code: def get_parser():
      parser = argparse.ArgumentParser(
          description="Command-line script for BLEU scoring."
      )
      # fmt: off
      parser.add_argument('-s', '--sys', default='-', help='system output')
      parser.add_argument('-r', '--ref', required=True, help='references')
      parser.add_argument('-o', '--order', default=4, metavar='N',
                          type=int, help='consider ngrams up to this order')
      parser.add_argument('--ignore-case', action='store_true',
                          help='case-insensitive scoring')
      parser.add_argument('--sacrebleu', action='store_true',
                          help='score with sacrebleu')
      parser.add_argument('--sentence-bleu', action='store_true',
                          help='report sentence-level BLEUs (i.e., with +1 smoothing)')
      # fmt: on
      return parser
  
imports: import argparse
  import os
  import sys
  from fairseq.data import dictionary
  from fairseq.scoring import bleu
label_desc: Use image node_id 1 for calling a global function with example usage: get_parser() and returns: parser