  from django.db.models.constants import LOOKUP_SEP
  from django.db.models.expressions import Col, Expression
  from django.db.models.lookups import Lookup, Transform
  from django.db.models.sql.query import Query
  from django.utils import six
  
  gis_lookups = {}
  
  
  class RasterBandTransform(Transform):
 
</s> remove from django.utils import six
 </s> add  </s> remove from django.utils import six
 </s> add  </s> remove from django.utils import six
 </s> add  </s> remove from django.utils import six
 </s> add  </s> remove NUMERIC_TYPES = six.integer_types + (float, Decimal)
 </s> add NUMERIC_TYPES = (int, float, Decimal)
  from django.db.models.constants import LOOKUP_SEP
  from django.db.models.expressions import Col, Expression
  from django.db.models.lookups import Lookup, Transform
  from django.db.models.sql.query import Query

  
  gis_lookups = {}
  
  
  class RasterBandTransform(Transform):
keep keep keep keep replace keep keep keep keep keep
 Refs #23919 -- Removed six.<various>_types usage

Thanks Tim Graham and Simon Charette for the reviews. 
django/contrib/gis/db/models/lookups.py