numpy reshape用法 #Python

reshape.py

In [1]: import numpy as np

In [2]: arr = np.array([1,2,3,4,5,6])

In [3]: arr = arr.reshape(2,1,3)

In [4]: arr
Out[4]:
array([[[1, 2, 3]],

       [[4, 5, 6]]])


In [5]: brr = np.array([1,2,3,4,5,6,7,8,9,10,11,12])

In [6]: brr = brr.reshape(2,2,3)

In [7]: brr
Out[7]:
array([[[ 1,  2,  3],
        [ 4,  5,  6]],

       [[ 7,  8,  9],
        [10, 11, 12]]])
In [8]: crr = np.array([1,2,3])

In [9]:  crr =crr.reshape(1,1,3)

In [10]: crr
Out[10]: array([[[1, 2, 3]]])