new_contents: import datetime
  
  from django.db import models
  from django.utils import timezone
  
  # Create your models here.
  class Question(models.Model):
      question_text = models.CharField(max_length=200)
      pub_date = models.DateTimeField('date published')
      def __str__(self):
          return self.question_text
      def was_published_recently(self):
          now = timezone.now()
          return now - datetime.timedelta(days=1) <= self.pub_date <= now
  
  
  class Choice(models.Model):
      question = models.ForeignKey(Question)
      choice_text = models.CharField(max_length=200)
      votes = models.IntegerField(default=0)
      def __str__(self):
          return self.choice_text
  
subject: Create models.py