old_contents: # -*- coding: utf-8 -*-
  
  from django.conf.urls import include, url
  from django.contrib import admin
  
  from . import views
  
  urlpatterns = [
      url(r'^$', views.PostListView.as_view(), name='list'),
  ]
  
new_contents: # -*- coding: utf-8 -*-
  
  from django.conf.urls import url
  
  from . import views
  
  urlpatterns = [
      url(r'^$', views.PostListView.as_view(), name='list'),
  ]
  
subject: remove imports não utilizados