我想了解递归过程？

Question

houses = ["Shaah's house", "Joseph's house", "Kyle's house", "Stan's house"]def deliver_presents_recursively(houses):    # Worker elf doing his work    if len(houses) == 1:        house = houses[0]        print("Delivering presents to", house)    else:        mid = len(houses) // 2        first_half = houses[:mid]        second_half = houses[mid:]        # Divides his work among two elves        deliver_presents_recursively(first_half)        deliver_presents_recursively(second_half)交付呈现_递归（房屋）