new_contents: import logging
  from lib import constants
  
  
  def set_default_file_handler(logger, log_path):
      formatter = logging.Formatter(constants.log.Logger.DEFAULT_FORMAT)
      fh = logging.FileHandler(filename=log_path, mode=constants.file.Mode.WRITE)
      fh.setFormatter(formatter)
      logger.addHandler(fh)
  
subject: Add logging helper library.