用smtplib和email封装python发送邮件模块类分享

代码如下:
#!/usr/bin/python
# encoding=utf-8
# Filename: send_email.py
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText 
import smtplib 

class SendEmail:
    # 构造函数：初始化基本信息
    def __init__(self, host, user, passwd):
        lInfo = user.split("@")
        self._user = user
        self._account = lInfo[0]
        self._me = self._account + "<" + self._user + ">"

        server = smtplib.SMTP() 
        server.connect(host) 
        server.login(self._account, passwd)
        self._server = server     

    # 发送文件或html邮件   
    def sendTxtMail(self, to_list, sub, content, subtype='html'):   
        # 如果发送的是文本邮件，则_subtype设置为plain
        # 如果发送的是html邮件，则_subtype设置为html
        msg = MIMEText(content, _subtype=subtype, _charset='utf-8') 
        msg['Subject'] = sub 
        msg['From'] = self._me 
        msg['To'] = ";".join(to_list) 
        try:
            self._server.sendmail(self._me, to_list, msg.as_string())  
            return True 
        except Exception, e: 
            print str(e) 
            return False

    # 发送带附件的文件或html邮件      
    def sendAttachMail(self, to_list, sub, content, subtype='html'):
        # 创建一个带附件的实例
        msg = MIMEMultipart() 
        # 增加附件1
        att1 = MIMEText(open(r'D:/javawork/PyTest/src/main.py','rb').read(), 'base64', 'utf-8')
        att1["Content-Type"] = 'application/octet-stream'
        # 这里的filename可以任意写，写什么名字，邮件中显示什么名字
        att1["Content-Disposition"] = 'attachment; filename="main.py"'