由于車票難搶，有時需要的車票已經售空，而我們需要撿漏，便可使用這個腳本。

具體實現了，自動查詢某一車票的余票數量，當數量產生變化時，將自動發送QQ郵件到對于的郵箱進行提醒。

其中，發送郵箱的部分詳情可參考我上一篇博文：Python 發送郵件 (smtp) QQ郵箱

腳本使用了python + selenium + chrome webdriver，需要先配置好三者的環境。

具體使用時候，需自行改變代碼中的

郵箱信息、出發站、到達站、車次、日期、以及到相應查詢頁面中找到對應車票的html id：

在相應查詢頁面中按F12，彈出開發者模式，點擊按鈕，再點擊對應車票的框，，，復制相應的id號到代碼中對應處。

代碼如下：

#coding:utf8 from selenium import webdriver from selenium.webdriver.common.keys import Keys  import time from smtplib import SMTP_SSL from email.header import Header from email.mime.text import MIMEText  from_station = 'SH' to_station = 'NJ' train_num = 'G14' train_date = '2018-02-14'  ZYid = 'ZY_5l00000G1441' #通過瀏覽器找到要查詢車票的三個id ZEid = 'ZE_5l00000G1441' WZid = 'WZ_5l00000G1441'  def send_email(train_date, train_num, one_num, two_num, wz_num): #函數中郵箱信息改為自己的  email_from = "123456@qq.com"  email_to = "654321@qq.com"  hostname = "smtp.qq.com"  login = "123456@qq.com"  password = "xddflwjfkkfkbidf"  subject = "train_tickets"  text = ("日期:%s 車次:%s 一等座:%s 二等座:%s 無座:%s "%(train_date, train_num, one_num, two_num, wz_num))     smtp = SMTP_SSL(hostname)  smtp.login(login, password)   msg = MIMEText(text, "plain", "utf-8")  msg["Subject"] = Header(subject, "utf-8")  msg["from"] = email_from  msg["to"] = email_to   smtp.sendmail(email_from, email_to, msg.as_string())  smtp.quit()  driver = webdriver.Chrome() driver.get('https://kyfw.12306.cn/otn/index/init')  elem = driver.find_element_by_id("fromStationText") elem.clear() elem.send_keys(from_station) elem.send_keys(Keys.ENTER) #寫入始發站  elem = driver.find_element_by_id("toStationText") elem.clear() elem.send_keys(to_station) elem.send_keys(Keys.ENTER) #寫入終點站  js = "document.getElementById('train_date').removeAttribute('readonly')" #去除日期欄只讀屬性 driver.execute_script(js)  elem=driver.find_element_by_id("train_date") elem.clear() elem.send_keys(train_date) #寫入乘車日期 elem.click()  elem=driver.find_element_by_id("dc") #選擇單程 elem.click()  elem=driver.find_element_by_id("a_search_ticket") #開始查詢 try:  elem.click()  except Exception:  time.sleep(2)  query_times = 0 onetickets_last = 0 twotickets_last = 0 wztickets_last = 0  time.sleep(2)  while(1):  query_times = query_times+1  text=""  try:   driver.find_element_by_id("query_ticket").click() #根據查詢鍵是否可以找到，以判斷頁面顯示正確與否  except Exception:   driver.refresh()   time.sleep(5);   print("bug");   continue   print("第%d次查詢:"%(query_times))  time.sleep(5)   try:   text = driver.find_element_by_id(ZYid).text  except Exception:   driver.refresh()   time.sleep(5);   print("bug")   continue  if not(driver.find_element_by_id(ZYid).text):   driver.find_element_by_id("query_ticket").click()    text = driver.find_element_by_id(ZYid).text #查詢一等座余票  if(text == "有" or text == "無"):   onetickets_now = text   print("%s 一等座 ： %s"%(train_num, onetickets_now))   if(onetickets_now != onetickets_last):    onetickets_last = onetickets_now    #send_email(train_date, train_num, onetickets_last, twotickets_last, wztickets_last)  else:   onetickets_now = text   print("%s 一等座剩余票數 ： %s"%(train_num, onetickets_now))   if(onetickets_now != onetickets_last):    onetickets_last = onetickets_now    #send_email(train_date, train_num, onetickets_last, twotickets_last, wztickets_last)   text = driver.find_element_by_id(ZEid).text #查詢二等座余票  if(text == "有" or text == "無"):   twotickets_now = text   print("%s 二等座 ： %s"%(train_num, twotickets_now))   if(twotickets_now != twotickets_last):    twotickets_last = twotickets_now    send_email(train_date, train_num, onetickets_last, twotickets_last, wztickets_last)  else:   twotickets_now = text   print("%s 二等座剩余票數 ： %s"%(train_num,twotickets_now))   if(twotickets_now != twoticketstwotickets_old):    twotickets_last = twotickets_now    send_email(train_date, train_num, onetickets_last, twotickets_last, wztickets_last)   text = driver.find_element_by_id(WZid).text #查詢無座余票  if(text == "有" or text == "無"):   wztickets_now = text   print("%s 無座 ： %s"%(train_num, wztickets_now))   if(wztickets_now != wztickets_last):    wztickets_last = wztickets_now    send_email(train_date, train_num, onetickets_last, twotickets_last, wztickets_last)  else:   wztickets_now = text   print("%s 無座剩余票數 ： %s"%(train_num, wztickets_now))   if(wztickets_now != wztickets_last):    wztickets_last = wztickets_now    send_email(train_date, train_num, onetickets_last, twotickets_last, wztickets_last)  print("")