cpython

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Jelle Zijlstra d36a3f6970 gh-159739: Release replaced type alias values (#160167 )

A type alias can be evaluated again before an earlier evaluation finishes, either recursively or in another thread. The later completion overwrites the cached value without releasing it, permanently leaking that value; synchronize cache access and release the replaced value outside the lock. Backport to 3.15 and 3.14.

2026-10-22 14:05:16 +00:00

clinic

gh-114258: Use Argument Clinic for `__hash__` (gh-160059)

2026-10-22 07:54:04 +00:00

mimalloc

gh-159111: Add missing downstream changes when upgrade to 2.5.2. (gh-160207)

2026-10-21 23:26:29 -07:00

stringlib

gh-158803: Fix crash in bytes.join() on a concurrently mutated list (#158910 )

2026-10-08 15:58:00 +02:00

abstract.c

gh-157526: Call __instancecheck__ and __subclasscheck__ without creating a bound method (#157670 )

2026-09-22 11:16:30 +05:30

boolobject.c

gh-111178: remove redundant casts for functions with correct signatures (#131673 )

2025-04-01 17:18:11 +02:00

bytearrayobject.c

gh-160179: Leave bytearray empty when __init__() fails midway (GH-160180)

2026-10-21 22:20:54 -07:00

bytes_methods.c

gh-150285: Fix too long docstrings in builtins (GH-150293)

2026-05-24 15:03:32 +03:00

bytesobject.c

gh-159739: Reject the minimum dynamic formatting width (#159780 )

2026-10-20 10:20:20 -07:00

call.c

gh-151157: Speed up PyObject_CallMethod via _PyObject_GetMethod (#151158 )

2026-10-05 18:44:28 +00:00

capsule.c

gh-76595: PyCapsule_Import() now imports submodules if needed (GH-6898)

2026-08-10 21:36:15 +03:00

cellobject.c

Fix a stray newline in the cell type docstring (#157240 )

2026-09-10 16:54:47 +01:00

classobject.c

gh-145779: Improve classmethod/staticmethod scaling in free-threaded build (#145826 )

2026-03-17 14:24:44 -04:00

codeobject.c

gh-129724: Intern string constants in the compiler, not per code object (GH-159193)

2026-10-12 21:37:55 -07:00

complexobject.c

gh-155526: Don't check errno in abs(complex) (#155527 )

2026-09-11 17:46:59 +02:00

descrobject.c

gh-159739: Break reference cycles involving property objects (#159978 )

2026-10-20 21:31:59 -07:00

dictnotes.txt

bpo-46845: Reduce dict size when all keys are Unicode (GH-31564)

2022-03-02 08:09:28 +09:00

dictobject.c

gh-154318: Guard C recursion when hashing nested tuples and frozendicts (GH-154362)

2026-10-21 15:10:17 -07:00

enumobject.c

gh-87613: Argument Clinic vectorcall decorator (GH-145381)

2026-09-10 16:53:36 +02:00

exceptions.c

gh-113318: Better implementation of @getter and @setter in Argument Clinic (GH-156066)

2026-09-19 18:48:39 +03:00

fileobject.c

gh-155496: Use Argument Clinic for more functions and methods (GH-158134)

2026-09-27 19:00:22 +03:00

floatobject.c

gh-87613: Use AC vectorcall for float (GH-158201)

2026-10-13 12:21:19 +02:00

frameobject.c

gh-124697: Represent inlined comprehensions as subscopes in the symbol table (#156819 )

2026-09-23 20:31:57 +01:00

funcobject.c

gh-159136: Avoid stop-the-world when setting function name attributes (gh-159269)

2026-10-16 20:24:12 -07:00

genericaliasobject.c

gh-159739: Keep generic alias arguments alive while formatting errors (#159981 )

2026-10-20 21:33:19 -07:00

genobject.c

gh-158304: Avoid creating StopIteration for every value yielded by an async generator (#158315 )

2026-10-22 14:18:28 +05:30

interpolationobject.c

gh-150319: Replace all documentation which says "See PEP 585" (#150325 )

2026-06-02 21:13:34 +01:00

iterobject.c

gh-157361: Implement aiter() in Python instead of C (#157687 )

2026-10-20 15:33:36 +05:30

lazyimportobject.c

gh-159288: Avoid segfault by adding missing recursion checks when walking lazy import chains (#159289 )

2026-10-14 13:51:36 +00:00

listobject.c

gh-114258: Use Argument Clinic for __mul__/__imul__ (GH-160049)

2026-10-21 20:17:22 +00:00

listsort.txt

gh-135551: Change how sorting picks minimum run length (#135553 )

2025-06-26 23:48:05 -05:00

longobject.c

gh-160162: Fix crash in int left shift with huge count on 32-bit (GH-160163)

2026-10-21 20:50:05 -07:00

memoryobject.c

gh-155742: Use PyMem_Malloc() in memoryview.hex() (#158582 )

