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PEP 699: Follow standard deprecation policy (#2927) 

Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
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Ken Jin 2022-12-22 22:41:33 +08:00 committed by GitHub
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@ -64,10 +64,9 @@ Certain extensions use ``ma_version_tag`` for fast dictionary or globals
lookups. For example, lookups. For example,
`Cython uses the field for fast dynamic module variable lookups <https://github.com/cython/cython/blob/169876872f3cb6198971a1db07e5b8a9d12b3dac/Cython/Utility/ObjectHandling.c#L1556>`_. `Cython uses the field for fast dynamic module variable lookups <https://github.com/cython/cython/blob/169876872f3cb6198971a1db07e5b8a9d12b3dac/Cython/Utility/ObjectHandling.c#L1556>`_.
Since this field is private and makes no guarantees on backwards compatibility, This PEP proposes to emit a compiler warning when accessing ``ma_version_tag``.
this PEP proposes to repeal :pep:`509` immediately within the next CPython After two consecutive version releases with warnings, ``ma_version_tag``
version. A function for fast cached dictionary lookups may be provided as an will be removed, in line with :pep:`387`.
alternative feature to replace directly accessing ``ma_version_tag``.
The biggest user the author could find for this field was Cython. The biggest user the author could find for this field was Cython.
Discussions with a Cython maintainer indicated that Discussions with a Cython maintainer indicated that
@ -96,7 +95,8 @@ Special Thanks
============== ==============
Thanks to C.A.M. Gerlach for edits and wording changes to this document. Thanks to C.A.M. Gerlach for edits and wording changes to this document.
Thanks also to Mark Shannon and Kumar Aditya for providing possible
implementations.
Copyright Copyright
========= =========