Since the official WikiLeaks page has changed, the previous script needs to be updated. Here it is:

import urllib, piksemel, re

wleaks = int(re.search(r"(d+) / [0-9,]+", piksemel.parseString(urllib.urlopen("http://www.wikileaks.ch/cablegate.html").read()).getTag("body").getTag("div").getTag("div").getTag("a").nextTag().getTag("p").toString()).groups()[0])

Please remember to install piksemel module.