gh-114258: Refactor Argument Clinic function name parser (#114930)
Refactor state_modulename_name() of the parsing state machine, by
adding helpers for the sections that deal with ...:
1. parsing the function name
2. normalizing "function kind"
3. dealing with cloned functions
4. resolving return converters
5. adding the function to the DSL parser
mpage [Thu, 15 Feb 2024 08:22:47 +0000 (00:22 -0800)]
gh-112050: Make collections.deque thread-safe in free-threaded builds (#113830)
Use critical sections to make deque methods that operate on mutable
state thread-safe when the GIL is disabled. This is mostly accomplished
by using the @critical_section Argument Clinic directive, though there
are a few places where this was not possible and critical sections had
to be manually acquired/released.
Eric Snow [Wed, 14 Feb 2024 23:07:22 +0000 (16:07 -0700)]
gh-115482: Assume the Main Interpreter is Always Running "main" (gh-115484)
This is a temporary fix to unblock embedders that do not call Py_Main().
_PyInterpreterState_IsRunningMain() will always return true for the main interpreter, even in corner cases where it technically should not. The (future) full solution will do the right thing in those corner cases.
Sam Gross [Wed, 14 Feb 2024 21:41:29 +0000 (16:41 -0500)]
gh-112529: Use _PyThread_Id() in mimalloc in free-threaded build (#115488)
The free-threaded GC uses mimallocs segment thread IDs to restore
the overwritten `ob_tid` thread ids in PyObjects. For that reason, it's
important that PyObjects and mimalloc use the same identifiers.
mpage [Wed, 14 Feb 2024 20:15:05 +0000 (12:15 -0800)]
gh-115041: Add wrappers that are atomic only in free-threaded builds (#115046)
These are intended to be used in places where atomics are required in
free-threaded builds but not in the default build. We don't want to
introduce the potential performance overhead of an atomic operation in the
default build.
T. Wouters [Tue, 13 Feb 2024 23:58:49 +0000 (00:58 +0100)]
gh-115421: Update the list of installed test subdirectories. (#115422)
Update the list of installed test subdirectories with all newly added
subdirectories of Lib/test, so that the tests in those directories are
properly installed.
Eric Snow [Tue, 13 Feb 2024 21:56:49 +0000 (14:56 -0700)]
gh-76785: Improved Subinterpreters Compatibility with 3.12 (gh-115424)
For the most part, these changes make is substantially easier to backport subinterpreter-related code to 3.12, especially the related modules (e.g. _xxsubinterpreters). The main motivation is to support releasing a PyPI package with the 3.13 capabilities compiled for 3.12.
A lot of the changes here involve either hiding details behind macros/functions or splitting up some files.
Steve Dower [Tue, 13 Feb 2024 00:28:35 +0000 (00:28 +0000)]
gh-89240: Enable multiprocessing on Windows to use large process pools (GH-107873)
We add _winapi.BatchedWaitForMultipleObjects to wait for larger numbers of handles.
This is an internal module, hence undocumented, and should be used with caution.
Check the docstring for info before using BatchedWaitForMultipleObjects.
gh-114099: Refactor configure and Makefile to accomodate non-macOS frameworks (#115120)
Part of the PEP 730 work to add iOS support.
This change lays the groundwork for introducing iOS/tvOS/watchOS
frameworks; it includes the structural refactoring needed so that iOS
branches can be added into in a subsequent PR.
Summary of changes:
* Updates config.sub to the 2024-01-01 release. This is the "as
released" version of config.sub.
* Adds a RESSRCDIR variable to allow sharing of macOS and iOS Makefile
steps.
* Adds an INSTALLTARGETS variable so platforms can customise which
targets are actually installed. This will be used to exclude certain
targets (e.g., binaries, manfiles) from iOS framework installs.
* Adds a PYTHONFRAMEWORKINSTALLNAMEPREFIX variable; this is used as
the install name for the library. This is needed to allow for iOS
frameworks to specify an @rpath-based install name.
* Evaluates MACHDEP earlier in the configure process so that
ac_sys_system is available.
* Modifies _PYTHON_HOST_PLATFORM evaluation for cross-platform builds
so that the CPU architecture is differentiated from the host
identifier. This will be used to generate a _PYTHON_HOST_PLATFORM
definition that includes ABI information, not just CPU architecture.
* Differentiates between SOABI_PLATFORM and PLATFORM_TRIPLET.
SOABI_PLATFORM is used in binary module names, and includes the ABI,
but not the OS or CPU architecture (e.g.,
math.cpython-313-iphonesimulator.dylib). PLATFORM_TRIPLET is used
as the sys._multiarch value, and on iOS will contains the ABI and
architecture (e.g., iphoneos-arm64). This differentiation hasn't
historically been needed because while macOS is a multiarch platform,
it uses a bare darwin as PLATFORM_TRIPLE.
