python实现邮件发送功能

# 带附件的邮件
import smtplib
from email.mime.multipart import MIMEMultipart # python2.4及之前版本该模块不是这样调用的，而是email.MIMEMultipart.MIMEMultipart(),下同
from email.mime.text import MIMEText
from email.utils import parseaddr,formataddr
from email.header import Header

sender = '123@qq.com'#发件人地址
receiver = ['xx@dd.com','123@qq.com']#收件人地址
smtpserver = 'smtp.qq.com'#邮件服务器
username = '123'#用户名
password = 'xxx'#密码  # qq邮箱打开，点击账户，中间偏下位置打开smtp服务器时会自动生成
smtp = smtplib.SMTP()

def _format_addr(s):
    name, addr = parseaddr(s)
    return formataddr((Header(name, 'utf-8').encode(), addr.encode('utf-8') if isinstance(addr, unicode) else addr))

def send_email(msg,file_name):
    msgRoot = MIMEMultipart('related')
    # msgRoot['To'] = _format_addr(u'%s' % receiver)
    msgRoot['to'] = '%s' % receiver
    msgRoot['Subject'] = '反欺诈数据报' #邮件标题，这里我把标题设成了你所发的附件名
    msgText = MIMEText('%s'%msg,'html','utf-8')#你所发的文字信息将以html形式呈现
    msgRoot.attach(msgText)
    for fs in file_name.split(','):
        att = MIMEText(open(r'E:\%s'%fs, 'rb').read(), 'base64', 'utf-8')#添加附件
        att["Content-Type"] = 'application/octet-stream'
        att["Content-Disposition"] = 'attachment; filename="%s"'%fs
        msgRoot.attach(att)
    while 1:#持续尝试发送，直到发送成功
        try:
            smtp.sendmail(sender, receiver, msgRoot.as_string())#发送邮件
            break
        except:
            try:
                smtp.connect(smtpserver)#连接至邮件服务器
                smtp.login(username, password)#登录邮件服务器
            except:
                print "failed to login to smtp server"#登录失败

if __name__ == "__main__":
    MSG="hello python "#要发送的文字
    FILE="cust_id.csv,test.csv"#要发送的文件
    send_email(MSG,FILE)
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