I'm not familiar with the Python runtime, but PyArg_Parse sounds very much like a PHP C API function (zend_parse_parameters) which has the same purpose and prob

I'm not familiar with the Python runtime, but PyArg_Parse sounds very much like a PHP C API function (zend_parse_parameters) which has the same purpose and problems. Several years ago, an alternative API was added where you did one function call (actually macro) per argument. It has worse code size but better performance. Maybe Python can do the same?