It's fully functional

The script works, it's only command line and you have to run it manually, but it works as intended.
setup.py will create necessary folders and files required.
add_url.py is the module in charge of adding, deleting and modifying the files and fields needed for the script.
main.py is the one that compares websites with the ones already stored, if there is any difference it will open the website in your default browser.
After adding a website, you only need to run main.py