Description

picnixz

opened on May 8, 2025

Issue body actions

Proposal:

This issue serves as a tracker for removing the following parts of the C API:

• Global configuration variables: #133654
• Process-wide parameters: #133661
• PyImport_ImportModuleNoBlock: #133655
• PyWeakref_GetObject and PyWeakref_GET_OBJECT: #133657
• Functions to configure Python's initialization (PySys_Set* & co)
• Py_UNICODE_WIDE and Py_UNICODE type

Tracked separately:

• vendored copy of libmpdecimal: #115119. (deferred to Python 3.16)
• PyUnicode_As{Encoded,Decoded}{Object,Unicode}: #133610 cc @StanFromIreland
• PySys_ResetWarnOptions Remove deprecated PySys_ResetWarnOptions C-API function #138886 cc @sobolevn

I'll take care of doing the other deprecation removals and update c-api-pending-removal-in-3-15.

Has this already been discussed elsewhere?

This is a minor feature, which does not need previous discussion elsewhere

Links to previous discussion of this feature:

No response

Linked PRs

• gh-133644: remove deprecated global configuration variables #133654
• gh-133644: remove deprecated PyImport_ImportModuleNoBlock #133655
• gh-133644: remove PyWeakref_GetObject and PyWeakref_GET_OBJECT #133657
• gh-133644: remove deprecated Python initialization getter functions #133661
• gh-133644: Avoid deprecated Py_SetProgramName() in _testembed.c #133665
• gh-133644: update Py_InteractiveFlag deprecation notice #133749
• [3.14] gh-133644: update Py_InteractiveFlag deprecation notice (GH-133749) #133751
• [3.13] gh-133644: update Py_InteractiveFlag deprecation notice (GH-133749) #133752
• gh-133644: Remove PySys_SetArgv* for 3.15 #136277
• gh-138886: Remove deprecated PySys_ResetWarnOptions C-API function #138887

Activity

1. picnixz

   self-assigned this

   on May 8, 2025
2. picnixz

   added

   interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

   topic-C-API

   3.15bugs and security fixesbugs and security fixes

   on May 8, 2025
3. skirpichev commented on May 8, 2025

   

   skirpichev

   on May 8, 2025 · Hidden as resolved

   show commentMore actions
4. picnixz

   added a commit that references this issue on May 8, 2025

   gh-133644: remove deprecated `PyImport_ImportModuleNoBlock` (#133655)

   a2c4467
5. vstinner

   added 3 commits that reference this issue on May 8, 2025

   pythongh-133644: Avoid deprecated Py_SetProgramName() in _testembed

   bf71385

   pythongh-133644: Avoid deprecated Py_SetProgramName() in _testembed.c

   4a9dada

   gh-133644: Remove deprecated Python initialization getter functions (#…

   5044e85
6. picnixz

   added a commit that references this issue on May 9, 2025

   gh-133644: update `Py_InteractiveFlag` deprecation notice (#133749)

   3ed8d6f
7. miss-islington

   added 2 commits that reference this issue on May 9, 2025

   pythongh-133644: update `Py_InteractiveFlag` deprecation notice (pyth…

   4eda56d

   pythongh-133644: update `Py_InteractiveFlag` deprecation notice (pyth…

   fb0609b
8. picnixz

   added 2 commits that reference this issue on May 9, 2025

   [3.14] gh-133644: update `Py_InteractiveFlag` deprecation notice (GH-…

   9a77637

   [3.13] gh-133644: update `Py_InteractiveFlag` deprecation notice (GH-…

   a98d46a
9. vstinner

   added a commit that references this issue on May 9, 2025

   gh-133644: Avoid deprecated Py_SetProgramName() in _testembed.c (#133665

   6d9ec4e
10. 1 remaining item

11. StanFromIreland commented on Jul 9, 2025

    

    StanFromIreland

    on Jul 9, 2025

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    I think we can cross out libmpdecimal removal since it has been deferred to 3.16?
12. StanFromIreland commented on Jul 9, 2025

    

    StanFromIreland

    on Jul 9, 2025

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    Py_UNICODE_WIDE and Py_UNICODE type

    Looking at just the top 500 pypi packages (Thanks Victor!), there is still usage in several packages. Do we want to postpone to 3.16?
13. vstinner commented on Jul 11, 2025

    

    vstinner

    on Jul 11, 2025

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    Looking at just the top 500 pypi packages (Thanks Victor!), there is still usage in several packages. Do we want to postpone to 3.16?

    How is it used? How many projects use them?
14. vstinner commented on Jul 11, 2025

    

    vstinner

    on Jul 11, 2025

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    I think we can cross out libmpdecimal removal since it has been deferred to 3.16?

    Right, we should wait for Python 3.16.
15. Pranjal095

    added 4 commits that reference this issue on Jul 12, 2025

    pythongh-133644: remove deprecated `PyImport_ImportModuleNoBlock` (py…

    b218a11

    pythongh-133644: Remove deprecated Python initialization getter funct…

    32b583a

    pythongh-133644: update `Py_InteractiveFlag` deprecation notice (pyth…

    4bf059e

    pythongh-133644: Avoid deprecated Py_SetProgramName() in _testembed.c (…

    0edfd4e
16. taegyunkim

    added 4 commits that reference this issue on Aug 4, 2025

    pythongh-133644: remove deprecated `PyImport_ImportModuleNoBlock` (py…

    25fae29

    pythongh-133644: Remove deprecated Python initialization getter funct…

    c741cf6

    pythongh-133644: update `Py_InteractiveFlag` deprecation notice (pyth…

    2d576c3

    pythongh-133644: Avoid deprecated Py_SetProgramName() in _testembed.c (…

    f4216c2
17. picnixz

    removed their assignment

    on Sep 14, 2025
18. encukou

    added a commit that references this issue on Sep 24, 2025

    gh-133644: remove `PyWeakref_GetObject` and `PyWeakref_GET_OBJECT` (G…

    a5e0562
19. encukou commented on Feb 27, 2026

    

    encukou

    on Feb 27, 2026

    Member

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    For Py_UNICODE_WIDE I propose soft deprecation instead.
    There's been no user warning outside docs, and removing an #ifdef macro can silently change the value.

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