Python3enumrate和range对比及示例详解

# 产生0-9的序列
for i in range(0, 10):
 print(i)
print('-' * 40)
# 产生0-20，步进(间隔)为3的数字元素组成的序列 
for j in range(0, 21, 3):
 print(j)

0
1
2
3
4
5
6
7
8
9
----------------------------------------
0
3
6
9
12
15
18

L = [1,2,3,4,5]
for i in range(len(L)):
 L[i] = L[i] ** 2
 print(L[i])

1
4
9
16
25

L = [1,2,3,4,5]
for i, value in enumerate(L):
 print(i, '-->',value)
0 --> 1
1 --> 2
2 --> 3
3 --> 4
4 --> 5