Django 中datetime的使用

我需要每天将该voted_today字段重置为0。

from django.db import models
from datetime import datetime, time

from django.conf import settings
from places.models import Place


class Subscription(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.DO_NOTHING)
    place = models.ForeignKey(Place, on_delete=models.DO_NOTHING)
    last_vote_date = models.DateTimeField(default=datetime.now)
    voted_today = models.IntegerField(default=0, editable=True)

    def __str__(self):
        return self.user

我认为是这样：

    def reset_votes_day(user, current_stade):
        subscription = get_object_or_404(Subscription, user=user, place=current_stade.place)
        if (subscription.last_vote_date != today()):
            subscription.voted_today = 0
            subscription.save()

但我不知道该如何解决： subscription.last_vote_date != today()