捕获自定义异常

此示例显示如何捕获自定义 Exception

class CustomError(Exception):
     pass

try:
    raise CustomError('Can you catch me ?')
except CustomError as e:
    print ('Catched CustomError :{}'.format(e))
except Exception as e:
    print ('Generic exception: {}'.format(e))

输出：

Catched CustomError :Can you catch me ?