def CheckRange(self, diagnostics, cron_time_field):
    if self._start > self._end:
      diagnostics.append('%d is greater than %d in field "%s" (%s)'
                         % (self._start, self._end, cron_time_field.name,
                            self))
Checks if a range isn't too high for a field.
dataset/ETHPy150Open lyda/chkcrontab/chkcrontab_lib.py/CronTimeField.CheckRange