code: def parse_args():
      default_output_path = "./spm_unigram_1023.model"
      parser = ArgumentParser(
          description=__doc__, formatter_class=RawTextHelpFormatter
      )
      parser.add_argument(
          "--librispeech-path",
          required=True,
          type=pathlib.Path,
          help="Path to LibriSpeech dataset.",
      )
      parser.add_argument(
          "--output-file",
          default=pathlib.Path(default_output_path),
          type=pathlib.Path,
          help=f"File to save model to. (Default: '{default_output_path}')",
      )
      return parser.parse_args()
  
file_path: audio/examples/asr/librispeech_conformer_rnnt/train_spm.py
imports: import io
  import pathlib
  from argparse import ArgumentParser, RawTextHelpFormatter
  import sentencepiece
label_desc: Use image node_id 4 for calling a global function with example usage: parse_args() and returns: parser