Extracting Data from XML: The program will prompt for a URL, read the XML data from that URL using urllib and then parse and extract the comment counts from the XML data, compute the sum of the numbers in the file.

xmlscraping.py

import urllib							#importing urllib
import xml.etree.ElementTree as ET		#importing xml library

url = raw_input("Enter the URL:")		#requesting a xml file
#read the file and get the comment tag
data = urllib.urlopen(url).read()
tree = ET.fromstring(data)
lst = tree.findall('.//comment')

count = 0
#Look through all the <comment> tags and find the <count> values sum the numbers
for item in lst:
    count = count + int(item.find('count').text)
	
print count