diff --git a/ship b/ship
index 1dbba0c..476545d 100644
--- a/ship
+++ b/ship
@@ -43,4 +43,5 @@ class Ship(Sprite):
     def center_ship(self):
         """让飞船在屏幕底端局中"""
         self.rect.midbottom = self.screen_rect.midbottom
-        self.x = float(self.rect.x)
\ No newline at end of file
+        self.x = float(self.rect.x)
+        
\ No newline at end of file