def creabackuno():
  startbar()
  messagebox.showinfo( "Wait..","I am creating the backup, please wait...")
  try:
      copytree(path,r"backup\dirbackup1\.minecraft")
      messagebox.showinfo( "OK!","Backup (1) created!")
      stopbar()
  except OSError as exc:
      messagebox.showerror( "Nope!","There is already a backup to restore")
      stopbar()
I have a problem with a progressbar:
The startbar() start the progressbar on the graphic interface, but when start shutil(copytree(path,r"backup\dirbackup1.minecraft")) the interface freezing and the progressbar stop until it finished. thanks
i'm using python 3.3
sorry for my poor english