code: def windows_dir_format(host_dir, user):
      
      if user and user.grade:
          grade = int(user.grade)
      else:
          return host_dir
  
      if grade in range(9, 13):
          win_path = "/{}/".format(user.username)
      else:
          win_path = ""
      return host_dir.replace("{win}", win_path)
docs: Format a string for the location of the user's folder on the Windows (TJ03) fileserver.