code: def ray_start_4_cpus():
      address_info = ray.init(num_cpus=4)
      yield address_info
      # The code after the yield will run as teardown code.
      ray.shutdown()
  
file_path: ray/python/ray/tune/tests/test_multi_tenancy.py
imports: import os
  import pytest
  import subprocess
  import sys
  from pathlib import Path
  import ray
label_desc: Use image node_id 1 for calling a global function with example usage: ray_start_4_cpus() without return types