import random key = "qwertyuiop" message = "我是傻逼" key_message = "" noise = "*&^%$#@" for i in message: str1 = i str2 = random.choice(key) str3 = 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(result_message)