To start, run
pip install -r requirements.txt (ideally from within a clean virtual environment). The code is in doctest format in
steps3.txt, and in plain python code in
blogapp3.py (depending on Python version 2 or 3). If you run
try.py it will give you a python interpreter with hacked
readline support that allows you to follow one line at a time (press tab on a blank line to get the next line).
In order to run in Python3, you currently need to re-run
extract_code.py, which will (amongst other things) generate the Python 3 files from the Python 2 versions.