如何从python opcua中的服务器中获取客户端中的值

Question

我尝试过：

client = Client("opc.tcp://192.168.0.104:16664")
try:
    client.connect()
    root = client.get_root_node()
    value = ua.Variant
    clt_1 = client.get_server_node().get_children()
    var = ua.VariantType
 finally:
    client.disconnect()

使用ua_variant或ua.Variant