save project

my_music.py

@@ -19,6 +19,12 @@ while True:
             exit()
     if pygame.mixer.music.get_busy==False:    
         pygame.mixer.music.play()
+    if event.type==locals.K_DOWN:
+        if event.key==locals.K_UP:
+            volume+=0.1
+        if event.key==locals.K_DOWN:
+            volume-=0.1
+            pygame.mixer.music.set_volume(volume)
 
     # 绘制画面
     screen.blit(bg_img, (0, 0))      # 填充背景