Log message:
python315 py315-html-docs: updated to 3.15.2

Python 3.15.2

Security

gh-160300: Fix http.cookiejar.DefaultCookiePolicy accepting and returning \ 
cookies with a negative Version attribute without checking their domain against \ 
the request host. Such cookies are now ignored.
CVE 2026-114583, gh-160097: tarfile.tar_filter() now rejects link members whose \ 
path resolves to the destination directory itself, as tarfile.data_filter() \ 
already did.
CVE 2026-115557, gh-160040: ssl now rejects TLS certificate chains that contain \ 
any of a set of compromised eMudhra intermediate CA keys. This is an \ 
extraordinary measure and a last line of defense: removing trust is primarily \ 
the job of the platform root store, and the built-in denylist only blocks \ 
connections while that update has not yet reached the OS, a container image, or \ 
a bundled trust store in various Python packages. Entries are added to the \ 
denylist only under a very high threshold. The denylist matches on the public \ 
key (the SHA-256 digest of the RFC 5280 SubjectPublicKeyInfo), so it also covers \ 
the cross-signed certificates that reuse one of the distrusted keys.

Core and Builtins

gh-160491: Fix the location reported for invalid escape sequences in f-strings \ 
and t-strings. The SyntaxError now points at the literal part that contains the \ 
escape, instead of at the closing quote.
gh-160268: Fix a crash in tokenize when a mismatched closing bracket follows the \ 
opening brace of an f-string or t-string replacement field, as in \ 
f'{]a'. It now raises the same “unmatched” error as the parser.
gh-106045: Fix venv path discovery when the base executable resolves to a \ 
location outside the installation pointed to by the home key in pyvenv.cfg. The \ 
standard library is now found from home, and extension modules from the resolved \ 
executable’s installation, instead of falling back to the compiled-in prefix.
gh-160162: Fix a crash on 32-bit platforms when left shifting an int by a count \ 
close to sys.maxsize * sys.int_info.bits_per_digit. OverflowError is now raised, \ 
as for other too large counts.
gh-160179: Fix bytearray.__init__() leaving uninitialized memory in the object \ 
when it fails on a list or tuple containing an integer not in range(256). The \ 
object is now empty after the failed call.
gh-159739: Fix a possible crash when assigning metadata to classmethod or \ 
staticmethod objects.
gh-159739: Fix a race in list.__sizeof__() when a list is concurrently resized \ 
on a free-threaded build.
gh-159739: Fix a reference leak when the value of a type alias is evaluated \ 
recursively or concurrently.
gh-159739: Fix a crash in free-threaded builds when codecs.unregister() is \ 
called concurrently.
gh-159963: Fix a regression in Python 3.15.0 where threads importing submodules \ 
of packages for the first time could raise _DeadlockError or a spurious \ 
“partially initialized module” ImportError, or block one another, with no \ 
circular import involved. importlib.import_module() now returns the partially \ 
initialized module in a cross-thread circular import, as the import statement \ 
does, instead of raising _DeadlockError.
gh-159739: Fix reference leaks when free-threaded garbage collection aborts \ 
early because of an allocation error.
gh-159739: Prevent free-threaded builds from interning and immortalizing complex \ 
subclasses in code object constants.
gh-159739: Fix a reference leak in binary, ternary, and comparison operations on \ 
weak reference proxies when another operand is a dead proxy.
gh-159739: Fix a crash when constructing an error for invalid generic alias \ 
arguments.
gh-159739: Allow the garbage collector to break reference cycles involving \ 
property accessors or names.
gh-159739: Fix a crash in warnings.warn() when skip_file_prefixes is an empty \ 
tuple subclass. Propagate allocation errors when creating the fallback filename.
gh-159431: Fix an assertion failure, or an immortal object becoming mortal, on \ 
the free threaded build when an object passed to the internal delayed decref \ 
mechanism is immortal or becomes immortal before the delayed decref is processed \ 
by the garbage collector.
gh-159294: Fix a crash in a debug build when creating an ExceptionGroup or \ 
BaseExceptionGroup fails with MemoryError. Patch by Christian Aurich Zanettini \ 
Martins.
gh-159244: Fix a crash in dict and dict.update() in the free-threaded build when \ 
another thread concurrently mutates a list used as a key/value pair. Patch by \ 
Christian Aurich Zanettini Martins.
gh-159111: Update mimalloc version from 2.1.2 to 2.5.2. Patch by Donghee Na.
gh-154318: Fix a crash when hashing a deeply nested tuple or frozendict. A \ 
RecursionError is now raised instead of overflowing the C stack.
gh-151818: Fix a double-free crash in list.append() (the specialized \ 
CALL_LIST_APPEND instruction) when growing the list fails with MemoryError.
Library
gh-160549: Fix a crash when a compression.zstd.ZstdCompressor that uses worker \ 
threads and a ZstdDict is deallocated, or the interpreter exits, while data \ 
passed to compress() is still being compressed.
gh-160535: Fix a crash in compression.zstd when the garbage collector frees a \ 
ZstdCompressor that uses worker threads together with its ZstdDict before the \ 
compression of already submitted data has finished.
gh-160520: Fix asyncio SSL transports not applying ssl_shutdown_timeout when the \ 
peer has sent EOF but does not read the data still queued for it. Closing such a \ 
connection could wait indefinitely; it is now aborted with TimeoutError once the \ 
timeout expires.
gh-160326: Raise ValueError for a NaN timeout in threading.Condition.wait() and \ 
the blocking calls built on it, such as threading.Event.wait(), \ 
threading.Semaphore.acquire() and queue.Queue.get(), instead of returning at \ 
once or looping without ever timing out.
gh-159739: Fix crashes in profiling.tracing when a custom timer reinitializes \ 
the profiler or its result clears or disables the profiler during conversion or \ 
cleanup.
gh-159739: Fix crashes in xml.parsers.expat when a character data callback \ 
disables buffering or clears another handler during a flush, or when interning \ 
an attribute name changes ordered_attributes.
gh-160299: Fix symtable.Symbol.is_referenced() for local and nonlocal symbols in \ 
function scopes when their only uses are in inlined comprehensions.
gh-159739: Fix a crash when a ctypes structure subclass cannot be created due to \ 
an allocation failure.
gh-159739: Fix clearing a pickle.Unpickler memo so that the unpickler can be \ 
reused for independent records.
gh-160171: On the server side, ssl.SSLSocket.get_unverified_chain() now returns \ 
the client’s certificate when the session was resumed from a session ticket, \ 
instead of an empty list, and returns an empty list instead of raising \ 
AttributeError when the client sent no certificate.
gh-159739: Fix a possible crash in abc.ABCMeta instance checks when a \ 
subclass-checking callback changes the instance’s class.
gh-159739: Fix the truncate method on io.BytesIO when converting its size \ 
argument closes the stream or exports its buffer.
gh-159739: Fix contextvars.ContextVar returning a stale value after a reentrant \ 
finalizer changes it during reset().
gh-159739: Detect recursive _as_parameter_ chains for ctypes calls without \ 
argument types.
gh-159739: Fix a possible crash when a list of sqlite3 parameters is modified \ 
concurrently on a free-threaded build.
gh-159739: Avoid a crash when a threading.local subclass finalizer accesses \ 
attributes after construction fails.
gh-159739: Avoid a crash when a queue.SimpleQueue subclass finalizer adds an \ 
item after construction fails.
gh-100609: str() of a zipfile.Path whose underlying zipfile has no filename, \ 
such as one constructed from an io.BytesIO, now renders that filename as \ 
:zipfile: instead of raising TypeError. The root of a zipfile is also no longer \ 
rendered with a trailing slash. Synchronized with zipp 3.23.1.
gh-159690: Fix logging.handlers.TimedRotatingFileHandler permanently stopping \ 
rollover after a rollover failed or its backup file already existed, for example \ 
at a DST change.
gh-159739: Avoid undefined behavior when struct.pack_into() copies a bytearray \ 
into overlapping output.
gh-159739: Fix allocation error handling in the fallback implementation of \ 
getaddrinfo().
gh-159739: Fix a double free if remote unwinder initialization runs out of memory.
gh-159739: Fix io.IOBase.readline() returning more bytes than requested when a \ 
stream supports peek() and returns short reads.
gh-159739: Fix multibyte encoders silently consuming a non-BMP character when \ 
looking up a two-character mapping.
gh-159739: Fix off-by-one output buffer checks in the fallback implementation of \ 
getnameinfo().
gh-159739: Fix reference cycles involving the types of grapheme iterators and \ 
segments created by unicodedata.iter_graphemes().
gh-159706: Fix the pure-Python zoneinfo.ZoneInfo setting fold=0 in fromutc() for \ 
times in the fold created by the only transition of a zone with a single \ 
transition.
gh-159714: Fix zoneinfo.ZoneInfo interpreting the Julian day rule J59 as \ 
February 29 in leap years instead of February 28.
gh-159304: Fix AttributeError in email.message.EmailMessage.get_body() when a \ 
nested multipart part is malformed and its payload is a string.
gh-158287: Fix a bug in asyncio where stopping a child process (such as with \ 
SIGSTOP) on macOS caused the event loop to block indefinitely.
gh-130698: Fix PyREPL to convert sys.ps1 and sys.ps2 to strings before use, and \ 
fall back to the default prompts if the conversion raises.
gh-158126: Speed up pickle.dumps() and creating a pickle.Pickler by avoiding the \ 
creation of an AttributeError when looking up the optional reducer_override and \ 
dispatch_table attributes.
gh-157880: Fix mailbox.Babyl to write the visible headers of a \ 
mailbox.BabylMessage to the mailbox file.
gh-156784: asyncio.ProactorEventLoop no longer silently ignores \ 
ConnectionResetError on UDP sockets, matching asyncio.SelectorEventLoop.
gh-156078: zipfile.ZipFile.mkdir() now raises ValueError when the archive is \ 
closed or when a writable member handle is open.
gh-155833: Ensure that MD5 and SHA* objects are properly GC-untracked before \ 
freeing their internal HACL* state. Patch by Bénédikt Tran.
gh-155428: Ensure that hmac.digest() and hmac.HMAC.digest() output identical \ 
values when using a digest’s block size smaller than 16. Patch by Bénédikt \ 
Tran.
gh-155152: Improve performance of some zipimport archives that use Zstandard \ 
compression.
gh-153679: zipimport.zipimporter now raises zipimport.ZipImportError instead of \ 
UnicodeDecodeError for a UTF-8-flagged file name that is not valid UTF-8. Patch \ 
by tonghuaroot.
gh-153319: The turtledemo viewer now reads each demo script as UTF-8 instead of \ 
the locale encoding.
gh-127636: Fix tarfile.TarFile.extract() to accept archive member names with a \ 
trailing forward slash, including those returned by tarfile.TarFile.getnames(). \ 
Contributed by Xiao Yuan.
gh-149527: multiprocessing: fix creation of temporary socket files following \ 
gh-1373358.
gh-146169: xml.parsers.expat: raise RuntimeError when an Expat handler calls \ 
parser.Parse or parser.ParseFile on the parser that called the handler. Patch by \ 
Bénédikt Tran.
gh-140036: Avoid hanging in floor division of pure Python decimal.Decimal \ 
instances when the context precision is very large. Patch by Bénédikt Tran.

Build

gh-128883: Fix crashes with -X perf and -X perf_jit in BOLT builds. The ELF perf \ 
trampoline templates now use read-only data sections.
gh-160004: Fix the paths in the PEP 739 build-details.json file generated by \ 
Tools/build/generate-build-details.py with both --relative-paths and \ 
--config-file-path. Previously, every path except base_prefix was wrong and \ 
depended on the directory the script was run from.
gh-159998: Fix libpython.dynamic in the PEP 739 build-details.json file for \ 
macOS and iOS framework builds. It now points at the framework’s library \ 
instead of a nonexistent path under lib/.
gh-144942: Fix the macOS shared library and framework builds not linking the \ 
libraries required by built-in modules, such as the HACL* objects needed by \ 
_blake2 when it is built in via Modules/Setup.local.
gh-159819: Fix the shell version of python3-config (used on all POSIX platforms \ 
except macOS) when the installation prefix contains spaces or other characters \ 
special to the shell or sed: it printed an empty --prefix and wrong \ 
--includes/--ldflags paths while exiting successfully. The script now also exits \ 
with status 1 if it cannot determine its installation prefix.
gh-157354: Fix the --with-name-sanitizer=no and --without-name-sanitizer \ 
configure options enabling the sanitizer instead of disabling it.
gh-155813: On macOS, LIBFFI_CFLAGS and LIBFFI_LIBS are no longer ignored when \ 
the SDK provides libffi, so ctypes can again be built against a different \ 
libffi. Patch by Advit Arora.

C API

gh-159739: Avoid a crash if a context watcher is cleared while other context \ 
watchers are being notified.

Log message:
python315 py315-html-docs: updated to 3.15.1

Python 3.15.1

Security
gh-159894: Bump the version of pip bundled in ensurepip to version 26.2.2.
gh-159428: mimetypes no longer reads the files listed in mimetypes.knownfiles by \ 
default on Windows, and uses only the registry.
gh-157953: Update bundled libexpat to version 2.9.0.
Core and Builtins
gh-159739: Avoid a crash if allocation fails while creating a \ 
string.templatelib.Template iterator.
gh-159739: Propagate errors during generic class construction and avoid a crash \ 
after failed generic alias substitution.
gh-159739: Raise OverflowError when the absolute value of a dynamic printf-style \ 
formatting width is too large.
gh-159739: Fix a reference leak in gc.get_objects() and gc.get_referrers() when \ 
an internal allocation fails in the free-threaded build.
gh-159739: Fix memory leaks during interpreter startup when a path configuration \ 
file is empty or too large, or when an audit hook rejects a command.
gh-159739: Avoid a crash when an interpreter configuration string cannot be \ 
encoded as UTF-8.
gh-159739: Preserve the original SyntaxError if allocating optional error \ 
metadata fails.
gh-159739: Avoid a crash if formatting an integer with the c presentation type \ 
runs out of memory.
gh-159739: Avoid a crash when a module filename cannot be encoded as UTF-8.
gh-159603: On FreeBSD, call pthread_attr_get_np() to get the stack size (and \ 
guard size) of the current thread. Patch by Victor Stinner.
gh-130279: Fix bug where compiler did not set the right exception handler for \ 
some jump instructions.
gh-159430: Report the correct exception if looking up __bytes__() raises an \ 
exception while performing %-formatting of bytes.
gh-159320: Add dynamic detection of stack sizes on Android, allowing safer deep \ 
recursion.
gh-159288: Fix a crash when walking a very long chain of lazy import \ 
placeholders, as created by an aliased dotted import such as lazy import a.b.c \ 
as d. RecursionError is now raised instead.
gh-159285: Fix a crash in a debug build when copying an empty dict fails with \ 
MemoryError. Patch by Christian Aurich Zanettini Martins.
gh-159041: Fix a use-after-free in asyncio task bookkeeping when a finalizer \ 
creates a task during thread shutdown.
gh-158973: Reset the warnings lock in the child after os.fork(), before clearing \ 
other threads’ states, to avoid deadlocks when their finalizers issue \ 
warnings. Preserve the lock’s recursion depth if the forking thread owns it.
gh-158918: Reduce C stack usage of _PyModule_IsPossiblyShadowing, which could \ 
potentially cause stack overflows during module attribute access while deeply \ 
recursing in agressively optimized builds.
gh-158803: Fix a crash in bytes.join() and bytearray.join() in the free-threaded \ 
build when another thread concurrently mutates the list being joined. Patch by \ 
Christian Aurich Zanettini Martins.
gh-158824: Fix module-level __getattr__() being called before a module’s own \ 
lazy imports were resolved, which allowed it to shadow them.
gh-158820: Fix a crash when a lazy import is declared or resolved by a finalizer \ 
running during interpreter shutdown.
gh-158592: Skip the array reallocation when shrinking a small list. Patch by \ 
Donghee Na.
gh-158583: bytes.fromhex() and bytearray.fromhex(): Fix uninitialized memory \ 
read. Patch by Victor Stinner.
gh-158197: Fix crashes and debug-build assertion failures in the free-threaded \ 
build when iterating over a split dictionary while another thread deletes \ 
entries or clears it. Publish insertion-order updates atomically so readers \ 
cannot observe an increased size before the corresponding order entry is \ 
initialized.
gh-158592: del list[index] now triggers shrinking the list’s internal array.
gh-158486: Fix the PowerSort mask calculation in list.sort() for very large lists.
gh-158121: Fix missing sys.monitoring INSTRUCTION events when a LINE callback \ 
returns sys.monitoring.DISABLE.
gh-158219: Fix bytearray constructor: do not use a bytes object if its hash \ 
value is already computed. Patch by Cody Maloney and Victor Stinner.
gh-158072: Fix a JIT crash when a class is instantiated with their default arguments
gh-157468: Fix the JIT optimizer folding a builtin name to a constant taken from \ 
the interpreter’s builtins dictionary even when the running function uses a \ 
different __builtins__ mapping, such as one created with vars(builtins).copy(). \ 
The optimizer now only folds when the function’s builtins is the \ 
interpreter’s, and the folded constant is guarded at runtime so that another \ 
function sharing the same code object but a different builtins mapping does not \ 
use it.
gh-157242: If bytearray.resize() or bytearray.take_bytes() fails, leave the \ 
bytearray unchanged, instead of clearing it. Patch by Victor Stinner.
gh-156091: Fix a crash when compiling deeply nested inlined list, set, or dict \ 
comprehensions. A SyntaxError is now raised when the nesting exceeds the \ 
compiler’s static block limit.
gh-106045: Fix standard library discovery in virtual environments created from a \ 
Python executable symlink located outside its base installation.
gh-156459: Fix cleanup on error in compiler_set_qualname. Previously it was \ 
called in _PyCompile_EnterScope, after the scope had been entered, and this was \ 
not reversed in case of an error.
gh-156371: Fix missing PyRefTracer_DESTROY events for trashcan deferred objects. \ 
Patch by Donghee Na.
gh-156204: Fix a crash in PyErr_GivenExceptionMatches() when evaluating deeply \ 
nested exception tuples. The recursion is now bounded, and exceeding the limit \ 
is reported as an unraisable exception.
gh-155823: Fix a JIT bug where the side exit taken when a virtual iterator is \ 
exhausted left a stale value on the stack, so the tier one interpreter resumed \ 
with corrupted state and yield from raised AttributeError instead of finishing \ 
normally.
gh-155504: Fix a crash when thread state creation fails before the thread state \ 
is fully initialized.
gh-155315: Fix marshal so that a frozendict referenced more than once in the \ 
serialized data round-trips correctly, instead of failing to load with \ 
ValueError. Patch by tonghuaroot.
gh-154937: Fix a data race on thread handle identifiers when _thread._shutdown() \ 
runs concurrently with the startup of non-daemon threads in the free-threaded \ 
build.
gh-152075: Reduced lock contention during LOAD_GLOBAL bytecode specialization \ 
under free threading.
gh-153578: Fix an out-of-bounds write in bytearray.extend() when the bytearray \ 
is resized while the argument’s __buffer__() is being acquired, for example by \ 
another thread. Patch by tonghuaroot.
gh-151895: Fixed a crash in marshal.loads() when an allocation failed while \ 
loading a reference-tracked dictionary; it now raises MemoryError.
gh-151518: Fix a free-threaded stop-the-world fairness issue that could starve a \ 
thread reattaching after being suspended while detached.
gh-149816: Fix a Use-After-Free race condition in subtype_getweakref() during \ 
