def fib(num): if num == 0: return 0 elif num == 1 or num == 2: return 1 else: return fib(num-1) + fib(num-2) print("Hello World!") sample1 = 7 result1 = fib(sample1) print(f"result1: {result1}") assert(result1 == 13) print("good bye world")