[combination][speaker_source][const] Share CONF_SOURCES from components/const (#21129)

esphome/components/combination/sensor.py

@@ -1,5 +1,6 @@
 import esphome.codegen as cg
 from esphome.components import sensor
+from esphome.components.const import CONF_SOURCES
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_ACCURACY_DECIMALS,
@@ -59,7 +60,6 @@ CONF_MEDIAN = "median"
 CONF_MIN = "min"
 CONF_MOST_RECENTLY_UPDATED = "most_recently_updated"
 CONF_PROCESS_STD_DEV = "process_std_dev"
-CONF_SOURCES = "sources"
 CONF_STD_DEV = "std_dev"
 
 

esphome/components/const/__init__.py

@@ -69,6 +69,7 @@ CONF_SCAN_PARAMETERS = "scan_parameters"
 CONF_SERIAL_NUMBER = "serial_number"
 CONF_SHA256 = "sha256"
 CONF_SLOT = "slot"
+CONF_SOURCES = "sources"
 CONF_STATE_SAVE_INTERVAL = "state_save_interval"
 CONF_STOP_BITS = "stop_bits"
 CONF_TARGET_COUNT = "target_count"

esphome/components/speaker_source/media_player.py

@@ -2,6 +2,7 @@ from esphome import automation
 import esphome.codegen as cg
 from esphome.components import audio, media_player, media_source, speaker
 from esphome.components.const import (
+    CONF_SOURCES,
     CONF_VOLUME_INCREMENT,
     CONF_VOLUME_INITIAL,
     CONF_VOLUME_MAX,
@@ -29,7 +30,6 @@ CONF_ON_MUTE = "on_mute"
 CONF_PIPELINE = "pipeline"
 CONF_ON_UNMUTE = "on_unmute"
 CONF_ON_VOLUME = "on_volume"
-CONF_SOURCES = "sources"
 
 speaker_source_ns = cg.esphome_ns.namespace("speaker_source")