      def get_queryset(self):
          return super(ArticleManager, self).get_queryset().filter(authors__name__icontains='sir')
  
  
  @python_2_unicode_compatible
  class Article(models.Model):
      authors = models.ManyToManyField(Author)
      title = models.CharField(max_length=50)
      objects = models.Manager()
      by_a_sir = ArticleManager()
 
</s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add  </s> remove @python_2_unicode_compatible
 </s> add 
      def get_queryset(self):
          return super(ArticleManager, self).get_queryset().filter(authors__name__icontains='sir')
  
  

  class Article(models.Model):
      authors = models.ManyToManyField(Author)
      title = models.CharField(max_length=50)
      objects = models.Manager()
      by_a_sir = ArticleManager()
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed python_2_unicode_compatible decorator usage 
tests/get_object_or_404/models.py