'''try……except……finally格式:try: 语句texcept 错误码 as e: 语句1except 错误码 as e: 语句2……except 错误码 as e: 语句nfinally: 语句f作用:语句t无论是否有错误都讲执行最后的语句f'''try: print(1/1)except NameError as e: print("为0了")finally: print("必须执行我")