python ：EC模块中没有url_contains方法

测试积点老人

EC中没有url_contains方法，而且url开头的方法都没有。是怎么回事？

1. from selenium import webdriver
   
2. from selenium.webdriver.support import expected_conditions as EC
   
3. from selenium.webdriver.support.ui import WebDriverWait
   
4. driver = webdriver.Chrome(executable_path="D:\chromedriver\chromedriver.exe")
   
5. class TrainSpider(object):
   
6.     login_url = "https://kyfw.12306.cn/otn/resources/login.html"
   
7.     personal_url = "https://kyfw.12306.cn/otn/view/index.html"
   
8.     def __init__(self,from_station,to_station,train_date):
   
9.         self.from_station = from_station
   
10.         self.to_station = to_station
    
11.         self.train_date = train_date
    
12.     def login(self):
    
13.         driver.get(self.login_url)
    
14.         WebDriverWait(driver,1000).until(
    
15.             EC.u
    
16.         )
    
17.         print("登录成功")
    
18.     def run(self):
    
19.         self.login()
    
20. def main():
    
21.     spider = TrainSpider("北京","上海","2021-11-23")
    
22.     spider.run()
    
23. if __name__ == '__main__':
    
24.     main()
    

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