python 发送邮件带附件

#!/usr/bin/python
#-*-coding:utf-8-*-
import sys
import os
import time
import smtplib 
from email.mime.text import MIMEText 
from email.mime.multipart import MIMEMultipart

mail_host="smtp.163.com"
mail_user="xxx"   
mail_pass="xxxxxxx" 
mail_postfix="163.com"
mail_port=25
address = mail_user + "<"+mail_user+"@"+mail_postfix+">"

def send_mail(to_list,sub,content,*args):
    '''
    to_list:发给谁
    sub:主题
    content:内容
    *args:附件列表
    send_mail("[email protected]","sub","content","attachment")
    '''
    msg = MIMEMultipart()
    msg['Subject'] = sub
    msg['From'] = address
    msg['To'] = to_list
    
    #文本内容
    txt = MIMEText(content,_subtype='plain',_charset='utf-8')
    msg.attach(txt)

    #附件(0个或多个)
    for attach in args:   
        if os.path.isfile(attach):
            att = MIMEText(open(attach,'rb').read(),'base64','gb2312')
            att["Content-Type"] = 'application/octet-stream'
            att_name=os.path.basename(attach)
            att["Content-Disposition"] = 'attachment;filename='+att_name
            msg.attach(att)
    
    try:
        s = smtplib.SMTP()
        s.connect(mail_host,mail_port)
        s.login(mail_user+'@'+mail_postfix,mail_pass)
        s.sendmail(address, to_list, msg.as_string())
        s.close()
        print "Send email successfully"
        return True
    except Exception, e:
        print str(e)
        return False

if __name__ == '__main__':   
        send_mail(sys.argv[1],sys.argv[2],sys.argv[3],*sys.argv[4:])