[issue42294] [C API] Add new C functions with more regular reference counting like PyTuple_GetItemRef()

[STINNER Victor]

Change by STINNER Victor <vstinner at python.org>:


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pull_requests: +22107
pull_request: https://github.com/python/cpython/pull/23209

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42294>
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