save project

my_game.py

@@ -81,10 +81,9 @@ while True:
         num=random.randint(0,50) 
         num=random.randint(0,50) 
         if num>20:
         if num>20:
             aa=Block(bush,cacti,stone)
             aa=Block(bush,cacti,stone)
-            block_list
+            block_list.add(aa)
+    for aa in block_list:
         aa.rect.x -= 8
         aa.rect.x -= 8
-
- 
         screen.blit(aa.image, (aa.rect.x, aa.rect.y)) 
         screen.blit(aa.image, (aa.rect.x, aa.rect.y)) 
     # 刷新画面
     # 刷新画面
     pygame.display.update()
     pygame.display.update()