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