Use literal string interpolation in integrations R-S (f-strings) (#26392)

homeassistant/components/stream/__init__.py

@@ -217,9 +217,7 @@ async def async_handle_record_service(hass, call):
 
     # Check for file access
     if not hass.config.is_allowed_path(video_path):
-        raise HomeAssistantError(
-            "Can't write {}, no access to path!".format(video_path)
-        )
+        raise HomeAssistantError(f"Can't write {video_path}, no access to path!")
 
     # Check for active stream
     streams = hass.data[DOMAIN][ATTR_STREAMS]
@@ -231,9 +229,7 @@ async def async_handle_record_service(hass, call):
     # Add recorder
     recorder = stream.outputs.get("recorder")
     if recorder:
-        raise HomeAssistantError(
-            "Stream already recording to {}!".format(recorder.video_path)
-        )
+        raise HomeAssistantError(f"Stream already recording to {recorder.video_path}!")
 
     recorder = stream.add_provider("recorder")
     recorder.video_path = video_path

homeassistant/components/stream/hls.py

@@ -64,10 +64,7 @@ class M3U8Renderer:
     @staticmethod
     def render_preamble(track):
         """Render preamble."""
-        return [
-            "#EXT-X-VERSION:3",
-            "#EXT-X-TARGETDURATION:{}".format(track.target_duration),
-        ]
+        return ["#EXT-X-VERSION:3", f"#EXT-X-TARGETDURATION:{track.target_duration}"]
 
     @staticmethod
     def render_playlist(track, start_time):
@@ -84,7 +81,7 @@ class M3U8Renderer:
             playlist.extend(
                 [
                     "#EXTINF:{:.04f},".format(float(segment.duration)),
-                    "./segment/{}.ts".format(segment.sequence),
+                    f"./segment/{segment.sequence}.ts",
                 ]
             )