diff --git a/domain/commands/random_cat_move_command.py b/domain/commands/random_cat_move_command.py
index 378175e..3dbe005 100644
--- a/domain/commands/random_cat_move_command.py
+++ b/domain/commands/random_cat_move_command.py
@@ -9,7 +9,6 @@ from domain.world import World
 
 
 class RandomCatMoveCommand(Command):
-
     def __init__(self, world: World, cat: Cat) -> None:
         super().__init__()
         self.world = world
@@ -24,15 +23,17 @@ class RandomCatMoveCommand(Command):
             if not cat.busy:
                 while True:
                     cat.direction = randint(0, 3)
-                    if not ((cat.direction == 0 and cat.y == 0)
-                            or (cat.direction == 1 and cat.x == self.world.width - 1)
-                            or (cat.direction == 2 and cat.y == self.world.height - 1)
-                            or (cat.direction == 3 and cat.x == 0)):
+                    if not (
+                        (cat.direction == 0 and cat.y == 0)
+                        or (cat.direction == 1 and cat.x == self.world.width - 1)
+                        or (cat.direction == 2 and cat.y == self.world.height - 1)
+                        or (cat.direction == 3 and cat.x == 0)
+                    ):
                         break
 
             if cat.direction == 0:  # up
                 if cat.busy:
-                    move_vector = (0, - 1)
+                    move_vector = (0, -1)
                 cat.busy = not cat.busy
             if cat.direction == 1:  # right
                 if cat.busy:
@@ -54,10 +55,16 @@ class RandomCatMoveCommand(Command):
         end_x = cat.x + move_vector[0]
         end_y = cat.y + move_vector[1]
 
-        if end_x > self.world.width - 1 or end_y > self.world.height - 1 or end_x < 0 or end_y < 0:
+        if (
+            end_x > self.world.width - 1
+            or end_y > self.world.height - 1
+            or end_x < 0
+            or end_y < 0
+        ):
             return
 
         self.world.obstacles[cat.x][cat.y].remove(cat)
         cat.x = end_x
         cat.y = end_y
         self.world.obstacles[end_x][end_y].append(cat)
+        # endregion cat random movement