save project

my_music.py

 import pygame
 from pygame import locals
 import os
+
 pygame.init()  # 初始化
 # 创建窗口
 screen = pygame.display.set_mode((640, 480))
@@ -57,7 +58,23 @@ while True:
                         else:
                             play_button = play_img
                             pygame.mixer.music.pause()
-
+                    if x>120 and x<220 and y>350 and y<400:
+                        num-=1
+                        if num<0:
+                            num=len(music_list)-1
+                        pygame.mixer.music.load(path+'\\'+music_list[num])
+                        pygame.mixer.music.play()
+                        click=0
+                        play_button=stop_img
+                    if x>420 and x<520 and y>350 and y<400:
+                        num+=1
+                        if num>3:
+                            num=0
+                        pygame.mixer.music.load(path+'\\'+music_list[num])
+                        pygame.mixer.music.play()
+                        click=0
+                        play_button=stop_img
+    
     if pygame.mixer.music.get_busy() == False:
         num+=1
         if num>len(music_list)-1: