save project

my_music copy.py

@@ -57,6 +57,14 @@ 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 pygame.mixer.music.get_busy() == False:
         num+=1

my_music.py

 import pygame
 from pygame import locals
-import os
 
 pygame.init()  # 初始化
 # 创建窗口
@@ -14,7 +13,7 @@ next_img = pygame.image.load('next.png')  # 下一曲按钮
 logo_img = pygame.image.load('logo.png')  # 下一曲按钮
 
 # 载入音乐
-pygame.mixer.music.load('歌曲4.ogg')  # 载入音乐
+pygame.mixer.music.load('歌曲4.ogg')  # 载入音乐      
 music_list=['歌曲1.wav','歌曲2.wav','歌曲3.wav','歌曲4.ogg']
 num=-1
 volume = 0.2
@@ -52,6 +51,12 @@ 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
+                        pygame.mixer.music.load(path+'\\'music_list[num])
+                        pygame.mixer.music.play()
+                        click=0
+
 
     if pygame.mixer.music.get_busy() == False:
         num+=1