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Mark Shannon 633b6be8f5 GH-148960: Reduce the size of the debug stencils to less than half. (GH-150551) 
For AArch64 linux, reduces the total bytes in the code bodies from 489kb to 218kb.
Reduces the size of the stencils files from 394k lines to 167k lines.
2026-06-01 17:56:16 +01:00
..
cpython
GH-148960: Reduce the size of the debug stencils to less than half. (GH-150551)
2026-06-01 17:56:16 +01:00
internal
GH-148960: Reduce the size of the debug stencils to less than half. (GH-150551)
2026-06-01 17:56:16 +01:00
abstract.h
gh-134989: Implement PyObject_DelAttr() as a macro in the limited C API (GH-135021)
2025-06-04 15:07:52 +02:00
audit.h
gh-135755: Use private names (_Py*) for header file guards new in 3.14 (GH-135921)
2025-06-26 13:05:01 +02:00
bltinmodule.h
…
boolobject.h
gh-134989: Fix Py_RETURN_NONE in the limited C API (GH-135165)
2025-06-05 14:43:47 +02:00
bytearrayobject.h
…
bytesobject.h
gh-108765: Move standard includes to Python.h (#108769)
2023-09-01 21:03:20 +02:00
ceval.h
gh-135755: Move SPECIAL_ constants to a private header (GH-135922)
2025-06-25 13:03:05 +02:00
codecs.h
Remove private _PyCodec_Lookup() function (#106269)
2023-06-30 09:34:01 +00:00
compile.h
gh-109596: Ensure repeated rules in the grammar are not allowed and fix incorrect soft keywords (#109606)
2023-09-22 19:03:23 +01:00
complexobject.h
…
critical_section.h
gh-149225: Expose Py_CriticalSection in Stable ABI (GH-149227)
2026-05-04 17:32:17 +02:00
datetime.h
gh-141563: Add missing cast to _PyDateTime_IMPORT() (#144667)
2026-02-10 14:47:12 +00:00
descrobject.h
gh-41779: Allow defining any __slots__ for a class derived from tuple (GH-141763)
2026-01-06 11:36:00 +02:00
dictobject.h
gh-141726: Add PyDict_SetDefaultRef() to the Stable ABI (#141727)
2025-11-19 11:38:10 +00:00
dynamic_annotations.h
…
enumobject.h
…
errcode.h
gh-107450: Check for overflow in the tokenizer and fix overflow test (#110832)
2023-10-16 16:42:49 +02:00
exports.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
fileobject.h
gh-106320: Remove _PyIsSelectable_fd() C API (#107142)
2023-07-23 19:07:12 +00:00
fileutils.h
gh-67341: fix a typo in Include/fileutils.h (#136049)
2025-07-14 08:02:05 +00:00
floatobject.h
gh-141004: soft-deprecate Py_INFINITY macro (#141033)
2025-11-12 13:44:49 +01:00
frameobject.h
…
genericaliasobject.h
…
import.h
gh-149321: Remove lazy_imports=none startup mode (#149389)
2026-05-19 16:01:15 -07:00
intrcheck.h
gh-106320: Remove private _PyOS_IsMainThread() function (#108605)
2023-08-29 03:20:31 +00:00
iterobject.h
gh-106320: Remove _PyAnextAwaitable_Type from the public C API (#108597)
2023-08-29 02:05:11 +00:00
listobject.h
gh-114329: Fix PyList_GetItemRef() limited C API definition (#117520)
2024-04-03 21:02:42 +00:00
longobject.h
gh-143869: Add PEP 757 functions to the limited API (#143906)
2026-01-21 14:47:14 +01:00
marshal.h
gh-79315: Add Include/cpython/marshal.h header (#139725)
2025-10-07 23:49:08 +02:00
memoryobject.h
…
methodobject.h
gh-132097: use a macro for semantically casting function pointers (#132406)
2025-04-18 12:24:34 +02:00
modsupport.h
gh-142225: Fix PyABIInfo_VAR macro (GH-142230)
2025-12-04 10:33:15 +01:00
moduleobject.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
object.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
objimpl.h
gh-102013: Move PyUnstable_GC_VisitObjects() to Include/cpython/objimpl.h (#115560)
2024-02-16 15:49:13 +01:00
opcode_ids.h
GH-143732: SEND specialization (GH-148963)
2026-05-05 15:19:16 +01:00
opcode.h
gh-100239: replace BINARY_SUBSCR & family by BINARY_OP with oparg NB_SUBSCR (#129700)
2025-02-07 22:39:54 +00:00
osdefs.h
gh-108765: Reformat Include/osdefs.h (#108766)
2023-09-01 14:35:39 +00:00
osmodule.h
…
patchlevel.h
Python 3.16.0a0
2026-05-07 19:05:52 +03:00
py_curses.h
