code: def w(msg, *args, **kwargs):
  
      '''
      log a message at warn level;
      '''
  
      return logging.log(WARN, msg, *args, **kwargsf w(msg, *args, **kwargs):
  
      '''
      log a message at warn level;
      '''
  
      return logging.log(WARN, msg, *args, **kwargs)
docs: log a message at warn level;