A version of this article appears in print on March 27, 2023, Section B, Page 1 of the New York edition with the headline: Twitter Says Source Code Was Leaked on the Internet.

View the page source Another easy way to check the technologies a website is built with is to view its source code in the browser. To view the raw HTML used to create a website, just right-click on ...

We’ll look at three Python web frameworks that follow this paradigm, allowing you to describe front-end code (HTML, CSS, and JavaScript) using back-end Python code.