智能等待页面元素(显示的等待同步测试)

 1 # -*- coding:utf-8 -*-
 2 
 3 from selenium import webdriver
 4 from selenium.webdriver.support.ui import WebDriverWait
 5 
 6 driver = webdriver.Firefox()
 7 driver.get('http://demo.tutorialzine.com/2009/09/simple-ajax-website-jquery/demo.html')
 8 
 9 page4button = driver.find_element_by_link_text('Page 4')
10 page4button.click()
11 
12 #设置等待时间10秒
13 wait = WebDriverWait(driver, 10)
14 
15 try:
16     #在10秒内每500毫秒检查一次元素是否存在, 10秒后元素不存在则提示 tester
17     wait.until(lambda x: x.find_element_by_id('pageContent1'), 'tester')
18 except Exception as e:
19     print e