code: def parse_args():
      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("./spm_bpe_4096.model"),
          type=pathlib.Path,
          help="File to save model to. (Default: './spm_bpe_4096.model')",
      )
      return parser.parse_args()
  
file_path: audio/examples/asr/emformer_rnnt/librispeech/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