Use assignment expressions 30 (#58714)

homeassistant/components/aruba/device_tracker.py

@@ -125,8 +125,7 @@ class ArubaDeviceScanner(DeviceScanner):
 
         devices = {}
         for device in devices_result:
-            match = _DEVICES_REGEX.search(device.decode("utf-8"))
+            if match := _DEVICES_REGEX.search(device.decode("utf-8")):
-            if match:
                 devices[match.group("ip")] = {
                     "ip": match.group("ip"),
                     "mac": match.group("mac").upper(),

homeassistant/components/automation/__init__.py

@@ -156,9 +156,7 @@ def entities_in_automation(hass: HomeAssistant, entity_id: str) -> list[str]:
 
     component = hass.data[DOMAIN]
 
-    automation_entity = component.get_entity(entity_id)
+    if (automation_entity := component.get_entity(entity_id)) is None:
-
-    if automation_entity is None:
         return []
 
     return list(automation_entity.referenced_entities)
@@ -187,9 +185,7 @@ def devices_in_automation(hass: HomeAssistant, entity_id: str) -> list[str]:
 
     component = hass.data[DOMAIN]
 
-    automation_entity = component.get_entity(entity_id)
+    if (automation_entity := component.get_entity(entity_id)) is None:
-
-    if automation_entity is None:
         return []
 
     return list(automation_entity.referenced_devices)
@@ -218,9 +214,7 @@ def areas_in_automation(hass: HomeAssistant, entity_id: str) -> list[str]:
 
     component = hass.data[DOMAIN]
 
-    automation_entity = component.get_entity(entity_id)
+    if (automation_entity := component.get_entity(entity_id)) is None:
-
-    if automation_entity is None:
         return []
 
     return list(automation_entity.referenced_areas)

homeassistant/components/bond/light.py

@@ -180,8 +180,7 @@ class BondLight(BondBaseLight, BondEntity, LightEntity):
 
     async def async_turn_on(self, **kwargs: Any) -> None:
         """Turn on the light."""
-        brightness = kwargs.get(ATTR_BRIGHTNESS)
+        if brightness := kwargs.get(ATTR_BRIGHTNESS):
-        if brightness:
             await self._hub.bond.action(
                 self._device.device_id,
                 Action.set_brightness(round((brightness * 100) / 255)),

homeassistant/components/camera/__init__.py

@@ -275,9 +275,7 @@ def _get_camera_from_entity_id(hass: HomeAssistant, entity_id: str) -> Camera:
     if (component := hass.data.get(DOMAIN)) is None:
         raise HomeAssistantError("Camera integration not set up")
 
-    camera = component.get_entity(entity_id)
+    if (camera := component.get_entity(entity_id)) is None:
-
-    if camera is None:
         raise HomeAssistantError("Camera not found")
 
     if not camera.is_on:
@@ -596,9 +594,7 @@ class CameraView(HomeAssistantView):
 
     async def get(self, request: web.Request, entity_id: str) -> web.StreamResponse:
         """Start a GET request."""
-        camera = self.component.get_entity(entity_id)
+        if (camera := self.component.get_entity(entity_id)) is None:
-
-        if camera is None:
             raise web.HTTPNotFound()
 
         camera = cast(Camera, camera)

homeassistant/components/dlna_dmr/config_flow.py

@@ -81,8 +81,7 @@ class DlnaDmrFlowHandler(config_entries.ConfigFlow, domain=DOMAIN):
         LOGGER.debug("async_step_user: user_input: %s", user_input)
 
         if user_input is not None:
-            host = user_input.get(CONF_HOST)
+            if not (host := user_input.get(CONF_HOST)):
-            if not host:
                 # No device chosen, user might want to directly enter an URL
                 return await self.async_step_manual()
             # User has chosen a device, ask for confirmation

homeassistant/components/dlna_dmr/media_player.py

@@ -613,8 +613,7 @@ class DlnaDmrEntity(MediaPlayerEntity):
         metadata: dict[str, Any] = extra.get("metadata") or {}
 
         title = extra.get("title") or metadata.get("title") or "Home Assistant"
-        thumb = extra.get("thumb")
+        if thumb := extra.get("thumb"):
-        if thumb:
             metadata["album_art_uri"] = thumb
 
