您可以定义函数minutes_slices()来准备您需要的时间列表，然后从Teacher示例中使用它，如Teacher.objects.get(pk=1).minutes_slices()

from datetime import date, datetime, timedelta

class Teacher(models.Model):
    name = models.CharField(max_length=64)
    start_time = models.TimeField(blank=False)
    end_time = models.TimeField(blank=False)
    day = models.IntegerField(choices=DAYS_OF_WEEK)

    def minutes_slices(self, minutes=15):
        # We can't add minutes to datetime.time, so we need to convert it to datetime
        start_date_time = datetime.combine(date.today(), self.start_time)
        end_date_time = datetime.combine(date.today(), self.end_time)
        next_time = start_date_time
        minutes_slices = [next_time.time()]
        if start_date_time < end_date_time:
            while next_time < end_date_time:
                next_time += timedelta(minutes=minutes)
                minutes_slices.append(next_time.time())
        return minutes_slices

如果需要格式化，可以将.strftime("%H:%M")添加到time（）。