python发送邮件

import smtplib
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
from email.header import Header

mail_host = "smtp.163.com"  # 设置服务器
mail_user = "17731456887@163.com"  # 用户名
mail_pass = "python123"  # 口令

sender = '17731456887@163.com'
receivers = ['1758152342@qq.com','17731456887@163.com']

# 创建一个带附件的实例
message = MIMEMultipart()
message['From'] = '17731456887@163.com'
message['To'] = '1758152342@qq.com'
subject = 'Python SMTP 邮件'
message['Subject'] = Header(subject, 'utf-8')

# 邮件正文内容
message.attach(MIMEText('这是菜鸟教程Python 邮件发送……', 'plain', 'utf-8'))

# 构造附件1，传送当前目录下的 test.txt 文件
att1 = MIMEText(open(r'safe.doc', 'rb').read(), 'base64', 'utf-8')
att1["Content-Type"] = 'application/octet-stream'
# 这里的filename可以任意写，写什么名字，邮件中显示什么名字
att1["Content-Disposition"] = 'attachment; filename="{0}"'.format('safe.doc')
message.attach(att1)

# # 构造附件2，传送当前目录下的 runoob.txt 文件
# att2 = MIMEText(open('runoob.txt', 'rb').read(), 'base64', 'utf-8')
# att2["Content-Type"] = 'application/octet-stream'
# att2["Content-Disposition"] = 'attachment; filename="runoob.txt"'
# message.attach(att2)

try:
    smtpObj = smtplib.SMTP()
    smtpObj.connect(mail_host, 25)    # 25 为 SMTP 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: 无法发送邮件"