Question

回溯（最近通话最近）：文件 “ C：\ Users \ PSWN672P \ AppData \ Local \ Programs \ Python \ Python37 \ Python 程序\ SNOW1.py”，第17行，在 EC.element_to_be_clickable（（（由CSS_SELECTOR，'ul [id * =“ collapseId”]> li：nth-child（5）> ul [id * =“ collapseId”]> li> div> a> div> div'））文件“ C：\ Users \ PSWN672P \ AppData \ Local \ Programs \ Python \ Python37 \ lib \ site-packages \ selenium \ webdriver \ support \ wait.py”， 80行，直到引发TimeoutException（消息，屏幕，堆栈跟踪） selenium.common.exceptions.TimeoutException：消息：

尝试使用文本作为我的网上论坛访问元素，并运行脚本以自动单击该元素并导航至下一页：

from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.common.action_chains import ActionChains
from selenium.webdriver.support.ui import WebDriverWait
from selenium.common.exceptions import TimeoutException
from selenium.webdriver.support import expected_conditions as EC
import time


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

try:

    window_before=browser.window_handles[0]
    element=WebDriverWait(browser,10).until(EC.element_to_be_clickable((By.CSS_SELECTOR,'ul[id*="collapseId"]>li:nth-child(5)>ul[id*="collapseId"]>li>div>a>div>div')))
    element.click()
    time.sleep(15)
    window_after=browser.window_handles[1]
    browser.switch_to_window(window_after)

finally:

    browser.quit()

<a class="sn-widget-list-item sn-widget-list-item_hidden-action module-node" id="2ccb50dfc61122820032728dcea648fe" href="task_list.do?sysparm_userpref_module=2ccb50dfc61122820032728dcea648fe&amp;sysparm_query=assignment_group=javascript:getMyGroups()^active=true^assigned_to=^sys_class_name!=cert_follow_on_task^sys_class_name!=sc_req_item^sys_class_name!=sc_request^EQ&amp;sysparm_clear_stack=true" target="gsft_main"><div class="sn-widget-list-content" data-id="2ccb50dfc61122820032728dcea648fe">
    <div class="sn-widget-list-content" data-id="2ccb50dfc61122820032728dcea648fe">
        <div class="sn-widget-list-title">My Groups Work</div>
    </div>
</a>

Answer 1

为什么不只按类名查找元素？

element=WebDriverWait(browser,10).until(EC.element_to_be_clickable((By.CLASS_NAME,'sn-widget-list-title')))

Answer 2

CSS选择器引发超时异常，因为您改编的Locator Strategy不能唯一地标识所需的元素。 TimeoutException 可能是 ExpectedConditions 失败的结果。但是，对于文本为“我的网上论坛工作”的元素，click()可以使用以下解决方案：

使用CSS_SELECTOR：

element = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.CSS_SELECTOR, "a.sn-widget-list-item.sn-widget-list-item_hidden-action.module-node[href^='task_list.do?sysparm_userpref_module=']>div.sn-widget-list-content[data-id]>div.sn-widget-list-title")))

替代

使用XPATH：

element = WebDriverWait(driver, 20).until(EC.element_to_be_clickable((By.XPATH, "//a[@class='sn-widget-list-item sn-widget-list-item_hidden-action module-node' and starts-with(@href,'task_list.do?sysparm_userpref_module=')]/div[@class='sn-widget-list-content' and (@data-id)]/div[@class='sn-widget-list-title' and contains(., 'My Groups Work')]")))

注意：您必须添加以下导入：

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

CSS选择器在Selenium脚本中引发超时异常

2 个答案: