Assuming you have: Python 3, pip, virtualenv and git installed

$ git clone https://github.com/aswyx/parse_groceries_python.git

$ cd parse_groceries_python

create new virtualenv with python 3, for example:

$ virtualenv --python=/usr/local/bin/python3.4 venv

$ . venv/bin/activate

install requirements

$ pip install -r requirements.txt

$ python parse_groceries.py

$ python -m unittest test_parsing_groceries.py