old_contents: from django.db import models
  
  # Create your models here.
  
new_contents: from django.db import models
  
  class Poll(models.Model):
      question = models.CharField(max_length=200)
      pub_date = models.DateTimeField('date published')
  
  class Choice(models.Model):
      poll = models.ForeignKey(Poll);
      choice_text = models.CharField(max_length=200)
      votes = models.IntegerField(default=0)
subject: add Poll