Python OOO 设计多类

Question

我有一个父类和一个子类，并试图实例化子类以继承父类的属性。

这段代码工作得很好，但想知道是否有办法让 self.list1 保持私有(private)，即；如果我声明 self.__list1 则子类无法访问它。

我能否覆盖子类方法以将 self.__list1 保持为私有(private)？

class parent(object):
    def __init__(self,x,y):
        self.x = x
        self.y = y
        self.list1 = ['a','b','c']
        print('self.x',self.x)
        print('self.y',self.y)

class child(parent):
    def test(self):
        print('In child self.x',self.x)
        print('In child self.list1',self.list1)

class test(object):
    def __init__(self,x1,y1):
        self.x1 = x1
        self.y1 = y1

    def process(self):
        childobj = child(self.x1,self.y1)
        childobj.test()

        pass


def main():            
    testx = test(2,3)
    testx.process()

Answer 1

来自docs :

Private” instance variables that cannot be accessed except from inside an object don’t exist in Python. However, there is a convention that is followed by most Python code: a name prefixed with an underscore (e.g. _spam) should be treated as a non-public part of the API (whether it is a function, a method or a data member). It should be considered an implementation detail and subject to change without notice.

带有两个下划线的前缀调用 name mangling , 是否尊重这些变量/方法的“隐私性”取决于您的客户