Recommended python library/framework for local web app?

Question

I want to create a simple LOCAL web app in Python.

The web server and \"back-end\" code will run on the same system (initially, Windows system) as the UI. I doubt it

Answer 1

Bottle is a very lightweight micro-framework. It comes as a single .py-file with no external dependencies, supports routing, a small template-engine and comes with an integrated webserver. It is easy to use and slim.

This sounds like a perfect match to your requirements :)