[issue45256] Remove the usage of the C stack in Python to Python calls

[Mark Shannon]

Mark Shannon <mark at hotpy.org> added the comment:

PR 28488 has no NEWS entry, or What's New entry.

However, adding multiple entries will be confusing, so that's best left until all calls to Python functions and method don't use the C stack.

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue45256>
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