old_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import argparse
  from langdetect import detect
  
  def main():
      """
      guesslang entry point
      """
  
      parser = argparse.ArgumentParser()
  
      parser.add_argument(
              'text',
              help='the text for which to guess the language')
  
      args = parser.parse_args()
  
      print(language(args.text))
      return
  
  def language(txt):
      """ returns the language of the txt """
  
      lang = None
      try:
          lang = detect(txt)
      except:
          pass
  
      return lang
  
  
  if __name__ == '__main__':
      main()
  
new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  import argparse
  from langdetect import detect
  
  def main():
      """
      guesslang entry point
      """
  
      parser = argparse.ArgumentParser()
  
      parser.add_argument(
              'text',
              help='the text for which to guess the language')
  
      args = parser.parse_args()
  
      print language(args.text)
      return
  
  def language(txt):
      """ returns the language of the txt """
  
      lang = None
      try:
          lang = detect(txt)
      except:
          pass
  
      return lang
  
  
  if __name__ == '__main__':
      main()
  
subject: Update guesslang.py