diff --git a/homeassistant/components/knx/__init__.py b/homeassistant/components/knx/__init__.py
index 02e54c9dd73..5c2d7e3b68c 100644
--- a/homeassistant/components/knx/__init__.py
+++ b/homeassistant/components/knx/__init__.py
@@ -225,9 +225,8 @@ async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
 
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Load a config entry."""
-    conf = hass.data.get(DATA_KNX_CONFIG)
     # `conf` is None when reloading the integration or no `knx` key in configuration.yaml
-    if conf is None:
+    if (conf := hass.data.get(DATA_KNX_CONFIG)) is None:
         _conf = await async_integration_yaml_config(hass, DOMAIN)
         if not _conf or DOMAIN not in _conf:
             _LOGGER.warning(
diff --git a/homeassistant/components/kostal_plenticore/helper.py b/homeassistant/components/kostal_plenticore/helper.py
index 6dd72412fd8..e047c0dafba 100644
--- a/homeassistant/components/kostal_plenticore/helper.py
+++ b/homeassistant/components/kostal_plenticore/helper.py
@@ -123,9 +123,7 @@ class DataUpdateCoordinatorMixin:
 
     async def async_read_data(self, module_id: str, data_id: str) -> list[str, bool]:
         """Write settings back to Plenticore."""
-        client = self._plenticore.client
-
-        if client is None:
+        if (client := self._plenticore.client) is None:
             return False
 
         try:
@@ -137,9 +135,7 @@ class DataUpdateCoordinatorMixin:
 
     async def async_write_data(self, module_id: str, value: dict[str, str]) -> bool:
         """Write settings back to Plenticore."""
-        client = self._plenticore.client
-
-        if client is None:
+        if (client := self._plenticore.client) is None:
             return False
 
         try:
@@ -272,9 +268,7 @@ class SelectDataUpdateCoordinator(
     """Implementation of PlenticoreUpdateCoordinator for select data."""
 
     async def _async_update_data(self) -> dict[str, dict[str, str]]:
-        client = self._plenticore.client
-
-        if client is None:
+        if self._plenticore.client is None:
             return {}
 
         _LOGGER.debug("Fetching select %s for %s", self.name, self._fetch)
diff --git a/homeassistant/components/lcn/device_trigger.py b/homeassistant/components/lcn/device_trigger.py
index b82724f05d6..35575a442b2 100644
--- a/homeassistant/components/lcn/device_trigger.py
+++ b/homeassistant/components/lcn/device_trigger.py
@@ -56,8 +56,7 @@ async def async_get_triggers(
 ) -> list[dict[str, Any]]:
     """List device triggers for LCN devices."""
     device_registry = dr.async_get(hass)
-    device = device_registry.async_get(device_id)
-    if device is None:
+    if (device := device_registry.async_get(device_id)) is None:
         return []
 
     identifier = next(iter(device.identifiers))
diff --git a/homeassistant/components/lookin/climate.py b/homeassistant/components/lookin/climate.py
index e661c14a151..79cac79cb17 100644
--- a/homeassistant/components/lookin/climate.py
+++ b/homeassistant/components/lookin/climate.py
@@ -152,8 +152,7 @@ class ConditionerEntity(LookinCoordinatorEntity, ClimateEntity):
             # an educated guess.
             #
             meteo_data: MeteoSensor = self._meteo_coordinator.data
-            current_temp = meteo_data.temperature
-            if not current_temp:
+            if not (current_temp := meteo_data.temperature):
                 self._climate.hvac_mode = lookin_index.index(HVAC_MODE_AUTO)
             elif current_temp >= self._climate.temp_celsius:
                 self._climate.hvac_mode = lookin_index.index(HVAC_MODE_COOL)
diff --git a/homeassistant/components/lutron_caseta/__init__.py b/homeassistant/components/lutron_caseta/__init__.py
index 0408f547f25..ebd9e041332 100644
--- a/homeassistant/components/lutron_caseta/__init__.py
+++ b/homeassistant/components/lutron_caseta/__init__.py
@@ -221,9 +221,7 @@ def _async_subscribe_pico_remote_events(
 
