tkinter: drop-down widget

[Alex Hunsley]

Can anyone recommend some code for creating drop-down menus in tkinter?
To be absolutely clear, here's an example of a drop-down:

http://www.google.co.uk/preferences?hl=en
(see the language selection widget)

I've found the odd bit of code here and there, such as:
http://infohost.nmt.edu/tcc/cgi/pre.cgi?file=/u/www/docs/tcc/help/lang/python/mapping/dropdown.py

alex