一、发送邮件的前提是必须开通发件服务器获取对应授权密码。

二、对应代码如下所示
import smtplib
from email.mime.text import MIMEText
from email.header import Header
# 第三方 SMTP 服务
mail_host="smtp.163.com" #设置服务器
mail_user="liuchunlin202205@163.com" #用户名
mail_pass="授权密码" #口令
sender = 'liuchunlin202205@163.com'
receivers = ['liuchunlin202205@163.com'] # 接收邮件,可设置为你的QQ邮箱或者其他邮箱
message = MIMEText('Python 邮件发送测试...', 'plain', 'utf-8')
message['From'] = Header("菜鸟教程", 'utf-8')
message['To'] = Header("测试", 'utf-8')
subject = 'Python SMTP 邮件测试'
message['Subject'] = Header(subject, 'utf-8')
try:
smtpObj = smtplib.SMTP()
smtpObj.connect(mail_host,25) # 25 为 SMTP 端口号
smtpObj.login(mail_user,mail_pass)
smtpObj.sendmail(sender, receivers, message.as_string())
print ("邮件发送成功")
except smtplib.SMTPException:
print ("Error: 无法发送邮件")