Kimsufi KS-1 availability checker

#!/bin/env python
# -*- coding: utf-8 -*-

import json

import urllib

with open('av.txt', 'w') as output:
        data = urllib.urlopen('https://ws.ovh.com/dedicated/r2/ws.dispatcher/getAvailability2?callback=Request.JSONP.request_map.request_0').read()
        data = str(data)[36:-2]
        availability = json.loads(data)['answer']['availability']

for item in availability:
        if item['reference'] == '142sk1':
                for zone in item['zones']:
                    if zone['availability'] != 'unavailable':
                        print(zone['zone'], zone['availability'])