code: def get_parser():
      parser = argparse.ArgumentParser(
          description="Compute cepstral mean and variance normalization statistics"
          "per-utterance by default, or per-speaker if spk2utt option provided,"
          "if wxfilename: global",
          formatter_class=argparse.ArgumentDefaultsHelpFormatter,
      )
      parser.add_argument(
          "--spk2utt",
          type=str,
          default=None,
          help="A text file of speaker to utterance-list map. "
          '(Don\'t give rspecifier format, such as "ark:spk2utt")',
      )
      parser.add_argument(
          "--verbose", "-V", default=0, type=int, help="Verbose option"
      )
      parser.add_argument(
          "rspecifier",
          type=str,
          help="Read specifier id. e.g. scp:some.scp",
      )
      parser.add_argument(
          "wspecifier_or_wxfilename",
          type=str,
          help="Write specifier id. e.g. ark:some.ark",
      )
      return parser
  
file_path: delta/egs/mini_an4/asr/v1/speech/compute_cmvn_stats.py
imports: import argparse
  import logging
  import kaldiio
  import numpy
  from espnet.utils.cli_writers import KaldiWriter
  from espnet.utils.cli_readers import KaldiReader
  import os
label_desc: Use image node_id 1 for calling a global function with example usage: get_parser() and returns: parser