https://www.cnblogs.com/aylin/p/5572104.html

一、面向对象多继承(c3算法)

a、有多个父类先找左,再找右,如下示例:

class A(object):
        pass

class B(object):
     def f1(self):
        print('B')

class C(A,B):
       pass

obj = C()
obj.f1()
    print(C.__mro__)  # 打印出C类的继承顺序,结果如下一行:
    # (<class '__main__.C'>, <class '__main__.A'>, <class '__main__.B'>, <class 'object'>)

先找左,再找右
先找左再找右

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