old_contents: from django.conf.urls import patterns, url
  
  from gea import views
  
  
  urlpatterns = patterns('',
      url(r'^$', views.index, name='index'),
  )
  
new_contents: from django.conf.urls import patterns, include, url
  
  from gea import views
  
  
  urlpatterns = patterns('',
      url(r'^$', views.index, name='index'),
  )
  
subject: include include