code: def abs_urls(data, target_url, image_url):
      
      def replacer(regex, url):
          replacement = r"\1 {0}/\2".format(url.rstrip("/"))
          return lambda line: regex.sub(replacement, line, count=1)
      replacers = [replacer(REGEX_ABS_URLS_TARGET, target_url),
                   replacer(REGEX_ABS_URLS_IMAGE, image_url)]
      return [functools.reduce(lambda el, func: func(el), replacers, line)
              for line in data]
docs: Filter for a list of reStructuredText lines that replaces relative
      link targets and image sources by absolute URLs given the base
      URLs that should be used (``target_url`` for link targets,
      ``image_url``for image sources). Returns a list of strings.