使用 zip 代码> 和 * 运算符:

Use zip with * operator:

>>> a1 = [[1,4,3,5,6],[6,7,5,3,12],[1,6,4,1,2],[1,9,4,2,1]]
>>> a2 = [[4,3,5,6],[6,7,5,12],[1,6,4,2],[1,9,2,1],[3,2,5,11]]

>>> zip(*a1)
[(1, 6, 1, 1), (4, 7, 6, 9), (3, 5, 4, 4), (5, 3, 1, 2), (6, 12, 2, 1)]
>>> zip(*a2)
[(4, 6, 1, 1, 3), (3, 7, 6, 9, 2), (5, 5, 4, 2, 5), (6, 12, 2, 1, 11)]

>>> map(sum, zip(*a1)) # [1+6+1+1, 4+7+6+9, ...]
[9, 26, 16, 11, 21]