索引位置

xiangjibang

a = [[1, 2, 7, 6], [2, 3, 8, 7], [3, 4, 9, 8], [4, 5, 10, 9], [6, 7, 12, 11],[7, 8, 13, 12], [8, 9, 14, 13], [9, 10, 15, 14], [11, 12, 17, 16],[12, 13, 18, 17], [13, 14, 19, 18], [14, 15, 20, 19], [16, 17, 22, 21],[17, 18, 23, 22], [18, 19, 24, 23], [19, 20, 25, 24]]
通过程序我知道了每个数字在列表a的索引位置，我现在需要怎么才由索引的位置修改数字。
下面这是每个数字在列表a中的位置。
比如1在a[0][0]，2在a[0][1]等等，a[0][1]=26，将我怎么以这种形式将数字重新定义。也就是怎么使用这些索引位置去修改列表a
1 [(0, 0)]
2 [(0, 1), (1, 0)]
3 [(2, 0), (1, 1)]
4 [(3, 0), (2, 1)]
5 [(3, 1)]
6 [(0, 3), (4, 0)]
7 [(1, 3), (4, 1), (0, 2), (5, 0)]
8 [(1, 2), (5, 1), (2, 3), (6, 0)]
9 [(6, 1), (7, 0), (3, 3), (2, 2)]
10 [(3, 2), (7, 1)]
11 [(8, 0), (4, 3)]
12 [(8, 1), (4, 2), (9, 0), (5, 3)]
13 [(6, 3), (10, 0), (5, 2), (9, 1)]
14 [(11, 0), (7, 3), (6, 2), (10, 1)]
15 [(11, 1), (7, 2)]
16 [(8, 3), (12, 0)]
17 [(9, 3), (12, 1), (8, 2), (13, 0)]
18 [(9, 2), (13, 1), (10, 3), (14, 0)]
19 [(14, 1), (15, 0), (11, 3), (10, 2)]
20 [(11, 2), (15, 1)]
21 [(12, 3)]
22 [(12, 2), (13, 3)]
23 [(14, 3), (13, 2)]
24 [(15, 3), (14, 2)]

25 [(15, 2)
谢谢了。

piepielove

1. a=[(1,2),(3,4)]
   
2. for i in a:
   
3.         (x,y) = i

复制代码

这样你得到了位置x,y，再按照列表索引a[x][y]就可以修改了