通过smtplib发邮件的客户端class

通过smtplib发邮件的客户端class 喜欢实现n多的功能，赶紧做个备份，避免以后需要再折腾。
定义邮件title（mailsub），以,或;分隔的附加文件列表（filelist），正文文本（和textype结合，可发送htm格式）等；

那个msg['To'] 和最后sendmail里面的收件人地址可以考虑分开，随便对msg['To']赋值，这样可以实现隐藏收件人的信息；

class PySendMail:
        def __init__(self,user='mailuser',userpass='mailpass',smtpserver='x.x.x.x',fro='mailuser '):
            '''注意对于某些smtp server,fro必须附有类似,可以让smtp server识别为正确存在的帐号;
            '''
                self.user = user
                self.userpass = userpass
                self.smtpserver = smtpserver
                self.fro = fro
   
        def sendmail(self,mailto='',mailsub='',attachtext='',textype='plain',dctype='application/octet-stream',filelist='',login=1,debug=0):
            '''filelist: 邮件附件文件列表,可以以","或者";"分隔;
        attachtext: 邮件的文本正文;
        textype: text 或者 html, 处理邮件正文;
        dctype: 默认附件类型为application/octet-stream;
        mailto: 要发送的邮件地址列表,可以以","或者";"分隔
        login: 如果设置为1，smtp将采用指定的用户密码登陆，默认为1；
        debug: 设置为1，开启debug，默认为0；
        '''
       
                import smtplib
                import mimetypes
                from email.MIMEMultipart import MIMEMultipart
                from email.MIMEBase import MIMEBase
                from email.MIMEText import MIMEText
                from email.Utils import COMMASPACE, formatdate
                from email import Encoders
                from email.MIMEImage import MIMEImage

        #处理邮件地址列表
        addrlist1 = re.split('\s*[,|;]\s*',mailto)
        addrlist = []
        for addr in addrlist1:
            if  re.match('\s*\S+@\S+\.\S+',addr): addrlist.append(addr)
               
                msg = MIMEMultipart()
                msg['From'] = self.fro
                msg['To'] = COMMASPACE.join(addrlist)
                msg['Date'] = formatdate(localtime=True)
                msg['Subject'] = mailsub
               
                #处理文本:
                maintype = 'text'
                if textype == 'plain' or textype == 'html':
                    txtsubtype = textype
            fpld =  MIMEBase (maintype, txtsubtype)
            fpld.set_payload(attachtext)
            Encoders.encode_base64(fpld)
            msg.attach(fpld)
           
            #处理附件:
            mailfilelist = []
            if filelist:    mailfilelist = re.split('\s*[,|;]\s*',filelist)
        for adfile in mailfilelist:           
                 ctype, encoding = mimetypes.guess_type(adfile)
                if ctype is None or encoding is not None:
                        ctype = dctype
                maintype, subtype = ctype.split('/', 1)
                try:
                        fsock=open(adfile,'rb')
                        fpld =  MIMEBase (maintype, subtype)
                        fpld.set_payload(fsock.read())
                        Encoders.encode_base64(fpld)
                        fsock.close
                        #if ctype != 'text/plain':
                            fpld.add_header('Content-Disposition', 'attachment',filename=re.split('/',adfile)[-1])
                        msg.attach(fpld)
                except IOError:
                        print 'cant open file: %s ' %adfile 
                                            
        #邮件发送
                smtp = smtplib.SMTP(self.smtpserver)
                if debug:    smtp.debuglevel = 5
                if login:    smtp.login(self.user,self.userpass)
                smtp.sendmail(self.fro, addrlist, msg.as_string() )
                smtp.close()
http://blog.chinaunix.net/u1/57278/showart_482145.html