numpy.unpackbits

 1 import numpy as np
 2 
 3 a = np.array([[2],[7],[23]],dtype=np.uint8)
 4 b = np.unpackbits(a,axis=1)    #可以理解为a是二维的，axis=1表示将第二维的每个数进行转换，输出的也是二维的，每个数是一行
 5 print("a",a)
 6 print("b",b)
 7 
 8 
 9 a [[ 2]
10  [ 7]
11  [23]]
12 b [[0 0 0 0 0 0 1 0]
13  [0 0 0 0 0 1 1 1]
14  [0 0 0 1 0 1 1 1]]

import numpy as np

a = np.array([[2],dtype=np.uint8)
b = np.unpackbits(a,axis=1)    #可以理解为a是二维的，axis=0表示将这三个数转化完之后的二进制数全都写在一维里面
print("a",a)
print("b",b)

a [[ 2]
 [ 7]
 [23]]
b [[0]
 [0]
 [0]
 [0]
 [0]
 [0]
 [1]
 [0]
 [0]
 [0]
 [0]
 [0]
 [0]
 [1]
 [1]
 [1]
 [0]
 [0]
 [0]
 [1]
 [0]
 [1]
 [1]
 [1]]