import random
key = "abcdefg"
message = "诺伊，周末一起去看画展吧！"
key_message = ""
noise = "por:@#$%^&"
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(resolt_message)