Hello. While using PyQT for python 2.7, I am trying to accomplish the following:

Basically, programmaticly have certain items with check boxes or groups of radio buttons.
Easily, I have implemented check boxes, yet I have no idea how to add support for radio buttons. My current source is here, which is based on the simpletreemodel example found in the PyQT distribution I am using.
My question is: how would I do this?