code: def assertSimilar(self, bytes_1, bytes_2):
      for i, (byte_1, byte_2) in enumerate(zip(bytes_1, bytes_2)):
          if abs(byte_1 - byte_2) > 2:
              raise AssertionError(
                  "{} is really different from {} at index {}".format(
                      bytes_1, bytes_2, i
                  )
              )
  
imports: import unittest
  from os import path
  import speech_recognition
label_desc: Use image node_id 1 for calling the TestAudioFile obj's underlying member method code with example usage: obj.assertSimilar(bytes_1, bytes_2) without return types