使用beautifulsoup4的CSS选择不起作用 [英] CSS select with beautifulsoup4 doesn't work

问题描述

我尝试了bs4，但是select方法不起作用.

I tried bs4, but the select method doesn't work.

我的代码怎么了?

import requests
import bs4

def main():
    r = requests.get("http://nodejs.org/download/")
    soup = bs4.BeautifulSoup(r.text)

    selector = "div.interior:nth-child(2) > table:nth-child(2) > tbody:nth-child(1) > tr:nth-child(1) > td:nth-child(3) > a:nth-child(1)"
    print(soup.select(selector)[0].text)

if __name__ == "__main__":
    main()

推荐答案

此页面上的答案不同于在浏览器中查看与使用bs进行解析不同. 看一下您的r.text并从那里解析.

The Answer on this page differs from viewing in a browser than parsing with bs. Have a look at your r.text and parse from there.

响应类似于

<div class="interior row">
<div id="installers">
<ul>
<li>
<a href="http://nodejs.org/dist/v0.10.26/node-v0.10.26-x86.msi">
<img alt="" height="50" src="http://nodejs.org/images/platform-icon-win.png" width="45">
              Windows Installer
              <small>node-v0.10.26-x86.msi</small>
</img></a>
</li>
<li>
<a href="http://nodejs.org/dist/v0.10.26/node-v0.10.26.pkg">
<img alt="" height="50" src="http://nodejs.org/images/platform-icon-osx.png" width="45">
              Macintosh Installer
              <small>node-v0.10.26.pkg</small>

所以这里没有桌子. 希望这会有所帮助.

so there is no table here. Hope this helps.

以下是我的代码，以获得此响应:

My Code is the following to get this response:

def main():
    r = requests.get("http://nodejs.org/download/")
    soup = bs4.BeautifulSoup(r.text)
    # print r.text
    selector = "div.interior"
    print(soup.select(selector)[2])

您可以尝试使用find.你对那个很灵活.

Edit 2: You could try it with find. You are mor flexible with that one.

soup = bs4.BeautifulSoup(r.text)
print(soup.find("a", text="64-bit"))

这应该起作用:

def main():
    r = requests.get("http://nodejs.org/download/", headers={"content-type":"text", "User-   Agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/536.5 (KHTML, like Gecko) Chrome/19.0.1084.52 Safari/536.5"})
    soup = bs4.BeautifulSoup(r.text)
    print(soup.find("table").tr.td.findNextSibling().a['href'])

这篇关于使用beautifulsoup4的CSS选择不起作用的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！