def sendmail(login={},mail={}):     '''\     @param login login['user'] login['passwd']     @param mail mail['to_addr'] mail['subject'] mail['content'] mail['attach']     '''     from datetime import datetime     from base64 import b64encode     import smtplib, mimetypes     from email.mime.text import MIMEText     from email.mime.multipart import MIMEMultipart     from email.mime.image import MIMEImage     user_info = login['user'].split('@')     mail_configure = {}     mail_configure['mail_encoding'] = 'utf-8'     mail_configure['mail_supplier'] = user_info[1]     mail_configure['from_addr'] = login['user']     mail_configure['server_host'] = 'smtp.%s' % mail_configure['mail_supplier']     error = None     try:         email = MIMEMultipart()         email['from'] = mail_configure['from_addr']         email['to'] = mail['to_addr']         email['subject'] = '=?%s?B?%s?=' % (mail_configure['mail_encoding'],b64encode(mail['subject']))         email_content = MIMEText(mail['content'], _charset=mail_configure['mail_encoding'])         email.attach(email_content)         if 'attach' in mail:             for i in mail['attach']:                 ctype, encoding = mimetypes.guess_type(i)                 if ctype is None or not encoding is None:                     ctype = 'application/octet-stream'                 maintype, subtype = ctype.split('/', 1)                 att = MIMEImage((lambda f: (f.read(), f.close()))(open(i, 'rb'))[0], _subtype = subtype)                 att.add_header('Content-Disposition', 'attachment', filename = i)                 email.attach(att)         smtp = smtplib.SMTP()         smtp.connect(mail_configure['server_host'])         smtp.login(user_info[0], login['passwd'])         smtp.sendmail(mail_configure['from_addr'], mail['to_addr'], email.as_string())         smtp.quit()     except Exception as e:         error = e     return (mail_configure['from_addr'], mail['to_addr'], error)

def t21():     login = {         'user':'ak43@sina.com',         'passwd':'hello@d'     }     mail = {         'to_addr':'ak32@sina.com;ak32@21cn.com',         'subject':'不带附件的测试邮件',         'content':'''\         sz002718,友邦吊顶         sz002719,麦趣尔         sz002722,金轮股份         ''',     }     print sendmail(login, mail)     login = {         'user':'hellot@sina.com',         'passwd':'hello#world'     }     mail = {         'to_addr':'tom12@sina.com;tom12@21cn.com',         'subject':'带附件的测试邮件',         'content':'''\         sz002718,友邦吊顶         sz002719,麦趣尔         sz002722,金轮股份         ''',         'attach':['e:/a/a.txt']     }     print sendmail(login, mail)