Not needed.

coupler/opc-ua-client/opc-ua-client.py

-"""
-Simple OPC UA client.
-"""
-from opcua import Client
-
-url = "opc.tcp://localhost:4840"
-client = Client(url)
-client.connect()
-print("Client connected.")
-
-while 1:
-    Temp = Temp.get_node("ns=2;i=3") # XXX: get from OPC UA server
-    temperature = Temp.get_value()
-    print(temperature)