python基础 -- 继承super

1. 作用

用于子类调用父类的方法

2. 操作

# super

class A(object):
    def __init__(self):
        print('enter A')
        print('exit A')

class B(A):
    def __init__(self):
        print('enter B')
        super(B, self).__init__()
        print('exit B')

class C(A):
    def __init__(self):
        print('enter C')
        super(C, self).__init__()
        print('exit C')

class D(C, B): # 
    def __init__(self):
        print('enter D')
        super(D, self).__init__()
        print('exit D')

if __name__ == '__main__':
    d = D()

# enter D
# enter C
# enter B
# enter A
# exit A
# exit B
# exit C
# enter D