ 
file has already been buffered.
bpo-44751: Remove crypt.h include from the public Python.h header.

Log message:
lang: Replace RMD160 checksums with BLAKE2s checksums

All checksums have been double-checked against existing RMD160 and
SHA512 hashes

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Log message:
lang: Remove SHA1 hashes for distfiles

Log message:
py39-html-docs: fix DESCR

Log message:
python39: updated to 3.9.6

Python 3.9.6 final

Security

bpo-44022: mod:http.client now avoids infinitely reading potential HTTP headers \ 
after a 100 Continue status response from the server.
Core and Builtins
bpo-44409: Fix error location information for tokenizer errors raised on \ 
initialization of the tokenizer. Patch by Pablo Galindo.
bpo-43667: Improve Unicode support in non-UTF locales on Oracle Solaris. This \ 
issue does not affect other Solaris systems.
bpo-44168: Fix error message in the parser involving keyword arguments with \ 
invalid expressions. Patch by Pablo Galindo
bpo-44114: Fix incorrect dictkeys_reversed and dictitems_reversed function \ 
signatures in C code, which broke webassembly builds.
bpo-44070: No longer eagerly makes import filenames absolute, except for \ 
extension modules, which was introduced in 3.9.5.
bpo-28146: Fix a confusing error message in str.format().
bpo-11105: When compiling ast.AST objects with recursive references through \ 
compile(), the interpreter doesn’t crash anymore instead it raises a \ 
RecursionError.

Library

bpo-44516: Update vendored pip to 21.1.3
bpo-44482: Fix very unlikely resource leak in glob in alternate Python \ 
implementations.
bpo-44439: Fix in bz2.BZ2File.write() / lzma.LZMAFile.write() methods, when the \ 
input data is an object that supports the buffer protocol, the file length may \ 
be wrong.
bpo-44434: _thread.start_new_thread() no longer calls PyThread_exit_thread() \ 
explicitly at the thread exit, the call was redundant. On Linux with the glibc, \ 
pthread_exit() aborts the whole process if dlopen() fails to open libgcc_s.so \ 
file (ex: EMFILE error). Patch by Victor Stinner.
bpo-44422: The threading.enumerate() function now uses a reentrant lock to \ 
prevent a hang on reentrant call. Patch by Victor Stinner.
bpo-44395: Fix as_string() to pass unixfrom properly. Patch by Dong-hee Na.
bpo-44342: [Enum] Be more robust in searching for pickle support before making \ 
an enum class unpicklable.
bpo-44356: [Enum] Allow multiple data-type mixins if they are all the same.
bpo-44254: On Mac, give turtledemo button text a color that works on both light \ 
or dark background. Programmers cannot control the latter.
bpo-44145: hmac computations were not releasing the GIL while calling the \ 
OpenSSL HMAC_Update C API (a new feature in 3.9). This unintentionally prevented \ 
parallel computation as other hashlib algorithms support.
bpo-37788: Fix a reference leak when a Thread object is never joined.
bpo-44061: Fix regression in previous release when calling \ 
pkgutil.iter_modules() with a list of pathlib.Path objects
bpo-36515: The hashlib module no longer does unaligned memory accesses when \ 
compiled for ARM platforms.
bpo-44018: random.seed() no longer mutates bytearray inputs.
bpo-38352: Add IO, BinaryIO, TextIO, Match, and Pattern to typing.__all__. Patch \ 
by Jelle Zijlstra.
bpo-43972: When http.server.SimpleHTTPRequestHandler sends a 301 (Moved \ 
Permanently) for a directory path not ending with /, add a Content-Length: 0 \ 
header. This improves the behavior for certain clients.
bpo-28528: Fix a bug in pdb where checkline() raises AttributeError if it is \ 
called after reset().
bpo-43776: When subprocess.Popen args are provided as a string or as \ 
pathlib.Path, the Popen instance repr now shows the right thing.
bpo-43666: AIX: Lib/_aix_support.get_platform() may fail in an AIX WPAR. The \ 
fileset bos.rte appears to have a builddate in both LPAR and WPAR so this \ 
fileset is queried rather than bos.mp64. To prevent a similiar situation (no \ 
builddate in ODM) a value (9988) sufficient for completing a build is provided. \ 
Patch by M Felt.
bpo-43650: Fix MemoryError in shutil.unpack_archive() which fails inside \ 
shutil._unpack_zipfile() on large files. Patch by Igor Bolshakov.
bpo-43318: Fix a bug where pdb does not always echo cleared breakpoints.
bpo-43295: datetime.datetime.strptime() now raises ValueError instead of \ 
IndexError when matching 'z' with the %z format specifier.
bpo-37022: pdb now displays exceptions from repr() with its p and pp commands.
Documentation
bpo-40620: Convert examples in tutorial controlflow.rst section 4.3 to be \ 
interpreter-demo style.
bpo-13814: In the Design FAQ, answer “Why don’t generators support the with \ 
statement?”
bpo-44392: Added a new section in the C API documentation for types used in type \ 
hinting. Documented Py_GenericAlias and Py_GenericAliasType.
bpo-38291: Mark typing.io and typing.re as deprecated since Python 3.8 in the \ 
documentation. They were never properly supported by type checkers.
bpo-44322: Document that SyntaxError args have a details tuple and that details \ 
are adjusted for errors in f-string field replacement expressions.
bpo-44195: Corrected references to TraversableResources in docs. There is no \ 
TraversableReader.
bpo-41963: Document that ConfigParser strips off comments when reading \ 
configuration files.
bpo-44072: Correct where in the numeric ABC hierarchy ** support is added, i.e., \ 
in numbers.Complex, not numbers.Integral.
bpo-43558: Add the remark to dataclasses documentation that the __init__() of \ 
any base class has to be called in __post_init__(), along with a code example.
bpo-41621: Document that collections.defaultdict parameter default_factory \ 
defaults to None and is positional-only.

