3.1. 함수.재귀적용법

>>> def hap(a, b):
...   print(a + b)
...

>>> def gop(a, b):
...   print(a * b)
...

>>> def hap_gop(a, b):
...   hap(a, b)
...   gop(a, b)
...

>>> hap_gop(3,4)

def countdown(n):
    if n == 0:
        print("Blastoff!")
    else:
        print(n)
        countdown(n-1) #재귀적 호출

>>> countdown(3)
3
2
1
Blastoff!