In [19]: a,b = 8,10
In [20]: a,b = b,a
In [21]: a
Out[21]: 10
In [22]: b
Out[22]: 8方法2：
In [23]: a,b = 8,10
In [24]: a
Out[24]: 8
In [25]: b
Out[25]: 10
In [26]: a = a + b
In [27]: b = a - b
In [28]: a = a - b
In [29]: a
Out[29]: 10
In [30]: b
Out[30]: 8原文：http://blog.51cto.com/54dev/2061656