python 爬虫select函数

在Python爬虫中，select函数是用来通过CSS选择器来定位HTML元素的方法。它是使用BeautifulSoup库中的方法，结合requests库获取到的网页内容进行解析。这个函数可以根据标签名、类名、id、属性等多种方式来定位元素。`表示获取列表中的第一个元素。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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