concurrent weakref creation and destruction in the free-threading build.
gh-149816: Fix race conditions in invoke_gc_callback iterating gc.callbacks in \ 
free-threading mode.
gh-69605: Fix REPL completions inserted incorrectly when there was spaces in \ 
import statements.
Library
gh-138641: Ignore pdb.set_trace() when called directly at the pdb prompt.
gh-159864: Fix a crash in syslog.openlog() under the free-threaded build when \ 
sys.argv is modified concurrently.
gh-159811: Fix a crash in hashlib when the OpenSSL routine used by hash.update() \ 
or by hash object constructors fails on data larger than 2048 bytes. Patch by \ 
Bénédikt Tran.
gh-159811: Fix a crash in hmac when the OpenSSL routine used by \ 
hmac.HMAC.update() or by hmac.new() fails on data larger than 2048 bytes. Patch \ 
by Bénédikt Tran.
gh-159786: Fix the error handling of the HACL* routine used by hmac.new() and \ 
hmac.HMAC.update(). If the maximum input length of the underlying hash function \ 
is exceeded, an OverflowError is now raised on all builds, instead of crashing \ 
on DEBUG builds and being silently ignored otherwise. Code correctness. \ 
Realistically this can only happen at implausible sizes. Patch by Bénédikt \ 
Tran.
gh-159739: Fix copying collections.deque subclasses with a large maximum length.
gh-159739: Allow cyclic garbage collection to reclaim group records returned by grp.
gh-159739: Fix io.BytesIO reads into overlapping views of the same buffer.
gh-159739: Avoid a crash when memory allocation fails while creating a \ 
collections.OrderedDict items iterator.
gh-159739: Avoid reading past the end of an encoding name when the surrogatepass \ 
error handler receives a truncated UTF-16 or UTF-32 name.
gh-159739: Fix incorrect ctypes scalar values after ctypes.resize() enlarges the \ 
object.
gh-159739: Fix a memory leak when Unicode normalization cannot grow its \ 
temporary buffer.
gh-159739: Fix resource leaks in ssl when certificate conversion or key log \ 
setup fails.
gh-149015: Fix bdb.Bdb.clear_all_file_breaks() leaving breakpoints behind when \ 
multiple breakpoints are set on the same line.
gh-159620: Fix python -m asyncio ps, pstree and async-aware profiling.sampling \ 
stacks stopping at asynchronous generators. Patch by Timofei Ivankov.
gh-159458: Fix a ThreadSanitizer data race on the static cache in \ 
normalize_century() of the datetime module under the free-threaded build.
gh-159430: Report the correct exception if looking up __name__ raises an \ 
exception when calling repr() on a weakref.ref.
gh-159225: Prevent input calls in PyREPL from modifying readline history.
gh-159044: Restore the previous behaviour of \ 
http.client.HTTPConnection.set_tunnel() where header values that are not strings \ 
(such as None, int or other objects) are converted with str instead of raising \ 
AttributeError when the request is sent.
gh-159184: Fix marshal.dumps() raising MemoryError for a set or frozenset \ 
containing several complex NaNs, which also made it impossible to write a .pyc \ 
file for source code containing such a constant.
gh-159185: Fix a crash in marshal.dumps() and marshal.dump() when a set is \ 
modified while its elements are serialized, for example by the __buffer__() \ 
method of one of its elements. RuntimeError is now raised.
gh-159049: Fix reference cycles in asyncio.loop.create_connection() and \ 
asyncio.loop.start_tls() after a failed TLS handshake. Patch by Timofei Ivankov.
gh-87720: Fixed error in email new policies where header folding failed to \ 
detect the need to re-quote text obtained from encoded words in certain cases.
gh-158929: Fix crash when calling syslog.syslog() while a subinterpreter in \ 
another thread calls syslog.openlog() or syslog.closelog().
gh-158936: dataclass() no longer fails when a string annotation names a lazy \ 
import that cannot be resolved, matching the behavior for non-string \ 
annotations.
gh-158893: Make os.strerror() thread-safe: use the reentrant strerror_r() \ 
function if available. Patch by Victor Stinner.
gh-158539: Fix macOS runtime section lookup for remote debugging when virtual \ 
memory region sizes differ from Mach-O segment file sizes.
gh-156545: Fix deep flamegraph exports on platforms with small C stacks by \ 
falling back to the Python JSON encoder when the C encoder runs out of stack \ 
space.
gh-158552: Wait for Windows threads to finish suspending before reading target \ 
memory in the sampling profiler’s blocking mode. Resume the target if waiting \ 
for suspension fails.
gh-156321: Fix asyncio.shield() reporting an exception from the inner future \ 
through the loop exception handler as soon as it completes after the shield was \ 
cancelled, even when the exception is retrieved afterwards. The exception is now \ 
reported only if it is never retrieved, as with any other future.
gh-158539: Fix profiling.sampling exception mode discarding samples for code \ 
running inside an except block in a generator or coroutine. The remote debugger \ 
now follows tstate->exc_info and its previous_item chain instead of only \ 
reading the embedded exc_state, matching the exception that sys.exception() \ 
reports.
gh-158563: Fix turtle.undo() after turtle.teleport() and after an exception in \ 
turtle.circle(), turtle.dot() or turtle.write(). Fix turtle.stamp(), \ 
turtle.clearstamp(), turtle.clear() and turtle.reset() when the undo buffer is \ 
disabled.
gh-158540: Fix profiling.sampling not adding the directory containing the \ 
profiled script to sys.path, which prevented the script from importing modules \ 
placed next to it. The script’s directory is now added, matching the behavior \ 
of python script.py.
gh-158522: Fix profiling.sampling showing a single frame for a task whose \ 
coroutine recurses. Patch by Timofei Ivankov.
gh-158169: Fix zlib.Decompress.unconsumed_tail duplicating unused_data after end \ 
of stream when max_length was used.
gh-158004: Fix asyncio.as_completed() to continue yielding every awaitable after \ 
a pending iteration step is cancelled.
gh-153888: Fix unittest.mock.patch() with autospec, spec, or spec_set when used \ 
with lazy-imported objects.
gh-157672: Fix tkinter on macOS: creating a Tk instance no longer replaces the \ 
Python handlers of SIGINT, SIGHUP and SIGTERM with Tk’s handler which exits \ 
the process, so Ctrl-C raises KeyboardInterrupt again.
gh-157621: Fix a crash when a weak-reference callback is attached to a \ 
typing.ParamSpecArgs or typing.ParamSpecKwargs instance.
gh-69919: code.InteractiveInterpreter.runsource() and the REPL now report any \ 
exception raised by compiling the source, such as MemoryError or RecursionError \ 
for too deeply nested source, instead of propagating it or printing a traceback \ 
of the REPL internals.
gh-157451: Fix gettext plural form selection when the Plural-Forms expression \ 
combines the unary ! operator with a binary operator, for example !n + 1 or 2 * \ 
!n. The latter raised SyntaxError.
gh-157406: Fix the Python implementation of xml.etree.ElementTree.XMLParser: the \ 
doctype() method of the target is now called for a document type declaration \ 