Tests

bpo-44287: Fix asyncio test_popen() of test_windows_utils by using a longer \ 
timeout. Use military grade battle-tested test.support.SHORT_TIMEOUT timeout \ 
rather than a hardcoded timeout of 10 seconds: it’s 30 seconds by default, but \ 
it is made longer on slow buildbots. Patch by Victor Stinner.
bpo-44363: Account for address sanitizer in test_capi. test_capi now passes when \ 
run GCC address sanitizer.

Build

bpo-44381: The Windows build now accepts EnableControlFlowGuard set to guard to \ 
enable CFG.
Windows
bpo-41299: Fix 16ms jitter when using timeouts in threading, such as with \ 
threading.Lock.acquire() or threading.Condition.wait().

macOS

bpo-43568: Relax unnecessarily restrictive MACOSX_DEPLOYMENT_TARGET check when \ 
building extension modules for macOS. Patch by Joshua Root.
bpo-43109: Allow –with-lto configure option to work with Apple-supplied Xcode \ 
or Command Line Tools.

IDLE

bpo-40128: Mostly fix completions on macOS when not using tcl/tk 8.6.11 (as with \ 
3.9). The added update_idletask call should be harmless and possibly helpful \ 
otherwise.
bpo-33962: Move the indent space setting from the Font tab to the new Windows \ 
tab. Patch by Mark Roseman and Terry Jan Reedy.
bpo-40468: Split the settings dialog General tab into Windows and Shell/ED tabs. \ 
Move help sources, which extend the Help menu, to the Extensions tab. Make space \ 
for new options and shorten the dialog. The latter makes the dialog better fit \ 
small screens.
bpo-41611: Avoid uncaught exceptions in AutoCompleteWindow.winconfig_event().
bpo-41611: Fix IDLE sometimes freezing upon tab-completion on macOS.

