  from __future__ import unicode_literals
  
  import re
  from bisect import bisect
  
  from django.conf import settings
  from django.db.models.fields.related import ManyToManyRel
  from django.db.models.fields import AutoField, FieldDoesNotExist
 
</s> remove from django.core.urlresolvers import reverse
 </s> add  </s> remove         response['X-Object-Type'] = "%s.%s" % (model._meta.app_label, model._meta.object_name.lower())
 </s> add         response['X-Object-Type'] = "%s.%s" % (model._meta.app_label, model._meta.model_name) </s> remove     return '%s_%s' % (action, opts.object_name.lower())
 </s> add     return '%s_%s' % (action, opts.model_name) </s> remove     Helper to look up a model from an "app_label.module_name" string.
 </s> add     Helper to look up a model from an "app_label.model_name" string.
import warnings
  from __future__ import unicode_literals
  
  import re
  from bisect import bisect
import warnings
  
  from django.conf import settings
  from django.db.models.fields.related import ManyToManyRel
  from django.db.models.fields import AutoField, FieldDoesNotExist
keep keep keep add keep keep keep keep
 Fixed #19689 -- Renamed `Model._meta.module_name` to `model_name`. 
django/db/models/options.py