访问Python中类的隐藏属性

Question

演示了如何隐藏类的属性和方法来访问类外的隐藏变量

class hiding():
    # class attribute, "__" befor an attribute will make it to hide
    __hideAttr = 10
    def func(self):
        self.__hideAttr += 1 
        print(self.__hideAttr)

a = hiding()
a.func()
a.func()


#AttributeError: 'hiding' object has no attribute '__hideAttr'
print (a.__hideAttr)

Answer 1

访问隐藏属性会导致错误，注释掉以下行以消除错误：

print (a.__hideAttr)

要访问类的隐藏属性，请使用：

print (a._hiding__hideAttr)