docs: fix most asyncio DeprecationWarnings

Calling get_event_loop() in Python 3.12 and newer when no event loop
is running is deprecated. The recommended option is to use asyncio.run()
instead.
examples/http_server_asyncio.py is not updated as the example
is quite broken as is so changing it without fixing the existing
problems is not wise.

README.md

@@ -87,7 +87,7 @@ async def main():
 
 
 if __name__ == "__main__":
-    asyncio.get_event_loop().run_until_complete(main())
+    asyncio.run(main())
 ```
 
 The optional list of MACs can be passed to the `get_data_async` function.
@@ -111,7 +111,7 @@ async def main():
 
 
 if __name__ == "__main__":
-    asyncio.get_event_loop().run_until_complete(main())
+    asyncio.run(main())
 ```
 
 The line `if __name__ == "__main__":` is required on Windows and macOS due to the way the `multiprocessing` library works. It is not required on Linux, but it is recommended. It is omitted from the rest of the examples below.
@@ -468,7 +468,7 @@ async def main():
 
 
 if __name__ == "__main__":
-    asyncio.get_event_loop().run_until_complete(main())
+    asyncio.run(main())
 ```
 
 Check [get_async_bleak](https://github.com/ttu/ruuvitag-sensor/blob/master/examples/get_async_bleak.py) and other async examples from [examples](https://github.com/ttu/ruuvitag-sensor/tree/master/examples) directory.

examples/find_tags_async_bleak.py

@@ -1,5 +1,5 @@
 """
-Asynchronous find RuuviTags
+Asynchronously find RuuviTags
 """
 
 import asyncio
@@ -11,8 +11,11 @@
 
 
 async def main():
-    await RuuviTagSensor.find_ruuvitags_async()
+    try:
+        await RuuviTagSensor.find_ruuvitags_async()
+    except asyncio.exceptions.CancelledError:
+        print("Scan stopped")
 
 
 if __name__ == "__main__":
-    asyncio.get_event_loop().run_until_complete(main())
+    asyncio.run(main())

examples/get_async_bleak.py

@@ -7,9 +7,12 @@
 
 
 async def main():
-    async for data in RuuviTagSensor.get_data_async():
-        print(data)
+    try:
+        async for data in RuuviTagSensor.get_data_async():
+            print(data)
+    except asyncio.exceptions.CancelledError:
+        print("Scan stopped")
 
 
 if __name__ == "__main__":
-    asyncio.get_event_loop().run_until_complete(main())
+    asyncio.run(main())

examples/get_first_async_bleak.py

@@ -21,4 +21,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    asyncio.get_event_loop().run_until_complete(main())
+    asyncio.run(main())

examples/rx_async.py

@@ -10,7 +10,4 @@ async def main():
 
 
 if __name__ == "__main__":
-    # https://stackoverflow.com/a/56727859/1292530
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(main())
-    loop.run_forever()
+    asyncio.run(main())

examples/send_updated_async.py

@@ -78,5 +78,4 @@ def handle_new_data(new_data):
     executor = ProcessPoolExecutor()
     executor.submit(run_get_data_background, q)
 
-    loop = asyncio.get_event_loop()
-    loop.run_until_complete(handle_queue(q))
+    asyncio.run(handle_queue(q))

ruuvitag_sensor/__main__.py

@@ -75,6 +75,6 @@ def _sync_main_handle(arguments: argparse.Namespace):
         sys.exit(0)
 
     if is_async_adapter(ruuvitag_sensor.ruuvi.ble):
-        asyncio.get_event_loop().run_until_complete(_async_main_handle(args))
+        asyncio.run(_async_main_handle(args))
     else:
         _sync_main_handle(args)