save project

day2.py

@@ -59,11 +59,12 @@ while True:
 
     #贪吃蛇吃到苹果
     if x==apple_x and y==apple_y:
-        num1=random.randint(0,22)
-        num2=random.randint(0,16)
+        num1=random.randint(1,22)
+        num2=random.randint(1,16)
         apple_x=num1*30-30
         apple_x=num2*30-30
         
+    else:
         position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))