Instead of going to views.py, I want it to go to to a template, robots.txt.
A further update for more recent versions and including mime type from this site:
http://www.techstricks.com/adding-robots-txt-to-your-django-project/
from django.conf.urls import url
from django.views.generic import TemplateView
urlpatterns = [
#... your project urls
url(r'^robots.txt$', TemplateView.as_view(template_name="robots.txt", content_type="text/plain"), name="robots_file")
]