python - 调用父级的父级方法，该方法已被父级覆盖

Question

如果一个方法被另一个类覆盖，你如何在继承链上调用一个方法而不是一个类？

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

如果您总是想要Grandfather#do_thing，无论是否Grandfather是Father的直接超类，那么您都可以Grandfather#do_thing在Son self对象上显式调用：

class Son(Father):
    # ... snip ...
    def do_thing(self):
        Grandfather.do_thing(self)

另一方面，如果您想调用的超类的do_thing方法Father，无论是否Grandfather应该使用super（如蒂埃里的回答）：

class Son(Father):
    # ... snip ...
    def do_thing(self):
        super(Father, self).do_thing()

Answer 2

您可以使用以下方法执行此操作：

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

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