code: def _get_timit(directory):
    
    if os.path.exists(os.path.join(directory, "timit")):
      return
  
    assert FLAGS.timit_paths
    for path in FLAGS.timit_paths.split(","):
      with tf.gfile.GFile(path) as f:
        with tarfile.open(fileobj=f, mode="r:gz") as timit_compressed:
          timit_compressed.extractall(directory)
docs: Extract TIMIT datasets to directory unless directory/timit exists.