Sippycup

An in-browser Flask sandbox in a static web page

Try it out at sippycup.app!

Flask-lite

Sippycup uses Pyodide to run Python code in the browser. Currently (Feb 2023), Pyodide cannot run a Flask server because it has no implementation of sockets, so Sippycup is an attempt to make a "training wheels" version of Flask that runs in the browser. Sippycup is primarily a proof-of-concept at this point, so odd behaviors should be expected, and logging any issues that you run into is greatly appreciated.