Getting BeautifulSoup to find a specific <p>

Posted by Ryan on Stack Overflow See other posts from Stack Overflow or by Ryan
Published on 2010-03-26T06:32:42Z Indexed on 2010/03/26 7:53 UTC
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python

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beautifulsoup

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html-content-extraction

I'm trying to put together a basic HTML scraper for a variety of scientific journal websites, specifically trying to get the abstract or introductory paragraph.

The current journal I'm working on is Nature, and the article I've been using as my sample can be seen at http://www.nature.com/nature/journal/v463/n7284/abs/nature08715.html.

I can't get the abstract out of that page, however. I'm searching for everything between the <p class="lead">...</p> tags, but I can't seem to figure out how to isolate them. I thought it would be something simple like

from BeautifulSoup import BeautifulSoup
import re
import urllib2

address="http://www.nature.com/nature/journal/v463/n7284/full/nature08715.html"
html = urllib2.urlopen(address).read()
soup = BeautifulSoup(html)

abstract = soup.find('p', attrs={'class' : 'lead'})
print abstract

Using Python 2.5, BeautifulSoup 3.0.8, running this returns 'None'. I have no option of using anything else that needs to be compiled/installed (like lxml). Is BeautifulSoup confused, or am I?

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