feed finder in python

Here is a python code snippet which finds the RSS link in any web site...

import sys
from urllib2 import urlopen
from urlparse import urljoin
from HTMLParser import HTMLParser, HTMLParseError

class FeedAutodiscoveryParser(HTMLParser):
    # These are the MIME types of links accepted as feeds
    FEED_TYPES = ('application/rss+xml',
                  'text/xml',
                  'application/atom+xml',
                  'application/x.atom+xml',
                  'application/x-atom+xml')
    def __init__(self, base_href):
        HTMLParser.__init__(self)
        self.base_href = base_href
        self.feeds = []
    def handle_starttag(self, tag, attrs_tup):
        tag = tag.lower()
        attrs = dict([(k.lower(), v) for k,v in attrs_tup])
        if tag == "base" and 'href' in attrs:
            self.base_href = attrs['href']
        if tag == "link":
            rel = attrs.get("rel", "")
            type = attrs.get("type", "")
            title = attrs.get("title", "")
            href = attrs.get("href", "")
            if rel == "alternate" and type in self.FEED_TYPES:
                self.feeds.append({
                    'type' : type,
                    'title' : title,
                    'href' : href
                })
def getFeedsDetail(url):
    data = urlopen(url).read()
    parser = FeedAutodiscoveryParser(url)
    try:
        parser.feed(data)
    except HTMLParseError:
        pass
    for feed in parser.feeds:
        feed['href'] = urljoin(parser.base_href, feed['href'])
    return parser.feeds
def getFeeds(url):
        return [ x['href'] for x in getFeedsDetail(url) ]


def main():
    url = sys.argv[1]
    feeds = getFeedsDetail(url)
    print
    print "Site %s : " % url
    print "###########################################"
    print
    for feed in feeds:
        print "Title : '%(title)s' \nType :  %(type)s \nURI : %(href)s" % feed
        print "------------------------------------------------------------------------"
    print

if __name__ == "__main__":
    main()

The use is...

F:\Python26>python minifeedfinder.py http://www.timesofindia.com/

Site http://www.timesofindia.com/ :
###########################################

Title : ''
Type :  application/rss+xml
URI : http://www.timesofindia.com/rssfeedsdefault.cms
------------------------------------------------------------------------


F:\Python26>python minifeedfinder.py http://asitdhal.blogspot.com/

Site http://asitdhal.blogspot.com/ :
###########################################

Title : 'Life like this - Atom'
Type :  application/atom+xml
URI : http://asitdhal.blogspot.com/feeds/posts/default
------------------------------------------------------------------------
Title : 'Life like this - RSS'
Type :  application/rss+xml
URI : http://asitdhal.blogspot.com/feeds/posts/default?alt=rss
------------------------------------------------------------------------

The equivalent php code is in the following link...
http://kodeyard.blogspot.com/2009/10/feed-finder-in-php.html