code: def test_lt_device(self):
      assert cuda.Device(0) < cuda.Device(1)
      assert not (cuda.Device(0) < cuda.Device(0))
      assert not (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 3 for calling the TestDeviceComparison obj's underlying member method code with example usage: obj.test_lt_device() without return types