s= 'hi'


for i in range(0,20):
    s=base64.b64encode(s)


print s


s= 'hi'


for x in range(0, 20):
    s=s.encode('base64')


print s



왜 결과가 다르냐 ㅠㅠㅠㅠㅠㅠㅠㅠ