覆盖python3中的属性

Question

In below code in test() method self.name is None. I'm expecting it as 'B- Stack'. Am I missing something?

class A:
    def __init__(self):
        self.__name = None

    @property
    def name(self):
        return self.__name

    @name.setter
    def name(self, value):
        self.__name = "A- " + value


class B(A):
    @A.name.setter
    def name(self, value):
        self.__name = "B- " + value

    def test(self):
        print(self.name) # It should print B- Stack


b = B()
b.name = "Stack"
b.test()

Answer 1

you are printing self.name which is setter method not actual self.__name .

Either you can add getter method or print(self.__name) in test method:

you can add getter method in B()

@name.getter
def name(self):
    return self.__name