我就写一下我遇到的，更多具体的请看

 

>>> a

array(［0, 1, 2],

       [3, 4, 5],

       [6, 7, 8］)

>>> b = a*2

>>> b

array(［ 0, 2, 4],

       [ 6, 8, 10],

       [12, 14, 16］)

1.水平组合

>>> np.hstack((a,b))

array(［ 0, 1, 2, 0, 2, 4],

       [ 3, 4, 5, 6, 8, 10],

       [ 6, 7, 8, 12, 14, 16］)

>>> np.concatenate((a,b),axis=1)

array(［ 0, 1, 2, 0, 2, 4],

       [ 3, 4, 5, 6, 8, 10],

       [ 6, 7, 8, 12, 14, 16］)

2.垂直组合

>>> np.vstack((a,b))

array(［ 0, 1, 2],

       [ 3, 4, 5],

       [ 6, 7, 8],

       [ 0, 2, 4],

       [ 6, 8, 10],

       [12, 14, 16］)

>>> np.concatenate((a,b),axis=0)

array(［ 0, 1, 2],

       [ 3, 4, 5],

       [ 6, 7, 8],

       [ 0, 2, 4],

       [ 6, 8, 10],

       [12, 14, 16］)