* Removes the use of the deprecated -Wl,-single_module flag when
compiling macOS frameworks.
* Some whitespace normalisation where there was a mix of spaces and tabs
in a single block.
Eugene Toder [Mon, 12 Feb 2024 12:44:56 +0000 (07:44 -0500)]
gh-89039: Call subclass constructors in datetime.*.replace (GH-114780)
When replace() method is called on a subclass of datetime, date or time,
properly call derived constructor. Previously, only the base class's
constructor was called.
Also, make sure to pass non-zero fold values when creating subclasses in
various methods. Previously, fold was silently ignored.
Nikita Sobolev [Mon, 12 Feb 2024 11:59:58 +0000 (14:59 +0300)]
gh-114785: Remove content from `Porting from Python2` how-to (#114805)
Keep the page though, because people might still rely on it (the traffic shows that they do).
Instead of our own manual we now give links to the 3rd-party ones.
Co-authored-by: Hugo van Kemenade <1324225+hugovk@users.noreply.github.com>
John Belmonte [Mon, 12 Feb 2024 11:17:51 +0000 (20:17 +0900)]
gh-114563: C decimal falls back to pydecimal for unsupported format strings (GH-114879)
Immediate merits:
* eliminate complex workarounds for 'z' format support
(NOTE: mpdecimal recently added 'z' support, so this becomes
efficient in the long term.)
* fix 'z' format memory leak
* fix 'z' format applied to 'F'
* fix missing '#' format support
Serhiy Storchaka [Sun, 11 Feb 2024 13:19:44 +0000 (15:19 +0200)]
gh-97959: Fix rendering of routines in pydoc (GH-113941)
* Class methods no longer have "method of builtins.type instance" note.
* Corresponding notes are now added for class and unbound methods.
* Method and function aliases now have references to the module or the
class where the origin was defined if it differs from the current.
* Bound methods are now listed in the static methods section.
* Methods of builtin classes are now supported as well as methods of
Python classes.
Serhiy Storchaka [Sun, 11 Feb 2024 11:06:43 +0000 (13:06 +0200)]
gh-49766: Make date-datetime comparison more symmetric and flexible (GH-114760)
Now the special comparison methods like `__eq__` and `__lt__` return
NotImplemented if one of comparands is date and other is datetime
instead of ignoring the time part and the time zone or forcefully
return "not equal" or raise TypeError.
It makes comparison of date and datetime subclasses more symmetric
and allows to change the default behavior by overriding
the special comparison methods in subclasses.
It is now the same as if date and datetime was independent classes.
Serhiy Storchaka [Sun, 11 Feb 2024 10:43:14 +0000 (12:43 +0200)]
gh-97928: Partially restore the behavior of tkinter.Text.count() by default (GH-115031)
By default, it preserves an inconsistent behavior of older Python
versions: packs the count into a 1-tuple if only one or none
options are specified (including 'update'), returns None instead of 0.
Except that setting wantobjects to 0 no longer affects the result.
Add a new parameter return_ints: specifying return_ints=True makes
Text.count() always returning the single count as an integer
instead of a 1-tuple or None.
Hood Chatham [Sun, 11 Feb 2024 09:59:50 +0000 (01:59 -0800)]
gh-114807: multiprocessing: don't raise ImportError if _multiprocessing is missing (#114808)
`_multiprocessing` is only used under the `if _winapi:` block, this moves the import to be within the `_winapi` ImportError handling try/except for equivalent treatment.
Barney Gale [Sat, 10 Feb 2024 18:12:34 +0000 (18:12 +0000)]
GH-115060: Speed up `pathlib.Path.glob()` by removing redundant regex matching (#115061)
When expanding and filtering paths for a `**` wildcard segment, build an `re.Pattern` object from the subsequent pattern parts, rather than the entire pattern, and match against the `os.DirEntry` object prior to instantiating a path object. Also skip compiling a pattern when expanding a `*` wildcard segment.
Sam Gross [Fri, 9 Feb 2024 22:08:32 +0000 (17:08 -0500)]
gh-110481: Implement inter-thread queue for biased reference counting (#114824)
Biased reference counting maintains two refcount fields in each object:
`ob_ref_local` and `ob_ref_shared`. The true refcount is the sum of these two
fields. In some cases, when refcounting operations are split across threads,
the ob_ref_shared field can be negative (although the total refcount must be
at least zero). In this case, the thread that decremented the refcount
requests that the owning thread give up ownership and merge the refcount
fields.