      def __str__(self):
          return self.name
  
  
  @python_2_unicode_compatible
  class District(models.Model):
      city = models.ForeignKey(City, models.CASCADE, primary_key=True)
      name = models.CharField(max_length=50)
  
      def __str__(self):
 
</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 __str__(self):
          return self.name
  
  

  class District(models.Model):
      city = models.ForeignKey(City, models.CASCADE, primary_key=True)
      name = models.CharField(max_length=50)
  
      def __str__(self):
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed python_2_unicode_compatible decorator usage 
tests/introspection/models.py