code: def rating_mailru(parser, token):
      
      bits = token.split_contents()
      if len(bits) > 1:
          raise TemplateSyntaxError("'%s' takes no arguments" % bits[0])
      return RatingMailruNode()
docs: Rating@Mail.ru counter template tag.
  
      Renders Javascript code to track page visits. You must supply
      your website counter ID (as a string) in the
      ``RATING_MAILRU_COUNTER_ID`` setting.