save project

my_music.py

@@ -51,10 +51,14 @@ while True:
                     pygame.mixer.music.pause()
 
     if pygame.mixer.music.get_busy() == False:
+        num += 1
+        if num > len(music_list)-1:
+            num = 0
+
         pygame.mixer.music.play()
 
     # 绘制画面
-    screen.blit(bg_img, (0, 0))      # 填充背景
+    screen.blit(bg_img, (0 0))      # 填充背景
     screen.blit(play_button, (270, 330))   # 暂停按钮
     screen.blit(logo_img, (170, 60))    # 中间logo图
     screen.blit(last_img, (120, 350))   # 上一曲