queryset=yourobject.objects .filter(时间字段名称__lt=start)

queryset=yourobject.objects .filter(时间字段名称__lte=start)

now = datetime.datetime.now()
#前一天
start = now – datetime.timedelta(hours=23, minutes=59, seconds=59)

start = now+datetime.timedelta(day=-1)
queryset=MemberRole.objects .filter(时间字段名称__gt=start)

queryset=MemberRole.objects .filter(时间字段名称__gte=start)

MemberRole.objects.filter(时间字段名称__year=2005)

MemberRole.objects.filter(时间字段名称__month=12)

MemberRole.objects.filter(时间字段名称__day=3)

MemberRole.objects.filter(时间字段名称__week_day=2)

start_date = datetime.date(2005, 1, 1)
end_date = datetime.date(2005, 3, 31)
MemberRole.objects.filter(时间字段名称__range=(start_date, end_date))