code: def runner_info():
      hosts = {"worker-0": 4, "worker-1": 4}
      world_info = encode_world_info(hosts)
      env = deepcopy(os.environ)
      args = parse_args(["test_launcher.py"])
      return env, hosts, world_info, args
  
file_path: DeepSpeed/tests/unit/launcher/test_multinode_runner.py
imports: from copy import deepcopy
  from deepspeed.launcher import multinode_runner
  from deepspeed.launcher.runner import encode_world_info, parse_args
  import os
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: runner_info() and returns: env,  hosts,  world_info,  args