Justin Applegate [Thu, 14 Aug 2025 19:22:37 +0000 (13:22 -0600)]
gh-135241: Make unpickling of booleans in protocol 0 more strict (GH-135242)
The Python pickle module looks for "00" and "01" but _pickle only looked
for 2 characters that parsed to 0 or 1, meaning some payloads like "+0" or
" 0" would lead to different results in different implementations.
Serhiy Storchaka [Thu, 14 Aug 2025 18:13:22 +0000 (21:13 +0300)]
gh-135661: Fix CDATA section parsing in HTMLParser (GH-135665)
"] ]>" and "]] >" no longer end the CDATA section.
Make CDATA section parsing context depending.
Add private method HTMLParser._set_support_cdata() to change the context.
If called with True, "<[CDATA[" starts a CDATA section which ends with "]]>".
If called with False, "<[CDATA[" starts a bogus comments which ends with ">".
Sam Gross [Wed, 13 Aug 2025 18:15:12 +0000 (14:15 -0400)]
gh-137400: Fix thread-safety issues when profiling all threads (gh-137518)
There were a few thread-safety issues when profiling or tracing all
threads via PyEval_SetProfileAllThreads or PyEval_SetTraceAllThreads:
* The loop over thread states could crash if a thread exits concurrently
(in both the free threading and default build)
* The modification of `c_profilefunc` and `c_tracefunc` wasn't
thread-safe on the free threading build.
Jelle Zijlstra [Wed, 13 Aug 2025 13:47:47 +0000 (06:47 -0700)]
gh-137226: Fix behavior of ForwardRef.evaluate with type_params (#137227)
The previous behavior was copied from earlier typing code. It works around the way
typing.get_type_hints passes its namespaces, but I don't think the behavior is logical
or correct.
Petr Viktorin [Wed, 13 Aug 2025 07:03:05 +0000 (09:03 +0200)]
gh-131146: Fall back to `month_name` if `standalone_month_name`s aren't distinct (GH-137674)
Some systems reportedly don't expand '%OB' and '%Ob'.
In this case (and similar theoretically possible ones, like expanding to empty
string or 'OB'), fall back to the month_name & month_abbr.
RafaelWO [Tue, 12 Aug 2025 19:28:27 +0000 (21:28 +0200)]
gh-136672: Docs: Move Enum functions and add examples (GH-136791)
* Docs: Move Enum functions and add examples
When the `Enum` functions `_add_alias_` and `_add_value_alias_` were added in de6bca956432cc852a4a41e2a2cee9cdacd19f35, the documentation for them was done under `EnumType` instead of `Enum`.
This change moves them to the docs of the `Enum` class and adds an example for each function.
Jelle Zijlstra [Tue, 12 Aug 2025 11:16:54 +0000 (04:16 -0700)]
gh-135228: When @dataclass(slots=True) replaces a dataclass, make the original class collectible (take 2) (GH-137047)
Remove the `__dict__` and `__weakref__` descriptors from the original class when creating a dataclass from it.
An interesting hack, but more localized in scope than gh-135230.
This may be a breaking change if people intentionally keep the original class around
when using `@dataclass(slots=True)`, and then use `__dict__` or `__weakref__` on the
original class.
Brett Cannon [Mon, 11 Aug 2025 23:18:54 +0000 (16:18 -0700)]
GH-137426: Remove code deprecation of `importlib.abc.ResourceLoader` (GH-137567)
Enough other classes in `importlib.abc` inherit from the class and the deprecation was to redirect people to `TraversableResources`. The documentation now makes it clear the class only exists for backwards compatibility.
---------
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
Sam Gross [Mon, 11 Aug 2025 15:41:44 +0000 (11:41 -0400)]
gh-137400: Fix a crash when disabling profiling across all threads (gh-137471)
The `PyEval_SetProfileAllThreads` function and other related functions
had a race condition on `tstate->c_profilefunc` that could lead to a
crash when disable profiling or tracing on all threads while another
thread is starting to profile or trace a a call.
There are still potential crashes when threads exit concurrently with
profiling or tracing be enabled/disabled across all threads.
gh-137026: Add an explainer guide for asyncio (GH-137215)
* - Add an explainer guide (aka HOWTO, not how-to) for asyncio.
* Fix linter errors.
* - Enforce max line length of roughly 79 chars.
- Start sentences on new lines to minimize disruption of diffs.
* Add reference to subinterpreters.
* - Significantly reduce article size. Remove both example sections & "Which concurrency do I want" section.
* Align section-header lengths with section names.
* - Remove reference to deleted section.
* - Fix a variety of rote style guide items like title-alignment, use of ie and $, and so forth.
- Add links to other parts of the docs for keywords and objects like await, coro, task, future, etc.
* - One last title alignment.
* - Style nit.
* - Rework a variety of I statements.
* Lint fix.
* - Firm up commentary on yield from in corotuines.
Remove private _PyThreadState and _PyInterpreterState C API
functions: move them to the internal C API (pycore_pystate.h and
pycore_interp.h). Don't export most of these functions anymore, but
still export functions used by tests.
Remove _PyThreadState_Prealloc() and _PyThreadState_Init() from the C
API, but keep it in the stable API.
GH-135552: Make the GC clear weakrefs later (GH-136189)
Fix a bug caused by the garbage collector clearing weakrefs too early. The
weakrefs in the ``tp_subclasses`` dictionary are needed in order to correctly
invalidate type caches (for example, by calling ``PyType_Modified()``).
Clearing weakrefs before calling finalizers causes the caches to not be
correctly invalidated. That can cause crashes since the caches can refer to
invalid objects. Defer the clearing of weakrefs without callbacks until after
finalizers are executed.
GH-119085: Move comment in Python/gc.c to correct place.
In GH-116206, the comment about moving reachable objects to next generation
got moved from its original place to a place where there is no code below
it. Put the comment back to where the actual movement of reachable objects
happens.
gh-137044: Support large limit values in getrlimit() and setrlimit() (GH-137338)
* Return large limit values as positive integers instead of negative integers
in resource.getrlimit().
* Accept large values and reject negative values (except RLIM_INFINITY)
for limits in resource.setrlimit().
gh-137463: Update `validate_abstract_methods` in `test_collections.py` (#137464)
Update `validate_abstract_methods` in `test_collections.py`
The test for missing abstract methods in `validate_abstract_methods` incorrectly attempted to instantiate the generated class `C` with an argument (`C(name)`), which always raises a `TypeError: C() takes no arguments`. Although the test originally passes, it passes for the wrong reason.
This change makes the test correctly validate the enforcement of abstract methods in ABCs.
Victor Stinner [Wed, 6 Aug 2025 12:35:27 +0000 (14:35 +0200)]
gh-58124: Avoid CP_UTF8 in UnicodeDecodeError (#137415)
Fix name of the Python encoding in Unicode errors of the code page
codec: use "cp65000" and "cp65001" instead of "CP_UTF7" and "CP_UTF8"
which are not valid Python code names.
gh-137134: Update SQLite to 3.50.4 for binary releases (GH-137135)
* Update SQLite to 3.50.3 for binary releases.
* macOS and Windows news entries. what about Android?
* update sbom hash
* newline fix via regen-sbom
* news wording
* Update SQLite to 3.50.4 for binary releases.
* update 3.50.4.0.tar.gz hash in sbom & regen-sbom to fix whitespace
* Postpone to a separate PR the build-installer changes to support additional hash types
Co-authored-by: Erlend E. Aasland <erlend.aasland@protonmail.com> Co-authored-by: Claude <noreply@anthropic.com> Co-authored-by: Ned Deily <nad@python.org>
Zachary Ware [Tue, 5 Aug 2025 19:44:27 +0000 (14:44 -0500)]
Fix buildbot release status link in CONTRIBUTING.rst (GH-137429)
The existing link works, but includes the legacy `/all` part of the path
which causes a scary-looking banner about a misconfiguration on the
`Home` page when in reality it's the link that includes a deprecated path.
projects / thirdparty / Python / cpython.git / log
