Assay
This prototype testing framework was designed to do everything right that I thought other Python testing frameworks did poorly. But I have never had the chance to finish it, so I took the opportunity when speaking at the Puget Sound Programming Python meetup to give a talk about my vision of how a testing framework would operate:
http://rhodesmill.org/brandon/talks/#design-of-assay
To try out this code, either check out the repository and install it directly from your clone:
git clone https://github.com/brandon-rhodes/assay.git
cd assay
pip install -e .
Or you can, without creating your own clone of the repository, install it directly from GitHub:
pip install https://github.com/brandon-rhodes/assay/archive/master.zip