code: def _init_ray():
      return ray.init(num_cpus=2, object_store_memory=700e6)
  
imports: import numpy
  import json
  import random
  import os
  import shutil
  import platform
  import pytest
  import psutil
  import ray
  from ray._private.test_utils import check_spilled_mb, fetch_prometheus, wait_for_condition
label_desc: Use image node_id 1 for calling a global function with example usage: _init_ray() and returns: ray