headcounts is a simple web app for displaying (reasonably) up-to-date enrollments in courses at Minnesota State University Moorhead for the current semester. You can check it out here: http://headcounts.herokuapp.com. It is deployed on heroku but is based on the anaconda python distribution and conda, which doesn't use virtualenv. The magic to make this work is the conda buildpack for heroku by Kenneth Reitz (thanks @kennethreitz).