code: def hashtag_links(uri, s):
      
      for tag, after in hashtag_re.findall(s):
          _uri = '/' + (uri or "").lstrip("/") + quote(tag)
          link = '<a href="{}">#{}</a>{}'.format(_uri.lower(), tag, after)
          s = s.replace('#' + tag, link)
      return s
docs: Turns hashtag-like strings into HTML links
  
          @uri: /uri/ root for the hashtag-like
          @s: the #str string you're looking for |#|hashtags in
  
          -> #str HTML link |<a href="/uri/hashtag">hashtag</a>|