OpenPlotter data to Python

[Jodel]

Sorry for such basic questions but obviously my knowledge of both SignalK and Python is limited .
 I have managed to connect to SignalK with the following:

import websocket
ws = websocket.WebSocket()
ws.connect("ws://localhost:3000/signalk/v1/stream")
print(ws.recv())
ws.close()

This returns:
{"name":"signalk-server","version":"1.37.6","self":"vessels.urn:mrnignalk:uuid:1a221f54-3677-4260-ab71-cbd99552f5a4","roles":["master","main"],"timestamp":"2021-02-10T18:33:13.731Z"}

My next problem - What is the correct url to get all the data streaming?

When readings the docs on signalK it says 

• ws://hostname/signalk/«version»/stream?subscribe=all
  

However when I try

import websocket

ws = websocket.WebSocket()
ws.connect("ws://localhost/signalk/v1/stream?subscribe=all")
print(ws.recv())
ws.close()

I get errors as below:
raceback (most recent call last):

  File "/home/pi/Python/Test2.py", line 4, in <module>
    ws.connect("ws://localhost/signalk/v1/stream?subscribe=all")
  File "/usr/lib/python3/dist-packages/websocket/_core.py", line 219, in connect
    options.pop('socket', None))
  File "/usr/lib/python3/dist-packages/websocket/_http.py", line 120, in connect
    sock = _open_socket(addrinfo_list, options.sockopt, options.timeout)
  File "/usr/lib/python3/dist-packages/websocket/_http.py", line 190, in _open_socket
    raise err
  File "/usr/lib/python3/dist-packages/websocket/_http.py", line 170, in _open_socket
    sock.connect(address)
ConnectionRefusedError: [Errno 111] Connection refused

I seem to have an error in      ws.connect("ws://localhost/signalk/v1/stream?subscribe=all")

What is the correct format?
Thanks, Jodel