old_contents: import argparse, logging, codecs
  from translation_model import TranslationModel
  from nltk.translate.bleu_score import sentence_bleu as bleu
  
  def setup_args():
      parser = argparse.ArgumentParser()
      parser.add_argument('model', help='trained model')
      parser.add_argument('input', help='input sentences')
      parser.add_argument('out', help='translated sentences')
      parser.add_argument('--all', dest='all', action='store_true', help='Check all translations')
      args = parser.parse_args()
      return args
  
  
  def find_best_translation(input_line, results):
      best_bleu_score = 0.0
      best_index = 0
  
      for index, result in enumerate(results):
          if len(result.split()) == 0:
              continue
          bleu_score = bleu([input_line.split()], result.split(), weights=(1.0,))
          if bleu_score > best_bleu_score:
              best_bleu_score = bleu_score
              best_index = index
  
      return best_index
  
  
  def main():
      logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s', level=logging.INFO)
      args = setup_args()
      logging.info(args)
  
      tm = TranslationModel(args.model)
      fw_out = codecs.open(args.out, 'w', 'utf-8')
      for input_line in codecs.open(args.input, 'r', 'utf-8'):
          results = tm.translate(input_line.strip(), k = 20)
          if args.all:
              index = find_best_translation(input_line, results)
          else:
              index = 0
  
          fw_out.write(results[0][index] + '\n')
  
      fw_out.close()
  
  if __name__ == '__main__':
      main()
new_contents: import argparse, logging, codecs
  from translation_model import TranslationModel
  from nltk.translate.bleu_score import sentence_bleu as bleu
  
  def setup_args():
      parser = argparse.ArgumentParser()
      parser.add_argument('model', help='trained model')
      parser.add_argument('input', help='input sentences')
      parser.add_argument('out', help='translated sentences')
      parser.add_argument('--all', dest='all', action='store_true', help='Check all translations')
      args = parser.parse_args()
      return args
  
  
  def find_best_translation(input_line, results):
      best_bleu_score = 0.0
      best_index = 0
  
      for index, result in enumerate(results):
          if len(result[1].split()) == 0:
              continue
          bleu_score = bleu([input_line.split()], result[1].split(), weights=(1.0,))
          if bleu_score > best_bleu_score:
              best_bleu_score = bleu_score
              best_index = index
  
      return best_index
  
  
  def main():
      logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s', level=logging.INFO)
      args = setup_args()
      logging.info(args)
  
      tm = TranslationModel(args.model)
      fw_out = codecs.open(args.out, 'w', 'utf-8')
      for input_line in codecs.open(args.input, 'r', 'utf-8'):
          results = tm.translate(input_line.strip(), k = 20)
          if args.all:
              index = find_best_translation(input_line, results)
          else:
              index = 0
  
          fw_out.write(results[index][1] + '\n')
  
      fw_out.close()
  
  if __name__ == '__main__':
      main()
subject: fix index