         # Translate metadata keys from HA names to DIDL-Lite names
@@ -666,8 +665,7 @@ class DlnaDmrEntity(MediaPlayerEntity):
         if not self._device:
             return None
 
-        play_mode = self._device.play_mode
+        if not (play_mode := self._device.play_mode):
-        if not play_mode:
             return None
 
         if play_mode == PlayMode.VENDOR_DEFINED:
@@ -700,8 +698,7 @@ class DlnaDmrEntity(MediaPlayerEntity):
         if not self._device:
             return None
 
-        play_mode = self._device.play_mode
+        if not (play_mode := self._device.play_mode):
-        if not play_mode:
             return None
 
         if play_mode == PlayMode.VENDOR_DEFINED:

homeassistant/components/hangouts/hangouts_bot.py

@@ -182,9 +182,7 @@ class HangoutsBot:
         """Detect a matching intent."""
         for intent_type, data in intents.items():
             for matcher in data.get(CONF_MATCHERS, []):
-                match = matcher.match(text)
+                if not (match := matcher.match(text)):
-
-                if not match:
                     continue
                 if intent_type == INTENT_HELP:
                     return await self.hass.helpers.intent.async_handle(

homeassistant/components/homekit_controller/config_flow.py

@@ -75,8 +75,7 @@ def ensure_pin_format(pin, allow_insecure_setup_codes=None):
 
     If incorrect code is entered, an exception is raised.
     """
-    match = PIN_FORMAT.search(pin.strip())
+    if not (match := PIN_FORMAT.search(pin.strip())):
-    if not match:
         raise aiohomekit.exceptions.MalformedPinError(f"Invalid PIN code f{pin}")
     pin_without_dashes = "".join(match.groups())
     if not allow_insecure_setup_codes and pin_without_dashes in INSECURE_CODES:

homeassistant/components/lcn/helpers.py

@@ -304,10 +304,8 @@ async def async_update_device_config(
     device_connection: DeviceConnectionType, device_config: ConfigType
 ) -> None:
     """Fill missing values in device_config with infos from LCN bus."""
-    is_group = device_config[CONF_ADDRESS][2]
-
     # fetch serial info if device is module
-    if not is_group:  # is module
+    if not (is_group := device_config[CONF_ADDRESS][2]):  # is module
         await device_connection.serial_known
         if device_config[CONF_HARDWARE_SERIAL] == -1:
             device_config[CONF_HARDWARE_SERIAL] = device_connection.hardware_serial

homeassistant/components/logbook/__init__.py

@@ -193,9 +193,7 @@ class LogbookView(HomeAssistantView):
     async def get(self, request, datetime=None):
         """Retrieve logbook entries."""
         if datetime:
-            datetime = dt_util.parse_datetime(datetime)
+            if (datetime := dt_util.parse_datetime(datetime)) is None:
-
-            if datetime is None:
                 return self.json_message("Invalid datetime", HTTPStatus.BAD_REQUEST)
         else:
             datetime = dt_util.start_of_local_day()
@@ -219,8 +217,7 @@ class LogbookView(HomeAssistantView):
             end_day = start_day + timedelta(days=period)
         else:
             start_day = datetime
-            end_day = dt_util.parse_datetime(end_time)
+            if (end_day := dt_util.parse_datetime(end_time)) is None:
-            if end_day is None:
                 return self.json_message("Invalid end_time", HTTPStatus.BAD_REQUEST)
 
         hass = request.app["hass"]

homeassistant/components/media_player/__init__.py

@@ -1026,8 +1026,7 @@ class MediaPlayerImageView(HomeAssistantView):
         media_content_id: str | None = None,
     ) -> web.Response:
         """Start a get request."""
-        player = self.component.get_entity(entity_id)
+        if (player := self.component.get_entity(entity_id)) is None:
-        if player is None:
             status = (
                 HTTPStatus.NOT_FOUND
                 if request[KEY_AUTHENTICATED]
@@ -1071,9 +1070,8 @@ async def websocket_handle_thumbnail(hass, connection, msg):
     Async friendly.
     """
     component = hass.data[DOMAIN]
-    player = component.get_entity(msg["entity_id"])
 
-    if player is None:
+    if (player := component.get_entity(msg["entity_id"])) is None:
         connection.send_message(
             websocket_api.error_message(msg["id"], ERR_NOT_FOUND, "Entity not found")
         )

homeassistant/components/media_source/models.py

@@ -93,9 +93,7 @@ class MediaSourceItem:
     @classmethod
     def from_uri(cls, hass: HomeAssistant, uri: str) -> MediaSourceItem:
         """Create an item from a uri."""
-        match = URI_SCHEME_REGEX.match(uri)
+        if not (match := URI_SCHEME_REGEX.match(uri)):
-
-        if not match:
             raise ValueError("Invalid media source URI")
 
         domain = match.group("domain")

homeassistant/components/melcloud/__init__.py

@@ -130,8 +130,7 @@ class MelCloudDevice:
     def device_info(self) -> DeviceInfo:
         """Return a device description for device registry."""
         model = None
-        unit_infos = self.device.units
+        if (unit_infos := self.device.units) is not None:
-        if unit_infos is not None:
             model = ", ".join([x["model"] for x in unit_infos if x["model"]])
         return DeviceInfo(
             connections={(CONNECTION_NETWORK_MAC, self.device.mac)},

homeassistant/components/octoprint/binary_sensor.py

@@ -68,8 +68,7 @@ class OctoPrintBinarySensorBase(CoordinatorEntity, BinarySensorEntity):
     @property
     def is_on(self):
         """Return true if binary sensor is on."""
-        printer = self.coordinator.data["printer"]
+        if not (printer := self.coordinator.data["printer"]):
-        if not printer:
             return None
 
         return bool(self._get_flag_state(printer))

homeassistant/components/octoprint/sensor.py

@@ -130,8 +130,7 @@ class OctoPrintJobPercentageSensor(OctoPrintSensorBase):
         if not job:
             return None
 
-        state = job.progress.completion
+        if not (state := job.progress.completion):
-        if not state:
             return 0
 
         return round(state, 2)

homeassistant/components/pandora/media_player.py

@@ -274,8 +274,7 @@ class PandoraMediaPlayer(MediaPlayerEntity):
 
     def _update_current_station(self, response):
         """Update current station."""
-        station_match = re.search(STATION_PATTERN, response)
+        if station_match := re.search(STATION_PATTERN, response):
-        if station_match:
             self._station = station_match.group(1)
             _LOGGER.debug("Got station as: %s", self._station)
         else:
@@ -283,8 +282,7 @@ class PandoraMediaPlayer(MediaPlayerEntity):
 
     def _update_current_song(self, response):
         """Update info about current song."""
-        song_match = re.search(CURRENT_SONG_PATTERN, response)
+        if song_match := re.search(CURRENT_SONG_PATTERN, response):
-        if song_match:
             (
                 self._media_title,
                 self._media_artist,
@@ -343,8 +341,7 @@ class PandoraMediaPlayer(MediaPlayerEntity):
         _LOGGER.debug("Getting stations: %s", station_lines)
         self._stations = []
         for line in station_lines.split("\r\n"):
-            match = re.search(r"\d+\).....(.+)", line)
+            if match := re.search(r"\d+\).....(.+)", line):
-            if match:
                 station = match.group(1).strip()
                 _LOGGER.debug("Found station %s", station)
                 self._stations.append(station)

