code: def __init__(self, cnt):
      self.cnt = cnt
  
imports: import asyncio
  import logging
  import os
  import numpy
  import pytest
  import pandas
  import time
  from ....None import dataframe
  from ....None import oscar
  from ....None import tensor
  from ....oscar.backends.ray.utils import process_address_to_placement, process_placement_to_address, kill_and_wait
  from ....services.cluster import ClusterAPI
  from ....services.scheduling.supervisor.autoscale import AutoscalerActor
  from ....tests.core import require_ray
  from ....utils import lazy_import
  from ..ray import new_cluster, _load_config
  from ..tests import test_local
label_desc: Use image node_id 1 to create a new CountDownLatch object  with example: obj = CountDownLatch(cnt)