     @callback
     def _async_button_event(button_id, event_type):
-        device = button_devices_by_id.get(button_id)
-
-        if not device:
+        if not (device := button_devices_by_id.get(button_id)):
             return
 
         if event_type == BUTTON_STATUS_PRESSED:
diff --git a/homeassistant/components/moehlenhoff_alpha2/climate.py b/homeassistant/components/moehlenhoff_alpha2/climate.py
index da536c4bd06..d99eb0e4c8c 100644
--- a/homeassistant/components/moehlenhoff_alpha2/climate.py
+++ b/homeassistant/components/moehlenhoff_alpha2/climate.py
@@ -101,8 +101,7 @@ class Alpha2Climate(CoordinatorEntity, ClimateEntity):
 
     async def async_set_temperature(self, **kwargs) -> None:
         """Set new target temperatures."""
-        target_temperature = kwargs.get(ATTR_TEMPERATURE)
-        if target_temperature is None:
+        if (target_temperature := kwargs.get(ATTR_TEMPERATURE)) is None:
             return
 
         await self.coordinator.async_set_target_temperature(
diff --git a/homeassistant/components/mold_indicator/sensor.py b/homeassistant/components/mold_indicator/sensor.py
index fe8a7c2431d..bbd609f5fb8 100644
--- a/homeassistant/components/mold_indicator/sensor.py
+++ b/homeassistant/components/mold_indicator/sensor.py
@@ -205,9 +205,8 @@ class MoldIndicator(SensorEntity):
             return None
 
         unit = state.attributes.get(ATTR_UNIT_OF_MEASUREMENT)
-        temp = util.convert(state.state, float)
 
-        if temp is None:
+        if (temp := util.convert(state.state, float)) is None:
             _LOGGER.error(
                 "Unable to parse temperature sensor %s with state: %s",
                 state.entity_id,
diff --git a/homeassistant/components/motioneye/media_source.py b/homeassistant/components/motioneye/media_source.py
index 8c7b86ca173..915cc30897e 100644
--- a/homeassistant/components/motioneye/media_source.py
+++ b/homeassistant/components/motioneye/media_source.py
@@ -134,8 +134,7 @@ class MotionEyeMediaSource(MediaSource):
     def _get_device_or_raise(self, device_id: str) -> dr.DeviceEntry:
         """Get a config entry from a URL."""
         device_registry = dr.async_get(self.hass)
-        device = device_registry.async_get(device_id)
-        if not device:
+        if not (device := device_registry.async_get(device_id)):
             raise MediaSourceError(f"Unable to find device with id: {device_id}")
         return device
 
diff --git a/homeassistant/components/nest/__init__.py b/homeassistant/components/nest/__init__.py
index 1083b80ac47..2a5f3850fe4 100644
--- a/homeassistant/components/nest/__init__.py
+++ b/homeassistant/components/nest/__init__.py
@@ -356,8 +356,7 @@ class NestEventMediaThumbnailView(NestEventViewBase):
     async def handle_media(self, media: Media) -> web.StreamResponse:
         """Start a GET request."""
         contents = media.contents
-        content_type = media.content_type
-        if content_type == "image/jpeg":
+        if (content_type := media.content_type) == "image/jpeg":
             image = Image(media.event_image_type.content_type, contents)
             contents = img_util.scale_jpeg_camera_image(
                 image, THUMBNAIL_SIZE_PX, THUMBNAIL_SIZE_PX
diff --git a/homeassistant/components/nest/config_flow.py b/homeassistant/components/nest/config_flow.py
index aac8c263ef1..b257c7b51bb 100644
--- a/homeassistant/components/nest/config_flow.py
+++ b/homeassistant/components/nest/config_flow.py
@@ -319,8 +319,7 @@ class NestFlowHandler(
         if user_input is not None and not errors:
             # Create the subscriber id and/or verify it already exists. Note that
             # the existing id is used, and create call below is idempotent
-            subscriber_id = data.get(CONF_SUBSCRIBER_ID, "")
-            if not subscriber_id:
+            if not (subscriber_id := data.get(CONF_SUBSCRIBER_ID, "")):
                 subscriber_id = _generate_subscription_id(cloud_project_id)
             _LOGGER.debug("Creating subscriber id '%s'", subscriber_id)
             # Create a placeholder ConfigEntry to use since with the auth we've already created.
diff --git a/homeassistant/components/nest/media_source.py b/homeassistant/components/nest/media_source.py
index 2676929f2de..af8a4af8ba5 100644
--- a/homeassistant/components/nest/media_source.py
+++ b/homeassistant/components/nest/media_source.py
@@ -134,8 +134,7 @@ class NestEventMediaStore(EventMediaStore):
         """Load data."""
         if self._data is None:
             self._devices = await self._get_devices()
-            data = await self._store.async_load()
-            if data is None:
+            if (data := await self._store.async_load()) is None:
                 _LOGGER.debug("Loaded empty event store")
                 self._data = {}
             elif isinstance(data, dict):
diff --git a/homeassistant/components/open_meteo/__init__.py b/homeassistant/components/open_meteo/__init__.py
index 653ccff6980..de42d19d8c9 100644
--- a/homeassistant/components/open_meteo/__init__.py
+++ b/homeassistant/components/open_meteo/__init__.py
@@ -28,8 +28,7 @@ async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     open_meteo = OpenMeteo(session=session)
 
     async def async_update_forecast() -> Forecast:
-        zone = hass.states.get(entry.data[CONF_ZONE])
-        if zone is None:
+        if (zone := hass.states.get(entry.data[CONF_ZONE])) is None:
             raise UpdateFailed(f"Zone '{entry.data[CONF_ZONE]}' not found")
 
         try:
diff --git a/homeassistant/components/picnic/coordinator.py b/homeassistant/components/picnic/coordinator.py
index 71a6559975c..24f3086134f 100644
--- a/homeassistant/components/picnic/coordinator.py
+++ b/homeassistant/components/picnic/coordinator.py
@@ -59,9 +59,7 @@ class PicnicUpdateCoordinator(DataUpdateCoordinator):
     def fetch_data(self):
         """Fetch the data from the Picnic API and return a flat dict with only needed sensor data."""
         # Fetch from the API and pre-process the data
-        cart = self.picnic_api_client.get_cart()
-
-        if not cart:
+        if not (cart := self.picnic_api_client.get_cart()):
             raise UpdateFailed("API response doesn't contain expected data.")
 
         last_order = self._get_last_order()
diff --git a/homeassistant/components/synology_dsm/service.py b/homeassistant/components/synology_dsm/service.py
index a7a336e0c1b..130ad110b46 100644
--- a/homeassistant/components/synology_dsm/service.py
+++ b/homeassistant/components/synology_dsm/service.py
@@ -45,8 +45,7 @@ async def async_setup_services(hass: HomeAssistant) -> None:
             return
 
         if call.service in [SERVICE_REBOOT, SERVICE_SHUTDOWN]:
-            dsm_device = hass.data[DOMAIN].get(serial)
-            if not dsm_device:
+            if not (dsm_device := hass.data[DOMAIN].get(serial)):
                 LOGGER.error("DSM with specified serial %s not found", serial)
                 return
             LOGGER.debug("%s DSM with serial %s", call.service, serial)
diff --git a/homeassistant/components/tolo/climate.py b/homeassistant/components/tolo/climate.py
index 659dfcbda16..4c02cdb74dc 100644
--- a/homeassistant/components/tolo/climate.py
+++ b/homeassistant/components/tolo/climate.py
@@ -144,8 +144,7 @@ class SaunaClimate(ToloSaunaCoordinatorEntity, ClimateEntity):
 
