I found your object-oriented approach, while admirable, a little muddled. So rather than modify your code, I simply took the paragraph you wrote describing the scenario and wrote my own.[1]
Instead of having the Controller query the Subject (not exactly plausible), I had it wait for a signal (threading.Event) as set by the Subject. You could also have it query a queue, as that is a generally accepted and thread-safe object to use, but for this purpose I chose an event and a global variable. (I'm aware that some would look down on this, but I didn't see a problem, as it was only modified by one thread amd printed by the other.) Daniel Bickett NOTES: [1] Google killed my whitespace (as spaces _and_ tabs...) in the previews, so I pasted it on Nopaste: http://rafb.net/paste/results/KilM6t70.html -- http://mail.python.org/mailman/listinfo/python-list
