code: def get_parser():
      parser = argparse.ArgumentParser(description="convert trn to ctm")
      parser.add_argument(
          "trn", type=str, default=None, nargs="?", help="input trn"
      )
      parser.add_argument(
          "ctm", type=str, default=None, nargs="?", help="output ctm"
      )
      return parser
  
file_path: espnet/utils/trn2ctm.py
imports: import argparse
  import codecs
  import math
  import re
  import sys
label_desc: Use image node_id 1 for calling a global function with example usage: get_parser() and returns: parser