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/train/tests/test_e2e_wandb_integration.py
imports: import pytest
  import ray
  from ray.air.integrations.wandb import WANDB_ENV_VAR
  from ray.air.tests.mocked_wandb_integration import WandbTestExperimentLogger
  from ray.train import RunConfig, ScalingConfig
  from ray.train.examples.pytorch.torch_linear_example import train_func
  from ray.train.torch import TorchTrainer
label_desc: Use image node_id 1 for calling a global function with example usage: ray_start_4_cpus() without return types