如何在Django ORM查询中进行日期计算？

from datetime import date, timedelta
from django.db.models import Q

start_date = date.today() - timedelta(days=7)
end_date = date.today()

objects = MyModel.objects.filter(created_at__date__range=(start_date, end_date))

from datetime import date
from django.db.models import Q

current_month = date.today().month

objects = MyModel.objects.filter(created_at__month=current_month)

from datetime import date
from django.db.models import Q

specific_date = date(2022, 1, 1)

objects = MyModel.objects.filter(created_at__gt=specific_date)