Read xml file and sum an attribute for Coursera Week 5

xml4localfile.py

import xml.etree.ElementTree as ET
#fname = raw_input('Enter the file name: ')
#fname = '/home/vagrant/Coursera/Week5/comments_42.xml'
fname = '/home/vagrant/Coursera/Week5/comments_318170.xml'
try:
    tree = ET.ElementTree(file=fname)
except:
    print 'File cannot be opened:', fname
    exit()
root = tree.getroot()
mycounter = 0
mysum = 0
#stuff = ET.fromstring(input)
lst = root.findall('comments/comment')
print 'Comment count:', len(lst)

for item in lst:
    #print 'Name', item.find('name').text
    #print 'Count', item.find('count').text
    mycounter = mycounter + 1
    mysum = mysum + int(item.find('count').text)
print mycounter
print mysum