# encoding: utf-8import loggingimport smtplibfrom email.mime.text import MIMETextimport email.utilsfrom datetime import datetime_logger = logging.getLogger('utils.mailclient')class MailClient(object):  def __init__(self, host, port, user, pwd=''):    self._host = host    self._port = port    self._user = user    self._pwd = pwd    self._smtp_server = None    self._debug = False    self._keepalive = True  def set_keepalive(self, keepalive):    self._keepalive = keepalive  def set_debug(self, debug):    self._debug = debug    if self._smtp_server is not None:      self._smtp_server.set_debuglevel(self._debug)  def _connect(self):    if self._smtp_server is None:      _smtp_server = smtplib.SMTP(self._host, self._port)      _smtp_server.ehlo()      _smtp_server.starttls()      _smtp_server.set_debuglevel(self._debug)      if self._pwd:        _smtp_server.login(self._user, self._pwd)      self._smtp_server = _smtp_server    return self._smtp_server  def _dispose(self):    if self._smtp_server is not None:      self._smtp_server.quit()      self._smtp_server = None  def send(self, to_addrs, subject, content, isdispose=True):    _smtp_server = self._connect()    if not isinstance(to_addrs, list):      to_addrs = [to_addrs]    _msg = MIMEText(content, 'html', 'utf-8')    _msg['Subject'] = subject    _msg['From'] = self._user    _msg['To'] = '; '.join(to_addrs)    _msg['Date'] = datetime.now().strftime('%Y-%d-%m %H:%M:%S')    _smtp_server.sendmail(self._user, to_addrs, _msg.as_string())    isdispose and (not self._keepalive) and self._dispose()  def send_mails(self, mails):    _smtp_server = self._connect()    for mail in mails:      self._send_mail(mail.get('to'), mail.get('subject'), mail.get('content'), False)    (not self._keepalive) and self._dispose()  def close(self):    self._dispose()if __name__ == '__main__':  logging.basicConfig(level=logging.DEBUG,            format='%(asctime)s %(name)s %(levelname)s:%(message)s',            datefmt='%Y-%m-%d %H:%M:%S')  import time  s = MailClient('smtp.qq.com', 587, '10010@qq.com', '授權碼') #  注意，此處端口要用587,465端口是ssl使用的。  s.set_keepalive(False)  s.set_debug(True)  st = time.time()  s.send('收信人郵箱地址', '測試', '測試郵件 From QQ') #要發送的賬號、標題、內容  print(time.time() - st)