homeassistant/components/recorder/statistics.py

@@ -620,8 +620,7 @@ def list_statistic_ids(
         platform_statistic_ids = platform.list_statistic_ids(hass, statistic_type)
 
         for statistic_id, info in platform_statistic_ids.items():
-            unit = info["unit_of_measurement"]
+            if (unit := info["unit_of_measurement"]) is not None:
-            if unit is not None:
                 # Display unit according to user settings
                 unit = _configured_unit(unit, units)
             platform_statistic_ids[statistic_id]["unit_of_measurement"] = unit

homeassistant/components/rflink/light.py

@@ -254,8 +254,7 @@ class ToggleRflinkLight(SwitchableRflinkDevice, LightEntity):
         """Adjust state if Rflink picks up a remote command for this device."""
         self.cancel_queued_send_commands()
 
-        command = event["command"]
+        if event["command"] == "on":
-        if command == "on":
             # if the state is unknown or false, it gets set as true
             # if the state is true, it gets set as false
             self._state = self._state in [None, False]

homeassistant/components/system_log/__init__.py

@@ -81,8 +81,7 @@ def _figure_out_source(record, call_stack, hass):
     for pathname in reversed(stack):
 
         # Try to match with a file within Home Assistant
-        match = re.match(paths_re, pathname[0])
+        if match := re.match(paths_re, pathname[0]):
-        if match:
             return [match.group(1), pathname[1]]
     # Ok, we don't know what this is
     return (record.pathname, record.lineno)

homeassistant/components/tado/climate.py

@@ -398,8 +398,7 @@ class TadoClimate(TadoZoneEntity, ClimateEntity):
 
     def set_temperature(self, **kwargs):
         """Set new target temperature."""
-        temperature = kwargs.get(ATTR_TEMPERATURE)
+        if (temperature := kwargs.get(ATTR_TEMPERATURE)) is None:
-        if temperature is None:
             return
 
         if self._current_tado_hvac_mode not in (

homeassistant/components/thomson/device_tracker.py

@@ -110,8 +110,7 @@ class ThomsonDeviceScanner(DeviceScanner):
 
         devices = {}
         for device in devices_result:
-            match = _DEVICES_REGEX.search(device.decode("utf-8"))
+            if match := _DEVICES_REGEX.search(device.decode("utf-8")):
-            if match:
                 devices[match.group("ip")] = {
                     "ip": match.group("ip"),
                     "mac": match.group("mac").upper(),

homeassistant/components/todoist/calendar.py

@@ -233,8 +233,7 @@ def _parse_due_date(data: dict, gmt_string) -> datetime | None:
     # Add time information to date only strings.
     if len(data["date"]) == 10:
         return datetime.fromisoformat(data["date"]).replace(tzinfo=dt.UTC)
-    nowtime = dt.parse_datetime(data["date"])
+    if not (nowtime := dt.parse_datetime(data["date"])):
-    if not nowtime:
         return None
     if nowtime.tzinfo is None:
         data["date"] += gmt_string

homeassistant/components/yamaha_musiccast/media_player.py

@@ -342,9 +342,7 @@ class MusicCastMediaPlayer(MusicCastDeviceEntity, MediaPlayerEntity):
             parts = media_id.split(":")
 
             if parts[0] == "list":
-                index = parts[3]
+                if (index := parts[3]) == "-1":
-
-                if index == "-1":
                     index = "0"
 
                 await self.coordinator.musiccast.play_list_media(index, self._zone_id)

homeassistant/components/zeroconf/__init__.py

@@ -469,9 +469,7 @@ def info_from_service(service: AsyncServiceInfo) -> HaServiceInfo | None:
             if isinstance(value, bytes):
                 properties[key] = value.decode("utf-8")
 
-    addresses = service.addresses
+    if not (addresses := service.addresses):
-
-    if not addresses:
         return None
     if (host := _first_non_link_local_or_v6_address(addresses)) is None:
         return None