Tools/Demos

bpo-44074: Make patchcheck automatically detect the correct base branch name \ 
(previously it was hardcoded to ‘master’)

C API

bpo-44441: Py_RunMain() now resets PyImport_Inittab to its initial value at \ 
exit. It must be possible to call PyImport_AppendInittab() or \ 
PyImport_ExtendInittab() at each Python initialization. Patch by Victor Stinner.
bpo-42083: Fix crash in PyStructSequence_NewType() when passed NULL in the \ 
documentation string slot.

Log message:
python39: updated to 3.9.5

Python 3.9.5 final

Security
bpo-43434: Creating a sqlite3.Connection object now also produces a \ 
sqlite3.connect auditing event. Previously this event was only produced by \ 
sqlite3.connect() calls. Patch by Erlend E. Aasland.
bpo-43882: The presence of newline or tab characters in parts of a URL could \ 
allow some forms of attacks.

Following the controlling specification for URLs defined by WHATWG \ 
urllib.parse() now removes ASCII newlines and tabs from URLs, preventing such \ 
attacks.
bpo-43472: Ensures interpreter-level audit hooks receive the \ 
cpython.PyInterpreterState_New event when called through the _xxsubinterpreters \ 
module.
bpo-36384: ipaddress module no longer accepts any leading zeros in IPv4 address \ 
strings. Leading zeros are ambiguous and interpreted as octal notation by some \ 
libraries. For example the legacy function socket.inet_aton() treats leading \ 
zeros as octal notatation. glibc implementation of modern inet_pton() does not \ 
accept any leading zeros. For a while the ipaddress module used to accept \ 
ambiguous leading zeros.
bpo-43075: Fix Regular Expression Denial of Service (ReDoS) vulnerability in \ 
urllib.request.AbstractBasicAuthHandler. The ReDoS-vulnerable regex has \ 
quadratic worst-case complexity and it allows cause a denial of service when \ 
identifying crafted invalid RFCs. This ReDoS issue is on the client side and \ 
needs remote attackers to control the HTTP server.
bpo-42800: Audit hooks are now fired for frame.f_code, traceback.tb_frame, and \ 
generator code/frame attribute access.

Core and Builtins
bpo-43105: Importlib now resolves relative paths when creating module spec \ 
objects from file locations.
bpo-42924: Fix bytearray repetition incorrectly copying data from the start of \ 
the buffer, even if the data is offset within the buffer (e.g. after reassigning \ 
a slice at the start of the bytearray to a shorter byte string).

Library
bpo-43993: Update bundled pip to 21.1.1.
bpo-43937: Fixed the turtle module working with non-default root window.
bpo-43930: Update bundled pip to 21.1 and setuptools to 56.0.0
bpo-43920: OpenSSL 3.0.0: load_verify_locations() now returns a consistent error \ 
message when cadata contains no valid certificate.
bpo-43607: urllib can now convert Windows paths with \\?\ prefixes into URL paths.
bpo-43284: platform.win32_ver derives the windows version from \ 
sys.getwindowsversion().platform_version which in turn derives the version from \ 
kernel32.dll (which can be of a different version than Windows itself). \ 
Therefore change the platform.win32_ver to determine the version using the \ 
platform module’s _syscmd_ver private function to return an accurate version.
bpo-42248: [Enum] ensure exceptions raised in _missing__ are released
bpo-43799: OpenSSL 3.0.0: define OPENSSL_API_COMPAT 1.1.1 to suppress \ 
deprecation warnings. Python requires OpenSSL 1.1.1 APIs.
bpo-43794: Add ssl.OP_IGNORE_UNEXPECTED_EOF constants (OpenSSL 3.0.0)
bpo-43789: OpenSSL 3.0.0: Don’t call the password callback function a second \ 
time when first call has signaled an error condition.
bpo-43788: The header files for ssl error codes are now OpenSSL \ 
version-specific. Exceptions will now show correct reason and library codes. The \ 
make_ssl_data.py script has been rewritten to use OpenSSL’s text file with \ 
error codes.
bpo-43655: tkinter dialog windows are now recognized as dialogs by window \ 
managers on macOS and X Window.
bpo-43534: turtle.textinput() and turtle.numinput() create now a transient \ 
window working on behalf of the canvas window.
bpo-43522: Fix problem with hostname_checks_common_name. OpenSSL does not copy \ 
hostflags from struct SSL_CTX to struct SSL.
bpo-42967: Allow bytes separator argument in urllib.parse.parse_qs and \ 
urllib.parse.parse_qsl when parsing str query strings. Previously, this raised a \ 
TypeError.
bpo-43176: Fixed processing of a dataclass that inherits from a frozen dataclass \ 
with no fields. It is now correctly detected as an error.
bpo-41735: Fix thread locks in zlib module may go wrong in rare case. Patch by \ 
Ma Lin.
bpo-36470: Fix dataclasses with InitVars and replace(). Patch by Claudiu Popa.
bpo-32745: Fix a regression in the handling of ctypes’ ctypes.c_wchar_p type: \ 
embedded null characters would cause a ValueError to be raised. Patch by Zackery \ 
Spytz.

