code: def test_redis_relock():
      channel = str(random.random())
  
      lock_a = redis.RedisLock(channel, fail_when_locked=True)
      with lock_a:
          time.sleep(0.01)
          with pytest.raises(AssertionError):
              lock_a.acquire()
      time.sleep(0.01)
  
      lock_a.release()
  
file_path: catboost/contrib/python/portalocker/py3/tests/test_redis.py
imports: import _thread
  import logging
  import random
  import time
  import pytest
  from redis import client
  from redis import exceptions
  import portalocker
  from portalocker import redis
  from portalocker import utils
label_desc: Use image node_id 5 for calling a global function with example usage: test_redis_relock() without return types