A small live editor for jinja2 templates, inspired by
http://stackoverflow.com/q/20145709/492620. The OP posted a repository with a flask application that does that, I could not resist and built it with bottle.py.
$ pip install bottle jinja2
$ python app.py
Careful this application now listens to all incoming requests on 0.0.0.0.
You can run with Docker using:
$ make build
$ make run