old_contents: from django.conf.urls import url
  
  from .views import BlogListView, BlogDetailView, LatestEntriesFeed
  
  urlpatterns = [
                  url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-_\w]+)/$',
                      BlogDetailView.as_view(),
                      name='blog_detail',
                      ),
                  url(r'^archive/$',
                      BlogListView.as_view(
                          template_name="simpleblog/post_archive_page.html",
                          page_template="simpleblog/post_archive_page.html"),
                          name="blog_archive"),
                  url(r'^latest/feed/$', LatestEntriesFeed()),
                  url(r'^$', BlogListView.as_view(), name='blog_index'),
              ]
  
new_contents: from django.conf.urls import url
  
  from .views import BlogListView, BlogDetailView, LatestEntriesFeed
  
  urlpatterns = [
                  url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-_\w]+)/$',
                      BlogDetailView.as_view(),
                      name='blog_detail',
                      ),
                  url(r'^archive/$',
                      BlogListView.as_view(
                          template_name="simpleblog/post_archive.html",
                          page_template="simpleblog/post_archive_page.html"),
                          name="blog_archive"),
                  url(r'^latest/feed/$', LatestEntriesFeed()),
                  url(r'^$', BlogListView.as_view(), name='blog_index'),
              ]
  
subject: Fix wrong template_name