import random

key="abcdefgh使用编程实现位移替换加密，制作密码机关真是太好玩了哈哈！"

message = "诺依，周末一起去看动漫展吧！"

key_message =""

for i in message :
    str1=i
    str2=random.choice(key)
    str3=random.choice(key)
    test=str1+str2+str3
    key_message=key_message+test

list_message=list(key_message)
list_message.insert(5,noise)
resuit_message="".join(list_message)
print(key_message)