Documentation
bpo-43959: The documentation on the PyContextVar C-API was clarified.
bpo-43938: Update dataclasses documentation to express that FrozenInstanceError \ 
is derived from AttributeError.
bpo-43755: Update documentation to reflect that unparenthesized lambda \ 
expressions can no longer be the expression part in an if clause in \ 
comprehensions and generator expressions since Python 3.9.
bpo-43739: Fixing the example code in Doc/extending/extending.rst to declare and \ 
initialize the pmodule variable to be of the right type.

Tests
bpo-43961: Fix test_logging.test_namer_rotator_inheritance() on Windows: use \ 
os.replace() rather than os.rename(). Patch by Victor Stinner.
bpo-43842: Fix a race condition in the SMTP test of test_logging. Don’t close \ 
a file descriptor (socket) from a different thread while asyncore.loop() is \ 
polling the file descriptor. Patch by Victor Stinner.
bpo-43811: Tests multiple OpenSSL versions on GitHub Actions. Use ccache to \ 
speed up testing.
bpo-43791: OpenSSL 3.0.0: Disable testing of legacy protocols TLS 1.0 and 1.1. \ 
Tests are failing with TLSV1_ALERT_INTERNAL_ERROR.

Windows
bpo-35306: Avoid raising errors from pathlib.Path.exists() when passed an \ 
invalid filename.
bpo-38822: Fixed os.stat() failing on inaccessible directories with a trailing \ 
slash, rather than falling back to the parent directory’s metadata. This \ 
implicitly affected os.path.exists() and os.path.isdir().
bpo-26227: Fixed decoding of host names in socket.gethostbyaddr() and \ 
socket.gethostbyname_ex().
bpo-40432: Updated pegen regeneration script on Windows to find and use Python \ 
3.8 or higher. Prior to this, pegen regeneration already required 3.8 or higher, \ 
but the script may have used lower versions of Python.
bpo-43745: Actually updates Windows release to OpenSSL 1.1.1k. Earlier releases \ 
were mislabelled and actually included 1.1.1i again.
bpo-43492: Upgrade Windows installer to use SQLite 3.35.5.

macOS
bpo-42119: Fix check for macOS SDK paths when building Python. Narrow search to \ 
match contents of SDKs, namely only files in /System/Library, \ 
/System/IOSSupport, and /usr other than /usr/local. Previously, anything under \ 
/System was assumed to be in an SDK which causes problems with the new file \ 
system layout in 10.15+ where user file systems may appear to be mounted under \ 
/System. Paths in /Library were also incorrectly treated as SDK locations.
bpo-44009: Provide “python3.x-intel64” executable to allow reliably forcing \ 
macOS universal2 framework builds to run under Rosetta 2 Intel-64 emulation on \ 
Apple Silicon Macs. This can be useful for testing or when universal2 wheels are \ 
not yet available.
bpo-43492: Update macOS installer to use SQLite 3.35.4.

IDLE
bpo-43655: IDLE dialog windows are now recognized as dialogs by window managers \ 
on macOS and X Window.

