Can't get hello world to show up

Hi,

https://teamtreehouse.com/library/django-basics/what-a-view/what-are-urls This is the video I am on

I have done exactly what the video has told me to do:

The only difference is that I have a django environment set up at c9.io

in my url.py I have:

from django.conf.urls import url, include from django.contrib import admin

from . import views

urlpatterns = [ url(r'^admin/', include(admin.site.urls)), url(r'^$', views.hello_world), ]

and in my views.py I have: from django.http import HttpResponse

def hello_world(request): return HttpResponse("Hello World")

However when I save the files and run the server, I still get the default "It work! Congratulations on your first Django-powered page.", instead of Hello World.

I'm not sure what I have to do to make this work!