diy4.py

import random
key="abcdefgh使用python实现简单的位移替换加密，制作密码机关真是太好玩了哈哈哈！"
message = "诺依，周末一起去看动漫展吧！"
key_message="" 
noise="!@#$%%$#@$%卅襩o襩o紶伱鎷孖孖儍闬亿回归和个 给火箭股份发 的"
for i in range(len(message)):
    str1=message[i]
    str2=random.choice(key)
    str3=random.choice(key)
    str_=str1+str2+str3
    key_message=key_message+str_
list_message=list(key_message)
index=random.randint(0,len(key_message))
list_message.insert(index,noise)
result_message="".join(list_message)
print(result_message)