without an external identifier, like <!DOCTYPE html>, as in the C \ 
implementation.
gh-157364: Fix a use-after-free in io.TextIOWrapper when a call to the \ 
underlying buffer reentrantly detaches it. Patched by Shamil Abdulaev.
gh-157242: io.BytesIO is no longer closed on write() and truncate() failure \ 
(MemoryError). Patch by Victor Stinner.
gh-157325: Fix an out-of-bounds read in the hz incremental decoder when the \ 
input ends with ~.
gh-123018: Fix readline.write_history_file() and readline.append_history_file() \ 
producing a history file that readline.read_history_file() could not load when a \ 
limit was set with readline.set_history_length() and Python was built against \ 
libedit. This works around NetBSD PR 60322.
gh-157146: linecache can now read the source of a module that was imported from \ 
a zip archive on sys.path when given only the file name, as pdb, warnings and \ 
doctest do.
gh-157048: Preserve the position and contents of io.BytesIO when \ 
BytesIO.__init__() fails because a buffer is exported.
gh-156961: Fix tkinter.font.nametofont() and the tkinter.font.Font constructor \ 
for a font name returned by Tk as a Tcl object, for example by \ 
ttk.Style.lookup().
gh-156946: Fix a crash in curses.panel when the finalizer of a panel’s user \ 
pointer runs while the panel is being deallocated. The panel is now taken off \ 
the panel stack before its user pointer is dropped.
gh-156920: Fix asyncio on Windows: closing a DatagramTransport under \ 
ProactorEventLoop while datagrams were still queued, or while an in-flight write \ 
failed right as close() was draining the buffer, could strand the queued data \ 
and never call connection_lost(), hanging the close indefinitely.
gh-156810: Fix a UnicodeEncodeError crash in the sampling profiler’s \ 
collapsed-stack export (--collapsed) when a sampled frame’s function or file \ 
name contains non-ASCII or surrogate-escaped characters. The output file is now \ 
written as UTF-8.
gh-156797: Fix xml.sax.saxutils.XMLGenerator: the namespace URI is now escaped \ 
in the namespace declaration. Previously a URI containing &, < or a quote \ 
character produced a document which cannot be parsed.
gh-83895: xml.etree.ElementTree now accepts input larger than 2 GiB in the C \ 
implementation. The data is fed to Expat in chunks, as xml.parsers.expat already \ 
did, instead of raising OverflowError.
gh-99064: Fix xml.etree.ElementTree.parse() with a text file or other source of \ 
str data in the C implementation. The encoding declared in the document was \ 
applied to the already decoded text, which produced mojibake. It is now ignored, \ 
as when parsing with XMLParser.feed() or fromstring().
gh-156713: Fix nturl2path.pathname2url() and nturl2path.url2pathname(): the \ 
filesystem encoding and error handler are now used for percent-encoding and \ 
decoding, as in urllib.request. Previously paths containing surrogate characters \ 
raised UnicodeEncodeError.
gh-156698: Fix asyncio.ProactorEventLoop UDP transports so that a write error no \ 
longer strands a paused protocol: the write loop is now rescheduled when data \ 
remains buffered, and the protocol is resumed when the buffer has drained.
gh-156658: xml.dom and xml.etree.ElementTree no longer treat characters which \ 
are not white space in XML (such as U+00A0) as white space. Previously they \ 
could be lost in indent(), canonicalize() with strip_text=True, and when parsing \ 
with the whitespace-in-element-content feature turned off.
gh-156568: zipapp.create_archive() now correctly sets the executable bit on the \ 
target archive when copying a zipapp where the target is a path-like object.
gh-156545: Fix the sampling profiler’s flamegraph export so that profiling a \ 
deeply recursive program no longer fails with RecursionError instead of \ 
producing a flamegraph. Patch by tonghuaroot.
gh-156476: The pure Python implementation of queue.SimpleQueue.get() now ignores \ 
timeout when block is false, matching the documented behavior and the C \ 
implementation. It previously raised ValueError.
gh-156444: Fix matching of a negated character set in a bytes pattern compiled \ 
with both re.IGNORECASE and re.LOCALE. The case closure is now applied to the \ 
members of the set, so that [^bc] no longer matches b'B'.
gh-156180: zlib.adler32_combine() and zlib.crc32_combine() now raise ValueError \ 
if the len2 argument is negative, instead of returning rubbish or hanging \ 
indefinitely, respectively.
gh-156166: ssl: A failed assignment or deletion of the _msg_callback attribute \ 
of ssl.SSLContext no longer removes the current callback. Deleting it now raises \ 
AttributeError instead of TypeError.
gh-156173: Calling zlib.Decompress.flush() on invalid compressed data now raises \ 
zlib.error instead of being silently ignored.
gh-152817: sqlite3: Disallow removing the row_factory attribute of a cursor to \ 
prevent a crash on a query.
gh-156124: Fix a crash in the free-threaded build when deleting the contents \ 
attribute of a ctypes pointer.
gh-156101: Fix sqlite3.Cursor.arraysize being set to 0 if the assigned value is \ 
too large. The attribute is now left unchanged if the assignment fails.
gh-156100: Fix crashes in sqlite3.Connection when deleting the autocommit \ 
attribute or setting it to an integer which does not fit in C long. Both now \ 
raise an exception.
gh-156099: Fix a crash when deleting the keylog_filename attribute of \ 
ssl.SSLContext. It now raises AttributeError.
gh-156067: Fix error handling in the zoneinfo accelerator module when a \ 
transition index is -1 or a TZ string’s __bool__ raises.
gh-155997: Fix concurrent.interpreters.list_all(). It failed if an interpreter \ 
was destroyed during the call, in particular by a garbage collection which \ 
finalized the object owning the last reference to it.
gh-155941: Fix asyncio.start_server() when a plain-function client_connected_cb \ 
raises: the error is now reported like the coroutine case and the transport is \ 
closed, instead of leaving the connection open forever (which also made \ 
asyncio.Server.wait_closed() hang).
gh-155843: hmac: ensure that HMAC objects are properly initialized to prevent \ 
rare crashes on allocation failures. Patch by Bénédikt Tran.
gh-155835: hashlib: Fix data races when accessing digest_size and block_size on \ 
SHA-3 objects. Patch by Bénédikt Tran.
gh-155830: _blake2: Ensure that BLAKE-2 objects are correctly initialized before \ 
being tracked by the garbage collector. Patch by Bénédikt Tran.
gh-155782: ssl: prevent a crash in group() for session-less objects on OpenSSL \ 
3.2 and later. Patch by Bénédikt Tran.
gh-155811: Add a sequence counter to GC statistics to prevent _remote_debugging \ 
returning inconsistent snapshots caused by non-atomic reads. Patch by Maurycy \ 
Pawłowski-Wieroński.
gh-155717: multiprocessing’s default start method is now “spawn” instead \ 
of "forkserver" when there is no writable temporary directory, such as \ 
on a read-only file system. Previously starting a process failed with an OSError \ 
