[python] base64 모듈을 이용한 custom base64

import string
import base64

STANDARD_ALPHABET = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
CUSTOM_ALPHABET = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ+/'
ENCODE_TRANS = string.maketrans(STANDARD_ALPHABET, CUSTOM_ALPHABET)
DECODE_TRANS = string.maketrans(CUSTOM_ALPHABET, STANDARD_ALPHABET)

def encode(input):
return base64.b64encode(input).translate(ENCODE_TRANS)

def decode(input):
return base64.b64decode(input.translate(DECODE_TRANS))