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1. Commits on May 5, 2026

   • gh-149044: Implement PEP 820 – PySlot: Unified slot system for the C API (GH-149055)

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     encukou

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     ZeroIntensity

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2. Commits on Apr 30, 2026

   • gh-148829: Move sentinelobject.h to Include/cpython/ (#149186)

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3. Commits on Apr 28, 2026

   • gh-148829: Implement PEP 661 (#148831)

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4. Commits on Apr 23, 2026

   • gh-146636: Improve ABI/feature selection, add new header for it (GH-148302)

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     encukou

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5. Commits on Apr 1, 2026

   • gh-146636: PEP 803: add Py_TARGET_ABI3T and .abi3t.so extension (GH-146637)

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     encukou

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     ngoldbaum

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6. Commits on Feb 12, 2026

   • gh-121617: Include <string.h> for Py_CLEAR() macro (#144666)

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7. Commits on Oct 7, 2025

   • gh-79315: Remove Include/pylock.h and Include/monitoring.h (#139731)

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8. Commits on Aug 26, 2025

   • gh-138143: Allow anonymous unions in public headers, using `_Py_ANONYMOUS` (GH-137283)

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     encukou

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9. Commits on Aug 5, 2025

   • gh-136823: Update documentation on excluded headers in Python.h (#136824)

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     SZeltaat

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     AA-Turner

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10. Commits on Jul 24, 2025

    • gh-136759: rename `lock.h` to `pylock.h` (#137041)

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      aisk

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11. Commits on Jul 12, 2025

    • gh-111506: Add _Py_OPAQUE_PYOBJECT to hide PyObject layout & related API (GH-136505)

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      encukou

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12. Commits on Jun 11, 2025

    • gh-127545: Add _Py_ALIGNED_DEF(N, T) and use it for PyObject (GH-135209)

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13. Commits on May 19, 2025

    • gh-133779: Revert Windows generation of pyconfig.h and go back to a static header. (GH-133966)

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      zooba

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14. Commits on Dec 3, 2024

    • gh-127271: Replace use of PyCell_GET/SET (gh-127272)

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15. Commits on Oct 18, 2024

    • gh-125604: Move _Py_AuditHookEntry, etc. Out of pycore_runtime.h (gh-125605)

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16. Commits on Sep 27, 2024

    • gh-124609: Fix _Py_ThreadId for Windows builds using MinGW (#124663)

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17. Commits on Jun 26, 2024

    • gh-120642: Move private PyCode APIs to the internal C API (#120643)

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18. Commits on Jun 21, 2024

    • gh-119344: Make critical section API public (#119353)

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19. Commits on Jun 20, 2024

    • gh-117511: Make PyMutex public in the non-limited API (#117731)

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20. Commits on Jun 11, 2024

    • gh-120326: Include <intrin.h> on Windows with Free Threading (#120329)

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21. Commits on May 31, 2024

    • gh-119853: Add Include/refcount.h file (#119854)

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22. Commits on May 4, 2024

    • gh-111997: C-API for signalling monitoring events (#116413)

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23. Commits on Apr 11, 2024

    • gh-111506: Error if the limited API is used in free-threaded build (#117762)

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24. Commits on Mar 20, 2024

    • gh-117021: Fix integer overflow in PyLong_AsPid() on non-Windows 64-bit platforms (GH-117064)

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25. Commits on Feb 12, 2024

    • gh-110850: Add PyTime_t C API (GH-115215)

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      encukou

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26. Commits on Nov 15, 2023

    • gh-112026: Add again <unistd.h> include in Python.h (#112046)

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27. Commits on Oct 31, 2023

    • gh-108765: Python.h no longer includes <stddef.h> on Windows (#111563)

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28. Commits on Sep 19, 2023

    • gh-108724: Add PyMutex and _PyParkingLot APIs (gh-109344)

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      colesbury

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29. Commits on Sep 3, 2023

    • gh-108765: Python.h no longer includes <ctype.h> (#108831)

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30. Commits on Sep 2, 2023

    • gh-108765: Python.h no longer includes <unistd.h> (#108783)

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    • gh-108765: Python.h no longer includes <ieeefp.h> (#108781)

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31. Commits on Sep 1, 2023

    • gh-108765: Move standard includes to Python.h (#108769)

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32. Commits on Jul 2, 2023

    • gh-106320: Remove private _PyTraceMalloc C API functions (#106324)

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33. Commits on Jul 1, 2023

    • gh-106316: Remove pytime.h header file (#106317)

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34. Commits on Jun 2, 2023

    • GH-104584: Plugin optimizer API (GH-105100)

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