diy3.py

import random

key = "fakrfhayufrgyary8qtriuatr87asfdghjadsha7w46736573wghft948"
k_message=""
message = "诺依，周末一起去看动漫展吧！"
for i in message:
    str1=i
    str2=random.choice(key)
    str3=random.choice(key)
    text=str1+str2+str3
    k_message=k_message+text
print(k_message)