code: def ray_start_1_cpu():
      address_info = ray.init(num_cpus=2)
      yield address_info
      # The code after the yield will run as teardown code.
      ray.shutdown()
  
file_path: ray/python/ray/util/dask/tests/test_dask_callback.py
imports: import dask
  import pytest
  import ray
  from ray.util.dask import ray_dask_get, RayDaskCallback
label_desc: Use image node_id 1 for calling a global function with example usage: ray_start_1_cpu() without return types