save project

snake.py

@@ -47,6 +47,8 @@ while True:
         y+=30
     if setheading=='up':
         y-=30
+    if y<0 or y>480 or x<0 or x>630:
+        exit()
     if x==apple_x and y==apple_y:
         apple_x=random.randint(1,22)
         apple_y=random.randint(1,16)