save project

lesson4-diy3.py

@@ -24,6 +24,7 @@ while True:
         # 按键，控制声音大小
         if event.type == locals.KEYDOWN:
             if event.key == locals.K_w:
+                if event.key==locals.K_UP:
                 volume += 0.1
                 if volume > 1:
                     volume = 1