#两个 3 行 3 列的矩阵，实现其对应位置的数据相加，并返回一个新矩阵：

#X = [[12,7,3],

[4 ,5,6],

[7 ,8,9]]

#Y = [[5,8,1],

[6,7,3],

[4,5,9]]

#!/usr/bin/python

-- coding: UTF-8 --

x = [[12,7,3],
[4,5,6],
[7,8,9]]

y = [[5,8,1],
[6,7,3],
[4,5,9]]
z= []
for i in range(3):
z.append([])
for i in range(3):
for j in range(3):
z[i].append(x[i][j]+y[i][j])
print (z)