gh-125843: indicate which C function caused a curses.error (#125844)
2025-05-19 15:53:39 +02:00
pyabi.h
gh-148690: Build Windows freethreaded binaries into separate directory and include python3t.dll on GIL-enabled (GH-149218)
2026-05-04 17:45:08 +01:00
pyatomic.h
gh-108724: Add PyMutex and _PyParkingLot APIs (gh-109344)
2023-09-19 09:54:29 -06:00
pybuffer.h
gh-137696: Rename 'fort' parameter to 'order' in PyBuffer_* functions (#137866)
2026-03-19 16:54:27 +05:30
pycapsule.h
gh-108240: Add pycore_capsule.h internal header file (#108596)
2023-08-29 01:20:02 +00:00
pydtrace.d
…
pydtrace.h
…
pyerrors.h
gh-142349: Implement PEP 810 - Explicit lazy imports (#142351)
2026-02-12 00:15:33 +00:00
pyexpat.h
gh-149018: Use XML_SetHashSalt16Bytes in pyexpat/_elementtree when possible (#149023)
2026-05-10 18:36:26 +01:00
pyframe.h
…
pyhash.h
gh-111545: Add Include/cpython/pyhash.h header file (#112063)
2023-11-15 01:19:20 +01:00
pylifecycle.h
gh-133644: Remove deprecated Python initialization getter functions (#133661)
2025-05-09 11:39:23 +00:00
pymacconfig.h
gh-145633: Remove support for ancient ARM platforms with mixed-endian doubles (#145634)
2026-03-11 12:39:24 +01:00
pymacro.h
gh-141370: Fix undefined behavior when using Py_ABS() (GH-141548)
2025-12-05 16:24:35 +02:00
pymath.h
gh-141004: soft-deprecate Py_INFINITY macro (#141033)
2025-11-12 13:44:49 +01:00
pymem.h
gh-85283: Add PyMem_RawMalloc() to the limited C API (#108570)
2023-10-17 02:41:51 +02:00
pyport.h
gh-148850: Fix memory sanitizer false positive in os.getrandom (GH-148851)
2026-05-01 17:37:36 +02:00
pystate.h
gh-149101: Implement PEP 788 (GH-149116)
2026-05-06 17:39:30 -04:00
pystats.h
GH-124284: Add stats for refcount operations on immortal objects (GH-124288)
2024-09-23 19:10:55 +01:00
pystrcmp.h
…
pystrtod.h
gh-106320: Remove private float C API functions (#108430)
2023-08-24 19:09:49 +02:00
Python.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
pythonrun.h
gh-130396: Move PYOS_LOG2_STACK_MARGIN to internal headers (#135928)
2025-07-01 15:18:17 +02:00
pythread.h
gh-137884: Added threading.get_native_id() on Illumos/Solaris (GH-137927)
2025-08-20 17:10:44 +00:00
pytypedefs.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
rangeobject.h
…
README.rst
gh-101101: Unstable C API tier (PEP 689) (GH-101102)
2023-02-28 09:31:01 +01:00
refcount.h
gh-146636: abi3t: Define Py_GIL_DISABLED but do not use it (GH-148142)
2026-04-07 09:06:17 +02:00
setobject.h
…
sliceobject.h
gh-149685: Use the _Py prefix for private C macros (GH-149686)
2026-05-13 19:14:05 +02:00
slots_generated.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
slots.h
gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)
2026-05-05 09:18:04 +02:00
structmember.h
Fix typos in comments (#120188)
2024-06-07 10:19:41 +02:00
structseq.h
gh-149685: Use the _Py prefix for private C macros (GH-149686)
2026-05-13 19:14:05 +02:00
sysmodule.h
gh-138886: Remove deprecated PySys_ResetWarnOptions C-API function (#138887)
2025-09-15 12:01:33 +03:00
traceback.h
…
tupleobject.h
…
unicodeobject.h
gh-146175: Soft-deprecate outdated macros; convert internal usage (GH-146178)
2026-03-23 12:42:09 +01:00
warnings.h
…
weakrefobject.h
gh-133644: remove PyWeakref_GetObject and PyWeakref_GET_OBJECT (GH-133657)
2025-09-24 11:25:56 +02:00

README.rst 

The Python C API
================

The C API is divided into these sections:

1. ``Include/``: Limited API
2. ``Include/cpython/``: CPython implementation details
3. ``Include/cpython/``, names with the ``PyUnstable_`` prefix: API that can
   change between minor releases
4. ``Include/internal/``, and any name with ``_`` prefix: The internal API

Information on changing the C API is available `in the developer guide`_

.. _in the developer guide: https://devguide.python.org/c-api/
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