Great! I have never thought about using optional parameters in lambdas. A useful new technique for golfing. I would use all() instead of the "== None" trick an

Great! I have never thought about using optional parameters in lambdas. A useful new technique for golfing. I would use all() instead of the "== None" trick and __import__(). http://hastebin.com/nemiyukenu.python http://hastebin.com/nemiyukenu.python