python enumerate

list=[1,2,3]
for  i in  enumerate(list):#把下标和数据包转一起
    print(i)
for index,context in enumerate(list):
    print(index,context)
dict={"lichen":27,"lizhou":28}

输出：
(0, 1)
(1, 2)
(2, 3)
0 1
1 2
2 3