python – 具有相同字段值的对象组

我有两个这样的模型:

class Schedule(models.Model):
    name = models.CharField(_('name'), blank=True, max_length=15)


class Day(models.Model):
    DAYS_OF_THE_WEEK = (
        (0, _('Monday')),
        (1, _('Tuesday')),
        (2, _('Wednesday')),
        (3, _('Thursday')),
        (4, _('Friday')),
        (5, _('Saturday')),
        (6, _('Sunday')),
    )
    schedule = models.ForeignKey(Schedule, blank=True, null=True, verbose_name=_('schedule'))
    day = models.SmallIntegerField(_('day'), choices=DAYS_OF_THE_WEEK)
    opening = models.TimeField(_('opening'), blank=True)
    closing = models.TimeField(_('closing'), blank=True)

计划可能有两个Day对象,如下所示:

Day(schedule = 1,day = 0,opening = datetime.time(7,30),closing = datetime.time(10,30))
Day(schedule = 1,day = 0,opening = datetime.time(12,30),closing = datetime.time(15,30))

喜欢同一天不同的班次.

如果我现在迭代它们,我会得到第0天的两个条目,就像这样
    [日程安排]
    [0,0,1,2,3,4,5,6]

如何创建一个查询集,以便它将相同的日期组合在一起并保留其属性?

[day for day in schedule]
[0 (two entries), 1, 3, 4, 5, 6]

也许是这样的

[id: [day], id: [day]]

最佳答案 我最终使用的代码是这样的:

from itertools import groupby

day_set = store.schedule_set.all()[0].day_set.all()
    schedule = dict()
    for k, v in groupby(day_set, lambda x: x.day):
        schedule[k] = list(v)

并将计划发送到模板进行渲染,其效果就像一个魅力.

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