exceptions.py 文件源码

def wrap(cls, exception, name=None):
        """This method returns a new subclass of the exception provided that
        also is a subclass of `BadRequest`.
        """
        class newcls(cls, exception):

            def __init__(self, arg=None, *args, **kwargs):
                cls.__init__(self, *args, **kwargs)
                exception.__init__(self, arg)
        newcls.__module__ = sys._getframe(1).f_globals.get('__name__')
        newcls.__name__ = name or cls.__name__ + exception.__name__
        return newcls