docs: def image_from_name(name, images):
  
      """Return an image from a list of images.  If the name is an exact
      match, return the last exactly matching image.  Otherwise, sort
      images by 'natural' order, using decorate-sort-undecorate, and
      return the largest.
  
      see:
      http://code.activestate.com/recipes/285264-natural-string-sorting/
      """
  
      prefixed_images = [i for i in images if i.name.startswith(name)]
  
      if name in [i.name for i in prefixed_images]:
          return [i for i in prefixed_images if i.name == name][-1]
  
      decorated = sorted(
          [(int(re.search('\d+', i.name).group(0)), i) for i in prefixed_images])
      return [i[1] for i in decorated][-1]