Question

我是美女汤的新手，我正在试图弄清楚如何从嵌套数组中提取网站。该网站可在“track-visit-website”课程下找到两次。

这不是关于如何拉出hrefs的问题的重复。我已经在这个页面上成功完成了。我试图孤立实际的公司网站。

我尝试了几个代码，但无法使其正常工作。这是一个例子：

print(item.contents[2].find_all("a", {"class": "track-visit-website"})[0].a)

该网站为YP.com Septic Search

以下是网站上其中一个项目的代码：

<div class="info">
<h3 class="n">
<div class="info-section info-primary">
<p class="adr" itemprop="address" itemtype="http://schema.org/PostalAddress" itemscope="">
<span class="street-address" itemprop="streetAddress">2806 Farview Dr</span>
<span class="locality" itemprop="addressLocality">Fort Collins, </span>
<span itemprop="addressRegion">CO</span>
<span itemprop="postalCode">80524</span>
</p>
<div class="phones phone primary" itemprop="telephone">(970) 829-0852</div>
</div>
<div class="info-section info-secondary">
<div class="categories">
<div class="links">
<a class="track-visit-website" data-analytics="{"click_id":6,"act":2,"dku":"http://www.affordablesepticanddraincleaning.com","FL":"url","TL":"off","target":"website","LOC":"http://www.affordablesepticanddraincleaning.com"}" target="_blank" rel="nofollow" href="http://www.affordablesepticanddraincleaning.com" data-impressed="1">Website</a>
<a class="track-map-it directions" data-analytics="{"click_id":13,"target":"website","act":4}" href="/listings/1000775636908/directions" data-impressed="1">Directions</a>
<a class="track-more-info" data-analytics="{"click_id":7,"target":"moreInfo","act":1,"FL":"list"}" href="/fort-collins-co/mip/affordable-septic-drain-cleaning-llc-505109997?lid=1000775636908" data-impressed="1">More Info</a>
</div>

Answer 1

将此代码段复制到python文件并运行它

import re

content = """
<div class="info">
<h3 class="n">
<div class="info-section info-primary">
<p class="adr" itemprop="address" itemtype="http://schema.org/PostalAddress" itemscope="">
<span class="street-address" itemprop="streetAddress">2806 Farview Dr</span>
<span class="locality" itemprop="addressLocality">Fort Collins, </span>
<span itemprop="addressRegion">CO</span>
<span itemprop="postalCode">80524</span>
</p>
<div class="phones phone primary" itemprop="telephone">(970) 829-0852</div>
</div>
<div class="info-section info-secondary">
<div class="categories">
<div class="links">
<a class="track-visit-website" data-analytics="{"click_id":6,"act":2,"dku":"http://www.affordablesepticanddraincleaning.com","FL":"url","TL":"off","target":"website","LOC":"http://www.affordablesepticanddraincleaning.com"}" target="_blank" rel="nofollow" href="http://www.affordablesepticanddraincleaning.com" data-impressed="1">Website</a>
<a class="track-map-it directions" data-analytics="{"click_id":13,"target":"website","act":4}" href="/listings/1000775636908/directions" data-impressed="1">Directions</a>
<a class="track-more-info" data-analytics="{"click_id":7,"target":"moreInfo","act":1,"FL":"list"}" href="/fort-collins-co/mip/affordable-septic-drain-cleaning-llc-505109997?lid=1000775636908" data-impressed="1">More Info</a>
</div>
"""

websites = set(re.findall(r'http://[a-zA-Z0-9\.]*\.[a-z]{2,}',content)) # find all urls in the content
websites = list(websites)

print(websites)  # or in python2 => print websites

现在找到一种方法将其合并到您的代码中，获取html，将其保存为内容，正则表达式并保存到文件

网页抓取你必须知道正则表达式

阅读正则表达式，这里有一个很好的教程regex tutorial

在美丽的汤中提取链接

1 个答案: