Use exceptions module

homeassistant/components/lovelace/cast.py

@@ -25,7 +25,8 @@ from homeassistant.core import HomeAssistant, callback
 from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers.network import NoURLAvailableError, get_url
 
-from .const import DOMAIN, LOVELACE_DATA, ConfigNotFound
+from .const import DOMAIN, LOVELACE_DATA
+from .exceptions import ConfigNotFound
 
 DEFAULT_DASHBOARD = "_default_"
 

homeassistant/components/lovelace/const.py

@@ -13,7 +13,6 @@ from homeassistant.const import (
     CONF_URL,
     EVENT_LOVELACE_UPDATED,  # noqa: F401
 )
-from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_validation as cv
 from homeassistant.helpers.typing import VolDictType
 from homeassistant.util.hass_dict import HassKey
@@ -88,7 +87,3 @@ STORAGE_DASHBOARD_CREATE_FIELDS: VolDictType = {
 }
 
 STORAGE_DASHBOARD_UPDATE_FIELDS = DASHBOARD_BASE_UPDATE_FIELDS
-
-
-class ConfigNotFound(HomeAssistantError):
-    """When no config available."""

homeassistant/components/lovelace/dashboard.py

@@ -32,8 +32,8 @@ from .const import (
     MODE_YAML,
     STORAGE_DASHBOARD_CREATE_FIELDS,
     STORAGE_DASHBOARD_UPDATE_FIELDS,
-    ConfigNotFound,
 )
+from .exceptions import ConfigNotFound
 
 CONFIG_STORAGE_KEY_DEFAULT = DOMAIN
 CONFIG_STORAGE_KEY = "lovelace.{}"

homeassistant/components/lovelace/exceptions.py

@@ -0,0 +1,7 @@
+"""Exceptions for Lovelace."""
+
+from homeassistant.exceptions import HomeAssistantError
+
+
+class ConfigNotFound(HomeAssistantError):
+    """When no config available."""

homeassistant/components/lovelace/websocket.py

@@ -14,8 +14,9 @@ from homeassistant.exceptions import HomeAssistantError
 from homeassistant.helpers import config_validation as cv
 from homeassistant.helpers.json import json_fragment
 
-from .const import CONF_URL_PATH, LOVELACE_DATA, ConfigNotFound
+from .const import CONF_URL_PATH, LOVELACE_DATA
 from .dashboard import LovelaceConfig
+from .exceptions import ConfigNotFound
 
 if TYPE_CHECKING:
     from .resources import ResourceStorageCollection