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))
-# 载入图片、资源
+from pygame
+pygame.init()
 bg_img = pygame.image.load('background.png')  # 背景图
 play_img = pygame.image.load('play.png')  # 播放按钮
 stop_img = pygame.image.load('stop.png')  # 暂停按钮
@@ -55,11 +51,29 @@ while True:
                         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>320 and x<420 and y>350 and y<400:
+                    num+=1
+                    if num>3:
+                        num = len(music_list)+1
+                    pygame.mixer.music.load(path + "\\" + music_list[num])
+                    pygame.mixer.music.play()
+                    click = 3
+                    play_button = stop_img
+                    
     if pygame.mixer.music.get_busy() == False:
         num += 1
         if num > len(music_list)-1:
             num = 0
-        pygame.mixer.music.load(path + '\\' + music_list[num])
+        pygame.mixer.music.load(path + "\\" + music_list[num])
         pygame.mixer.music.play()
     # 绘制画面
     screen.blit(bg_img, (0, 0))      # 填充背景