Prevent None strings in description_placeholders (#127103)

homeassistant/components/emonitor/config_flow.py

@@ -92,6 +92,7 @@ class EmonitorConfigFlow(ConfigFlow, domain=DOMAIN):
         self, user_input: dict[str, Any] | None = None
     ) -> ConfigFlowResult:
         """Attempt to confirm."""
+        assert self.discovered_ip is not None
         if user_input is not None:
             return self.async_create_entry(
                 title=self.discovered_info["title"],

homeassistant/components/kodi/config_flow.py

@@ -145,6 +145,7 @@ class KodiConfigFlow(ConfigFlow, domain=DOMAIN):
     ) -> ConfigFlowResult:
         """Handle user-confirmation of discovered node."""
         if user_input is None:
+            assert self._name is not None
             return self.async_show_form(
                 step_id="discovery_confirm",
                 description_placeholders={"name": self._name},

homeassistant/components/lookin/config_flow.py

@@ -97,7 +97,10 @@ class LookinFlowHandler(ConfigFlow, domain=DOMAIN):
         if user_input is None:
             return self.async_show_form(
                 step_id="discovery_confirm",
-                description_placeholders={"name": self._name, "host": self._host},
+                description_placeholders={
+                    "name": self._name or "LOOKin",
+                    "host": self._host,
+                },
             )
 
         return self.async_create_entry(

homeassistant/components/ridwell/config_flow.py

@@ -93,6 +93,9 @@ class RidwellConfigFlow(ConfigFlow, domain=DOMAIN):
     ) -> ConfigFlowResult:
         """Handle re-auth completion."""
         if not user_input:
+            if TYPE_CHECKING:
+                assert self._username
+
             return self.async_show_form(
                 step_id="reauth_confirm",
                 data_schema=STEP_REAUTH_CONFIRM_DATA_SCHEMA,

homeassistant/components/songpal/config_flow.py

@@ -24,6 +24,8 @@ class SongpalConfig:
     def __init__(self, name: str, host: str | None, endpoint: str) -> None:
         """Initialize Configuration."""
         self.name = name
+        if TYPE_CHECKING:
+            assert host is not None
         self.host = host
         self.endpoint = endpoint
 

homeassistant/components/workday/config_flow.py

@@ -372,7 +372,7 @@ class WorkdayOptionsFlowHandler(OptionsFlow):
             errors=errors,
             description_placeholders={
                 "name": options[CONF_NAME],
-                "country": options.get(CONF_COUNTRY),
+                "country": options.get(CONF_COUNTRY, "-"),
             },
         )
 

homeassistant/config_entries.py

@@ -2966,7 +2966,7 @@ class ConfigFlow(ConfigEntryBaseFlow):
         step_id: str | None = None,
         data_schema: vol.Schema | None = None,
         errors: dict[str, str] | None = None,
-        description_placeholders: Mapping[str, str | None] | None = None,
+        description_placeholders: Mapping[str, str] | None = None,
         last_step: bool | None = None,
         preview: str | None = None,
     ) -> ConfigFlowResult:

homeassistant/data_entry_flow.py

@@ -155,7 +155,7 @@ class FlowResult(TypedDict, Generic[_FlowContextT, _HandlerT], total=False):
     context: _FlowContextT
     data_schema: vol.Schema | None
     data: Mapping[str, Any]
-    description_placeholders: Mapping[str, str | None] | None
+    description_placeholders: Mapping[str, str] | None
     description: str | None
     errors: dict[str, str] | None
     extra: str
@@ -705,7 +705,7 @@ class FlowHandler(Generic[_FlowContextT, _FlowResultT, _HandlerT]):
         step_id: str | None = None,
         data_schema: vol.Schema | None = None,
         errors: dict[str, str] | None = None,
-        description_placeholders: Mapping[str, str | None] | None = None,
+        description_placeholders: Mapping[str, str] | None = None,
         last_step: bool | None = None,
         preview: str | None = None,
     ) -> _FlowResultT: