Python：如何使用 BeautifulSoup 从 HTML 页面中提取 URL？
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Python: How to extract URL from HTML Page using BeautifulSoup?
提问by daydreamer
I have a HTML Page with multiple divs like
我有一个带有多个 div 的 HTML 页面，例如
<div class="article-additional-info">
A peculiar situation arose in the Supreme Court on Tuesday when two lawyers claimed to be the representative of one of the six accused in the December 16 gangrape case who has sought shifting of t...
<a class="more" href="http://www.thehindu.com/news/national/gangrape-case-two-lawyers-claim-to-be-engaged-by-accused/article4332680.ece">
<span class="arrows">?</span>
</a>
</div>
<div class="article-additional-info">
Power consumers in the city will have to brace for spending more on their monthly bills as all three power distribution companies – the Anil Ambani-owned BRPL and BYPL and the Tatas-owned Tata Powe...
<a class="more" href="http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece">
<a class="commentsCount" href="http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece#comments">
</div>
and I need to get the <a href=>value for all the divs with class article-additional-infoI am new to BeautifulSoup
我需要获取<a href=>所有类的值article-additional-info我是 BeautifulSoup 的新手
so I need the the urls
所以我需要网址
"http://www.thehindu.com/news/national/gangrape-case-two-lawyers-claim-to-be-engaged-by-accused/article4332680.ece"
"http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece"
What is the best way to achieve this?
实现这一目标的最佳方法是什么？
回答by RocketDonkey
According to your criteria, it returns three URLs (not two) - did you want to filter out the third?
根据您的标准，它返回三个 URL（不是两个）-您是否要过滤掉第三个？
Basic idea is to iterate through the HTML, pulling out only those elements in your class, and then iterating through all of the links in that class, pulling out the actual links:
基本思想是遍历 HTML，仅提取类中的那些元素，然后遍历该类中的所有链接，提取实际链接：
In [1]: from bs4 import BeautifulSoup
In [2]: html = # your HTML
In [3]: soup = BeautifulSoup(html)
In [4]: for item in soup.find_all(attrs={'class': 'article-additional-info'}):
...: for link in item.find_all('a'):
...: print link.get('href')
...:
http://www.thehindu.com/news/national/gangrape-case-two-lawyers-claim-to-be-engaged-by-accused/article4332680.ece
http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece
http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece#comments
This limits your search to just those elements with the article-additional-infoclass tag, and inside of there looks for all anchor (a) tags and grabs their corresponding hreflink.
这将您的搜索限制在那些带有article-additional-infoclass 标签的元素上，并在其中查找所有锚 ( a) 标签并获取它们对应的href链接。
回答by TerryA
from bs4 import BeautifulSoup as BS
html = # Your HTML
soup = BS(html)
for text in soup.find_all('div', class_='article-additional-info'):
for links in text.find_all('a'):
print links.get('href')
Which prints:
哪个打印：
http://www.thehindu.com/news/national/gangrape-case-two-lawyers-claim-to-be-engaged-by-accused/article4332680.ece
http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece
http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece#comments
回答by daydreamer
After working with the documentation, I did it the following way, thank you all for your answers, I appreciate them
使用文档后，我按照以下方式进行操作，谢谢大家的回答，我很感激
>>> import urllib2
>>> f = urllib2.urlopen('http://www.thehindu.com/news/cities/delhi/?union=citynews')
>>> soup = BeautifulSoup(f.fp)
>>> for link in soup.select('.article-additional-info'):
... print link.find('a').attrs['href']
...
http://www.thehindu.com/news/cities/Delhi/airport-metro-express-is-back/article4335059.ece
http://www.thehindu.com/news/cities/Delhi/91-more-illegal-colonies-to-be-regularised/article4335069.ece
http://www.thehindu.com/news/national/gangrape-case-two-lawyers-claim-to-be-engaged-by-accused/article4332680.ece
http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece
http://www.thehindu.com/news/cities/Delhi/nurses-women-groups-demand-safety-audit-of-workplaces/article4331470.ece
http://www.thehindu.com/news/cities/Delhi/delhi-bpl-families-to-get-12-subsidised-lpg-cylinders/article4328990.ece
http://www.thehindu.com/news/cities/Delhi/shias-condemn-violence-against-religious-minorities/article4328276.ece
http://www.thehindu.com/news/cities/Delhi/new-archbishop-of-delhi-takes-over/article4328284.ece
http://www.thehindu.com/news/cities/Delhi/delhi-metro-to-construct-subway-without-disrupting-traffic/article4328290.ece
http://www.thehindu.com/life-and-style/Food/going-for-the-kill-in-patparganj/article4323210.ece
http://www.thehindu.com/news/cities/Delhi/fire-at-janpath-bhavan/article4335068.ece
http://www.thehindu.com/news/cities/Delhi/fiveyearold-girl-killed-as-school-van-overturns/article4335065.ece
http://www.thehindu.com/news/cities/Delhi/real-life-stories-of-real-women/article4331483.ece
http://www.thehindu.com/news/cities/Delhi/women-councillors-allege-harassment-by-male-councillors-of-rival-parties/article4331471.ece
http://www.thehindu.com/news/cities/Delhi/airport-metro-resumes-today/article4331467.ece
http://www.thehindu.com/news/national/hearing-today-on-plea-to-shift-trial/article4328415.ece
http://www.thehindu.com/news/cities/Delhi/protestors-demand-change-in-attitude-of-men-towards-women/article4328277.ece
http://www.thehindu.com/news/cities/Delhi/bjp-promises-5-lakh-houses-for-poor-on-interestfree-loans/article4328280.ece
http://www.thehindu.com/life-and-style/metroplus/papad-bidi-and-a-dacoit/article4323219.ece
http://www.thehindu.com/life-and-style/Food/gharana-of-food-not-just-music/article4323212.ece
>>>
回答by FundasMadeEasy
In [4]: for item in soup.find_all(attrs={'class': 'article-additional-info'}):
...: for link in item.find_all('a'):
...: print link.get('href')
...:
http://www.thehindu.com/news/national/gangrape-case-two-lawyers-claim-to-be-engaged-by-accused/article4332680.ece
http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece
http://www.thehindu.com/news/cities/Delhi/power-discoms-demand-yet-another-hike-in-charges/article4331482.ece#comments
