def worker_id(self):
        """A unique identifier for this queue instance and the items it owns."""
        if self._worker_id is not None: return self._worker_id
        return self._get_worker_id(self._conn())
def worker_id ( self ) : if self . _worker_id is not None : return self . _worker_id return self . _get_worker_id ( self . _conn ( ) )
A unique identifier for this queue instance and the items it owns.