code: def test_le_device(self):
      assert cuda.Device(0) <= cuda.Device(1)
      assert 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 4 for calling the TestDeviceComparison obj's underlying member method code with example usage: obj.test_le_device() without return types