save project

snake.py

@@ -64,6 +64,9 @@ while True:
         apple_y = 30*num2-30
     else:
         position.pop(0)
+    
+    if x < 0 or x > 630 or y < 0 or y > 450:
+        exit()
     # if x == apple_x and y == apple_y:
         # while True:
             # apple_x = random.randint(0,630)