Download the .py file, double click on it, and it'll then create a .csv file at the same location as the .py file. The stats will be from the last time the game was ran through Steam, so if you want up to date states open the game first and then run it.
The CSV file will contain how many boosters you currently have, how many boosters you've gained in totality, how many variants you have (excluding default), and how many splits you've done for a specific card. You can then use Excel (or similar software) to do the sorting.