HTMLParser error

[jonbutler88 at googlemail.com]

Just writing a simple website spider in python, keep getting these
errors, not sure what to do. The problem seems to be in the feed()
function of htmlparser.

Traceback (most recent call last):
  File "spider.py", line 38, in <module>
    s.crawl(site)
  File "spider.py", line 30, in crawl
    self.parse(url)
  File "spider.py", line 21, in parse
    self.feed(urlopen('http://' + page).read())
  File "/Library/Frameworks/Python.framework/Versions/2.5/lib/
python2.5/HTMLParser.py", line 107, in feed
    self.rawdata = self.rawdata + data
AttributeError: Spider instance has no attribute 'rawdata'

Any ideas of how to fix this? Im using python 2.5.2 on mac osx