如何從具有class和id的html文件中選擇scrapy中的數據？

Question

<div class="section-body" id="section-2"><p>Most people with aortic stenosis do not develop symptoms until the disease is advanced. The diagnosis may have been made when the health care provider heard a heart murmur and performed tests.</p><p>Symptoms of aortic stenosis include:</p><ul><li>Chest discomfort: The chest pain may get worse with activity and reach into the arm, neck, or jaw. The chest may also feel tight or squeezed.</li><li>Cough, possibly bloody.</li><li>Breathing problems when exercising.</li><li>Becoming easily tired.</li><li>Feeling the heartbeat (palpitations).</li><li>Fainting, weakness, or dizziness with activity.</li></ul><p>In infants and children, symptoms include:</p><ul><li>Becoming easily tired with exertion (in mild cases)</li><li>Failure to gain weight</li><li>Poor feeding</li><li>Serious breathing problems that develop within days or weeks of birth (in severe cases)</li></ul><p>Children with mild or moderate aortic stenosis may get worse as they get older. They are also at risk for a heart infection called bacterial endocarditis.</p></div></div></section>

我上面的腳本，我想放棄在列表中的數據。即在 我已經在scrapy中嘗試了以下命令，但無法正常工作。它將'[]'作爲輸出。

response.css("article div.section-body p").extract() <-- this is giving all info under section body but I want only under section-2 
    response.css("article div.section-body.section-2 p::text").extract() 
response.xpath("//article/*[contains(@id, 'setion-2')]").extract() 

請幫我解壓。由於

Answer 1

嘗試

response.css("article div.section-body#section-2 p::text").extract() 

div.section-body#section-2是指同時具有section-body class和id section-2

注意，ID是由#選擇類是由.選擇......所以你的CSS選擇器張貼在選擇DIV你的問題是錯誤的。