Diez B. Roggisch wrote: > I can't imagine what you're actually after here, but assuming that you > really need this
Hard to explain because I'm still trying to figure out how to do it myself. I'm trying to solve a little puzzle using Python, even though I'm sure it's not necessary. Basically W, X, Y and Z are propositions that are either true or false, and the puzzle lists a few statements such as "Exactly one of X, Y and Z is true", and I'm trying to work out a little algorithm that might test for this kind of stuff. Another thing I'm trying to do is write a function that tests to see if a list contains exactly one true item, and the rest are false (obviously this would have to be a list of boolean values, I guess). I'm sure this isn't a handy utility, but I enjoy figuring out how to implement it. -- http://mail.python.org/mailman/listinfo/python-list
