How to Write Script to Launch a Desktop Application From a Web Browser. Typically, writing programs for Web browsers means that you don't have access to a user's computer and file system.

However, PyScript acts as a wrapper, allowing you to embed Python code directly between py-script tags and have it automatically executed by Pyodide.

Python code is enclosed in the script tag with a type="py" attribute. Note that the code should be formatted according to Python’s conventions for indentation, or it won’t run properly.