there. Patch by Bénédikt Tran.
gh-155775: Fix a regression in imaplib introduced in the fix for gh-63121: \ 
refreshing the capabilities after a successful login() or authenticate() \ 
consumed the CAPABILITY response, so it could no longer be read with response().
gh-113318: Fix crashes when deleting an attribute whose setter is generated by \ 
Argument Clinic and is not prepared for deletion, among them \ 
frame.f_trace_opcodes and the context, owner and session attributes of \ 
_ssl._SSLSocket. Deleting such attribute now raises AttributeError.
gh-150449: Fix sqlite3.Blob slices with a negative step. Reading or writing such \ 
a slice raised SystemError. It now raises ValueError.
gh-155336: Fix error handling in socket.gethostbyaddr() and \ 
socket.gethostbyname_ex() when hostname resolution fails.
gh-155426: Make sure that the pure Python fallback of hmac.digest() rejects keys \ 
that are neither bytes or bytearray. Previously, an AttributeError was raised \ 
instead of TypeError. Patch by Bénédikt Tran.
gh-102475: Fix os.path.realpath() on Windows: the unresolved part of the path is \ 
now appended, not joined, so a file name which looks like a drive (e.g. \ 
spam:eggs) no longer discards the resolved part. A path relative to another \ 
drive is now resolved against the root directory of that drive.
gh-89760: Fix os.path.realpath() on Windows: the \\?\ prefix is no longer \ 
stripped from a volume GUID path, which made the result invalid.
gh-84419: Fix os.stat() on Windows: trailing dots and spaces, which are ignored \ 
by the operating system, are no longer taken into account when the execute \ 
permissions are guessed from the file extension.
gh-155319: warnings.warn_explicit() now displays the source line taken from the \ 
loader of the module whose globals are passed as module_globals. It also no \ 
longer raises IndexError if lineno is out of the range of the module source.
gh-123011: warnings.warn_explicit() no longer emits a spurious \ 
DeprecationWarning or raises ImportError when it is called with the globals of \ 
the __main__ module.
gh-69370: python -m inspect --details no longer fails with UnicodeEncodeError if \ 
the path of the module contains characters unencodable in the encoding of \ 
sys.stdout. Such characters are now escaped with backslashes.
gh-69371: Fix pydoc for modules whose path contains undecodable bytes. \ 
pydoc.writedoc() and the pydoc HTTP server no longer fail with \ 
UnicodeEncodeError: the file URL is now percent-encoded using the filesystem \ 
encoding, and characters unencodable in the generated HTML page are escaped with \ 
backslashes.
gh-154855: Fix curses.window.instr() returning one character too few when the \ 
curses module is built against a curses library that counts the terminator in \ 
the requested length, such as the NetBSD one.
gh-154594: Fix copy.deepcopy() so that an object whose deep copy is None is \ 
still memoized. Patch by tonghuaroot.
gh-154523: Fixed data-race when calling io.TextIOBase.detach() in free-threaded \ 
build.
gh-135683: logging.FileHandler and logging.handlers.WatchedFileHandler now honor \ 
logging.raiseExceptions for errors that occur while opening the file, like for \ 
other errors during logging.
gh-82535: logging.handlers.SysLogHandler no longer fails if the address cannot \ 
be resolved when the handler is created. The address is resolved again when a \ 
record is emitted.
gh-153970: Calling str() on a subprocess.CalledProcessError no longer raises \ 
TypeError when its returncode is not an integer, such as None.
gh-154194: Fix the sampling profiler dropping entire samples when a non-fatal \ 
read fails; frames now keep any readable metadata, and long funcnames and \ 
filenames are truncated instead. Patch by Maurycy Pawłowski-Wieroński.
gh-153005: concurrent.interpreters.Queue.get() and \ 
concurrent.interpreters.Queue.put() now compute their timeout deadline from \ 
time.monotonic() instead of the wall clock, so adjusting the system clock during \ 
the call no longer makes them over- or under-wait.
gh-154062: Stop normalizing differential flamegraph baselines to the duration of \ 
the current profile.
gh-81241: Fix OSError when importing ctypes from a statically linked interpreter.
gh-153838: Skip non-regular files in the profiling.sampling heatmap exporter \ 
instead of reading them unconditionally. Patch by tonghuaroot.
gh-141276: Fix duplicate SyntaxWarning messages when importing source modules \ 
from ZIP archives. zipimport.zipimporter.get_filename(), and therefore \ 
find_spec(), no longer compile source modules. A SyntaxError in a zipped source \ 
module is now raised when the module is executed rather than when it is found, \ 
matching the behavior of filesystem-based loaders.
gh-153603: Fix a crash in the ISO-2022 decoders when decoding a byte after an \ 
unknown charset designation is set via the decoder’s setstate method. Patch by \ 
tonghuaroot.
gh-153539: Fix a crash in the C implementation of io.TextIOWrapper.tell() when \ 
the decoder’s getstate method triggers a reentrant seek, or when another \ 
thread seeks the same stream concurrently. Patch by tonghuaroot.
gh-152754: Fix a crash when the same os.scandir() iterator is used concurrently \ 
from multiple threads. It no longer releases the directory handle while another \ 
thread is reading from it. Sharing an iterator between threads remains subject \ 
to race conditions: which entries each thread receives is unspecified.
gh-153364: Make frame, coroutine and task-waiter walks iterative and bounded, \ 
avoiding potential hangs and stack overflows. Fix asyncio task inspection when \ 
awaited-by sets contain removed entries. Patch by Maurycy Pawłowski-Wieroński.
gh-149816: hashlib: fix a crash arising from a race condition when looking up an \ 
OpenSSL hash algorithm by name the first time. Patch by Bénédikt Tran.
gh-151292: Fix profiling.sampling --binary leaving unreadable profile files when \ 
the binary format reaches a size limit. Preserve collected samples when the \ 
writer can still finalize safely. Patch by Maurycy Pawłowski-Wieroński.
gh-152721: Fix quadratic replay time in the profiling.sampling binary reader \ 
when a profile’s run-length-encoded samples alternate thread status.
gh-151126: Fix a crash caused by failing to set MemoryError on allocation \ 
failure when passing ctypes.Structure or ctypes.Union instances by value to \ 
ctypes foreign functions.
gh-152692: Fix annotationlib.type_repr() returning a string such as \ 
None.list.append for bound built-in methods, whose __module__ is None. It now \ 
returns the qualified name, as it already did for other builtins.
gh-152490: Fix TypeError when formatting a SyntaxError raised with \ 
NotImplemented as its argument, which caused unexpected REPL exit and IDLE Shell \ 
restart.
gh-152373: Fix the pdb until command not stepping over a list comprehension when \ 
a breakpoint is set on it. Patch by tonghuaroot.
gh-152204: Fix the pure-Python implementations of datetime.date.fromisoformat(), \ 
datetime.time.fromisoformat() and datetime.datetime.fromisoformat() silently \ 
