#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import base64

s = base64.b64encode('在Python中使用BASE 64编码'.encode('utf-8'))
print(s)
d = base64.b64decode(s).decode('utf-8')
print(d)

s = base64.urlsafe_b64encode('在Python中使用BASE 64编码'.encode('utf-8'))
print(s)
d = base64.urlsafe_b64decode(s).decode('utf-8')
print(d)