Python数组组合的一个问题，求高手解答

Question

training_sets = [
[1,2,3,4,5,6,7,8,9,0],
[1,2,3,4,5,6,7,8,9,0],
[1,2,3,4,5,6,7,8,9,0],
[1,2,3,4,5,6,7,8,9,0],
[1,2,3,4,5,6,7,8,9,0]
]
我该如何写代码，能够将以上的二维数组，变成以下三维数组
training_sets = [
[[1,2,3,4,5,6,7],[8,9,0]],
[[1,2,3,4,5,6,7],[8,9,0]],
[[1,2,3,4,5,6,7],[8,9,0]],
[[1,2,3,4,5,6,7],[8,9,0]],
[[1,2,3,4,5,6,7],[8,9,0]],
]

Answer 1

import numpy as np

training_sets = np.array( [
    [1,2,3,4,5,6,7,8,9,0],
    [1,2,3,4,5,6,7,8,9,0],
    [1,2,3,4,5,6,7,8,9,0],
    [1,2,3,4,5,6,7,8,9,0],
    [1,2,3,4,5,6,7,8,9,0]
    ])

    training_sets[0:5,0:7]

    training_sets[0:5,7:10]