code: def urldefrag(url):
      
      if '#' in url:
          s, n, p, a, q, frag = urlparse(url)
          defrag = urlunparse((s, n, p, a, q, ''))
          return defrag, frag
      else:
          return url, ''
docs: Removes any existing fragment from URL.
  
      Returns a tuple of the defragmented URL and the fragment.  If
      the URL contained no fragments, the second element is the
      empty string.