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提醒一下，注意这里貌似有坑

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Neko章鱼

#1 Created at ... [Delete] [Delete and Lock User] 
class A(object):
    def __init__(self):
        self.__alist = [1,2,3,4,5]
    #看这里，我只写了@property
    @property
    def alist(self):
        return self.__alist

a = A()
a.alist[0] = 99999
#这里alist就变成了[99999,2,3,4,5]
a.alist

廖雪峰

#2 Created at ... [Delete] [Delete and Lock User]

不要轻易怀疑python，要总是质疑自己的代码

杨楚秋萌萌哒

#3 Created at ... [Delete] [Delete and Lock User] 
a.alist = [1,2,3]

AttributeError: can't set attribute

我想是因为list存的是地址吧 不能将新的list赋给alist，但是可以改变原来list里的元素

Dream_Zurich

#4 Created at ... [Delete] [Delete and Lock User]

alist是read only对象，而且 __alist 是私有变量了 但是[1，2，3，4，5]是一个list，它是可以被修改的。 不能修改的是alist,并不是alist对象所指的list

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