Frameworks tend to be harder to document, but are well worth the
effort spent.
Tkinter
-- Interface to Tcl/Tk for graphical user interfaces;
Fredrik Lundh is working on this one! See An Introduction to
Tkinter at http://www.pythonware.com/library/ for on-line
reference material.
Tkdnd
-- Drag-and-drop support for Tkinter.
test
-- Regression testing framework. This is used for the Python
regression test, but is useful for other Python libraries as well.
This is a package rather than a module.