python stmplib send mail

class SendMail:        def __init__(self,smtpadd,fromadd,toadd):                self.Smtpadd = smtpadd                self.Fromadd = fromadd                self.Toadd = toadd        def Login_Smtp(self,password):                self.smtp = smtplib.SMTP()                self.smtp.connect(self.Smtpadd,25)                self.smtp.login(self.Fromadd,password)        def Send_msg(self,subject,body):                body = base64.b64encode(body)                msg = 'From:%s\nTo:%s\nSubject:%s\nContent-Type:text/html\nContent-Transfer-Encoding:base64\n\n%s'%(            self.Fromadd,self.Toadd,subject,body)                self.smtp.sendmail(self.Fromadd,self.Toadd,msg)        def Smtp_Logout(self):                self.smtp.quit()