changes.py

def check_changes():
    # HTML from website
    req = requests.get('https://grossdomesticproduct.com')
    web_text = req.text

    # Saved HTML
    try:
        file = open('grossdomesticproduct.html')
        file_text = file.read()
        file.close()
    except FileNotFoundError:
        file_text = '' # file doesn't exist yet, no problem

    if web_text != file_text:
        # Update file with changes
        file = open('grossdomesticproduct.html','w+')
        file.write(web_text)
        file.close()
        return True, 'BANKSY! ✨ grossdomesticproduct.com has changed!'

    return False, 'No changes to grossdomesticproduct.com. 😪'