<p>{a1}有3个条目用于<strong>畅销书排名</strong>。一种有效的方法是收集所有三（3）<em>畅销书</em>中的<code>href</code>，将它们存储在一个列表中，并在一个单独的选项卡中打开以进行刮取。要构造列表，必须为<code>visibility_of_all_elements_located()</code>归纳<a href="https://stackoverflow.com/questions/49775502/webdriverwait-not-working-as-expected/49775808#49775808">WebDriverWait</a>，并且可以使用以下<a href="https://stackoverflow.com/questions/48369043/official-locator-strategies-for-the-webdriver/48376890#48376890">Locator Strategies</a>之一：</p>
<ul>
<li><p>使用<code>CSS_SELECTOR</code>：</p>
<pre><code>driver.get('https://www.amazon.com/dp/B074T6C4YS')
print([my_elem.get_attribute("href") for my_elem in WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.CSS_SELECTOR, "table#productDetails_detailBullets_sections1 td>span>span a")))])
</code></pre>
</li>
<li><p>在一行中使用<code>CSS_SELECTOR</code>：</p>
<pre><code>driver.get('https://www.amazon.com/dp/B074T6C4YS')
print([my_elem.get_attribute("href") for my_elem in WebDriverWait(driver, 20).until(EC.visibility_of_all_elements_located((By.XPATH, "//table[@id='productDetails_detailBullets_sections1']//td/span/span//a")))])
</code></pre>
</li>
<li><p>控制台输出：</p>
<pre><code>['https://www.amazon.com/gp/bestsellers/kitchen/ref=pd_zg_ts_kitchen', 'https://www.amazon.com/gp/bestsellers/kitchen/289857/ref=pd_zg_hrsr_kitchen', 'https://www.amazon.com/gp/bestsellers/kitchen/289862/ref=pd_zg_hrsr_kitchen']
</code></pre>
</li>
<li><p><strong>注意</strong>：您必须添加以下导入：</p>
<pre><code>from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.common.by import By
from selenium.webdriver.support import expected_conditions as EC
</code></pre>
</li>
</ul>
