python3邮件发送

import smtplib
from email.mime.text import MIMEText
from email.utils import formataddr
#发信人
my_sender=‘******@163.com‘
#163邮箱客户端授权密码
my_pass = ‘******‘
#收信人
my_user=‘******@139.com‘
def mail():
   ret=True
    try:
        #邮件内容
        msg=MIMEText(‘duang‘,‘plain‘,‘utf-8‘)
         #shenzh是昵称,下面的lg也是昵称
        msg[‘From‘]=formataddr(["shenzh",my_sender])
        msg[‘To‘]=formataddr(["lg",my_user])
        msg[‘Subject‘]="hello"
   
        server=smtplib.SMTP("smtp.163.com", 25)
        server.login(my_sender, my_pass)
        server.sendmail(my_sender,[my_user,],msg.as_string())
        server.quit()
    except Exception:
        ret=False
    return ret
ret=mail()
if ret:
    print("send success!")
else:
    print("send failed!")