code: def bbox_flip(bbox, d, rows, cols):
      
      if d == 0:
          bbox = bbox_vflip(bbox, rows, cols)
      elif d == 1:
          bbox = bbox_hflip(bbox, rows, cols)
      elif d == -1:
          bbox = bbox_hflip(bbox, rows, cols)
          bbox = bbox_vflip(bbox, rows, cols)
      else:
          raise ValueError('Invalid d value {}. Valid values are -1, 0 and 1'.format(d))
      return bbox
docs: Flip a bounding box either vertically, horizontally or both depending on the value of `d`.
  
      Raises:
          ValueError: if value of `d` is not -1, 0 or 1.