smtplib发送邮件

#coding=utf-8

# smtplib负责发送邮件的动作，连接邮箱服务器、登录、发送
# email负责构造邮件，指的是邮箱页面显示，如发件人，收件人，主题，正文，附件等
import smtplib

from email.mime.text import MIMEText
from email.mime.image import MIMEImage
from email.mime.multipart import MIMEMultipart
from email.header import Header
from email.utils import formataddr

# 设置smtplib所需的参数
from_addr = '发件人邮箱地址'
receivers = ['收件人邮件地址']
qqAuthPassword = '发件人邮箱密码'
smtp_server = '服务器地址'
smtp_port = 587

attach_filename = 'test.py'
attach_imagefile = u'1.png'

def mail():
    ret = True
    try:
        # 构造邮件对象MIMEMultipart对象
        message = MIMEMultipart('mixed')
        message['From'] = from_addr
        message['To'] = ';'.join(receivers)
        message['Subject'] = u'subject'

        msgAlternative = MIMEMultipart('alternative')
        message.attach(msgAlternative)

        # 构造html
        mail_msg = '''
        <p>邮件发送测试...</p>

        '''
        ##        <p><img src='cid:image1'></p>
        msgAlternative.attach(MIMEText(mail_msg, 'html', 'utf-8'))

        # 构造图片链接
        fp = open(attach_imagefile, 'rb')
        msgImage = MIMEImage(fp.read())
        fp.close()

        msgImage.add_header('Content-ID', '<image1>')
        message.attach(msgImage)
        
        # 构造附件
        att1 = MIMEText(open(attach_filename, 'rb').read(), 'base64', 'utf-8')
        att1['Content-Type'] = 'application/octet-stream'
        att1['Content-Disposition'] = 'attachment;filename=' + attach_filename
        message.attach(att1)
        
        
        # 配置服务器
        if smtp_port == 25:
            smtp = smtplib.SMTP()
            smtp.connect(smtp_server,smtp_port)
        elif smtp_port == 465:
            smtp = smtplib.SMTP_SSL(smtp_server, smtp_port)       
        elif smtp_port == 587:
            smtp = smtplib.SMTP(smtp_server, smtp_port)
            smtp.connect(smtp_server,smtp_port)
            
            
        smtp.ehlo()
        smtp.starttls()
        smtp.login(from_addr, qqAuthPassword)
        smtp.sendmail(from_addr, receivers, message.as_string())
        smtp.quit()
    except Exception as e:
        print('Error--' + str(e))
        ret = False
    return ret
        
ret = mail()
if ret:
    print(u'邮件发送成功')
else:
    print(u'邮件发送失败' )