def create_full_name(**kw_args): if 'full_name' in kw_args: full_name = kw_args['full_name'] return full_name if 'first_name' in kw_args and 'last_name' in kw_args: first_name = kw_args['first_name'] last_name = kw_args['last_name'] full_name = first_name + last_name return full_name print(create_full_name(full_name = 'ZhangSan')) print(create_full_name(first_name = 'Li', last_name = 'Si'))