def rotate(self, last_used):
        """Move most recently used item to end of list."""
        items = self.items
        try:
            items.append(items.pop(items.index(last_used)))
        except __HOLE__:
            pass
        return last_used
dataset/ETHPy150Open celery/kombu/kombu/utils/scheduling.py/round_robin_cycle.rotate