  from django.db.models.deletion import Collector
  from django.db.models.expressions import Date, DateTime, F
  from django.db.models.fields import AutoField
  from django.db.models.query_utils import (
      InvalidQuery, Q, check_rel_lookup_compatibility, deferred_class_factory,
  )
  from django.db.models.sql.constants import CURSOR
  from django.utils import six, timezone
  from django.utils.deprecation import RemovedInDjango20Warning
  from django.utils.functional import partition
 
</s> remove from django.db.models.query_utils import (
    DeferredAttribute, deferred_class_factory,
)
 </s> add  </s> remove from django.db.models.query_utils import RegisterLookupMixin
 </s> add from django.db.models.query_utils import DeferredAttribute, RegisterLookupMixin </s> remove from django.utils.encoding import force_str, force_text
 </s> add from django.utils.encoding import (
    force_str, force_text, python_2_unicode_compatible,
) </s> remove from django.db import models
 </s> add  </s> remove from django.db.models.query_utils import (
    DeferredAttribute, deferred_class_factory,
)
 </s> add 
    InvalidQuery, Q, check_rel_lookup_compatibility,
  from django.db.models.deletion import Collector
  from django.db.models.expressions import Date, DateTime, F
  from django.db.models.fields import AutoField
  from django.db.models.query_utils import (
    InvalidQuery, Q, check_rel_lookup_compatibility,
  )
  from django.db.models.sql.constants import CURSOR
  from django.utils import six, timezone
  from django.utils.deprecation import RemovedInDjango20Warning
  from django.utils.functional import partition
keep keep keep keep replace keep keep keep keep keep
 Fixed #26207 -- Replaced dynamic classes with non-data descriptors for deferred instance loading. 
django/db/models/query.py