python smptl attachment filename messy code tcmime.xxx.bin email 附件名称 .bin乱码

　　文件名称也要转为 bytes，使用对应编码 encode 

或者

　　 from email.header import Header

att2["Content-Disposition"] = 'attachment; filename="%s"'%
　　str(Header(filename,'utf-8'))

# encoding=utf-8
import os

import smtplib

import mimetypes
from email.mime.audio import MIMEAudio
from email.mime.multipart import MIMEMultipart
from email.header import Header

_user = "xy@"
_pwd = "y"
_to = "00000@qq.com"


msg_ = MIMEMultipart()

msg_["Subject"] = "don't panic"
msg_["From"] = "_user"
msg_["To"] = "xy@dois.top"


path = ur"F:media音乐Springloll - 랄라라.mp3"
att2 = MIMEAudio(open(path, 'rb').read(),"mp3")

att2["Content-Type"] =  mimetypes.guess_type(path)[0] # or 'application/octet-stream'

att2["Content-Disposition"] = 'attachment; filename="%s"'%str(Header(os.path.basename(path), 'UTF-8'))


msg_.attach(att2)

try:
    s = smtplib.SMTP_SSL("smtp.qq.com", 465)
    s.login(_user, _pwd)
    s.sendmail(_user, [_to], msg_.as_string())
    s.quit()
    print "Success!"
except smtplib.SMTPException, e:
    print "Falied,", e, type(e)