Log message:
python39: updated to 3.9.4

Python 3.9.4

Core and Builtins
bpo-43710: Reverted the fix for https://bugs.python.org/issue42500 as it changed \ 
the PyThreadState struct size and broke the 3.9.x ABI in the 3.9.3 release \ 
(visible on 32-bit platforms using binaries compiled using an earlier version of \ 
Python 3.9.x headers).

Library
bpo-26053: Fixed bug where the pdb interactive run command echoed the args from \ 
the shell command line, even if those have been overridden at the pdb prompt.

Log message:
python39: updated to 3.9.3

Python 3.9.3 final

Security
bpo-42988: CVE-2021-3426: Remove the getfile feature of the pydoc module which \ 
could be abused to read arbitrary files on the disk (directory traversal \ 
vulnerability). Moreover, even source code of Python modules can contain \ 
sensitive data like passwords. Vulnerability reported by David Schwörer.
bpo-43285: ftplib no longer trusts the IP address value returned from the server \ 
in response to the PASV command by default. This prevents a malicious FTP server \ 
from using the response to probe IPv4 address and port combinations on the \ 
client network.

Code that requires the former vulnerable behavior may set a \ 
trust_server_pasv_ipv4_address attribute on their ftplib.FTP instances to True \ 
to re-enable it.
bpo-43439: Add audit hooks for gc.get_objects(), gc.get_referrers() and \ 
gc.get_referents(). Patch by Pablo Galindo.

Core and Builtins
bpo-43660: Fix crash that happens when replacing sys.stderr with a callable that \ 
can remove the object while an exception is being printed. Patch by Pablo \ 
Galindo.
bpo-43555: Report the column offset for SyntaxError for invalid line \ 
continuation characters. Patch by Pablo Galindo.
bpo-43517: Fix misdetection of circular imports when using from pkg.mod import \ 
attr, which caused false positives in non-trivial multi-threaded code.
bpo-35883: Python no longer fails at startup with a fatal error if a command \ 
line argument contains an invalid Unicode character. The Py_DecodeLocale() \ 
function now escapes byte sequences which would be decoded as Unicode characters \ 
outside the [U+0000; U+10ffff] range.
bpo-43406: Fix a possible race condition where PyErr_CheckSignals tries to \ 
execute a non-Python signal handler.
bpo-42500: Improve handling of exceptions near recursion limit. Converts a \ 
number of Fatal Errors in RecursionErrors.

Library
bpo-43433: xmlrpc.client.ServerProxy no longer ignores query and fragment in the \ 
URL of the server.
bpo-35930: Raising an exception raised in a “future” instance will create \ 
reference cycles.
bpo-43577: Fix deadlock when using ssl.SSLContext debug callback with \ 
ssl.SSLContext.sni_callback().
bpo-43521: ast.unparse can now render NaNs and empty sets.
bpo-43423: subprocess.communicate() no longer raises an IndexError when there is \ 
an empty stdout or stderr IO buffer during a timeout on Windows.
bpo-27820: Fixed long-standing bug of smtplib.SMTP where doing AUTH LOGIN with \ 
initial_response_ok=False will fail.

The cause is that SMTP.auth_login _always_ returns a password if provided with a \ 
challenge string, thus non-compliant with the standard for AUTH LOGIN.

Also fixes bug with the test for smtpd.
bpo-43332: Improves the networking efficiency of http.client when using a proxy \ 
via set_tunnel(). Fewer small send calls are made during connection setup.
bpo-43399: Fix ElementTree.extend not working on iterators when using the Python \ 
implementation
bpo-43316: The python -m gzip command line application now properly fails when \ 
detecting an unsupported extension. It exits with a non-zero exit code and \ 
prints an error message to stderr.
bpo-43260: Fix TextIOWrapper can not flush internal buffer forever after very \ 
large text is written.
bpo-42782: Fail fast in shutil.move() to avoid creating destination directories \ 
on failure.
bpo-37193: Fixed memory leak in socketserver.ThreadingMixIn introduced in Python 3.7.

