Python扫描邮件主题，并打印

import imaplib
import email
from email.header import decode_header
import datetime

if __name__ == '__main__':
    username = 'XXX@XXX'
    pw = 'XXXX'
    imapadd = 'imap.XX.XX'
    today = datetime.datetime.now().strftime('%d-%b-%Y')
    conn = imaplib.IMAP4(imapadd)
    conn.login(username,pw)
    conn.select()
    resp, item = conn.search(None, 'ON %s'%today)
    print('Today`s total mail is [%s],and Subject is here:'%len(item[0].split()))
    for i in range(0,len(item[0].split())):
        resp,mailData = conn.fetch(item[0].split()[i],'(RFC822)')
        mailText = mailData[0][1]
        msg = email.message_from_bytes(mailText)
        subject = msg['Subject']
        subdecode = decode_header(subject)
        if subdecode[0][1] == None:
            print(subdecode[0][0])
        else:
            print(subdecode[0][0].decode(subdecode[0][1]))
    conn.close()
    conn.logout()