diy4.py

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！"
s=""
for i in message:
    a=i
    b=random.choice(key)
    c=random.choice(key)
    d=a+b+c
    s=s+d
p=list(s)
a='fgjjhjghvm'
r=random.randint(0,len(p))
p.insert(r,a)
z="".join(p)
print(z)