title: QListView/QListWidget with custom items and custom item widgets
body: <p>I'm writing a PyQt application and am having some trouble creating a custom list view.  I'd like the list to contain arbitrary widgets (one custom widget in particular). How would I go about this?</p>
  
  <p>It seems that the alternative would be to create a table or grid view wrapped in a scrollbar. However, I'd like to be able to take advantage of the model/view approach as well as the nesting (tree-view) support the built-ins handle.</p>
  
  <p>To clarify, the custom widgets are interactive (contain buttons), so the solution requires more than painting a widget.</p>