code: def check_kuberay_installed():
      # Make sure the ray namespace exists
      KUBERAY_VERSION = "v1.0.0"
      uri = (
          "github.com/ray-project/kuberay/manifests"
          f"/base?ref={KUBERAY_VERSION}&timeout=90s"
      )
      print(
          subprocess.check_output(
              [
                  "kubectl",
                  "apply",
                  "-k",
                  uri,
              ]
          ).decode()
      )
      pods = subprocess.check_output(
          [
              "kubectl",
              "get",
              "pods",
              "--namespace",
              "ray-system",
              "--no-headers",
          ]
      ).decode()
      assert pods.split("\n") != 0
  
imports: import enum
  import json
  import subprocess
  from kubernetes import client, config, watch
  import requests
  import random
  import uuid
  import pathlib
  import time
  import ray
  import os
label_desc: Use image node_id 2 for calling a global function with example usage: check_kuberay_installed() without return types