      def __str__(self):
          return self.title
  
  
  @python_2_unicode_compatible
  class Comment(models.Model):
      post = models.ForeignKey(Post, models.SET_NULL, null=True)
      comment_text = models.CharField(max_length=250)
  
      class Meta:
 
</s>
      def __str__(self):
          return self.title
  
  

  class Comment(models.Model):
      post = models.ForeignKey(Post, models.SET_NULL, null=True)
      comment_text = models.CharField(max_length=250)
  
      class Meta:
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed python_2_unicode_compatible decorator usage
tests/null_fk_ordering/models.py