这是密码

import imaplib
mail.select('"[Gmail]/Sent Mail"')
typ,messageIds = mail.search(None,"SEEN")
messageIdsString = str(messageIds[0],encoding='utf-8')
listofmessages = messageIdsString.split(" ")
nbr = len(listofmessages)
if len(listofmessages)== 0:
    print("You Have No Mails On Inbox")
elif len(listofmessages)== 0:
    print("You Have No Mails On Spam")
else :
    print("You Have ",nbr,"New Emails Inbox")

如果有人能帮忙，我不知道该怎么办