save project

snake.py

@@ -64,7 +64,7 @@ while True:
         apple_y = 30*num2-30
     else:
         possition.pop(0)
-    if x < 0 or x > 630 or y < y 450:
+    if x < 0 or x > 630 or y < 0 or y > 450:
         exit()
 
     # 将背景图画上去