Documentation
bpo-43199: Answer “Why is there no goto?” in the Design and History FAQ.
bpo-43407: Clarified that a result from time.monotonic(), time.perf_counter(), \ 
time.process_time(), or time.thread_time() can be compared with the result from \ 
any following call to the same function - not just the next immediate call.
bpo-27646: Clarify that ‘yield from <expr>’ works with any iterable, \ 
not just iterators.
bpo-36346: Update some deprecated unicode APIs which are documented as “will \ 
be removed in 4.0” to “3.12”. See PEP 623 for detail.

Tests
bpo-37945: Fix test_getsetlocale_issue1813() of test_locale: skip the test if \ 
setlocale() fails. Patch by Victor Stinner.
bpo-41561: Add workaround for Ubuntu’s custom OpenSSL security level policy.
bpo-43288: Fix test_importlib to correctly skip Unicode file tests if the \ 
fileystem does not support them.

Build
bpo-43631: Update macOS, Windows, and CI to OpenSSL 1.1.1k.
bpo-43617: Improve configure.ac: Check for presence of autoconf-archive package \ 
and remove our copies of M4 macros.

macOS
bpo-41837: Update macOS installer build to use OpenSSL 1.1.1j.

IDLE
bpo-42225: Document that IDLE can fail on Unix either from misconfigured IP \ 
masquerage rules or failure displaying complex colored (non-ascii) characters.
bpo-43283: Document why printing to IDLE’s Shell is often slower than printing \ 
to a system terminal and that it can be made faster by pre-formatting a single \ 
string before printing.

Log message:
python39 py39-html-docs: updated to 3.9.2

Python 3.9.2 final
Release date: 2021-02-19

Windows
bpo-43155: PyCMethod_New() is now present in python3.lib.
Python 3.9.2 release candidate 1
Release date: 2021-02-16

Security
bpo-42967: Fix web cache poisoning vulnerability by defaulting the query args \ 
separator to &, and allowing the user to choose a custom separator.
bpo-42938: Avoid static buffers when computing the repr of ctypes.c_double and \ 
ctypes.c_longdouble values.

Core and Builtins
bpo-42819: readline: Explicitly disable bracketed paste in the interactive \ 
interpreter, even if it’s set in the inputrc, is enabled by default (eg GNU \ 
Readline 8.1), or a user calls readline.read_init_file(). The Python REPL has \ 
not implemented bracketed paste support. Also, bracketed mode writes the \ 
"\x1b[?2004h" escape sequence into stdout which causes test failures \ 
in applications that don’t support it. It can still be explicitly enabled by \ 
calling readline.parse_and_bind("set enable-bracketed-paste on"). \ 
Patch by Dustin Rodrigues.
bpo-42806: Fix the column offsets for f-strings ast nodes surrounded by \ 
parentheses and for nodes that spawn multiple lines. Patch by Pablo Galindo.
bpo-40631: Fix regression where a single parenthesized starred expression was a \ 
valid assignment target.
bpo-32381: Fix encoding name when running a .pyc file on Windows: \ 
PyRun_SimpleFileExFlags() now uses the correct encoding to decode the filename.
bpo-42536: Several built-in and standard library types now ensure that their \ 
internal result tuples are always tracked by the garbage collector:

collections.OrderedDict.items()
dict.items()
enumerate()
functools.reduce()
itertools.combinations()
itertools.combinations_with_replacement()
itertools.permutations()
itertools.product()
itertools.zip_longest()
zip()
Previously, they could have become untracked by a prior garbage collection. \ 
Patch by Brandt Bucher.
bpo-42195: The __args__ of the parameterized generics for typing.Callable and \ 
collections.abc.Callable are now consistent. The __args__ for \ 
collections.abc.Callable are now flattened while typing.Callable’s have not \ 
changed. To allow this change, types.GenericAlias can now be subclassed and \ 
collections.abc.Callable’s __class_getitem__ will now return a subclass of \ 
types.GenericAlias. Tests for typing were also updated to not subclass things \ 
like Callable[..., T] as that is not a valid base class. Finally, both types no \ 
longer validate their argtypes, in Callable[[argtypes], resulttype] to prepare \ 
for PEP 612. Patch by Ken Jin.

