code: def to_torrent(magnet_link):
      
      infoHash = parse_magnet(magnet_link)['infoHash']
      torcache = 'http://torcache.net/torrent/' + infoHash + '.torrent'
      torrage = 'https://torrage.com/torrent/' + infoHash + '.torrent'
      reflektor = 'http://reflektor.karmorra.info/torrent/' + \
          infoHash + '.torrent'
      thetorrent = 'http://TheTorrent.org/'+infoHash
      btcache = 'http://www.btcache.me/torrent/'+infoHash
      for link in [torcache, torrage, reflektor, btcache, thetorrent]:
          try:
              print "Checking "+link
              response = requests.head(link, headers=HEADERS)
              if response.headers['content-type'] in ['application/x-bittorrent',
                                                      'application/octet-stream']:
                  return link
          except requests.exceptions.ConnectionError:
              pass
      return
docs: turn a magnet link to a link to a torrent file