Just updated twill to the latest versions of the wwwsearch/mechanize code. Because twill reaches moderately far into the wwwsearch code, some of the internal changes that John Lee made to mechanize affected the functioning of twill adversely.
Conveniently, my unit tests caught many problems and I could iterate through & fix them one by one.
Dunno what I would have done without 'em... probably slapped a "beta" sticker on it and asked my users to test it for me ;).
Web testing links
Good experiences with Python embedding
For you planetpython people,
Iago Rubio talks about how wonderful Python embedding can be...