old_contents: from django.conf.urls import url
  
  from . import views
  
  app_name = 'news'
  urlpatterns = [
      url(r'^$', views.IndexView.as_view(), name='index'),
      url(r'^(?P<year>\d{4})/(?P<month>\d{2})/(?P<day>\d{2})/(?P<slug>[-\w]+)/$',
          views.ArticleView.as_view(), name='article'),
  ]
  
new_contents: from django.urls import include, path
  
  from . import views
  
  app_name = 'news'
  urlpatterns = [
      path('', views.IndexView.as_view(), name='index'),
      path('<int:year>/<int:month>/<int:day>/<slug:slug>/', views.ArticleView.as_view(), name='article'),
  ]
  
subject: Move news urlpatterns to Django 2.0 preferred method