python 脚本股票价格达到设定的价格就发送邮件

import os
 import time
 import tushare as ts
 import pandas as pd
 import smtplib
 from email.mime.text import MIMEText
  
 def check(code, low, high):
     global e
     df = ts.get_realtime_quotes(code)
     e = df[['code','name','price','time']]
     p = df[u'price']
     print (e) 
     if float(p[0]) > high:
         user = '[e-mail]'  # 发件人，这里为163邮箱了
         pwd = '*****'  # 163邮箱的SMTP授权码
         to = '******'  # 可以设置多个收件人，英文逗号隔开，如：'***@qq.com, ***@163.com'        # 1.邮件正文内容
         msg = MIMEText('股票价格达到设定的价格')        # 2.设置邮件主题、发件人、收件人
         msg['Subject'] = '股票价格达到设定的价格!'
         msg['From'] = user
         msg['To'] = to        # 3.发送邮件
         s = smtplib.SMTP_SSL('smtp.163.com', 465)  # 选择163邮箱服务，默认端口为465
         s.login(user, pwd)  # 登录163邮箱
         s.send_message(msg)  # 发送邮件
         s.quit()
     else :
         return False
     
 while True:
     if  check('603121',0,25.55):
         exit()
     time.sleep(5)