Python smtplib发送邮件 包含文本、附件、图片

#!/usr/bin/env python
#coding: utf-8

'''
FuncName: smtplib_email.py
Desc: 使用smtplib发送邮件
Date: 2016-04-11 14:00
Author: johnny
'''

import smtplib
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.base import MIMEBase
from email.utils import COMMASPACE,formatdate
from email import encoders

def send_email_text(sender,receiver,host,subject,text,filename):

assert type(receiver) == list

msg = MIMEMultipart()
msg['From'] = sender
msg['To'] = COMMASPACE.join(receiver)
msg['Subject'] = subject
msg['Date'] = formatdate(localtime=True)
msg.attach(MIMEText(text))                 #邮件正文内容

for file in filename:                      #邮件附件
att = MIMEBase('application', 'octet-stream')
att.set_payload(open(file, 'rb').read())
encoders.encode_base64(att)
if file.endswith('.html'):             # 若不加限定，jpg、html等格式附件是bin格式的
att.add_header('Content-Disposition', 'attachment; filename="今日测试结果.html"')          # 强制命名，名称未成功格式化，如果可以解决请联系我
elif file.endswith('.jpg') or file.endswith('.png') :
att.add_header('Content-Disposition', 'attachment; filename="pic.jpg"')
else:
att.add_header('Content-Disposition', 'attachment; filename="%s"' % file)
msg.attach(att)

smtp = smtplib.SMTP(host)
smtp.ehlo()
smtp.starttls()
smtp.ehlo()
smtp.login(username,password)
smtp.sendmail(sender,receiver, msg.as_string())
smtp.close()

if __name__=="__main__":
sender = 'qqq@163.com'
receiver = ['www@qq.com']
subject = "测试"
text = "johnny'lab test"
filename = [u'测试报告.html','123.txt',u'获取的信息.jpg']
host = 'smtp.163.com'
username =  'qqq@163.com'
password =  'qqq'
send_email_text(sender,receiver,host,subject,text,filename)