old_contents: # -*- coding: utf-8 -*-
  from django.utils.translation import ugettext_lazy as _
  
  
  
  trans_app_label = _('Article')
  
new_contents: # -*- coding: utf-8 -*-
  from django.utils.translation import ugettext_lazy as _
  
  
  trans_app_label = _(u'Article')
  
subject: set trans app label article to unicode