We’ll use Werkzeug to take JSON-RPC requests. It should respond to ‘ping’ with ‘pong’.

Install Werkzeug to take requests and jsonrpcserver to process them:

$ pip install werkzeug jsonrpcserver

Create a server.py:

from werkzeug.wrappers import Request, Response
from werkzeug.serving import run_simple
from jsonrpcserver import method, dispatch

@method
def ping():
    return "pong"

@Request.application
def application(request):
    response = dispatch(request.data.decode())
    return Response(str(response), response.http_status, mimetype="application/json")

if __name__ == "__main__":
    run_simple("localhost", 5000, application)

Start the server:

$ python server.py
 * Running on http://localhost:5000/ (Press CTRL+C to quit)

Client

Use jsonrpcclient to send requests:

$ pip install "jsonrpcclient[requests]"
$ jsonrpc --send http://localhost:5000 ping
'pong'