Wow, what an impressive turnout ! Thanks a lot, rantingrick, CM and Herbert, for the fast answers, useful tips and especially the sample code !
Beats starting from a blank page, with a big stick, and will certainly set me on my way much faster... networkx does seem a bit over the top for my simple goal, but both the Tk (I always forget Tk !) and Matplotlib approaches seem to fit the KISS principle just fine... on to the tinkering now :-) Again, thanks to all ! fp -- http://mail.python.org/mailman/listinfo/python-list
