Running Python Demo on the Web?

[Python Fiddle Admin]

Python has been ported to the web browser at pythonfiddle.com. Python
Fiddle can import snippets of code that you are reading on a web page
and run them in the browser. It supports a few popular libraries.

Another common usage is to post code on the site to allow other people
to play around with it. Also, it can be used to demonstrate a working
program.