example code sought

[Sean McIlroy]

There's something quite simple I'd like to do, but I'm hampered by
lack of knowledge regarding Tkinter. If someone could help me out with
a snippet of maximally-simple code showing, in general terms, how to
do this, that would be really great. What I want to do is simply to
move a shape around on the screen using the mouse. I've looked at
Tkdnd.py but I can't seem to extract what I need from the more
involved stuff in there.

Peace,
STM