code: def test_gt_device(self):
      assert not (cuda.Device(0) > cuda.Device(0))
      assert not (cuda.Device(0) > cuda.Device(0))
      assert cuda.Device(1) > cuda.Device(0)
  
imports: import re
  import threading
  import unittest
  import pytest
  import cupy
  from cupy import cuda
  from cupy import testing
label_desc: Use image node_id 5 for calling the TestDeviceComparison obj's underlying member method code with example usage: obj.test_gt_device() without return types