schedule.py 文件源码

def at(self, time_str):
        """Schedule the job every day at a specific time.
        Calling this is only valid for jobs scheduled to run every
        N day(s).
        """
        assert self.unit in ('days', 'hours') or self.start_day
        hour, minute = time_str.split(':')
        minute = int(minute)
        if self.unit == 'days' or self.start_day:
            hour = int(hour)
            assert 0 <= hour <= 23
        elif self.unit == 'hours':
            hour = 0
        assert 0 <= minute <= 59
        self.at_time = datetime.time(hour, minute)
        return self