diff --git a/katrain/__main__.py b/katrain/__main__.py
index 35d20fc..744e016 100644
--- a/katrain/__main__.py
+++ b/katrain/__main__.py
@@ -114,7 +114,7 @@ class KaTrainGui(Screen, KaTrainBase):
         self.message_queue = Queue()
 
         self._keyboard = Window.request_keyboard(None, self, "")
-        self._keyboard.bind(on_key_down=self._on_keyboard_down,on_key_up=self._on_keyboard_up)
+        self._keyboard.bind(on_key_down=self._on_keyboard_down, on_key_up=self._on_keyboard_up)
         Clock.schedule_interval(self.animate_pondering, 0.1)
 
     def log(self, message, level=OUTPUT_INFO):
@@ -621,7 +621,6 @@ class KaTrainGui(Screen, KaTrainBase):
             self.nav_drawer.set_state("toggle")
 
 
-
 class KaTrainApp(MDApp):
     gui = ObjectProperty(None)
     language = StringProperty(DEFAULT_LANGUAGE)
diff --git a/katrain/core/engine.py b/katrain/core/engine.py
index 9a91bd9..a4bf432 100644
--- a/katrain/core/engine.py
+++ b/katrain/core/engine.py
@@ -133,7 +133,7 @@ class KataGoEngine:
                 else:
                     os_error += f"status {code}"
                     died_msg = i18n._("Engine died unexpectedly").format(error=os_error)
-                if code != 1: # deliberate exit, already showed message?
+                if code != 1:  # deliberate exit, already showed message?
                     self.katrain.log(died_msg, OUTPUT_ERROR)
                 self.katago_process = None
             else:
diff --git a/katrain/gui/controlspanel.py b/katrain/gui/controlspanel.py
index 0307b7f..60f81ff 100644
--- a/katrain/gui/controlspanel.py
+++ b/katrain/gui/controlspanel.py
@@ -24,7 +24,7 @@ class PlayAnalyzeSelect(MDFloatLayout):
         self.katrain._config["ui_state"] = self.katrain._config.get("ui_state", {})
         self.katrain._config["ui_state"][self.mode] = {
             "analysis_controls": {
-                id: toggle.active if not toggle.checkbox.slashed else None # troolean ftw
+                id: toggle.active if not toggle.checkbox.slashed else None  # troolean ftw
                 for id, toggle in self.katrain.analysis_controls.ids.items()
                 if isinstance(toggle, AnalysisToggle)
             },