On Jul 15, 5:07 am, "Dr. Phillip M. Feldman" <pfeld...@verizon.net> wrote: > I appreciate the effort that people have made, but I'm not impressed with any > of the answers. For one thing, xor should be able to accept an arbitrary > number of input arguments (not just two), and should return True if and only > if the number of input arguments that evaluate to True is odd.
Well, that's not exactly what you originally asked for. But it's still a one-liner: def xor(*args): return bool(sum(map(bool, args)) % 2) or perhaps def xor(*args): return bool(len(filter(None, args)) & 1) > Here's my code: > > def xor(*args): > """xor accepts an arbitrary number of input arguments, returning True > if and only if bool() evaluates to True for an odd number of the input > arguments.""" > > result= False > > for arg in args: > if bool(arg): result= not result It's more idiomatic to say "if arg: ..." rather than "if bool (arg): ...". > > return result Mark -- http://mail.python.org/mailman/listinfo/python-list
