## 拆包、交换变量的值 ### 1\. 对返回的数据直接拆包 ~~~ def get_my_info(): high = 178 weight = 100 age = 18 return high, weight, age # result = get_my_info() # print(result) my_high, my_weight, my_age = get_my_info() print(my_high) print(my_weight) print(my_age) ~~~ #### 总结： * 拆包时要注意，需要拆的数据的个数要与变量的个数相同，否则程序会异常 * 除了对元组拆包之外，还可以对列表、字典等拆包 ~~~ In [17]: a, b = (11, 22) In [18]: a Out[18]: 11 In [19]: b Out[19]: 22 In [20]: a, b = [11, 22] In [21]: a Out[21]: 11 In [22]: b Out[22]: 22 In [23]: a, b = {"m":11, "n":22} # 取出来的是key，而不是键值对 In [24]: a Out[24]: 'm' In [25]: b Out[25]: 'n' ~~~ ### 2\. 交换2个变量的值 ~~~ # 第3种方式 a = 4 b = 5 a, b = b, a print(a) print(b) ~~~