if (!PyArg_ParseTuple(            args,"OOpO!OOiiiiiiiiii" _Py_PARSE_PID"OOOiOp:fork_exec",            &process_args, &executable_list,            &close_fds, &PyTuple_Type, &py_fds_to_keep,            &cwd_obj, &env_list,            &p2cread, &p2cwrite, &c2pread, &c2pwrite,            &errread, &errwrite, &errpipe_read, &errpipe_write,            &restore_signals, &call_setsid, &pgid_to_set,            &gid_object, &groups_list, &uid_object, &child_umask,            &preexec_fn, &allow_vfork))returnNULL;