[issue37483] Add PyObject_CallOneArg()

[Jeroen Demeyer]

Jeroen Demeyer <J.Demeyer at UGent.be> added the comment:

Test of stack usage:

from _testcapi import stack_pointer
class D(dict):
    def __missing__(self, key):
        sp = stack_pointer()
        print(f"stack usage = {TOP - sp}")
        return None
d = D()
TOP = stack_pointer()
d[0]


**before**: stack usage = 1296
**after**: stack usage = 976

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37483>
_______________________________________