Question

我尝试使用selenium来解析以下html页面：

<html>
    <button>Press me</button>
    <body>
        <div class="user-list ng-scope"></div>
    </body>
</html>

当我按下页面上的按钮时，div会被一系列＆＃34; loading＆＃34;的div：

<html>
    <button>Press me</button>
    <body>
        <div class="user-list ng-scope">
            <div class="panel">
                 <div class="panel-body">
                     <i class="glyphicon.glyphicon-cog.spinner.ng- 
                      scope::before"></i>
                 </div>
            </div>
            <div class="panel">
                 <div class="panel-body">
                     <i class="glyphicon.glyphicon-cog.spinner.ng- 
                      scope::before"></i>
                 </div>
            </div>
        </div>
    </body>
</html>

加载<div class="panel"></div>'s后，html如下所示：

<html>
    <button>Press me</button>
    <body>
        <div class="user-list ng-scope">
            <div class="panel">
                 <div class="panel-body">
                     <i class="glyphicon glyphicon-chevron-right"></i>
                 </div>
            </div>
            <div class="panel">
                 <div class="panel-body">
                     <i class="glyphicon glyphicon-chevron-right"></i>
                 </div>
            </div>
        </div>
    </body>
</html>

请注意<i></i>类已更改。基本上我想在Python的selenium模块中使用一个方法来等待<div class="panel"></div>'s加载。我的第一个想法是等待<i></i>类从glyphicon.glyphicon-cog.spinner.ng-scope :: before更改为glyphicon-chevron-right，这表示div已加载。我使用以下python代码行来执行此操作：

import selenium
from selenium import webdriver
from selenium.webdriver.common.keys import Keys 
from selenium.webdriver.firefox.options import Options
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
from selenium.common.exceptions import TimeoutException

driver.wait.until(EC.presence_of_all_elements_located((By.CLASS_NAME, "glyphicon-chevron-right")))

不幸的是，这似乎不起作用，因为程序在div完全加载之前终止。有没有人知道如何利用Python的selenium等待加载任意数量的元素？

Answer 1

你应该等一段时间等待。

WebDriverWait(driver,10).until(EC.visibility_of_all_elements_located((By.CLASS_NAME, "glyphicon-chevron-right")))

Answer 2

好像你差不多了。根据您共享的HTML等待特定<div>元素可见，您可以使用以下解决方案：

WebDriverWait(driver,10).until(EC.visibility_of(driver.find_element_by_xpath("//div[@class='user-list ng-scope']//i[@class='glyphicon glyphicon-chevron-right']")))

Python selenium不会等待加载

2 个答案: