alias.py 文件源码

def __getattr__(self, name):

        # if we are proxy to a ComponentData
        # object, we need to make sure NOT to
        # invoke its deepcopy method
        if name == "__deepcopy__":
            raise AttributeError

        if name in Alias.__slots__:
            # should never happen
            assert False

        if name in Alias._component_slots:
            return super(Alias, self).__dict__[name].__get__(self)

        if self.aliased_object is None:
            raise weakref.ReferenceError("Proxy is no longer valid")
        return getattr(self.aliased_object, name)

    #
    # __setattr__ and __delattr__ will always be invoked
    #