python 发送邮件

# coding: utf-8
import smtplib
from email.mime.text import MIMEText
from email.header import Header

# 文件形式的邮件
def email_file():

    mail_host = "smtp.qq.com"  # 邮箱服务器
    mail_user = "xxxxxxx@qq.com"  # 登录邮箱
    mail_pass = "xxxxx"  # 邮箱密码

    # 发件人（与登录邮箱一致）
    sender = 'xxxxx@qq.com'
    # 接收邮件，可设置为你的QQ邮箱或者其他邮箱
    receivers = ['xxxxx@qq.com']
    '''
    # 发送HTML格式的邮件
    mail_msg ="
        <p>Python 邮件发送测试...</p>
        <p><a href="http://www.runoob.com">这是一个链接</a></p>
    "
    message = MIMEText(mail_msg, 'html', 'utf-8')
      '''
    # 邮件内容
    message = MIMEText('这个是 邮件发送测试...', 'plain', 'utf-8')
    message['From'] = sender
    message['To'] = ",".join(receivers)
    # 邮件主题
    subject = 'Python SMTP 邮件测试'
    message['Subject'] = Header(subject, 'utf-8')
    '''
    # 构造附件
    att1 = MIMEText(open('test.txt', 'rb').read(), 'base64', 'utf-8')
    att1["Content-Type"] = 'application/octet-stream'
    att1["Content-Disposition"] = 'attachment; filename="test.txt"'
    message.attach(att1)
    '''
    try:
        smtpObj = smtplib.SMTP_SSL()
        smtpObj.connect(mail_host, 465)  # 465为SMTP_SSL端口号
        smtpObj.login(mail_user, mail_pass)
        smtpObj.sendmail(sender, receivers, message.as_string())
        print "邮件发送成功"
    except smtplib.SMTPException:
        print "Error: 发送邮件失败"

if __name__ == '__main__':
    email_file()