code: def ray_start_4_cpus():
      address_info = ray.init(num_cpus=4)
      yield address_info
      ray.shutdown()
  
file_path: ray/python/ray/air/tests/execution/test_tracked_actor_task.py
imports: from collections import Counter
  import pytest
  import ray
  from ray.air import ResourceRequest
  from ray.air.execution import FixedResourceManager, PlacementGroupResourceManager
  from ray.air.execution._internal.actor_manager import RayActorManager
label_desc: Use image node_id 1 for calling a global function with example usage: ray_start_4_cpus() without return types