Serhiy Storchaka <storchaka+cpyt...@gmail.com> added the comment: 1. This will increase the size of type object. Most types are not numbers, not collections and don't support the buffer protocol, thus save memory for tp_as_number, tp_as_sequence, tp_as_mapping and tp_as_buffer. This also can increase the time of type creation.
2. This will make harder testing that the particular protocol is supported (e.g. see PyIndex_Check or PyObject_CheckBuffer). And this will break any third-party code that does this directly, without using C API. 3. Calling function instead of executing inlined code after checking can increase stack consumption and slow down execution (see the usage of tp_descr_get). ---------- nosy: +serhiy.storchaka _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue31791> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
