NumPy - numpy.invert() 函数

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  简述

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

  
  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)
  

  它的输出如下 -

  
  Invert of 13 where dtype of ndarray is uint8:
  [242]
  Binary representation of 13:
  00001101
  Binary representation of 242:
  11110010
  

  注意np.binary_repr()函数返回给定宽度的十进制数的二进制表示。