python下载邮件

一直想用qt来写一个邮件客户端的，但是c++下面总也找不到能运行的demo，只好找了个python的了，需要运行在python2.7下面，转来的代码，如下：

#-*- encoding: utf-8 -*-
#author : rayment
#CreateDate : 2013-01-24`

import imaplib
import email
#设置命令窗口输出使用中文编码
import sys
reload(sys)
sys.setdefaultencoding('gbk')

#保存文件方法（都是保存在指定的根目录下）
def savefile(filename, data, path):
    try:
        filepath = path + filename
        print('Saved as ' + filepath)
        f = open(filepath, 'wb')
    except:
        print('filename error')
        f.close()
    f.write(data)
    f.close()
   
#字符编码转换方法
def my_unicode(s, encoding):
    if encoding:
        return unicode(s, encoding)
    else:
        return unicode(s)

#获得字符编码方法
def get_charset(message, default="ascii"):
    #Get the message charset
    return message.get_charset()
    return default

#解析邮件方法（区分出正文与附件）
def parseEmail(msg, mypath):
    mailContent = None
    contenttype = None
    suffix =None
    for part in msg.walk():
        if not part.is_multipart():
            contenttype = part.get_content_type()   
            filename = part.get_filename()
            charset = get_charset(part)
            #是否有附件
            if filename:
                h = email.Header.Header(filename)
                dh = email.Header.decode_header(h)
                fname = dh[0][0]
                encodeStr = dh[0][1]
                if encodeStr != None:
                    if charset == None:
                        fname = fname.decode(encodeStr, 'gbk')
                    else:
                        fname = fname.decode(encodeStr, charset)
                data = part.get_payload(decode=True)
                print('Attachment : ' + fname)
                #保存附件
                if fname != None or fname != '':
                    savefile(fname, data, mypath)            
            else:
                if contenttype in ['text/plain']:
                    suffix = '.txt'
                if contenttype in ['text/html']:
                    suffix = '.htm'
                if charset == None:
                    mailContent = part.get_payload(decode=True)
                else:
                    mailContent = part.get_payload(decode=True).decode(charset)         
    return  (mailContent, suffix)

#获取邮件方法
def getMail(mailhost, account, password, diskroot, port = 993, ssl = 1):
    mypath = diskroot + ':\\'
    #是否采用ssl
    if ssl == 1:
        imapServer = imaplib.IMAP4_SSL(mailhost, port)
    else:
        imapServer = imaplib.IMAP4(mailhost, port)
    imapServer.login(account, password)
    imapServer.select()
    #邮件状态设置，新邮件为Unseen
    #Message statues = 'All,Unseen,Seen,Recent,Answered, Flagged'
    resp, items = imapServer.search(None, "All")
    number = 1
    for i in items[0].split():
       #get information of email
       resp, mailData = imapServer.fetch(i, "(RFC822)")   
       mailText = mailData[0][1]
       msg = email.message_from_string(mailText)
       ls = msg["From"].split(' ')
       strfrom = ''
       if(len(ls) == 2):
           fromname = email.Header.decode_header((ls[0]).strip('\"'))
           strfrom = 'From : ' + my_unicode(fromname[0][0], fromname[0][1]) + ls[1]
       else:
           strfrom = 'From : ' + msg["From"]
       strdate = 'Date : ' + msg["Date"]
       subject = email.Header.decode_header(msg["Subject"])
       sub = my_unicode(subject[0][0], subject[0][1])
       strsub = 'Subject : ' + sub
             
       mailContent, suffix = parseEmail(msg, mypath)
       #命令窗体输出邮件基本信息
       print('\n')
       print('No : ' + str(number))
       print(strfrom)
       print(strdate)
       print(strsub)

       #保存邮件正文
       if (suffix != None and suffix != '') and (mailContent != None and mailContent != ''):
           savefile(str(number) + suffix, mailContent, mypath)
           number = number + 1
           
    imapServer.close()
    imapServer.logout()

if __name__ =="__main__":
    #邮件保存在e盘
    mypath ='e'
    print('begin to get email...')
    #getMail('pop.gmail.com', '***@gmail.com', 'xxxxx', mypath, 993, 1)
    #qq邮箱登陆用ssl，注意下面的xxxxxx是qq邮箱的imap授权码，要在qq邮箱里设置
    getMail('imap.qq.com', '***@qq.com', 'xxxxxx', mypath, 993, 1)
    print('the end of get email.')