VALUE!

import re
from dateutil import parser
import urllib2
pl = urllib2.urlopen('http://media.giantbomb.com/podcast/podcast.xml').readlines()
hours = 0
minutes = 0
seconds = 0
for l in pl:
    m = re.match('<itunes:duration>(.*)\</itunes:duration>',l)
    if m and m.group(1):
        bits = m.group(1).split(":")
        if len(bits) == 2:
            minutes += int(bits[0])
            seconds += int(bits[1])
        else:
            hours += int(bits[0])
            minutes += int(bits[1])
            seconds += int(bits[2])
            
print hours + float(minutes)/60 + float(seconds)/60/60