Turn (python related) github repos into deb files (using fpm) and put them into a repo.

Look at this repo to see how it deploys itself (meta!)

Create a .deploy.yaml file in your repository along the lines of ::

buildscript: buildsomething.sh
preinstall: preinstall.sh
postinstall: syncdb.sh
nginx:
 - mysite/mysite-nginx.conf
supervisor:
 - mysite/mysite-supervisor.conf
pip:
 - gunicorn
 - django
dependencies:
 - nginx

Most of these are optional of course. Whatever your build script does it must put the result into ./build/

Then connect it to your CI system somehow