def METHOD_NAME(self, directory):
    r = []
    prefix = ""
    if not directory:
        if os.name == "nt":
            drives = get_windows_drives()
            return [drive + ":\\" for drive in drives]
        else:
            directory = "/"
            prefix = "/"
    for de in os.scandir(directory):
        if de.is_dir():
            r.append(prefix + de.name + os.path.sep)
        else:
            r.append(prefix + de.name)
    return r