cpython

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cpython	[3.13] gh-152132: Test Py_CompileString() in test_capi.test_run (#153470 ) (#153473 ) (#153533 )	2026-07-10 22:25:22 +00:00
internal	[3.13] gh-152132: Fix Py_RunMain() to return an exit code (#153446 ) (#153455 ) (#153458 )	2026-07-09 22:50:58 +02:00
abstract.h	[3.13] gh-134989: Implement PyObject_DelAttr() as a macro in the limited C API (GH-135021) (#135134 )	2025-06-04 17:10:51 +02:00
bltinmodule.h
boolobject.h	[3.13] gh-134989: Fix Py_RETURN_NONE in the limited C API (GH-135165) (#135182 )	2025-06-05 15:02:09 +00:00
bytearrayobject.h
bytesobject.h
ceval.h	gh-74929: Implement PEP 667 (GH-115153)	2024-05-04 12:12:10 +01:00
codecs.h
compile.h
complexobject.h
critical_section.h	[3.13] gh-119344: Make critical section API public (GH-119353) (#120856 )	2024-06-21 20:20:41 +00:00
datetime.h
descrobject.h
dictobject.h
dynamic_annotations.h	[3.13] gh-150907: Fix dynamic_annotations.h when built with C++ and Valgrind (GH-150914) (#150964 )	2026-06-05 12:29:28 +00:00
enumobject.h
errcode.h
exports.h
fileobject.h
fileutils.h
floatobject.h	[3.13] gh-121905: Consistently use "floating-point" instead of "floating point" (GH-121907) (GH-122012)	2024-07-19 09:13:08 +00:00
frameobject.h
genericaliasobject.h
import.h
intrcheck.h
iterobject.h
listobject.h	gh-114329: Fix PyList_GetItemRef() limited C API definition (#117520 )	2024-04-03 21:02:42 +00:00
lock.h	[3.13] gh-136759: revert rename `lock.h` to `pylock.h` (GH-137041) (#137075 ) (#137166 )	2025-07-28 12:19:32 +00:00
longobject.h
marshal.h
memoryobject.h
methodobject.h
modsupport.h	[3.13] gh-112136: Restore removed _PyArg_Parser (GH-121262) (#121344 )	2024-07-03 18:29:00 +00:00
moduleobject.h	gh-116322: Rename PyModule_ExperimentalSetGIL to PyUnstable_Module_SetGIL (GH-118645)	2024-05-06 18:59:36 +02:00
monitoring.h	gh-111997: C-API for signalling monitoring events (#116413 )	2024-05-04 08:23:50 +00:00
object.h	[3.13] gh-121617: Fix Py_CLEAR() in C++: replace NULL with _Py_NULL (#157067 ) (#157189 )	2026-09-08 15:17:38 +00:00
objimpl.h
opcode.h
opcode_ids.h	GH-118095: Use broader specializations of CALL in tier 1, for better tier 2 support of calls. (GH-118322)	2024-05-04 12:11:11 +01:00
osdefs.h
osmodule.h
patchlevel.h	Post 3.13.18	2026-10-25 20:35:10 +01:00
py_curses.h	[3.13] gh-152502: Detect the curses mouse interface portably (GH-152705) (GH-152735)	2026-07-01 05:30:45 +00:00
pyatomic.h
pybuffer.h
pycapsule.h
pydtrace.d
pydtrace.h
pyerrors.h	[3.13] gh-119521: Rename IncompleteInputError to _IncompleteInputError and remove from public API/ABI (GH-119680, GH-120955) (GH-120944)	2024-06-24 20:23:30 +02:00
pyexpat.h	[3.13] gh-149018: Use `XML_SetHashSalt16Bytes` in `pyexpat`/`_elementtree` when possible (GH-149023)	2026-06-09 14:45:59 +00:00
pyframe.h
pyhash.h
pylifecycle.h	gh-117987: Restore several functions removed in Python 3.13 alpha 1 (GH-117993)	2024-04-18 15:20:38 +02:00
pymacconfig.h
pymacro.h	[3.13] gh-141370: Fix undefined behavior when using Py_ABS() (GH-141548) (#142304 )	2025-12-05 15:52:12 +00:00
pymath.h	[3.13] Revert "gh-136006: fix `Py_NAN` expansion on Solaris systems (GH-136575) (#138734 )" (#139239 )	2025-09-22 14:18:11 +00:00
pymem.h
pyport.h	[3.13] gh-133256: Add _Py_NONSTRING macro (#133257 ) (#135135 )	2025-06-04 17:10:35 +02:00
pystate.h
pystats.h
pystrcmp.h
pystrtod.h
Python.h	[3.13] gh-136823: Update documentation on excluded headers in Python.h (GH-136824) (#137438 )	2025-08-05 22:16:24 +01:00
pythonrun.h
pythread.h	[3.13] gh-87135: Hang non-main threads that attempt to acquire the GIL during finalization (GH-105805) (GH-137827)	2025-08-17 09:08:14 -07:00
pytypedefs.h
rangeobject.h
README.rst
setobject.h
sliceobject.h
structmember.h
structseq.h
sysmodule.h	gh-117987: Restore several functions removed in Python 3.13 alpha 1 (GH-117993)	2024-04-18 15:20:38 +02:00
traceback.h
tupleobject.h
typeslots.h
unicodeobject.h
warnings.h
weakrefobject.h

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/