使用BeautifulSoup导航到第二个字符串文本 | 使用BeautifulSoup导航到第二个字符串文本

本文介绍了使用BeautifulSoup导航到第二个字符串文本的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

这是lxml，它另存为sample.html.

Here is the lxml, it's saved as sample.html.

<html>
    <body>
    <div class ="ecopyramid">
        <ul id ="producers">
            <li class ="producerlist">
                <div class ="name">A1</div>
                <div class ="number">100000</div>
            </li>
            <li class ="producerlist">
                <div class ="name">B1</div>
                <div class ="number">100000</div>
            </li>
        </ul>
        <ul id ="primaryconsumers">
            <li class ="primaryconsumerlist">
                <div class ="name">A2</div>
                <div class ="number">1000</div>
            </li>
            <li class ="primaryconsumerlist">
                <div class ="name">B2</div>
                <div class ="number">2000</div>
            </li>
        </ul>
        <ul id ="secondaryconsumers">
            <li class ="secondaryconsumerlist">
                <div class ="name">A3</div>
                <div class ="number">100</div>
            </li>

            <li class ="secondaryconsumerlist">
                <div class ="name">B3</div>
                <div class ="number">98</div>
            </li>
        </ul>
        <ul id ="tertiaryconsumers">
            <li class ="tertiaryconsumerlist">
                <div class ="name">A4</div>
                <div class ="number">80</div>
            </li>
            <li class ="tertiaryconsumerlist">
                <div class ="name">B4</div>
                <div class ="number">50</div>
            </li>
        </ul>
    </body>
</html>

这是在上面的sample.html中导航的代码:

Here is the code to navigate through the sample.html above:

from bs4 import BeautifulSoup

with open("sample.html", "r") as sample_pyramid:
    soup=BeautifulSoup(sample_pyramid, "lxml")

soup_object = soup.find("ul", id="secondaryconsumers")
print soup_object.li.div.string

因此在此代码中，我能够首先通过标签"ul"和id"secondaryconsumers"指定文本"A3"的父位置，然后在打印命令中通过".li.div"进一步指定".string"后缀并输出所需的文本"A3".我的问题如下:

So in this code I am able to first specify the parent location of the text "A3" first by the tag "ul" and id "secondaryconsumers", then in the print command I specify further by the ".li.div.string" suffix and output the desired text of "A3". My questions are as follows:

1)在此示例中，我该如何编码才能调用/打印文本"B3"?

1) How do I code in order to call/print the text "B3" in this example?

2)在此示例中，我该如何编码才能调用/打印文本"98"(在"B3"下方)?

2) How do I code in order to call/print the text "98" (below "B3") in this example?

我尝试了很多事情都没有成功，我可以通过导航调用第一个文本对象，但是不能调用共享标签中的第二个文本对象.

I have tried many things with no success, I am able to call the first text object through the navigation, but not the second text object within the shared tags.

有什么想法吗?

推荐答案

您可以使用 CSS选择器以获取名称和数字:

You can use CSS selectors to get names and numbers:

names = soup.select('ul#secondaryconsumers > li.secondaryconsumerlist > div.name')
numbers = soup.select('ul#secondaryconsumers > li.secondaryconsumerlist > div.number')

print [name.text for name in names]
print [number.text for number in numbers]

打印:

[u'A3', u'B3']
[u'100', u'98']

注释中后续问题的示例代码:

Example code for the follow-up question in comments:

from bs4 import BeautifulSoup


data = """
<div class="span9">
    <table class="result-data table" border="0">
        <tbody>
        <tr class="result-item highlighting">
            <td class="result-category" scope="row">Name:</td>
            <td class="result-value-bold" colspan="4" itemprop="item">
                Robin Hood
            </td>
        </tr>
        </tbody>
    </table>
</div>
"""

soup = BeautifulSoup(data)
print soup.find('td', class_="result-value-bold").get_text(strip=True)

打印Robin Hood.

或者，或者首先找到父table和tr:

Or, alternatively first find parent table and tr:

table = soup.find('table', class_='result-data')
tr = table.find('tr', class_='result-item')
print tr.find('td', class_="result-value-bold").get_text(strip=True)

这篇关于使用BeautifulSoup导航到第二个字符串文本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！