code: def test_device_attributes(self):
      d = cuda.Device()
      attributes = d.attributes
      assert isinstance(attributes, dict)
      assert all(isinstance(a, int) for a in attributes.values())
      # test a specific attribute that would be present on any supported GPU
      assert "MaxThreadsPerBlock" in attributes
  
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 1 for calling the TestDeviceAttributes obj's underlying member method code with example usage: obj.test_device_attributes() without return types