list_3 = [] list_1 = ['2', '5', '6', '11', '2', '535', '2', '2' ] print(list_1) s = '2' for item in enumerate(list_1): if item[1] == str(s): list_3.append(item[0]) print(list_3)
运行结果:
['2', '5', '6', '11', '2', '535', '2', '2']
[0, 4, 6, 7]
枚举:
for i in enumerate(('a','b','c')): print (i)
(0, 'a')
(1, 'b')
(2, 'c')
for i,j in enumerate(('a','b','c')): print (i,j)
运行结果:
0 a
1 b
2 c