2026-10-02 17:51:47 +02:00

methodobject.c

gh-157833: Fix specialized C calls with additional method flags (GH-157834)

2026-09-30 14:37:24 +01:00

moduleobject.c

gh-159739: Handle module filename encoding errors (#159749 )

2026-10-19 19:30:21 -07:00

namespaceobject.c

gh-155496: Use Argument Clinic for more functions and methods (GH-158134)

2026-09-27 19:00:22 +03:00

object_layout_312.gv

GH-115776: Embed the values array into the object, for "normal" Python objects. (GH-116115)

2024-04-02 11:59:21 +01:00

object_layout_312.png

gh-71648: Optimize PNG files (GH-138842)

2025-09-12 20:13:05 +00:00

object_layout_313.gv

GH-115776: Embed the values array into the object, for "normal" Python objects. (GH-116115)

2024-04-02 11:59:21 +01:00

object_layout_313.png

gh-71648: Optimize PNG files (GH-138842)

2025-09-12 20:13:05 +00:00

object_layout_full_312.gv

GH-96068: Document object layout (GH-96069)

2022-08-23 13:55:43 +01:00

object_layout_full_312.png

gh-71648: Optimize PNG files (GH-138842)

2025-09-12 20:13:05 +00:00

object_layout_full_313.gv

GH-115776: Embed the values array into the object, for "normal" Python objects. (GH-116115)

2024-04-02 11:59:21 +01:00

object_layout_full_313.png

gh-71648: Optimize PNG files (GH-138842)

2025-09-12 20:13:05 +00:00

object_layout.md

GH-115776: Allow any fixed sized object to have inline values (GH-123192)

2024-08-21 15:52:04 +01:00

object.c

gh-157361: Implement aiter() in Python instead of C (#157687 )

2026-10-20 15:33:36 +05:30

obmalloc.c

gh-159111: Update vendored mimalloc to v2.5.2 (gh-159112)

2026-10-21 17:41:07 -07:00

odictobject.c

gh-114258: Update AC to support @critical_section for tp_iternext (gh-159962)

2026-10-21 00:25:02 +00:00

picklebufobject.c

gh-135607: remove null checking of weakref list in dealloc of extension modules and objects (#135614 )

2025-06-30 11:14:31 +00:00

rangeobject.c

gh-114258: Update AC to support @critical_section for tp_iternext (gh-159962)

2026-10-21 00:25:02 +00:00

README

Issue #18093 : Factor out the programs that embed the runtime

2014-07-25 21:52:14 +10:00

sentinelobject.c

gh-148829: Make sentinels' repr and module customizable (#149654 )

2026-05-19 09:18:56 -07:00

setobject.c

gh-114258: Use Argument Clinic for __repr__ (GH-160011)

2026-10-21 18:06:57 +00:00

sliceobject.c

gh-150319: Replace all documentation which says "See PEP 585" (#150325 )

2026-06-02 21:13:34 +01:00

structseq.c

gh-155496: Use Argument Clinic for more functions and methods (GH-158134)

2026-09-27 19:00:22 +03:00

templateobject.c

gh-159739: Initialize template iterator references before allocating (#159773 )

2026-10-20 10:19:30 -07:00

tupleobject.c

gh-154318: Guard C recursion when hashing nested tuples and frozendicts (GH-154362)

2026-10-21 15:10:17 -07:00

typeobject.c

gh-159431: Handle immortal objects in _PyObject_XDecRefDelayed() (gh-159433)

2026-10-14 14:11:48 -07:00

typevarobject.c

gh-159739: Release replaced type alias values (#160167 )

2026-10-22 14:05:16 +00:00

unicode_format.c

gh-159739: Reject the minimum dynamic formatting width (#159780 )

2026-10-20 10:20:20 -07:00

unicode_formatter.c

gh-159739: Check character formatting allocation failure (#159746 )

2026-10-19 19:29:25 -07:00

unicode_writer.c

gh-159813: Add a fast path for None in PyUnicodeWriter_WriteRepr (gh-159814)

2026-10-19 21:00:42 -07:00

unicodectype.c

gh-129117: Add unicodedata.isxidstart() function (#140269 )

2025-10-30 10:18:12 +00:00

unicodeobject.c

gh-158585: Simplify PyBytesWriter_Finish() (#158822 )

2026-10-05 04:47:04 +02:00

unicodetype_db.h

fixes gh-157633: Update Unicode data to Unicode 18.0.0 (#157634 )

2026-09-16 11:34:53 -07:00

unionobject.c

gh-150319: Replace all documentation which says "See PEP 585" (#150325 )

2026-06-02 21:13:34 +01:00

weakrefobject.c

gh-114258: Use Argument Clinic for `__hash__` (gh-160059)

2026-10-22 07:54:04 +00:00

README

Source files for various builtin objects