Question

我正在尝试一次浏览一个网站，点击元素next，HTML代码为class="pg-next"。但是，最终，我将要结束，并且不再有next元素，此时我想停止循环。我有这样的事情：

pg_next_exists = True
while pg_next_exists:
    #
    # carry out necessary actions
    #
    if ...: # if the pg-next element can be found
        pass
    else:
        pg_next_exists = False # at which point the while loop stops

如何检查该元素是否仍然存在？

Answer 1

为什么不使用wait尝试类似这样的内容

from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC

browser = webdriver.Firefox()
browser.get('http://example.com/')

try:
     wait = WebDriverWait(browser, 10) 
     search = wait.until(EC.element_to_be_clickable((By.CLASS_NAME, 'next')))
     search.click()
except:
     # Process element not found here

Python，Selenium：如何检查元素的存在？

1 个答案: