queue = Queue()
max_threads = 2
routes = ['1.1.1.1','2.2.2.2','3.3.3.3','4.4.4.4','5.5.5.5','6.6.6.6','7.7.7.7','8.8.8.8']

def checkRoutes(i, q):
    # while q.qsize() != 0: # doesn't work, script never ends
    # while not q.empty():  # doesn't work, no output
    while True:             # doesn't work, script never ends
            route = q.get()
            print("[%s/%s] Checking route: %s on CCS" % (i,q.qsize(),route))
        q.task_done()

def main(args):
    '''setup threads'''
    for i in range(max_threads):
        worker = Thread(target=checkRoutes, args=(i, queue,))
        # worker.setDaemon(True)
        worker.start()

    '''feed queue'''
    for r in routes:
        queue.put(route)

    queue.join()