python调用smtplib模块发送邮件

#!/usr/bin/env python
#coding: utf-8
import smtplib
from email.mime.text import MIMEText
from email.header import Header
sender = 'sasamony@126.com'
#receiver = '22337736@qq.com'
receiver = 'zhaoyu.sun@creditcloud.com'
subject = 'python email test'
smtpserver = 'smtp.126.com'
username = 'sasamony@126.com'
password = 'teaforme80'

msg = MIMEText('你好','plain','utf-8')#中文需参数‘utf-8’，单字节字符不需要
msg['Subject'] = Header(subject, 'utf-8')

smtp = smtplib.SMTP()
smtp.connect('smtp.126.com')
smtp.ehlo()
smtp.starttls()
smtp.ehlo()
smtp.set_debuglevel(1)
smtp.login(username, password)
#send message
smtp.sendmail(sender, receiver, msg.as_string())
#quit()
smtp.quit()