语法:
1)try: except: ...
2)try: except: ... else:
3)try: finally:
4)用户自定义异常
class classname(RuntimeError):
5)raise自动触发异常
语法:
1)try: except: ...
2)try: except: ... else:
3)try: finally:
4)用户自定义异常
class classname(RuntimeError):
5)raise自动触发异常