[issue40302] Add _Py_bswap32() function to pyport.h

[STINNER Victor]

STINNER Victor <vstinner at python.org> added the comment:

We have another function which may be grouped somehow in the same category: _Py_bit_length().

----------

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40302>
_______________________________________