[issue37547] Add _PyObject_CallMethodOneArg()

[Jeroen Demeyer]

New submission from Jeroen Demeyer <J.Demeyer at UGent.be>:

We already have

_PyObject_CallNoArg()
_PyObject_CallOneArg()
_PyObject_CallMethodNoArgs()

so it makes sense to also add

_PyObject_CallMethodOneArg()

----------
components: Interpreter Core
messages: 347619
nosy: inada.naoki, jdemeyer, vstinner
priority: normal
severity: normal
status: open
title: Add _PyObject_CallMethodOneArg()
type: performance
versions: Python 3.9

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37547>
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