枚举遍历 

 1 # 枚举遍历:能够同时将下标及对应的元素遍历出来
 2 # 第一个参数为下标,第二个参数为元素
 3 #string
 4 for i in enumerate("abc"):
 5 print(i)
 6 for index, ele in enumerate("abc"):
 7 print(ele)
 8 # list
 9 for index, ele in enumerate([1,2,3]):
10 print(ele, index)
11 # tuple
12 for index, ele in enumerate((100,200,300)):
13 print(ele, index)
14 # dict : index:下标 ele:key
15 for index, ele in enumerate({"a":100, "b":200}):
16 print(ele)
17 
18 # set
19 for index, ele in enumerate(set((1,2,3,4))):
20 print(index, ele)

 

posted @ 2019-07-26 20:07  巨菜的小鸟  阅读(767)  评论(0)  编辑  收藏  举报