If you're attempting to access a related model via the generic framework and receive this error there's a couple of fixes.

When you want to render a form but don't want to mess around with rewriting the whole Widget subclass or mangle form rendering consider using django-widget-tweaks

This post and code samples are intended to help you follow along whilst watching Part 1 of Ben Rousch's PyOhio 2013 presentation of Kivy.

By using a pip config file you can avoid re-downloading the same packages repeatedly