Question

如果在继承链中被另一个类覆盖，那么如何在继承链上调用多个类的方法？

class Grandfather(object):
    def __init__(self):
        pass

    def do_thing(self):
        # stuff

class Father(Grandfather):
    def __init__(self):
        super(Father, self).__init__()

    def do_thing(self):
        # stuff different than Grandfather stuff

class Son(Father):
    def __init__(self):
        super(Son, self).__init__()

    def do_thing(self):
        # how to be like Grandfather?

Answer 1

如果您始终需要Grandfather#do_thing，无论Grandfather是否为Father的直接超类，您都可以Grandfather#do_thing {{{{}} {{}} {{}} 1}}对象：

Son

另一方面，如果要调用self超类的class Son(Father): # ... snip ... def do_thing(self): Grandfather.do_thing(self)方法，无论是do_thing，都应使用Father（如在蒂埃里的回答中）：

Grandfather

Answer 2

您可以使用以下方式执行此操作：

class Son(Father):
    def __init__(self):
        super(Son, self).__init__()

    def do_thing(self):
        super(Father, self).do_thing()

调用父级的父方法，该方法已由父级重写

2 个答案: