python实现批量解析邮件并下载附件

#-*- encoding: gb2312 -*-
import os
import email

def mail_to_text(mailname,datapath,index):
#由于批处理的邮件包含的附件名称相同，这里传入一个index作为区别符
  fp=open(mailname,"r")
  msg=email.message_from_file(fp)

  for par in msg.walk():
    if not par.is_multipart():
      name=par.get_param("name") #获取附件名

      if name:
        h=email.Header.Header(name)
        dh=email.Header.decode_header(h)
        fname = dh[0][0]

        data=par.get_payload(decode=True)

        try:
          f=open(fname,'wb')
        except:
          data_name=str(h).replace('/','_') #附件数据
          f=open(datapath+'\\'+str(index)+data_name,'wb')
        f.write(data)
        f.close()

if __name__=='__main__':
  dir="C:\\Users\\admin\\Desktop\\srcData\\"  #邮件存放路径
  Dir=unicode(dir,"utf8")
  datapath="C:\\Users\\admin\\Desktop\\destData"  #附件存放路径
  DataPath=unicode(datapath,"utf8")
  count=0


  for filename in os.listdir(dir):
    print filename
    filename=unicode(dir+filename,"utf8")  #由于邮件名出现中文，所以统一用utf8编码，便于读取
    print filename
    count+=1
    mail_to_text(filename,datapath,count)