You will find an IPython notebook here to use. https://github.com/Hart-Challenge/Hart-Learning-Intern/blob/master/Hart-Challenge.ipynb
Please upload your solution to a Secret Gist @ gist.github.com
And send us an email with your link.
If you do not have IPython setup or do not know how use - https://wakari.io/ A web based notebook
Or a Chrome Extension - https://chrome.google.com/webstore/detail/colaboratory-notebook/pianggobfjcgeihlmfhfgkfalopndooo?hl=en-US
If you want to install locally -
https://jupyter-notebook-beginner-guide.readthedocs.org/en/latest/