  from django.db import models
  from django.utils.encoding import python_2_unicode_compatible
  
  
  @python_2_unicode_compatible
  class RevisionableModel(models.Model):
      base = models.ForeignKey('self', models.SET_NULL, null=True)
      title = models.CharField(blank=True, max_length=255)
      when = models.DateTimeField(default=datetime.datetime.now)
  
 
</s> remove from django.utils.encoding import 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 
  from django.db import models
  from django.utils.encoding import python_2_unicode_compatible
  
  

  class RevisionableModel(models.Model):
      base = models.ForeignKey('self', models.SET_NULL, null=True)
      title = models.CharField(blank=True, max_length=255)
      when = models.DateTimeField(default=datetime.datetime.now)
  
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed python_2_unicode_compatible decorator usage 
tests/extra_regress/models.py