<snip> > > I think it's harder for some people to see why the > > assert j not in seen > > must be true, although that's obvious after just a few hours' thought <wink>.
That's where you get to leave comments like: #it follows logically that assert j not in seen or #by implication assert j not in seen just to really frustrate the guy reading your code. Peace Bill Mill bill.mill at gmail.com -- http://mail.python.org/mailman/listinfo/python-list
