[docs] [issue17576] PyNumber_Index() is not int-subclass friendly (or operator.index() docos lie)

Eric Snow added the comment: Would it be okay to do a check on __index__ after the PyLong_Check() succeeds? Something like this: if (PyLong_Check(item) && item->ob_type->tp_as_number->nb_index == PyLong_Type.tp_as_number->nb_index) { Py_INCREF(item); return item; } This is something Nick and I were talking about at the sprints regarding fast paths in the abstract API (for mappings and sequences in our case). ---------- nosy: +eric.snow _______________________________________ Python tracker <report@bugs.python.org> <http://bugs.python.org/issue17576> _______________________________________