save project

my_music.py

@@ -20,12 +20,12 @@ while True:
             exit()
         if event.type==locals.KEYDOWN:
             if event.key==locals.K_UP:
-                volume+=1
+                volume+=0.1
                 if volume>1:
                     volume=1
                 pygame.mixer.music.set_volume(volume)
             if event.key==locals.K_DOWN:
-                volume-=1
+                volume-=0.1
                 if volume<0:
                     volume=0
                 pygame.mixer.music.set_volume(volume)