Petr Viktorin <encu...@gmail.com> added the comment:

These should be removed from the *limited API*, but stay for the stable ABI.
(PEP 652 mentions this can happen but doesn't give details, which will be a bit 
tricky. These are good candidates for figuring out the process.)

I assigned this to myself; I'll try to get to it for 3.11.


> What is the benefit of removing this? Is copy pasting the compatibility layer 
> to (possibly many) different projects worth the "cleanup"?

Yes. PyObject_AsReadBuffer is dangerous *in general*, but in certain specific 
cases where you're relying on CPython implementations details it can work. For 
example, borrowing a buffer from a *string* or *array* will work on CPython, 
and I don't see that changing any time soon. So, using PyObject_AsReadBuffer is 
still tech debt, but for some projects that's OK.

All this should be documented in the release notes, though, so the projects 
know what they're doing. (And the release notes should be written *with the 
change*, not later, so projects testing early can read them.)

----------
assignee:  -> petr.viktorin
nosy: +petr.viktorin
status: closed -> open

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<https://bugs.python.org/issue41103>
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