在Django 1.7.6中工作:

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

在Django 1.7.6中工作:

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

请参阅文章Django文档

ur_data_model.objects.filter(ur_date_field__gte=datetime(2009, 8, 22), ur_date_field__lt=datetime(2009, 8, 23))

这样的查找在django.views.generic中实现。Date_based如下:

{'date_time_field__range': (datetime.datetime.combine(date, datetime.time.min),
                            datetime.datetime.combine(date, datetime.time.max))} 

因为它相当冗长，所以计划使用__date操作符改进语法。查看“#9596比较DateTimeField和日期太难了”了解更多细节。

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

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。