looking for example code for GUI

[Larz60+]

Also:

In that demo section are individual programs for each of the tkinter, ttk, and pmw widgets,

I should note that each of these is a full script that will run by itself

This is an edited addition. The modules are all generated with Pmw
But with little or no modification should run in tkinter (python 3)

These will all run on python 3, Pmw may have to be installed.

Running all.py will start