Day29.非菱形继承下属性的查找顺序

1.非菱形继承下属性的查找顺序_python3下.mro()的查找顺序

'''
如果多继承是非菱形继承，python2和python3的属性查找顺序一样：
    都是一个分支一个分支的找下去，然后最后找object
'''

class E:
    # def test(self):
    #     print('from E')
    pass

class F:
    def test(self):
        print('from F')

class B(E):
    # def test(self):
    #     print('from B')
    pass

class C(F):
    # def test(self):
    #     print('from C')
    pass

class D:
    def test(self):
        print('from D')
    
class A(B, C, D):
    # def test(self):
    #     print('from A')
    pass

print('.mro()查看函数顺序'.center(40, '-'))
print(A.mro())  # 顺序： A->B->E->C->F->D->object

obj = A()
obj.test()