此函数计算输入数组中整数的按位NOT输出，对于有符号整数，将返回二进制补码。

import numpy as np 

print 'Invert of 13 where dtype of ndarray is uint8:' 
print np.invert(np.array([13], dtype=np.uint8)) 
print '\n'  
# Comparing binary representation of 13 and 242, we find the inversion of bits 

print 'Binary representation of 13:' 
print np.binary_repr(13, width=8) 
print '\n'  

print 'Binary representation of 242:' 
print np.binary_repr(242, width=8)

其输出如下-

Invert of 13 where dtype of ndarray is uint8:
[242]

Binary representation of 13:
00001101

Binary representation of 242:
11110010

请注意， np.binary_repr()函数以给定的宽度返回十进制数的二进制表示形式。

参考链接

https://www.learnfk.com/numpy/numpy-invert.html