  from django.contrib.postgres.validators import ArrayMaxLengthValidator
  from django.core import checks, exceptions
  from django.db.models import Field, IntegerField, Transform
  from django.db.models.lookups import Exact, In
  from django.utils import six
  from django.utils.translation import ugettext_lazy as _
  
  from ..utils import prefix_validation_error
  from .utils import AttributeSetter
  
 
</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 from django.utils import six
 </s> add 
  from django.contrib.postgres.validators import ArrayMaxLengthValidator
  from django.core import checks, exceptions
  from django.db.models import Field, IntegerField, Transform
  from django.db.models.lookups import Exact, In

  from django.utils.translation import ugettext_lazy as _
  
  from ..utils import prefix_validation_error
  from .utils import AttributeSetter
  
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/postgres/fields/array.py