diy3.py

import random
key="nbfgjhdjrsuhgjkdnhvudrshrgidhgufnbvuydfhb"
message="grjtjhgu"
key_mess=""
for i in message:
    str1=i
    str2=random.choice(key)
    str3=random.choice(key)
    text=str1+str2+str3
    key_mess=key_mess+text:
print(key_mess)