save project

my_music.py

 import pygame
 from pygame import locals
+volume=0.2
+volume.mixer.music.set_volume(volume)
+
 
 pygame.init()   # 初始化
 # 创建窗口
@@ -17,11 +20,26 @@ while True:
     for event in pygame.event.get():
         if event.type==locals.QUIT:
             exit()
+        
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_UP
+                volume+=0.1
+                if volume >1:
+                    volume=1
+                    pygame.mixer.music.set_volume(volume)
+            if event.key==locals.K_DOWN
+                volume-=0.1
+                if volume <0:
+                    volume=0
+                    
+                    pygame.mixer.music.set_volume(volume)
+                    
+
 
     if pygame.mixer.music.get_busy()== False:
        pygame.mixer.music.play()
-        
 
+        
     
 
     # 绘制画面