gistfile1.txt

import urllib2, simplejson as json

manager = urllib2.HTTPPasswordMgrWithDefaultRealm()
manager.add_password(None, 'https://robot-ws.your-server.de', 'login', 'password')
handler = urllib2.HTTPBasicAuthHandler(manager)
opener = urllib2.build_opener(handler)

def get_rdns(addr):
	try:
		rdns = opener.open('https://robot-ws.your-server.de/rdns/'+addr)
		ipandreverse = json.load(rdns)
		return ipandreverse["rdns"]["ip"]+" "+ipandreverse["rdns"]["ptr"]
        except urllib2.HTTPError, error:
                return addr

result = opener.open('https://robot-ws.your-server.de/server')
jsondata = json.load(result)
for k,v in enumerate(jsondata):
	server = opener.open('https://robot-ws.your-server.de/server/'+v["server"]["server_ip"])
	data = json.load(server)
	tmp = data
	for i,addr in enumerate(data["server"]["ip"]):
		tmp["server"]["ip"][i] = get_rdns(addr)
	print json.dumps(tmp, sort_keys=True, indent=4)