From cf7c716bda484a497573c65963f696be8c294f69 Mon Sep 17 00:00:00 2001
From: Marc Mueller <30130371+cdce8p@users.noreply.github.com>
Date: Sat, 13 Aug 2022 18:46:08 +0200
Subject: [PATCH] Fix implicit Optional [core] (#76719)

---
 .../components/application_credentials/__init__.py          | 2 +-
 homeassistant/components/mobile_app/helpers.py              | 6 +++---
 homeassistant/components/mqtt/mixins.py                     | 2 +-
 homeassistant/components/template/template_entity.py        | 2 +-
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/homeassistant/components/application_credentials/__init__.py b/homeassistant/components/application_credentials/__init__.py
index 14ae049cfcae..6dd2d5623078 100644
--- a/homeassistant/components/application_credentials/__init__.py
+++ b/homeassistant/components/application_credentials/__init__.py
@@ -168,7 +168,7 @@ async def async_import_client_credential(
     hass: HomeAssistant,
     domain: str,
     credential: ClientCredential,
-    auth_domain: str = None,
+    auth_domain: str | None = None,
 ) -> None:
     """Import an existing credential from configuration.yaml."""
     if DOMAIN not in hass.data:
diff --git a/homeassistant/components/mobile_app/helpers.py b/homeassistant/components/mobile_app/helpers.py
index e1c0841984fc..a116e6196f42 100644
--- a/homeassistant/components/mobile_app/helpers.py
+++ b/homeassistant/components/mobile_app/helpers.py
@@ -117,7 +117,7 @@ def registration_context(registration: dict) -> Context:
 
 
 def empty_okay_response(
-    headers: dict = None, status: HTTPStatus = HTTPStatus.OK
+    headers: dict | None = None, status: HTTPStatus = HTTPStatus.OK
 ) -> Response:
     """Return a Response with empty JSON object and a 200."""
     return Response(
@@ -129,7 +129,7 @@ def error_response(
     code: str,
     message: str,
     status: HTTPStatus = HTTPStatus.BAD_REQUEST,
-    headers: dict = None,
+    headers: dict | None = None,
 ) -> Response:
     """Return an error Response."""
     return json_response(
@@ -177,7 +177,7 @@ def webhook_response(
     *,
     registration: dict,
     status: HTTPStatus = HTTPStatus.OK,
-    headers: dict = None,
+    headers: dict | None = None,
 ) -> Response:
     """Return a encrypted response if registration supports it."""
     data = json.dumps(data, cls=JSONEncoder)
diff --git a/homeassistant/components/mqtt/mixins.py b/homeassistant/components/mqtt/mixins.py
index f0cc0c4ad447..4b7ae92c6f4e 100644
--- a/homeassistant/components/mqtt/mixins.py
+++ b/homeassistant/components/mqtt/mixins.py
@@ -287,7 +287,7 @@ async def async_discover_yaml_entities(
 async def async_get_platform_config_from_yaml(
     hass: HomeAssistant,
     platform_domain: str,
-    config_yaml: ConfigType = None,
+    config_yaml: ConfigType | None = None,
 ) -> list[ConfigType]:
     """Return a list of validated configurations for the domain."""
 
diff --git a/homeassistant/components/template/template_entity.py b/homeassistant/components/template/template_entity.py
index 901834237c64..87c8ec651d23 100644
--- a/homeassistant/components/template/template_entity.py
+++ b/homeassistant/components/template/template_entity.py
@@ -79,7 +79,7 @@ LEGACY_FIELDS = {
 
 
 def rewrite_common_legacy_to_modern_conf(
-    entity_cfg: dict[str, Any], extra_legacy_fields: dict[str, str] = None
+    entity_cfg: dict[str, Any], extra_legacy_fields: dict[str, str] | None = None
 ) -> dict[str, Any]:
     """Rewrite legacy config."""
     entity_cfg = {**entity_cfg}