code: def __init__(self, world_size):
      self.ready_events = [asyncio.Event() for _ in range(world_size)]
      self.world_size = world_size
  
imports: import asyncio
  import time
  from typing import List
  import numpy
  import ray
  import ray.experimental.internal_kv
  from ray._raylet import GcsClient
  from ray.util.collective.types import ReduceOp, torch_available
  from ray.util.queue import _QueueActor
label_desc: Use image node_id 1 to create a new SignalActor object  with example: obj = SignalActor(world_size)