gistfile1.txt

import json
import sys
import urllib2

top_level_url = 'https://crash-stats.mozilla.com'

opener = urllib2.build_opener()
urllib2.install_opener(opener)

bad_addons = [line.strip() for line in open('bad_addons.txt')]

for ooid in sys.stdin:
  full_url = '/'.join([top_level_url, 'dumps', ooid]).rstrip()
  data = json.load(opener.open(full_url + '.jsonz'))

  if 'addons' not in data:
    print 'Missing addon field found for %s' % ooid,
  elif data['addons'] == []:
    print 'No addons found for %s' % ooid,

  for addon in data['addons']:
    addon_id,version = addon
    if addon_id in bad_addons:
      print 'Bad addon found for %s' % ooid,

in the case where 'addons' is not in data, line 21 will raise a KeyError and halt the execution of your script