save project

my_music.py

@@ -22,13 +22,13 @@ while True:
         pygame.mixer.music.set_volume(voice)
         if event.type==locals.KEYDOWN:
             if event.key==locals.K_UP:
-                volume+=0.1
-                if volume>1:
-                    volume=1
+                voice+=0.1
+                if voice>1:
+                    voice=1
             if event.key==locals.K_DOWN:
-                volume-=0.1
-                if volume<0:
-                    volume=0
+                voice-=0.1
+                if voice<0:
+                    voice=0
     # 绘制画面
     screen.blit(bg_img, (0, 0))      # 填充背景
     screen.blit(stop_img, (270, 330))   # 暂停按钮