Python基础课：多继承

class Base:
    def play(self):
        print('这是Base')
 
class A(Base):
    def play(self):
        print('这是A')   
 
class B(Base):
    def play(self):
        print('这是B')
 
class C(A,B):
    def play(self):
        super().play() #super(C,self).play()  两个写法，作用一样
        #D.play()        
        print('这是C')
 
c = C()