gathering zen

#!/usr/bin/env python

import HTMLParser
import urllib2

class ZenParser(HTMLParser.HTMLParser):
    def __init__(self, *args, **kwargs):
        HTMLParser.HTMLParser.__init__(self, *args, **kwargs)
        self.state = 'START'
    def handle_data(self, data):
        if self.state == 'CHECKING HEADER':
            if data.strip() == 'The Zen of Python':
                self.state = 'AWAITING ZEN'
            else:
                self.state = 'START'
        elif self.state == 'GATHERING ZEN':
            self.zen = data
            self.state = 'GOT ZEN'
    def handle_starttag(self, tag, attrs):
        if self.state == 'START' and tag == 'h3':
            self.state = 'CHECKING HEADER'
        elif self.state == 'AWAITING ZEN' and tag == 'pre':
            self.state = 'GATHERING ZEN'

def zen():
    r = urllib2.urlopen('http://legacy.python.org/dev/peps/pep-0020/')
    parser = ZenParser()
    parser.feed(r.read())
    return '\n'.join(line.lstrip() for line in parser.zen.splitlines())

print zen()