      class_prepared, post_init, post_save, pre_init, pre_save,
  )
  from django.db.models.utils import make_model_tuple
  from django.utils import six
  from django.utils.encoding import (
      force_str, force_text, python_2_unicode_compatible,
  )
  from django.utils.functional import curry
  from django.utils.six.moves import zip
  from django.utils.text import capfirst, get_text_list
  from django.utils.translation import ugettext_lazy as _
  from django.utils.version import get_version
 
</s> remove from django.utils.encoding import (
    force_bytes, force_text, python_2_unicode_compatible, smart_text,
)
 </s> add from django.utils.encoding import force_bytes, force_text, smart_text </s> remove from django.utils.encoding import (
    force_str, force_text, python_2_unicode_compatible,
)
 </s> add from django.utils.encoding import force_str, force_text </s> remove from django.utils.encoding import (
    force_str, force_text, python_2_unicode_compatible,
)
 </s> add from django.utils.encoding import force_str, force_text </s> remove @python_2_unicode_compatible
 </s> add  </s> remove from django.utils.encoding import (
    force_bytes, force_str, force_text, python_2_unicode_compatible,
)
 </s> add from django.utils.encoding import force_bytes, force_str, force_text
from django.utils.encoding import force_str, force_text
      class_prepared, post_init, post_save, pre_init, pre_save,
  )
  from django.db.models.utils import make_model_tuple
  from django.utils import six
from django.utils.encoding import force_str, force_text
from django.utils.encoding import force_str, force_text
from django.utils.encoding import force_str, force_text
  from django.utils.functional import curry
  from django.utils.six.moves import zip
  from django.utils.text import capfirst, get_text_list
  from django.utils.translation import ugettext_lazy as _
  from django.utils.version import get_version
keep keep keep keep replace replace replace keep keep keep keep keep
 Refs #23919 -- Removed python_2_unicode_compatible decorator usage 
django/db/models/base.py