code: def test_defaults(self):
      self.assertEqual(config.BACKEND, "numpy")
      self.assertEqual(config.get_backend(), "numpy")
  
      self.assertEqual(config.DTYPE, "float64")
      self.assertEqual(config.get_dtype(), "float64")
  
      self.assertEqual(config.DEVICE, None)
      self.assertEqual(config.get_device(), None)
  
      self.assertEqual(config.SHOW_PROGRESS, True)
      self.assertEqual(config.get_show_progress(), True)
  
file_path: pgmpy/pgmpy/tests/test_global_vars.py
imports: import unittest
  import numpy
  import torch
  from pgmpy import config
label_desc: Use image node_id 1 for calling the TestConfig obj's underlying member method code with example usage: obj.test_defaults() without return types