下面是我使用ipython的timeit函数得到的结果:

from datetime import date
today = date.today()

timeit[Model.objects.filter(date_created__year=today.year, date_created__month=today.month, date_created__day=today.day)]
1000 loops, best of 3: 652 us per loop

timeit[Model.objects.filter(date_created__gte=today)]
1000 loops, best of 3: 631 us per loop

timeit[Model.objects.filter(date_created__startswith=today)]
1000 loops, best of 3: 541 us per loop

timeit[Model.objects.filter(date_created__contains=today)]
1000 loops, best of 3: 536 us per loop

Contains似乎更快。

嗯. .我的解决方案是有效的:

Mymodel.objects.filter(date_time_field__startswith=datetime.datetime(1986, 7, 28))

你可以这样做

MyObject.objects.filter(datetime_field__date=datetime.date(2009,8,22))

或者如果你想在两个日期之间过滤

MyObject.objects.filter(
    datetime_field__date__range=(datetime.date(2009,8,22), datetime.date(2009,9,22))
)

YourModel.objects.filter(datetime_published__year='2008', 
                         datetime_published__month='03', 
                         datetime_published__day='27')

//在注释后编辑

YourModel.objects.filter(datetime_published=datetime(2008, 03, 27))

不工作，因为它创建了一个时间值设置为0的datetime对象，因此数据库中的时间不匹配。

假设active_on是一个日期对象，将其增加1天，然后执行range

next_day = active_on + datetime.timedelta(1)
queryset = queryset.filter(date_created__range=(active_on, next_day) )

很简单，如果你有一个datetimefield你可以使用datetime。date。today()

context['now'] = Mymodel.objects.filter(date_time_field=datetime.date.today())