code: def invert_pixel_mask(mask):
      '''Invert pixel mask (0->1, 1(and greater)->0).
  
      Parameters
      ----------
      mask : array-like
          Mask.
  
      Returns
      -------
      inverted_mask : array-like
          Inverted Mask.
      '''
      inverted_mask = np.ones(shape=(80, 336), dtype=np.dtype('>u1'))
      inverted_mask[mask >= 1] = 0
      return inverted_masf invert_pixel_mask(mask):
      '''Invert pixel mask (0->1, 1(and greater)->0).
  
      Parameters
      ----------
      mask : array-like
          Mask.
  
      Returns
      -------
      inverted_mask : array-like
          Inverted Mask.
      '''
      inverted_mask = np.ones(shape=(80, 336), dtype=np.dtype('>u1'))
      inverted_mask[mask >= 1] = 0
      return inverted_mask
docs: Invert pixel mask (0->1, 1(and greater)->0).
  
      Parameters
      ----------
      mask : array-like
          Mask.
  
      Returns
      -------
      inverted_mask : array-like
          Inverted Mask.