memory improvements and fstring

kmk/extensions/led.py

@@ -64,19 +64,7 @@ class LED(Extension):
         return 'LED({})'.format(self._to_dict())
 
     def _to_dict(self):
-        return (
-            'LED('
-            f'_brightness={self._brightness} '
-            f'_pos={self._pos} '
-            f'brightness_step={self.brightness_step} '
-            f'brightness_limit={self.brightness_limit} '
-            f'animation_mode={self.animation_mode} '
-            f'animation_speed={self.animation_speed} '
-            f'breathe_center={self.breathe_center} '
-            f'val={self.val} '
-            ')'
-        )
-        pass
+        return f'LED(_brightness={self._brightness} _pos={self._pos} brightness_step={self.brightness_step} brightness_limit={self.brightness_limit} animation_mode={self.animation_mode} animation_speed={self.animation_speed} breathe_center={self.breathe_center} val={self.val} )'
 
     def _init_effect(self):
         self._pos = 0