Library
bpo-43102: The namedtuple __new__ method had its __builtins__ set to None \ 
instead of an actual dictionary. This created problems for introspection tools.
bpo-43108: Fixed a reference leak in the curses module. Patch by Pablo Galindo
bpo-42944: Fix random.Random.sample when counts argument is not None.
bpo-42931: Add randbytes() to random.__all__.
bpo-42780: Fix os.set_inheritable() for O_PATH file descriptors on Linux.
bpo-42851: remove __init_subclass__ support for Enum members
bpo-41748: Fix HTMLParser parsing rules for element attributes containing commas \ 
with spaces. Patch by Karl Dubost.
bpo-42759: Fixed equality comparison of tkinter.Variable and tkinter.font.Font. \ 
Objects which belong to different Tcl interpreters are now always different, \ 
even if they have the same name.
bpo-42756: Configure LMTP Unix-domain socket to use socket global default \ 
timeout when a timeout is not explicitly provided.
bpo-23328: Allow / character in username, password fields on _PROXY envars.
bpo-42655: subprocess extra_groups is now correctly passed into setgroups() \ 
system call.
bpo-42727: EnumMeta.__prepare__ now accepts **kwds to properly support \ 
__init_subclass__
bpo-42681: Fixed range checks for color and pair numbers in curses.
bpo-37961: Fix crash in tracemalloc.Traceback.__repr__() (regressed in Python 3.9).
bpo-42630: tkinter functions and constructors which need a default root window \ 
raise now RuntimeError with descriptive message instead of obscure \ 
AttributeError or NameError if it is not created yet or cannot be created \ 
automatically.
bpo-42644: logging.disable will now validate the types and value of its \ 
parameter. It also now accepts strings representing the levels (as does \ 
loging.setLevel) instead of only the numerical values.
bpo-36541: Fixed lib2to3.pgen2 to be able to parse PEP-570 positional only \ 
argument syntax.
bpo-42517: Enum: private names will raise a DeprecationWarning; in 3.10 they \ 
will become normal attributes
bpo-42678: Enum: call __init_subclass__ after members have been added
bpo-42532: Remove unexpected call of __bool__ when passing a spec_arg argument \ 
to a Mock.
bpo-42388: Fix subprocess.check_output(…, input=None) behavior when text=True \ 
to be consistent with that of the documentation and universal_newlines=True.
bpo-34463: Fixed discrepancy between traceback and the interpreter in formatting \ 
of SyntaxError with lineno not set (traceback was changed to match interpreter).
bpo-42375: subprocess module update for DragonFlyBSD support.
bpo-42384: Make pdb populate sys.path[0] exactly the same as regular python \ 
execution.
bpo-42383: Fix pdb: previously pdb would fail to restart the debugging target if \ 
it was specified using a relative path and the current directory changed.
bpo-42318: Fixed support of non-BMP characters in tkinter on macOS.
bpo-42163: Restore compatibility for uname_result around deepcopy and _replace.
bpo-39825: Windows: Change sysconfig.get_config_var('EXT_SUFFIX') to the \ 
expected full platform_tag.extension format. Previously it was hard-coded to \ 
.pyd, now it is compatible with distutils.sysconfig and will result in something \ 
like .cp38-win_amd64.pyd. This brings windows into conformance with the other \ 
platforms.
bpo-42059: typing.TypedDict types created using the alternative call-style \ 
syntax now correctly respect the total keyword argument when setting their \ 
__required_keys__ and __optional_keys__ class attributes.
bpo-39101: Fixed tests using IsolatedAsyncioTestCase from hanging on BaseExceptions.
bpo-42005: Fix CLI of cProfile and profile to catch BrokenPipeError.
bpo-41907: fix format() behavior for IntFlag
bpo-41889: Enum: fix regression involving inheriting a multiply-inherited enum
bpo-41891: Ensure asyncio.wait_for waits for task completion
bpo-41604: Don’t decrement the reference count of the previous user_ptr when \ 
set_panel_userptr fails.
bpo-40219: Lowered tkinter.ttk.LabeledScale dummy widget to prevent hiding part \ 
of the content label.
bpo-40084: Fix Enum.__dir__: dir(Enum.member) now includes attributes as well as \ 
methods.
bpo-39068: Fix initialization race condition in a85encode() and b85encode() in \ 
base64. Patch by Brandon Stansbury.
bpo-33289: Correct call to tkinter.colorchooser to return RGB triplet of ints \ 
instead of floats. Patch by Cheryl Sabella.

