python发送邮件示例(支持中文邮件标题)

代码如下:
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'])