python 实现多维数组转向量

>from compiler.ast import flatten

>X

matrix([[  1,  17,  13, 221, 289, 169],

[  1,  17,  14, 238, 289, 196],

[  1,  17,  15, 255, 289, 225],

[  1,  18,  13, 234, 324, 169],

[  1,  18,  14, 252, 324, 196],

[  1,  18,  15, 270, 324, 225],

[  1,  19,  13, 247, 361, 169],

[  1,  19,  14, 266, 361, 196],

[  1,  19,  15, 285, 361, 225]])

>x = X.tolist()

>x

[[  1,  17,  13, 221, 289, 169],

[  1,  17,  14, 238, 289, 196],

[  1,  17,  15, 255, 289, 225],

[  1,  18,  13, 234, 324, 169],

[  1,  18,  14, 252, 324, 196],

[  1,  18,  15, 270, 324, 225],

[  1,  19,  13, 247, 361, 169],

[  1,  19,  14, 266, 361, 196],

[  1,  19,  15, 285, 361, 225]]

>xx = flatten(x)                      (或者x.ravel()    )

>xx

[1,

17,

13,

221,

289,

169,

1,

17,

14,

238,

289,

196,

1,

17,

15,

255,

289,

225,

1,

18,

13,

234,

324,

169,

1,

18,

14,

252,

324,

196,

1,

18,

15,

270,

324,

225,

1,

19,

13,

247,

361,

169,

1,

19,

14,

266,

361,

196,

1,

19,

15,

285,

361,

225]