code: def test_cmuarctic_str(self):
      dataset = CMUDict(self.root_punc_dir, exclude_punctuations=True)
      self._test_cmudict(dataset)
  
file_path: audio/test/torchaudio_unittest/datasets/cmudict_test.py
imports: import os
  from pathlib import Path
  from torchaudio.datasets import CMUDict
  from torchaudio_unittest.common_utils import TempDirMixin, TorchaudioTestCase
label_desc: Use image node_id 7 for calling the TestCMUDict obj's underlying member method code with example usage: obj.test_cmuarctic_str() without return types