parsing XML and sorting by class member sample

question_paser.py

__author__ = 'tani'
from xml.etree.ElementTree import *
from operator import itemgetter, attrgetter

class Question:
        def __init__(self, delayTime, comment):
            self.delayTime = delayTime
            self.comment = comment
        def __repr__(self):
            return repr((self.delayTime, self.comment))

tree = parse("question_selected_easy.xml")
elem = tree.getroot()

questionList = []

for e in elem.getiterator("Orca"):
    #print e.get("DelayTimeMS")
    #print e.get("Comment")

    q = Question(e.get("DelayTimeMS"), e.get("Comment"))
    questionList.append(q)

def numeric_compare(x, y):
    return int(x) - int(y)

sortedList = sorted(questionList, key=attrgetter('delayTime'), cmp=numeric_compare)

for q in sortedList:
    #print q.comment
    splitedComment = q.comment.split(" ")

    csvLine = splitedComment[0] + "," + splitedComment[1] + "," + splitedComment[2] + "," + q.delayTime
    if ( len(splitedComment) == 4 ):
        csvLine += "," + splitedComment[3]

    print csvLine