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Implement PEP 803 -- abi3t #146636

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Implement PEP 803 -- abi3t#146636
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encukou
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3.15bugs and security fixesinterpreter-core(Objects, Python, Grammar, and Parser dirs)topic-C-APItype-featureA feature request or enhancement

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@encukou
encukou
opened on Mar 30, 2026

PEP-803 is accepted; this tracks the implementation.

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  1. encukou
    self-assigned this
    on Mar 30, 2026
  2. StanFromIreland
    added
    type-featureA feature request or enhancement
    interpreter-core(Objects, Python, Grammar, and Parser dirs)
    3.15bugs and security fixes
    on Mar 30, 2026

  3. neutrinoceros commented on Mar 30, 2026

    @neutrinoceros
    neutrinoceros
    on Mar 30, 2026
    Contributor

    @encukou congratz ! Although I think there's a typo in the title and description; you mean PEP 803, right ?

  4. kumaraditya303
    changed the title [-]Implement PEP 809 -- abi3t[/-] [+]Implement PEP 803 -- abi3t[/+] on Mar 30, 2026
  5. encukou
    added 6 commits that reference this issue on Apr 1, 2026

    gh-146636: PEP 803: add Py_TARGET_ABI3T and .abi3t.so extension (GH-1…

    2452324

    gh-146636: Py_mod_abi mandatory for modules created from slots array (G…

    a86963b

    pythongh-146636: abi3t: Define Py_GIL_DISABLED but make sure not to u…

    0fc14ba

    pythongh-146636: abi3t: Define Py_GIL_DISABLED but make sure not to u…

    cb3c6fe

    gh-146636: abi3t: Define Py_GIL_DISABLED but do not use it (GH-148142)

    fbc1a5b

    pythongh-146636: abi3t: Test that Python.h avoids checking Py_GIL_DIS…

    1116e1e

  6. clin1234 commented on Apr 12, 2026

    @clin1234
    clin1234
    on Apr 12, 2026
    Contributor

    For Migration Docs, it would be suitable to document adapting to this PEP as a separate HOWTO, is it not?

  7. encukou commented on Apr 13, 2026

    @encukou
    encukou
    on Apr 13, 2026
    MemberAuthor

    Yes. I'll to do it when the situation around PyCriticalSection is clearer.

  8. encukou
    added a commit that references this issue on Apr 16, 2026

    gh-146636: PEP 803: Reference documentation (GH-148013)

    0fcf2b7

  9. 18 remaining items

  10. ljfp
    added 5 commits that reference this issue on Apr 25, 2026

    pythongh-146636: PEP 803: add Py_TARGET_ABI3T and .abi3t.so extension (…

    6d8e384

    pythongh-146636: Py_mod_abi mandatory for modules created from slots …

    087e218

    pythongh-146636: abi3t: Define Py_GIL_DISABLED but do not use it (pyt…

    3717be2

    pythongh-146636: PEP 803: Reference documentation (pythonGH-148013)

    cedb210

    pythongh-146636: Improve ABI/feature selection, add new header for it (…

    8abf101
  11. gaborbernat
    added 2 commits that reference this issue on May 4, 2026

    👷 ci(build): ship cp315t wheels

    2cfaefe

    ✨ feat(build): support free-threaded Python wheels (#307)

    af025bf

  12. ngoldbaum commented on Jun 1, 2026

    @ngoldbaum
    ngoldbaum
    on Jun 1, 2026 · Hidden as resolved
  13. encukou
    added a commit that references this issue on Jun 3, 2026

    gh-146636: Add Free-threaded Stable ABI migration guide (GH-150580)

    c720e18
  14. hugovk
    added a commit that references this issue on Jun 3, 2026

    [3.15] gh-146636: Add Free-threaded Stable ABI migration guide (GH-15…

    24f5d3d
  15. philthompson10
    added a commit that references this issue on Jun 17, 2026

    pythongh-146636: Add Free-threaded Stable ABI migration guide (python…

    7c4b466
  16. serhiy-storchaka
    added
    topic-C-API
    on Jul 3, 2026
  17. encukou
    closed this as completedon Jul 30, 2026

  18. vstinner commented on Aug 5, 2026

    @vstinner
    vstinner
    on Aug 5, 2026
    Member

    encukou closed this as completed1w ago

    Congrats! That's a great achievement for Python 3.15 and Free Threading!

  19. encukou commented on Aug 6, 2026

    @encukou
    encukou
    on Aug 6, 2026
    MemberAuthor

    Race conditions for everyone! 🏁

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