Minimalistic example printing the info of button pressed on switch

examples/buttonprinter.py

@@ -0,0 +1,89 @@
+import asyncio
+import async_timeout
+import aiohttp
+import logging
+import functools
+from pydeconz import (
+    DeconzSession,
+    errors,
+    sensor,
+    websocket,
+    ERRORS,
+)
+
+
+HOST = "192.168.0.2"   # your host goes here
+PORT = "80"              # your port here 
+API_KEY = "apikey" # your api key goes here see https://dresden-elektronik.github.io/deconz-rest-doc/getting_started/
+
+
+LOGGER = logging.getLogger(__name__)
+
+class ButtonPrinter:
+    def buttonCallback(self, switch):
+        print(f"{switch.name} : {switch.unique_id} state: {switch.state}")
+
+
+async def deconz_gateway(
+    session: aiohttp.ClientSession,
+    host: str,
+    port: int,
+    api_key: str
+) -> DeconzSession:
+    """Create a gateway object and verify configuration."""
+    deconz = DeconzSession(session, host, port, api_key)
+
+    try:
+        with async_timeout.timeout(5):
+            await deconz.refresh_state()
+        return deconz
+
+    except errors.Unauthorized:
+        LOGGER.exception("Invalid API key for deCONZ gateway")
+
+    except (asyncio.TimeoutError, errors.RequestError):
+        LOGGER.error("Error connecting to deCONZ gateway")
+
+    return None
+
+
+async def asyncmain():
+    clsession = aiohttp.ClientSession()
+    btnprinter = ButtonPrinter()
+    gateway = await deconz_gateway(
+        session=clsession,
+        host=HOST,
+        port=PORT,
+        api_key=API_KEY
+    )
+    if not gateway:
+        LOGGER.error("Couldn't connect to deCONZ gateway")
+        await clsession.close()
+        return
+
+    gateway.start()
+
+
+    for sensor_key in gateway.sensors:
+        curr_sensor = gateway.sensors[sensor_key]
+        if isinstance(curr_sensor,sensor.Switch):            
+            print(f"Found Switch {curr_sensor.name} : {curr_sensor.unique_id}")
+            # this effectively creates a new function which retains the curr_sensor to be passed into the method above
+            curr_callback = functools.partial(btnprinter.buttonCallback,curr_sensor)
+            curr_sensor.register_callback(curr_callback) 
+
+
+    try:
+        while True:
+            await asyncio.sleep(1)
+
+
+    except asyncio.CancelledError:
+        pass
+
+    finally:
+        gateway.close()
+        await clsession.close()
+
+if __name__ == "__main__":
+    asyncio.run(asyncmain())