TypeError in python - missing 1 required positional argument

Question

I\'m stuck here. For n = 5 and k = 3, the answer should be 19. If I set k = 3 separately as a local or global variable and ru

Answer 1

Several solutions, the simplest is:

def wabbits(n, k):
    if n == 1:
        return 1
    elif n == 2:
        return 1
    return wabbits(n-2, k)*k + wabbits(n-1, k)

r = wabbits(5, 3)

However you could encapsulate k using an inner function:

def wabbits(n, k):

    def bunnies(rn):
        if rn == 1:
            return 1
        elif rn == 2:
            return 1
        return bunnies(rn-2)*k + bunnies(rn-1)

    return bunnies(n)

r = wabbits(5, 3)