exc_info 41 source4/web_server/wsgi.c PyObject *response_header, *exc_info = NULL; exc_info 51 source4/web_server/wsgi.c if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sO|O:start_response", discard_const_p(char *, kwnames), &status, &response_header, &exc_info)) {