执行父类方法

class Base1(object):
    def func(self):
        print("Base1.func")

class Base2(object):
    def func(self):
        print("Base2.func")

class Foo(Base1, Base2):
    def func(self):
        # 方式一：根据mro的顺序执行方法
        super().func()           # Base1.func
        super(Foo, self).func()  # Base1.func
        # 方式二：主动执行父类类的方法
        Base2.func(self)         # Base2.func
        print("Foo.func")

obj = Foo()
obj.func()              # Foo.func
super(Foo, obj).func()  # Base1.func  在类外调用父类方法

print(Foo.mro())  # [<class '__main__.Foo'>, <class '__main__.Base1'>, <class '__main__.Base2'>, <class 'object'>]