accepting some malformed ISO 8601 strings, such as non-ASCII digits or a sign in \ 
a fixed-width field (for example '2020+12' or \ 
'20201212T0102٣٤'). Each field is now required to be exactly N ASCII \ 
digits, matching the C implementation.
gh-133998: Fix tarfile.open() in streaming write mode (w|gz) raising \ 
struct.error when given an mtime outside the range of the gzip header’s 32-bit \ 
timestamp field. Out-of-range values are now stored as 0, matching gzip.
gh-117807: Fix mimetypes initialization from MIME map files containing invalid \ 
UTF-8 bytes.
gh-143008: Fix race conditions when re-initializing a io.TextIOWrapper object.
gh-145856: Fix plistlib.dumps() and plistlib.dump() so that skipkeys=True \ 
together with sort_keys=True correctly drops non-string keys when the dictionary \ 
contains a mix of string and non-string keys. Previously the sort ran before the \ 
filter and raised TypeError.
gh-143376: concurrent.interpreters: fix a crash when internal cross-interpreter \ 
channel ends have incorrect channel IDs. Patch by Bénédikt Tran.
gh-146065: Fix a crash in asyncio.Future iterator when send() is called after \ 
throw() or close().
gh-143008: Fix crash in io.TextIOWrapper when reentrant io.TextIOBase.detach() \ 
is called reentrantly from the underlying buffer.
gh-129605: Improve exception handling when computing suggestions in \ 
traceback.py. This fixes a bug that could cause PyREPL to exit unexpectedly.
gh-102967: A bug in doctest._SpoofOut.truncate() was causing None to be passed \ 
to StringIO.seek() when no size was given. A simple fix skips the seek call when \ 
no size is given so the buffer can be truncated from the current position.
gh-82039: http.cookiejar.FileCookieJar.load() now checks the first, format \ 
signature line in a case-insensitive manner. Patch by Ashley Harvey.
gh-70758: Creating a new turtle screen after the previous one was closed no \ 
longer raises turtle.Terminator on the first turtle command.
bpo-44012: The exploded attribute of ipaddress.IPv6Address and \ 
ipaddress.IPv6Interface now supports addresses with a scope ID (link-local \ 
addresses). Previously the former raised AddressValueError and the latter \ 
omitted the scope ID.
gh-83869: Fix tarfile reading an archive with a GNU sparse 1.0 member whose size \ 
is set in the pax extended header. The offset of the next header was computed \ 
from the offset of the data, which is already past the sparse map, and from the \ 
size of the member, which can be the apparent size of the sparse file. All \ 
following members were unreachable.
gh-61366: http.cookiejar.MozillaCookieJar now reads session cookies written by \ 
curl and Wget, which use 0 in the expiration time field. Contributed by \ 
Jérémie Detrey.
Documentation
gh-142083: Document the 'w' type code in the array.array docstring, so \ 
that it lists the same type codes as array.typecodes and the array module \ 
documentation.
gh-107689: Added docstrings to abstract ctypes.
Tests
gh-159293: Restore the recursion limit after the free-threading recursion-limit \ 
race test to avoid failures in subsequent tests run in the same process.
gh-159211: The iOS testbed no longer gathers simulator diagnostics when a test \ 
run fails.
gh-157628: In regrtest, only consider that a test leaks if all test runs leak at \ 
least one file descriptor. For example, ignore “[0, 1, -1] file descriptors, \ 
sum=0” deltas, instead of reporting a leak. Patch by Victor Stinner.
gh-140550: Enable limited C API tests on Free Threading in test_cext and \ 
test_cppext: test the Py_TARGET_ABI3T macro. Patch by Victor Stinner.
gh-75876: A test decorated with bigmemtest() now runs in a subprocess if it \ 
really allocates the memory it asks for (that is, if the -M option is used), so \ 
that the memory it uses and the address space it fragments are released when it \ 
ends. A dummy run stays in the process. The separate memory watchdog process is \ 
no longer needed: the parent process watches the memory usage of the subprocess.
gh-155411: Fix test.support.subTests() for asynchronous test methods. They were \ 
wrapped in a synchronous function, which discarded the coroutine without \ 
awaiting it, so the test silently did not run at all.
gh-132581: The list of tests which altered the execution environment now \ 
includes the reasons why the environment was considered altered, for example an \ 
unraisable exception or a modified sys.path. The final result no longer repeats \ 
the same state twice (like ENV CHANGED then ENV CHANGED).
gh-155109: Add test.support.run_with_limited_c_stack() and use it in tests that \ 
exhaust the C stack with a fixed number of recursive calls, so that their \ 
outcome no longer depends on the C stack size.
Build
gh-143632: Fix the check that disables PR_SET_VMA_ANON_NAME on musl libc: it \ 
tested an unset variable, so it never had any effect and the build could fail \ 
with a redefinition of struct prctl_mm_map.
gh-159759: Fix the libpython.static path in PEP 739 build-details.json, which \ 
pointed to a file that is not installed when building with --enable-shared, and \ 
no longer list a static library for framework builds, which do not install one.
gh-159440: The version string reported by sys.version no longer carries a \ 
spurious -dirty suffix when CPython is built out-of-tree from a clean git \ 
checkout: the build stamp now checks the source tree instead of the build \ 
directory.
gh-158683: Fix the Modules/Setup entry for the _zstd module by adding missing \ 
source files.
gh-157142: Fix the link of Programs/_freeze_module when extension modules are \ 
built in (MODULE_BUILDTYPE=static) and the test modules are enabled: \ 
Modules/getpath_noop.c now defines _Py_Get_Getpath_CodeObject(), which \ 
_testinternalcapi uses.
gh-155911: Fix curses detection when a curses library is already in LIBS. Patch \ 
by Shamil Abdulaev.
Windows
gh-159880: Fix a key handle leak in winreg.CreateKey(), winreg.CreateKeyEx() and \ 
winreg.OpenKey() when the winreg.OpenKey/result audit hook fails.
gh-157906: Fix an incorrect architecture macro check that prevented CPU \ 
prefetching in the free-threaded garbage collector on 32-bit Windows builds.
gh-157789: Use compiler option -Og in case of clang-cl debug builds on Windows \ 
to reduce stack usage. Patch by Chris Eibl.
gh-72353: Reading from the console on Windows now continues if the read was \ 
cancelled by Ctrl+C, but the SIGINT handler did not raise an exception. \ 
Previously the read ended as if at end of file.
gh-86427: Fix the encoding of the standard streams in the legacy Windows stdio \ 
mode (PYTHONLEGACYWINDOWSSTDIO). It is now the code page of the console, as in \ 
Python 3.7, not the ANSI code page.
gh-87587: os.device_encoding() on Windows now returns the code page of any \ 
console file descriptor, not only 0, 1 and 2, and returns None for other \ 
character devices like NUL. The UTF-8 code page is now reported as \ 
"utf-8" instead of "cp65001".
macOS
gh-159739: Propagate errors that occur while converting macOS system proxy settings.
IDLE
gh-159517: Fix the completion list and the call tip grabbing the focus on macOS \ 
with Tcl/Tk 9.1.
gh-56596: Make IDLE keyboard shortcuts with ascii letters work when Caps Lock is \ 
on even when only one of the upper and lowercase versions are defined.
gh-64007: IDLE no longer applies syntax coloring to the text entered for input() \ 
in the Shell.
gh-85560: Fix IDLE failing to find the opening parenthesis when a continuation \ 
line inside the parentheses starts with else of a conditional expression or with \ 
yield.
gh-75487: Fix saving a truncated number when an integer entry in the IDLE \ 
Settings dialog is blanked with the Backspace key.
gh-74112: Ctrl-C in the IDLE Shell now interrupts blocking calls such as \ 
time.sleep() and socket.recv.
gh-151471: Colorize the soft keyword type in IDLE.
gh-103089: IDLE no longer hangs when opening a file with very long lines. Only \ 
the first 2,000 characters of a line are colorized.
gh-70331: IDLE no longer fails to start with python -m idlelib, and its user \ 
process no longer fails to start, when the current directory contains user files \ 
with the same names as standard library modules that IDLE imports, such as \ 
random.py or tkinter.py.
gh-93016: Fix parsing of command line arguments in the IDLE “Run… \ 
Customized” dialog on Windows: backslashes are no longer treated as escape \ 
characters. Fix also display of the previous arguments in the dialog.
gh-69365: The IDLE search dialogs now show a regular expression error below the \ 
entry instead of in a message box.
gh-105689: Fix calltips, parenthesis matching and auto-indent in the IDLE Shell \ 
after output containing unbalanced quotes or parentheses.
gh-60402: In IDLE, Tab in a string that is not the start of a file name inserts \ 
a tab instead of opening the completion list.
gh-68453: Fix running IDLE with the -s option together with -c, -r or -: the \ 
command or script now runs after the startup file, without an error dialog and \ 
without restarting the shell.
gh-69919: IDLE now reports any exception raised by compiling the source, such as \ 
MemoryError for too deeply nested source, instead of hanging the Shell.
gh-91398: Remove the border around the IDLE Shell sidebar, which was drawn in \ 
the window background color and stood out with dark themes.
gh-71136: Fix a hang of the IDLE Shell when code run under the debugger raises \ 
KeyboardInterrupt.
gh-154511: Consolidate IDLE’s mouse wheel handling in idlelib.util. \ 
wheel_event moves there from idlelib.tree and joins x11_buttons, which tells \ 
whether Tk reports wheel rotations to a widget as \ 
<Button-4>/<Button-5> events, and bind_wheel, which binds whichever \ 
events Tk sends.
gh-156896: Stop deleting tkinter submodules when idlelib.run is imported.
gh-153480: Fix IDLE failing to start when opening a file which does not exist \ 
yet. Fix a traceback when a file open in the IDLE editor is deleted by another \ 
program; IDLE now asks whether to close the window, save the file elsewhere, or \ 
ignore it.
gh-66172: IDLE no longer fails to start when a user configuration file is \ 
corrupt. The unparsable file is renamed with a “.bad” suffix, default \ 
settings are used instead, and a warning lists the affected files.
gh-90304: Prevent IDLE from failing to start when a font reports a zero width \ 
for the '0' character. Such a broken font caused a ZeroDivisionError; \ 
the editor now falls back to the configured width.
gh-135511: Fix display of NameError and AttributeError with multi-line message.
Tools/Demos
gh-158451: python-gdb.py is now able to format an invalid Unicode string: render \ 
invalid characters as \Uhhhhhhhh instead of raising an exception. Patch by \ 
Victor Stinner.
gh-156219: Fix Argument Clinic generating code which reads an optional \ 
positional argument which was not passed, if the function has a **kwds \ 
parameter.
gh-113318: Fix Argument Clinic for @getter and @setter in a preprocessor \ 
conditional block. It failed with an internal error. Argument Clinic now also \ 
rejects the accessors of the same attribute with different C basenames, and the \ 
same accessor defined twice, which silently generated invalid or duplicated \ 
entries of PyGetSetDef.
gh-155218: Fix Argument Clinic generating the flags of the optional groups in \ 
different order on 32-bit and 64-bit platforms.
gh-155207: Argument Clinic now supports the --dry-run and --diff options. They \ 
list the files which would be changed, or write a unified diff of the changes to \ 
the standard output, without modifying any file.
gh-64502: Fix Argument Clinic support of parameters with a default value used \ 
together with optional groups. Such parameters were always required in the \ 
generated parsing code.
C API
gh-159739: Fix a crash in _PyTuple_Resize() when resizing a non-empty tuple to a \ 
negative or too large size. It now raises SystemError or MemoryError \ 
respectively.
gh-159739: PyInitConfig_SetStr() now releases a previously configured value and \ 
preserves it if conversion of the replacement fails.
gh-159739: Fix a reference leak when _PyTuple_Resize() fails.
gh-149044: Fix the PySlot_END macro for C++: initialize all members to avoid \ 
compiler warnings. Patch by Victor Stinner.
gh-158810: Fix Py_ARRAY_LENGTH() macro on C++: do not use \ 
__builtin_types_compatible_p() on C++. Patch by Victor Stinner.
gh-158451: Fix _PyUnicodeWriter_WriteLatin1String() when the writer buffer kind \ 
is UCS-2 or UCS-4. Patch by Victor Stinner.
gh-157649: Fix Py_CLEAR and Py_SETREF macros on C++: implement them using auto \ 
instead of decltype(). Using decltype() produced invalid code when \ 
clearing/setting an array item. Patch by Victor Stinner.
gh-142217: Add tests on the undocumented and deprecated _Py_Identifier C API. \ 
Patch by Victor Stinner.
gh-157384: PyImport_CreateModuleFromInitfunc() now sets the package context \ 
while calling initfunc, so that a single-phase init submodule created with only \ 
the last component of its name gets the full name from the spec.
gh-157242: Fix PyBytesWriter_Resize() to handle properly memory allocation \ 
failure. Leave the writer unchanged on error, instead of leaving it in an \ 
inconsistent state. Patch by Victor Stinner.
gh-156101: Don’t set the result in error in PyLong_AsInt32(), \ 
PyLong_AsUInt32(), PyLong_AsInt64() and PyLong_AsUInt64(). Leave the result \ 
unchanged in this case. Patch by Victor Stinner.

Log message:
python315 py315-html-docs: added version 3.15.0

Python 3.15 is the latest stable release of the Python programming language,
with a mix of changes to the language, the implementation, and the standard
library. The biggest changes include lazy imports, frozendict and sentinel
builtins, UTF-8 as the default encoding, unpacking in comprehensions, and a
stable ABI for free-threaded builds.

The library changes include a new profiling package with Tachyon, a
high-frequency statistical sampling profiler, more color in command-line
output, as well as the usual deprecations and removals, and improvements in
user-friendliness and correctness.