发送邮件,可带附件,可群发，发送邮件群发,# 这是发布本信息时的版

发送邮件,可带附件,可群发，发送邮件群发,# 这是发布本信息时的版

# 这是发布本信息时的版本,请以github上的为主要参考def send_email(login=None, mail=None, images=None, attachments=None, use_ssl=None):    smtpserver = login.get("smtpserver")    username = login.get("username")    password = login.get("password")    email_type = mail.get('email_type')    From = mail.get('from')    To = mail.get('to')    Subject = mail.get('subject')    content = mail.get('content')    if not To:        To = username    if isinstance(To, list):        To = ','.join(To)    if not email_type or (email_type not in ("plain", "html")):        email_type = "html"    main_msg = MIMEMultipart()       main_msg['Subject'] = Subject    main_msg['From'] = From    main_msg['To'] = To    text_msg = MIMEText(content, email_type, 'utf-8')    main_msg.attach(text_msg)    if images:        for f in images:            fp = open(f, 'rb')            img_msg = MIMEImage(fp.read())             fp.close()            basename = os.path.basename(f)            img_msg.add_header('content-disposition',                               'image' + str(images.index(f)), filename=basename)            main_msg.attach(img_msg)    if attachments:        for f in attachments:            basename = os.path.basename(f)            if "." in basename:                   content_type = mimetypes.types_map["." + basename.split(".")[-1]]            else:                                 content_type = 'application/octet-stream'            maintype, subtype = content_type.split('/', 1)            fp = open(f, 'rb')            file_msg = MIMEBase(maintype, subtype)            file_msg.set_payload(fp.read())            fp.close()            encoders.encode_base64(file_msg)            file_msg.add_header('Content-Disposition',                                'attachment' + str(images.index(f)), filename=basename)            main_msg.attach(file_msg)    smtp = smtplib.SMTP(smtpserver)    if use_ssl:        smtp.ehlo()        smtp.starttls()        smtp.ehlo()    smtp.login(username, password)    smtp.sendmail(From, To, main_msg.as_string())    smtp.quit()