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Deprecate PyASCIIObject/PyUnicodeObject #131510

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encukou opened this issue Mar 20, 2025 · 1 comment
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Deprecate PyASCIIObject/PyUnicodeObject #131510

encukou opened this issue Mar 20, 2025 · 1 comment
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interpreter-core (Objects, Python, Grammar, and Parser dirs) topic-C-API topic-unicode type-feature A feature request or enhancement

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@encukou
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encukou commented Mar 20, 2025 •
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Feature or enhancement

Deprecate, and plan removal of, direct access to string internals:

  • `PyASCIIObject, PyCompactUnicodeObject, PyUnicodeObject structs
  • the PyUnicode_IS_COMPACT macro

This will allow reorganizing the structs for optimizations or new features.

One possible new feature is better support for subclasses that need additional C state. The NumPy and PyObjC projects currently do this. Both can adapt to CPython changes relatively quickly, so we can provide unstable API for their use case.

See discussion.

C API WG vote pending.

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@encukou encukou added topic-C-API type-feature A feature request or enhancement labels Mar 20, 2025
@bedevere-app bedevere-app bot mentioned this issue Mar 20, 2025
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@picnixz picnixz added interpreter-core (Objects, Python, Grammar, and Parser dirs) topic-unicode labels Mar 22, 2025
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encukou commented Apr 28, 2025

The discussion identified a use case to address first. I'll close this for now.

@encukou encukou closed this as not planned Won't fix, can't repro, duplicate, stale Apr 28, 2025
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