code: def _ParseLogFileOptions(self, options):
      
      self._log_file = self.ParseStringOption(options, 'log_file')
      if not self._log_file:
        local_date_time = datetime.datetime.now()
        self._log_file = (
            '{0:s}-{1:04d}{2:02d}{3:02d}T{4:02d}{5:02d}{6:02d}.log.gz').format(
                self.NAME, local_date_time.year, local_date_time.month,
                local_date_time.day, local_date_time.hour, local_date_time.minute,
                local_date_time.second)
docs: Parses the log file options.
  
      Args:
        options (argparse.Namespace): command line arguments.