poll_devname.py

from time import sleep, time
from pathlib import Path
from notifypy import Notify

from relaykeysclient import RelayKeysClient

client = RelayKeysClient(url="http://127.0.0.1:5383/")

def send_devname_notification(device_name):
    notification = Notify()
    notification.application_name = "Relaykeys"
    notification.title = ""
    notification.icon = str(Path(__file__).resolve().parent / "resources" / "logo.png")
    notification.message = "Connected to {}.".format(device_name)
    
    notification.send()

polling_start_timestamp = time()
timeout_sec = 40

while True:
    if time() - polling_start_timestamp > timeout_sec:
        break # timeout

    ret = client.ble_cmd("devname")
    if 'result' in ret:
        devname = ret["result"]
        if devname != 'NONE':
            send_devname_notification(devname)
            break

    sleep(2)