在Python的类里面，所有属性和方法默认都是公共的；但Python也可以设置受保护、私有类型的变量or方法
受保护类型的变量、方法
一般称为：protected变量
#!/usr/bin/env python # -*- coding: utf-8 -*- class protected: _protected = "受保护变量" name = "test" def test(self): print("实例属性：", self._protected) print("类属性：", protected._protected) @classmethod def class_m(cls): print("类方法中类属性：", cls._protected) def _test(self): print("受保护的方法") class protectedson(protected): def __init__(self): self._protected = "子类的受保护实例变量" print("子类实例属性：", self._protected) print("子类类属性：", protectedson._protected) if __name__ == "__main__": p1 = protectedson() p1.test() print("子类实例对象调用类属性", p1._protected) protectedson.class_m() print("类对象调用类属性", protectedson._protected) p1._test()