Documentation
bpo-40304: Fix doc for type(name, bases, dict). Patch by Boris Verkhovskiy and \ 
Éric Araujo.
bpo-42811: Updated importlib.utils.resolve_name() doc to use __spec__.parent \ 
instead of __package__. (Thanks Yair Frid.)
bpo-17140: Add documentation for the multiprocessing.pool.ThreadPool class.

Tests
bpo-42794: Update test_nntplib to use offical group name of news.aioe.org for \ 
testing. Patch by Dong-hee Na.
bpo-40810: In sqlite3, fix CheckTraceCallbackContent for SQLite pre 3.7.15.

Build
bpo-43174: Windows build now uses /utf-8 compiler option.
bpo-42692: Fix __builtin_available check on older compilers. Patch by Joshua Root.
bpo-42604: Now all platforms use a value for the “EXT_SUFFIX” build variable \ 
derived from SOABI (for instance in freeBSD, “EXT_SUFFIX” is now \ 
“.cpython-310d.so” instead of “.so”). Previosuly only Linux, Mac and \ 
VxWorks were using a value for “EXT_SUFFIX” that included “SOABI”.
bpo-42598: Fix implicit function declarations in configure which could have \ 
resulted in incorrect configuration checks. Patch contributed by Joshua Root.
bpo-29076: Add fish shell support to macOS installer.

Windows
bpo-41837: Updated Windows installer to include OpenSSL 1.1.1i
bpo-42584: Upgrade Windows installer to use SQLite 3.34.0.

macOS
bpo-42504: Ensure that the value of \ 
sysconfig.get_config_var(‘MACOSX_DEPLOYMENT_TARGET’) is always a string, \ 
even in when the value is parsable as an integer.
bpo-42361: Update macOS installer build to use Tcl/Tk 8.6.11 (rc2, expected to \ 
be final release).
bpo-41837: Update macOS installer build to use OpenSSL 1.1.1i.
bpo-42584: Update macOS installer to use SQLite 3.34.0.

IDLE
bpo-43008: Make IDLE invoke sys.excepthook() in normal, 2-process mode. Patch by \ 
Ken Hilton.
bpo-33065: Fix problem debugging user classes with __repr__ method.
bpo-23544: Disable Debug=>Stack Viewer when user code is running or Debugger \ 
is active, to prevent hang or crash. Patch by Zackery Spytz.
bpo-32631: Finish zzdummy example extension module: make menu entries work; add \ 
docstrings and tests with 100% coverage.

Tools/Demos
bpo-42726: Fixed Python 3 compatibility issue with gdb/libpython.py handling of \ 
attribute dictionaries.
bpo-42613: Fix freeze.py tool to use the prope config and library directories. \ 
Patch by Victor Stinner.

C API
bpo-43030: Fixed a compiler warning in Py_UNICODE_ISSPACE() on platforms with \ 
signed wchar_t.
bpo-42591: Export the Py_FrozenMain() function: fix a Python 3.9.0 regression. \ 
Python 3.9 uses -fvisibility=hidden and the function was not exported explicitly \ 
and so not exported.
bpo-40052: Fix an alignment build warning/error in function \ 
PyVectorcall_Function(). Patch by Andreas Schneider, Antoine Pitrou and Petr \ 
Viktorin.