def _rec_get_names(args, names=None):
if names is None:<EOL><INDENT>names = []<EOL><DEDENT>for arg in args:<EOL><INDENT>if isinstance(arg, node_classes.Tuple):<EOL><INDENT>_rec_get_names(arg.elts, names)<EOL><DEDENT>else:<EOL><INDENT>names.append(arg.name)<EOL><DEDENT><DEDENT>return names<EOL>
return a list of all argument names