  import json
  
  from django import forms
  from django.core.exceptions import ValidationError
  from django.utils import six
  from django.utils.translation import ugettext_lazy as _
  
  __all__ = ['HStoreField']
  
  
 
</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, timezone
 </s> add from django.utils import timezone
  import json
  
  from django import forms
  from django.core.exceptions import ValidationError

  from django.utils.translation import ugettext_lazy as _
  
  __all__ = ['HStoreField']
  
  
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/forms/hstore.py