diff --git a/esphome/components/light/__init__.py b/esphome/components/light/__init__.py
index ba3a26ebe5..fdc4676758 100644
--- a/esphome/components/light/__init__.py
+++ b/esphome/components/light/__init__.py
@@ -137,18 +137,16 @@ async def setup_light_core_(light_var, output_var, config):
 
     cg.add(light_var.set_restore_mode(config[CONF_RESTORE_MODE]))
 
-    if CONF_DEFAULT_TRANSITION_LENGTH in config:
-        cg.add(
-            light_var.set_default_transition_length(
-                config[CONF_DEFAULT_TRANSITION_LENGTH]
-            )
-        )
-    if CONF_FLASH_TRANSITION_LENGTH in config:
-        cg.add(
-            light_var.set_flash_transition_length(config[CONF_FLASH_TRANSITION_LENGTH])
-        )
-    if CONF_GAMMA_CORRECT in config:
-        cg.add(light_var.set_gamma_correct(config[CONF_GAMMA_CORRECT]))
+    if (
+        default_transition_length := config.get(CONF_DEFAULT_TRANSITION_LENGTH)
+    ) is not None:
+        cg.add(light_var.set_default_transition_length(default_transition_length))
+    if (
+        flash_transition_length := config.get(CONF_FLASH_TRANSITION_LENGTH)
+    ) is not None:
+        cg.add(light_var.set_flash_transition_length(flash_transition_length))
+    if (gamma_correct := config.get(CONF_GAMMA_CORRECT)) is not None:
+        cg.add(light_var.set_gamma_correct(gamma_correct))
     effects = await cg.build_registry_list(
         EFFECTS_REGISTRY, config.get(CONF_EFFECTS, [])
     )
@@ -164,15 +162,15 @@ async def setup_light_core_(light_var, output_var, config):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], light_var)
         await auto.build_automation(trigger, [], conf)
 
-    if CONF_COLOR_CORRECT in config:
-        cg.add(output_var.set_correction(*config[CONF_COLOR_CORRECT]))
+    if (color_correct := config.get(CONF_COLOR_CORRECT)) is not None:
+        cg.add(output_var.set_correction(*color_correct))
 
-    if CONF_POWER_SUPPLY in config:
-        var_ = await cg.get_variable(config[CONF_POWER_SUPPLY])
+    if (power_supply_id := config.get(CONF_POWER_SUPPLY)) is not None:
+        var_ = await cg.get_variable(power_supply_id)
         cg.add(output_var.set_power_supply(var_))
 
-    if CONF_MQTT_ID in config:
-        mqtt_ = cg.new_Pvariable(config[CONF_MQTT_ID], light_var)
+    if (mqtt_id := config.get(CONF_MQTT_ID)) is not None:
+        mqtt_ = cg.new_Pvariable(mqtt_id, light_var)
         await mqtt.register_mqtt_component(mqtt_, config)