python 发送邮件

# coding=utf-8

import smtplib
from time import sleep
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart

def send_email(**param):
    '''
    发送邮件
    author:cdq
    :param param:{"username":"","password":"","from_addr":"","to_addr":"","smtpserver":"","subject":"","file_path":""}
    :file_path=文件路径
    :return:
    '''
    error = ""
    flag = True
    try:
        # from conf_isms.adconf import local_host_ip
        if not param['is_send']:
            flag = False
        msg = MIMEMultipart()

        content = '<span>您好：</span><br><span style="text-indent: 2em;">' 
                  '&nbsp;&nbsp;&nbsp;&nbsp;数据报表已发至邮箱，请您查看</span><br><span>' 
                  '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;祝您生活愉快！<span>'
        body = MIMEText(content, _subtype="html", _charset="utf-8")
        msg.attach(body)
        if isinstance(param['file_path'], list):
            for m in param['file_path']:
                att = MIMEText(open(m, 'rb').read(), 'base64', 'utf-8')
                file_name = m.split('/')[-1]
                att["Content-Type"] = 'application/octet-stream'
                att["Content-Disposition"] = 'attachment; filename="%s"' % file_name.encode('gbk')  # 防止下载文件名乱码
                msg.attach(att)
        msg['to'] = ';'.join(param['to_addr'])
        msg['from'] = param['from_addr']
        msg['subject'] = param['subject']
        sm = smtplib.SMTP(param['smtpserver'], port=25)
        # sm.set_debuglevel(1)
        sm.ehlo()
        sm.starttls()
        sm.ehlo()
        sm.login(param['username'], param['password'])
        sm.sendmail(param['from_addr'], param['to_addr'], msg.as_string())
        sleep(5)
        sm.quit()
        print "%s  send successfully" % param['file_path']
        flag = True
    except Exception, ex:
        traceback.print_exc()
        print "send Failed "
        flag = False
        error = "error %s" % str(ex)
    finally:
        return flag, error