def link(self, obj):
        if obj.count() > 1:
            return '/feeds/blogs/'
        else:
            try:
                return obj[0].slug % '/feeds/blogs/%s'
            except:
                raise Http404
dataset/ETHPy150Open albatrossandco/brubeck_cms/brubeck/blogs/feeds.py/BlogFeed.link/swapped operands of `%`