code: def linetoraster(m):
      
  
      # Assumes monospaced font.
      x = 8 * len(m)
      y = 8
      return x, y, [itertools.chain(*row) for row in zip(*map(char, m))]
docs: Convert a single line of text *m* to a raster image,
      by rendering it using the font in *font*.
  
      A triple of (*width*, *height*, *pixels*) is returned;
      *pixels* is in boxed row packed pixel format.