# Python
Using a virtualenv with CodeRunner.app
I'm a big fan of using Virtualenv (and virtualenvwrapper) where possible. It allows you to cleanly manage multiple Python environments. I also occasionally use CodeRunner to test, debug and run standalone scripts. It wasn't immediately clear to me how to make CodeRunner run inside one of my virtualenvs so this post gives a quick outline on how to get the two to work nicely together.