save project

.py

-if x>120 and x<220 and y>350 and y<400 and y>350:
+if x>120 and x<220 and y>350 and y<400:
     num-=1
     if num<0:
         num=len(list_yy)-1
     pygame.mixer.music.load('C:\\Users\\admin\\Desktop\\毕业了'+'\\'+list_yy[num])
     pygame.mixer.music.play()
-if x>420 and x<520 and y>350 and y<400 and y>350:
-    num-=1
-    if num<0:
-        num=len(list_yy)-1
+    c=0
+    button=stop_img
+if x>420 and x<520 and y>350 and y<400:
+    num+=1
+    if num>len(list_yy)-1:
+        num=0
     pygame.mixer.music.load('C:\\Users\\admin\\Desktop\\毕业了'+'\\'+list_yy[num])
-    pygame.mixer.music.play()
\ No newline at end of file
+    pygame.mixer.music.play()
+    c=0
+    button=stop_img
\ No newline at end of file