code: def test_recognizer_attributes(self):
      r = sr.Recognizer()
  
      self.assertEqual(r.energy_threshold, 300)
      self.assertTrue(r.dynamic_energy_threshold)
      self.assertEqual(r.dynamic_energy_adjustment_damping, 0.15)
      self.assertEqual(r.dynamic_energy_ratio, 1.5)
      self.assertEqual(r.pause_threshold, 0.8)
      self.assertIsNone(r.operation_timeout)
      self.assertEqual(r.phrase_threshold, 0.3)
      self.assertEqual(r.non_speaking_duration, 0.5)
  
imports: import http
  import os
  import unittest
  from unittest.mock import patch, MagicMock
  import speech_recognition
label_desc: Use image node_id 2 for calling the TestRecognition obj's underlying member method code with example usage: obj.test_recognizer_attributes() without return types