How to use the puput.models.EntryPage.objects.get function in puput

def post(self, request, entry_page_id, *args, **kwargs):
        try:
            entry_page = EntryPage.objects.get(pk=entry_page_id)
            blog_page = entry_page.blog_page
            num_comments = 0
            if blog_page.disqus_api_secret:
                num_comments = get_num_comments_with_disqus(blog_page, entry_page)
            entry_page.num_comments = num_comments
            entry_page.save()
            return HttpResponse()
        except EntryPage.DoesNotExist:
            raise Http404

creation_date = timezone.make_aware(creation_date, pytz.timezone('GMT'))
        content = content.decode('UTF-8')
        excerpt = strip_tags(item_node.find(u'{{{0:s}excerpt/}}encoded'.format(self.WP_NS)).text or '')
        if not excerpt and content:
            excerpt = Truncator(content).words(50)
        slug = slugify(title)[:255] or u'post-{0:s}'.format(item_node.find(u'{{{0:s}}}post_id'.format(self.WP_NS)).text)
        creator = item_node.find('{http://purl.org/dc/elements/1.1/}creator').text
        try:
            entry_date = datetime.strptime(item_node.find(u'{{{0:s}}}post_date_gmt'.format(self.WP_NS)).text,
                                           '%Y-%m-%d %H:%M:%S')
        except ValueError:
            entry_date = datetime.strptime(item_node.find(u'{{{0:s}}}post_date'.format(self.WP_NS)).text,
                                           '%Y-%m-%d %H:%M:%S')
        # Create page
        try:
            page = EntryPage.objects.get(slug=slug)
        except EntryPage.DoesNotExist:
            page = EntryPage(
                title=title,
                body=content,
                excerpt=strip_tags(excerpt),
                slug=slug,
                go_live_at=entry_date,
                first_published_at=creation_date,
                date=creation_date,
                owner=self.authors.get(creator),
                seo_title=title,
                search_description=excerpt,
                live=item_node.find(u'{{{0:s}}}status'.format(self.WP_NS)).text == 'publish')
            self.blogpage.add_child(instance=page)
            revision = self.blogpage.save_revision()
            revision.publish()