def __init__(self, title, request, 
                group_slug=None, bridge=None,
                article_qs=ALL_ARTICLES, changes_qs=ALL_CHANGES,
                extra_context=None,
                title_template = u'feeds/history_title.html',
                description_template = u'feeds/history_description.html',
                *args, **kw):

        if  group_slug is not None:
            try:
                group = bridge.get_group(group_slug)
            except __HOLE__:
                raise Http404
            self.article_qs = article_qs.filter(content_type=get_ct(group),
                                           object_id=group.id)
        else:
            self.article_qs = article_qs

        self.title_template = get_template(title_template)
        self.description_template = get_template(description_template)
        super(AtomArticleHistoryFeed, self).__init__('', request)
dataset/ETHPy150Open brosner/django-wikiapp/wiki/feeds.py/AtomArticleHistoryFeed.__init__