How to use the jsonrpcclient.Request function in jsonrpcclient

def _create_jsonrpc_params(self, method: RestMethod, params: Optional[NamedTuple]):
        # 'vars(namedtuple)' does not working in Python 3.7.4
        # noinspection PyProtectedMember
        params = params._asdict() if params else None
        if params:
            params = { k: v for k, v in params.items() if v is not None}
            if "from_" in params:
                params["from"] = params.pop("from_")

        return Request(method.value.name, params) if params else Request(method.value.name)

def checkHeight(private_client, public_client, timeout=TIMEOUT):
    result_private = private_client.send(
        jsonrpcclient.Request("getRootBlockByHeight"),
        timeout=timeout,)
    result_public = public_client.send(
        jsonrpcclient.Request("getRootBlockByHeight"),
        timeout=timeout,)
    return {
        "height": int(result_private["height"], 16),
        "currentHeight": int(result_public["height"], 16),
    }

def get_work_rpc(
    full_shard_id: Optional[int],
    host: str = "localhost",
    jrpc_port: int = 38391,
    timeout=TIMEOUT,
) -> MiningWork:
    jrpc_url = "http://{}:{}".format(host, jrpc_port)
    cli = get_jsonrpc_cli(jrpc_url)
    header_hash, height, diff = cli.send(
        jsonrpcclient.Request(
            "getWork", hex(full_shard_id) if full_shard_id is not None else None
        ),
        timeout=timeout,
    )
    return MiningWork(bytes.fromhex(header_hash[2:]), int(height, 16), int(diff, 16))

def submit_work_rpc(
    full_shard_id: Optional[int],
    res: MiningResult,
    host: str = "localhost",
    jrpc_port: int = 38391,
    timeout=TIMEOUT,
) -> bool:
    jrpc_url = "http://{}:{}".format(host, jrpc_port)
    cli = get_jsonrpc_cli(jrpc_url)
    success = cli.send(
        jsonrpcclient.Request(
            "submitWork",
            hex(full_shard_id) if full_shard_id is not None else None,
            "0x" + res.header_hash.hex(),
            hex(res.nonce),
            "0x" + res.mixhash.hex(),
        ),
        timeout=timeout,
    )
    return success

def checkHeight(private_client, public_client, timeout=TIMEOUT):
    result_private = private_client.send(
        jsonrpcclient.Request("getRootBlockByHeight"),
        timeout=timeout,)
    result_public = public_client.send(
        jsonrpcclient.Request("getRootBlockByHeight"),
        timeout=timeout,)
    return {
        "height": int(result_private["height"], 16),
        "currentHeight": int(result_public["height"], 16),
    }