base64 加密解密

1. str <=> bytes

str ⇒ bytes：bytes(s, encoding='utf8')
bytes ⇒ str：str(b, encoding='utf-8')

# 此外还可通过编码解码的形式对二者进行转换
str 编码成 bytes 格式：str.encode(s)
bytes 格式编码成 str 类型：bytes.decode(b)

2. str base64加解密

import base64

pwd = '123456'
pwd_encode = base64.b64encode(pwd.encode('utf-8')).decode("utf-8")
print(pwd_encode) 


pwd_decode = base64.b64decode(pwd_encode.encode('utf-8')).decode("utf-8")
print(pwd_decode) # 代码