lastTime = time.time()
regionIds = [10000002] # REGIONID LIST GOES HERE
typeIds = [198] # TYPEID LIST GOES HERE
for regionId in regionIds:
    for typeId in typeIds:
        try:
            url = 'https://public-crest.eveonline.com/market/%i/types/%i/history/' % (regionId, typeId)
            resp = urllib2.urlopen(url, timeout=10)
            hist = json.load(resp)
            turnover = sum(map(lambda x: x['avgPrice'] * x['volume'], hist['items'])) if hist['totalCount'] > 0 else 0
        except Exception as e:
            # Handle exceptions
            pass
        nextTime = lastTime + 1.0 / 25.0
        time.sleep(max(0.0, nextTime - time.time()))
        lastTime = nextTime