XML : How do I get the numbers out of this piece of data?

I've been given an assignment where I have to extract the numbers out of this xml file (https://pr4e.dr-chuck.com/tsugi/mod/python-data/data/comments_42.xml) and then sum them up. The problem is I'm getting an attribute error when I try to do a for loop to get at the data.

  import urllib  import xml.etree.ElementTree as ET    url = raw_input('Enter location: ')  print 'Retrieving', url  uh = urllib.urlopen(url)  data = uh.read()  print 'Retrieved',len(data),'characters'  tree = ET.fromstring(data)  lst = tree.findall('.//count')  print 'Count:', len(lst)  for item in lst:      print 'name', item.find('count').text     

I should be extracting text from inside the count tag:

  <comment>    <name>Matthias</name>    <count>97</count>  </comment>    

Can anyone show me how it's done? Thanks in advance.