python">#!/usr/bin/env python
# coding: utf-8

# In[2]:


import pandas as pd
import requests
from bs4 import BeautifulSoup


flag_ex=0
flag=0



#邮件核心
import smtplib
from email.mime.text import MIMEText
from email.header import Header
def fasong(message,targetmail):


    '''发送邮箱'''
    sender = '***@163.com' #企业263邮箱
    '''接收邮箱'''
    receiver = targetmail
    '''发送邮件主题'''
    subject = '阿阳消息关于switch有货'
    '''发送邮箱服务器'''
    smtpserver = 'smtp.163.com'
    '''发送邮箱用户/密码'''
    username = '***@163.com'
    password = '***'
    '''中文需参数‘utf-8’ ，单字节字符不需要'''
    msg = MIMEText(message,'plain','utf-8')
    msg['Subject'] = Header(subject, 'utf-8')
    msg['From'] = '***<***@163.com>'
    msg['To'] = targetmail
    smtp = smtplib.SMTP()
    smtp.connect('smtp.163.com')
    smtp.login(username, password)
    smtp.sendmail(sender, receiver, msg.as_string())
    smtp.quit()
    print ("Email has been sent out!")   


# In[12]:


#主市场
def am():
    htm=requests.get('http://www.nowinstock.net/videogaming/consoles/nintendoswitch/#')

    htm.encoding='utf-8'
    soup = BeautifulSoup(htm.text)
    thing=soup.select('#tr45408 > td.stockStatus')[0]
    thing.text
    return thing.text



# In[13]:


#日版
def jp():
    url='http://www.nowinstock.net/jp/videogaming/consoles/nintendoswitch/'
    htm=requests.get(url)
    htm.text
    soup = BeautifulSoup(htm.text)
    thing=soup.select('#tr46705 > td.stockStatus')[0]
    thing.text
    return thing.text
#tr45419 > td.stockStatus


# In[25]:


#UK
def uk():
    url='http://www.nowinstock.net/uk/videogaming/consoles/nintendoswitch/'
    htm=requests.get(url)
    htm.text
    soup = BeautifulSoup(htm.text)
    thing=soup.select('#tr45419 > td.stockStatus')[0]
    thing.text
    return thing.text


# In[23]:


url='http://www.nowinstock.net/uk/videogaming/consoles/nintendoswitch/'
htm=requests.get(url)
htm.text
soup = BeautifulSoup(htm.text)
thing=soup.select('#tr45419 > td.stockStatus')[0]
thing.text

#tr45419 > td.stockStatus
#tr45419 > td.stockStatus


# In[ ]:


import time
while True:
    try:
        text0=am()
        text1=jp()
        text2=uk()
        textlist=[text0,text1,text2]
        for a in textlist:
            
            if a=='Preorder' or a == 'In Stock':
                flag_ex=flag
                flag=1
                print('yes')
                fasong(a,'***@163.com')
                break
            else:
                flag=0
                print('no')
            
    except:
        print('fail to do this')
        pass
    
    

        
    time.sleep(300)

我是半年前挂在VPS运行的,然后借助这个通知帮朋友购置了英版的switch森友版，比淘宝海淘便宜多了。现在vps到期了，我就把这段代码发出来，作为一段纪念和回忆了，希望能帮到有想法的朋友。