done

app_homepage/urls.py

+from django.conf.urls import url
+from app_homepage import views
+
+urlpatterns = [
+    url(r'^new$', views.new_list, name='new_list'),
+    url(r'^(\d+)/$', views.view_list, name='view_list'),
+    url(r'^(\d+)/add_item$', views.add_item, name='add_item'),
+]
\ No newline at end of file

project01_homepage/urls.py

@@ -15,12 +15,11 @@ Including another URLconf
 """
 from django.contrib import admin
 from django.urls import path
-from django.conf.urls import url
-from app_homepage import views
+from django.conf.urls import url, include
+from app_homepage import views as list_views
+from app_homepage import urls as list_urls
 
 urlpatterns = [
-    url(r'^$', views.home_page, name='home'),
-    url(r'^lists/new$', views.new_list, name='new_list'),
-    url(r'^lists/(\d+)/$', views.view_list, name='view_list'),
-    url(r'^lists/(\d+)/add_item$', views.add_item, name='add_item'),
+    url(r'^$', list_views.home_page, name='home'),
+    url(r'^lists/', include(list_urls)),  
 ]
\ No newline at end of file