urllib

urllib.request is in the standard library, so this example needs nothing but jsonrpcclient. It sends the request as a JSON string and parses the bytes that come back:

import logging
from urllib.request import Request, urlopen

from jsonrpcclient import Error, Ok, parse_json, request_json

http_request = Request(
    "http://localhost:8000/",
    data=request_json("ping").encode(),
    headers={"Content-Type": "application/json"},
)
# urlopen raises urllib.error.HTTPError for a 4xx or 5xx status.
with urlopen(http_request, timeout=10) as http_response:
    parsed = parse_json(http_response.read())
if isinstance(parsed, Ok):
    print(parsed.result)
elif isinstance(parsed, Error):
    logging.error(parsed.message)

urlopen raises urllib.error.HTTPError for an HTTP error status and urllib.error.URLError if it can't connect. Both are OSError subclasses.

For a batch, send json.dumps([request(...), ...]) and handle the reply as shown in Batches.