Improve (r)split performance (#162418)

tests/components/portainer/test_button.py

@@ -91,7 +91,7 @@ async def test_buttons_containers_exceptions(
     """Test that Portainer buttons, but this time when they will do boom for sure."""
     await setup_integration(hass, mock_config_entry)
 
-    action = client_method.split("_")[0]
+    action = client_method.split("_", maxsplit=1)[0]
     entity_id = f"button.practical_morse_{action}_container"
 
     method_mock = getattr(mock_portainer_client, client_method)

tests/components/sonos/conftest.py

@@ -295,7 +295,7 @@ class SoCoMockFactory:
         # Generate a different MAC for the non-default speakers.
         # otherwise new devices will not be created.
         if ip_address != "192.168.42.2":
-            last_octet = ip_address.split(".")[-1]
+            last_octet = ip_address.rsplit(".", maxsplit=1)[-1]
             my_speaker_info["mac_address"] = f"00-00-00-00-00-{last_octet.zfill(2)}"
         mock_soco.get_speaker_info = Mock(return_value=my_speaker_info)
         mock_soco.add_to_queue = Mock(return_value=10)