A non working gRPC server init

multiprocessing-server-main.py

def main():
    """
    Inspired from https://github.com/grpc/grpc/blob/master/examples/python/multiprocessing/server.py
    """
    logger.info(f'Initializing server with {NUM_WORKERS} workers')
    with _reserve_port() as port:
        bind_address = f"[::]:{port}"
        logger.info(f"Binding to {bind_address}")
        sys.stdout.flush()
        workers = []
        for _ in range(NUM_WORKERS):
            worker = multiprocessing.Process(target=_run_server,
                                             args=(bind_address,))
            worker.start()
            workers.append(worker)
        for worker in workers:
            worker.join()