def setUpModule():
    port = 8888
    while True:
        if not is_used(port):
            break
        port += 1
            
    server = multiprocessing.Process(target=run_server, args=(port,))
    server.start()
    global PID, URL
    URL = port%'http://localhost:%s'
    PID = server.pid
dataset/ETHPy150Open wecatch/app-turbo/turbo/test/app_test.py/setUpModule/swapped operands of `%`