"John Salerno" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > 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.
X+Y+Z == 1 # or bool(X)... if not booleam > 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. Use sum(). Being able to count true values by adding is a reason bool is a subclass of int. Terry Jan Reedy -- http://mail.python.org/mailman/listinfo/python-list
