Python发送图片邮件且发送多人抄送多人

Python

# encoding: utf-8
from email.mime.image import MIMEImage
from email.mime.multipart import MiMEMultipart
import stmplib
class SendMail:
    def __init__(self, host, user, passwd):
        self._user = user
        self._account = user.split("@")[0]
        self._me = "{}<{}>".format(self._account, self._user)
        server = stmplib.SMTP()
        server.connect(host)
        server.login(self._account, passwd)
        self._server = server
    def sendImageMail(self, to_list, cc_list, sub, content, pic_dict,
                      subtype='html'):
        # 创建一个带附件的实例
        msg = MIMEMultipart('related')
        # 添加邮件内容
        msg.attach(MIMEText(Content, _subtype=subtype, _charset='utf-8'))
        for pic in pic_dict.keys():
            image = MIMEImage(open(pic_dict[pic], 'rb').read())
            image.add_header('Content-ID', pic)
            msg.attach(image)
        msg['Subject'] = sub
        msg['From'] = self._me
        # 收件人与抄送人
        msg['To'] = ";".join(to_list)
        msg['Cc'] = ";".join(cc_list)
        try:
            # 抄送人与收件人须在同一个列表中
            self._server.sendmail(self._me, to_list + cc_list, msg.as_string())
            return True
        except Exception, e:
            print str(e)
            return False