Python 了解 Beautiful Soup 中的 Find() 函数
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Understand the Find() function in Beautiful Soup
提问by OneManRiot
I know what I'm trying to do is simple but it's causing me grief. I'd like pull data from HTML using BeautifulSoup. To do that I need to properly use the .find()function. Here's the HTML I'm working with:
我知道我想要做的很简单，但这让我感到悲伤。我想使用 BeautifulSoup 从 HTML 中提取数据。为此，我需要正确使用该.find()功能。这是我正在使用的 HTML：
<div class="audit">
<div class="profile-info">
<img class="profile-pic" src="https://pbs.twimg.com/profile_images/471758097036226560/tLLeiOiL_normal.jpeg" />
<h4>Ed Boon</h4>
<span class="screen-name"><a href="http://www.twitter.com/noobde" target="_blank">@noobde</a></span>
</div>
<div class="followers">
<div class="pie"></div>
<div class="pie-data">
<span class="real number" data-value=73599>73,599</span><span class="real"> Real</span><br />
<span class="fake number" data-value=32452>32,452</span><span class="fake"> Fake</span><br />
<h6>Followers</h6>
</div>
</div>
<div class="score">
<img src="//twitteraudit-prod.s3.amazonaws.com/dist/f977287de6281fe3e1ef36d48d996fb83dd6a876/img/audit-result-good.png" />
<div class="percentage good">
69%
</div>
<h6>Audit score</h6>
The values I want are 73599from data-value=73599, 32352from data-value=32452, and the 69%from percentage good.
我想要的值是73599from data-value=73599、32352fromdata-value=32452和69%from percentage good。
Using past code and online examples, this is what I have so far:
使用过去的代码和在线示例，这是我目前所拥有的：
RealValue = soup.find("div", {"class":"real number"})['data-value']
FakeValue = soup.find("audit", {"class":"fake number"})['data-value']
Both so far to no effect. I'm not sure how to craft the find in order to pull the 69%number.
到目前为止，两者都没有效果。我不确定如何制作 find 以提取69%号码。
采纳答案by alecxe
soup.find("div", {"class":"real number"})['data-value']
soup.find("div", {"class":"real number"})['data-value']
Here you are searching for a divelement, but the spanhas the "real number" class in your example HTML data, try instead:
在这里，您正在搜索一个div元素，但span在您的示例 HTML 数据中具有“实数”类，请尝试：
soup.find("span", {"class": "real number", "data-value": True})['data-value']
Here we are also checking for presence of data-valueattribute.
在这里，我们还检查是否存在data-value属性。
To find elements having "real number" or "fake number" classes, you can make a CSS selector:
要查找具有“实数”或“假数”类的元素，您可以创建一个CSS 选择器：
for elm in soup.select(".real.number,.fake.number"):
print(elm.get("data-value"))
To get the 69%value:
获取69%值：
soup.find("div", {"class": "percentage good"}).get_text(strip=True)
Or, a CSS selector:
或者，一个 CSS 选择器：
soup.select_one(".percentage.good").get_text(strip=True)
soup.select_one(".score .percentage").get_text(strip=True)
Or, locating the h6element having Audit scoretext and then getting the preceding sibling:
或者，定位h6具有Audit score文本的元素，然后获取前面的兄弟元素：
soup.find("h6", text="Audit score").previous_sibling.get_text(strip=True)