     def set_temperature(self, **kwargs: Any) -> None:
         """Set desired target temperature."""
-        temperature = kwargs.get(ATTR_TEMPERATURE)
-        if temperature is None:
+        if (temperature := kwargs.get(ATTR_TEMPERATURE)) is None:
             return
 
         self.coordinator.client.set_target_temperature(round(temperature))
diff --git a/homeassistant/components/venstar/sensor.py b/homeassistant/components/venstar/sensor.py
index 68d5bad27d6..824774f3e31 100644
--- a/homeassistant/components/venstar/sensor.py
+++ b/homeassistant/components/venstar/sensor.py
@@ -75,8 +75,7 @@ async def async_setup_entry(
     coordinator = hass.data[DOMAIN][config_entry.entry_id]
     entities: list[Entity] = []
 
-    sensors = coordinator.client.get_sensor_list()
-    if not sensors:
+    if not (sensors := coordinator.client.get_sensor_list()):
         return
 
     for sensor_name in sensors:
diff --git a/homeassistant/components/webostv/device_trigger.py b/homeassistant/components/webostv/device_trigger.py
index 47cdf974cc7..feb5bae98fe 100644
--- a/homeassistant/components/webostv/device_trigger.py
+++ b/homeassistant/components/webostv/device_trigger.py
@@ -79,9 +79,7 @@ async def async_attach_trigger(
     automation_info: AutomationTriggerInfo,
 ) -> CALLBACK_TYPE | None:
     """Attach a trigger."""
-    trigger_type = config[CONF_TYPE]
-
-    if trigger_type == TURN_ON_PLATFORM_TYPE:
+    if (trigger_type := config[CONF_TYPE]) == TURN_ON_PLATFORM_TYPE:
         trigger_config = {
             CONF_PLATFORM: trigger_type,
             CONF_DEVICE_ID: config[CONF_DEVICE_ID],
diff --git a/homeassistant/components/webostv/helpers.py b/homeassistant/components/webostv/helpers.py
index 70a253d5ceb..0ee3805f42f 100644
--- a/homeassistant/components/webostv/helpers.py
+++ b/homeassistant/components/webostv/helpers.py
@@ -20,9 +20,7 @@ def async_get_device_entry_by_device_id(
     Raises ValueError if device ID is invalid.
     """
     device_reg = dr.async_get(hass)
-    device = device_reg.async_get(device_id)
-
-    if device is None:
+    if (device := device_reg.async_get(device_id)) is None:
         raise ValueError(f"Device {device_id} is not a valid {DOMAIN} device.")
 
     return device
diff --git a/homeassistant/components/webostv/media_player.py b/homeassistant/components/webostv/media_player.py
index 95e0b059538..67125c45ef5 100644
--- a/homeassistant/components/webostv/media_player.py
+++ b/homeassistant/components/webostv/media_player.py
@@ -248,8 +248,7 @@ class LgWebOSMediaPlayerEntity(RestoreEntity, MediaPlayerEntity):
             if maj_v and min_v:
                 self._attr_device_info["sw_version"] = f"{maj_v}.{min_v}"
 
-            model = self._client.system_info.get("modelName")
-            if model:
+            if model := self._client.system_info.get("modelName"):
                 self._attr_device_info["model"] = model
 
         self._attr_extra_state_attributes = {}
diff --git a/homeassistant/components/xiaomi_aqara/binary_sensor.py b/homeassistant/components/xiaomi_aqara/binary_sensor.py
index ae4059728fe..0a21bb37d44 100644
--- a/homeassistant/components/xiaomi_aqara/binary_sensor.py
+++ b/homeassistant/components/xiaomi_aqara/binary_sensor.py
@@ -333,8 +333,7 @@ class XiaomiDoorSensor(XiaomiBinarySensor, RestoreEntity):
     async def async_added_to_hass(self) -> None:
         """Handle entity which will be added."""
         await super().async_added_to_hass()
-        state = await self.async_get_last_state()
-        if state is None:
+        if (state := await self.async_get_last_state()) is None:
             return
 
         self._state = state.state == "on"