code: def assert_device_count_fail(self):
      os.environ["CUDA_VISIBLE_DEVICES"] = "0,1"
      import paddle
  
      assert paddle.device.cuda.device_count() == 2
  
imports: import os
  import unittest
  import parl
  from parl.remote.master import Master
  from parl.remote.worker import Worker
  import time
  import threading
  from parl.remote.client import disconnect
  from parl.remote import exceptions
  import subprocess
  from parl.utils import logger
  from parl.utils import get_free_tcp_port
  from parl.utils.test_utils import XparlTestCase
label_desc: Use image node_id 9 for calling the Actor obj's underlying member method code with example usage: obj.assert_device_count_fail() without return types