save project

my_music.py

@@ -62,7 +62,7 @@ while True:
                     pygame.mixer.music.play()
                 if x>420 and x<520 and y>350 and y<450:
                     n+=1
-                    if n=len(ml):
+                    if n==len(ml):
                         n=0
                     pygame.mixer.music.load(p+"\\"+ml[n])
                     pygame.mixer.music.play()