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GH-104668: Don't call PyOS_* hooks in subinterpreters #104674

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Merged
merged 6 commits into from
May 22, 2023
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GH-104668: Don't call PyOS_* hooks in subinterpreters #104674

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262ed9f
Only call PyOS_* hooks from the main interpreter
brandtbucher May 19, 2023
83d92ae
Document the change
brandtbucher May 19, 2023
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blurb add
brandtbucher May 19, 2023
9800546
Add issue numbers
brandtbucher May 19, 2023
0157842
Catch up with main
brandtbucher May 22, 2023
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What's New
brandtbucher May 22, 2023
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@brandtbucher
brandtbucher committed May 22, 2023
commit b42f86a3a9539d86918b8777ad8a7a6dd02c7dc3
9 changes: 9 additions & 0 deletions Doc/whatsnew/3.12.rst
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Expand Up @@ -1476,6 +1476,15 @@ Porting to Python 3.12
Note that :c:func:`PyType_FromMetaclass` (added in Python 3.12)
already disallows creating classes whose metaclass overrides ``tp_new``.

* :c:var:`PyOS_InputHook` and :c:var:`PyOS_ReadlineFunctionPointer` are no
longer called in :ref:`subinterpreters <sub-interpreter-support>`. This is
because clients generally rely on process-wide global state (since these
callbacks have no way of recovering extension module state).

This also avoids situations where extensions may find themselves running in a
subinterpreter that they don't support (or haven't yet been loaded in). See
:gh:`104668` for more info.

Deprecated
----------

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