old_contents: from django.conf.urls import patterns, include
  
  
  urlpatterns = patterns(
      (r'^jmbo/', include('jmbo.urls')),
      (r'^comments/', include('django.contrib.comments.urls')),
      (r'^post/', include('post.urls')),
  )
  
new_contents: from django.conf.urls import patterns, include
  
  
  urlpatterns = patterns(
      '',
      (r'^jmbo/', include('jmbo.urls')),
      (r'^comments/', include('django.contrib.comments.urls')),
      (r'^post/', include('post.urls')),
  )
  
subject: Use correct url pattern format