Searching through webpage

Hey I'm working on a Python project that requires I look through a webpage. I want to look through to find a specific text and if it finds the text, then it prints something out. If not, it prints out an error message. I've already trie开发者_如何学运维d with different modules such as libxml but I can't figure out how I would do it.

Could anybody lend some help?

You could do something simple like:

import urllib2
import re

html_content = urllib2.urlopen('http://www.domain.com').read()

matches = re.findall('regex of string to find', html_content);

if len(matches) == 0: 
   print 'I did not find anything'
else:
   print 'My string is in the html'

lxml is awesome: http://lxml.de/parsing.html

I use it regularly with xpath for extracting data from the html.

The other option is http://www.crummy.com/software/BeautifulSoup/ which is great as well.