Python中表达式x += y和x = x+y 的区别详解

前言 本文主要给大家介绍的是关于Python中表达式x += y和x = x+y 区别的相关内容，分享出来供大家参考学习，下面来看看详细的介绍： 直接看下面代码: x +=y In [66]: id(a) Out[66]: 4476839480 In [67]: id(b) Out[67]: 4476839480 In [68]: a = [1, 2, 3] In [69]: b = a In [70]: id(a) Out[70]: 4477149984 In [71]: id(b) Out[71]: 4477149984 In [72]: a += [4, 5, 6] In [73]: