code: def _lookup_online(word):
      
      URL = "https://www.diki.pl/{word}"
      HEADERS = {
          "User-Agent": (
              "Mozilla/5.0 (compatible, MSIE 11, Windows NT 6.3; "
              "Trident/7.0;  rv:11.0) like Gecko"
          )
      }
  
      logger.debug("Looking up online: %s", word)
      quoted_word = urllib.parse.quote(word)
      req = urllib.request.Request(URL.format(word=quoted_word), headers=HEADERS)
      with urllib.request.urlopen(req) as response:
          html_string = response.read().decode()
  
      return html.unescape(html_string)
docs: Look up word on diki.pl.
  
      Parameters
      ----------
      word : str
          Word too look up.
  
      Returns
      -------
      str
          website HTML content.