import re with open('public/index.html', 'r', encoding='utf-8') as f: html = f.read() # Add timestamp version query to css and js html = html.replace('href="css/style.css"', 'href="css/style.css?v=20261010_1955"') html = html.replace('src="js/app.js"', 'src="js/app.js?v=20261010_1955"') with open('public/index.html', 'w', encoding='utf-8') as f: f.write(html)