Ah. Consider what range(4) looks like. It's similar to the sequence: [0, 1, 2, 3]
What happens when you do fib2(0)? :P Here's your program (modified with a correction) on repl.it, for convenience: http://repl.it/O30 _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor