docs: def start(authkey, queues, mode='local'):
    """Create a new multiprocess.Manager (or return existing one).
  
    Args:
      :authkey: string authorization key
      :queues: *INTERNAL_USE*
      :mode: 'local' indicates that the manager will only be accessible from the same host, otherwise remotely accessible.
  
    Returns:
      A TFManager instance, which is also cached in local memory of the Python worker process.
    """
    global mgr, qdict, kdict
    qdict.clear()
    kdict.clear()
    for q in queues:
      qdict[q] = JoinableQueue()
  
    TFManager.register('get_queue', callable=lambda qname: _get_queue(qname))
    TFManager.register('get', callable=lambda key: _get(key))
    TFManager.register('set', callable=lambda key, value: _set(key, value))
    if mode == 'remote':
      mgr = TFManager(address=('', 0), authkey=authkey)
    else:
      mgr = TFManager(authkey=authkey)
    mgr.start()
    return mgr