django utf-8 normalization

Приветствую

Я хочу slugify/normalize utf8 string however I get

# -*- coding: utf-8 -*-   
from django.template.defaultfilters import slugify
print slugify( unicode("şşşşüüüüççç") )

and get result as "ssssuuuccc", however I get UnicodeDecodeError 'ascii' codec cant decode .... ошибка.