code: def switch_to_ray_parent_dir():
      # Switch to parent of Ray repo, because that's what the doc examples do.
      logger.info("Switching to parent of Ray directory.")
      os.chdir(RAY_PARENT)
  
imports: import atexit
  import contextlib
  import logging
  import pathlib
  import subprocess
  import tempfile
  import time
  from typing import Any, Dict, Generator, List, Optional
  import yaml
  import os
  import ray
  from ray.job_submission import JobStatus, JobSubmissionClient
label_desc: Use image node_id 1 for calling a global function with example usage: switch_to_ray_parent_dir() without return types