save project

my_music.py

@@ -13,19 +13,24 @@ next_img = pygame.image.load('next.png')  # 下一曲按钮
 logo_img = pygame.image.load('logo.png')  # 中间logo
 pygame.mixer.music.load('歌曲3.wav') # 载入音乐
 volume=0.2
-pygame.mixer.music.set_volume
+pygame.mixer.music.set_volume(volume) # 音乐播放器的音量
+
 while True:
     # 窗口关闭
     for event in pygame.event.get():
         if event.type==locals.QUIT:
             exit()
-        
+        # 按键控制声音的大小
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_DOWN:
                 volume -= 0.1
+                if volume < 0:
+                    volume = 0
                 pygame.mixer.music.set_volume(volume)
             if event.key == locals.K_UP:
                 volume += 0.1
+                if volume > 1:
+                    volume = 1
                 pygame.mixer.music.set_volume(volume)
     if pygame.mixer.music.get_busy() == False: # 判断音乐是否播放
         pygame.mixer.music.play() # 播放音乐