diy2.py

import random
key="八国联军偷袭苏轼后集体被希特乐和关羽ko"

message = "诺依，周末一起去看动漫展吧！"
key_message="八国联军偷袭苏轼后集体被希特乐和关羽ko"

    for i in message:
        str1=i
        str2=random.choice(key)
        str3st=random.choice(key)
        text=str1+str2+str3
        key_message=key_message+text
list_message=list(key_message)
list_message.insert(5,noise)
result_message="".join(list_message)
print(key_message)