livecoding is a live coding sketchpad in d3. Code modifications are instantly displayed - no need to refresh your browser. Click a number, adjust its value via the popup slider, and watch your work change on the fly!
100% totally based on Bret Victor's Inventing on Principle talk, which is one of the best I've ever seen. If you watch only one talk this year, make sure it's this one.
git clone https://github.com/gabrielflorit/livecoding.git
cd livecoding
virtualenv --no-site-packages .
. bin/activate
bin/pip install -r requirements.txt
git clone https://github.com/gabrielflorit/livecoding.git
cd livecoding
virtualenv venv
venv\scripts\activate
pip install -r requirements.txt
python runserver.py
Hit http://127.0.0.1:5000 and start coding!