PyScript lets you run Python scripts right in the browser, side by side with JavaScript, with two-way interaction between your code and the web page.

Here are some free Python file viewer and Python file editor software to help you open PY files on Windows 11/10 PC.

A <py-repl> tag inserts a REPL block that allows you to input and execute code, and a <py-env> tag functions like the requirements.txt file in a repository to list needed packages.