code: def create(source, dest, tracker, open_trackers, comment, cache):
      
  
      source_title = path.basename(source).replace('.', '_').replace(' ', '_')
      dest = '%s.torrent' % path.join(dest, source_title)
  
      click.secho('Creating torrent from %s ...' % source)
  
      my_torrent = Torrent.create_from(source)
  
      if comment:
          my_torrent.comment = comment
  
      urls = []
  
      if tracker:
          urls = tracker.split(',')
  
      if open_trackers:
          click.secho('Fetching an up-to-date open tracker list ...')
          try:
              urls.extend(get_open_trackers_from_remote())
          except RemoteDownloadError:
              click.secho('Failed. Using built-in open tracker list.', fg='red', err=True)
              urls.extend(get_open_trackers_from_local())
  
      if urls:
          my_torrent.announce_urls = urls
  
      my_torrent.to_file(dest)
  
      click.secho('Torrent file created: %s' % dest, fg='green')
      click.secho('Torrent info hash: %s' % my_torrent.info_hash, fg='blue')
  
      if cache:
          click.secho('Uploading to %s torrent cache service ...')
          try:
              result = upload_to_cache_server(dest)
              click.secho('Cached torrent URL: %s' % result, fg='yellow')
  
          except RemoteUploadError as e:
              click.secho('Failed: %s' % e, fg='red', err=True)
docs: Create torrent file from a single file or a directory.