Model.objects.filter(datetime__year=2011, datetime__month=2, datetime__day=30)

在Django 1.7.6中工作:

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

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())

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))
)

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。

这产生了与使用__year， __month，和__day相同的结果，并且似乎对我有用:

YourModel.objects.filter(your_datetime_field__startswith=datetime.date(2009,8,22))