parsing string to path

    def __init__(self, filename):

        self.filename = filename

        abspath = os.path.abspath(filename)

        abs_ckpt_dir = os.path.abspath(shared.cmd_opts.ckpt_dir) if shared.cmd_opts.ckpt_dir is not None else None

        self.is_safetensors = os.path.splitext(filename)[1].lower() == ".safetensors"

        if shared.cmd_opts.ckpt_dir is not None and abspath.startswith(shared.cmd_opts.ckpt_dir):

            name = abspath.replace(shared.cmd_opts.ckpt_dir, '')

        if abs_ckpt_dir and abspath.startswith(abs_ckpt_dir):

            name = abspath.replace(abs_ckpt_dir, '')

        elif abspath.startswith(model_path):

            name = abspath.replace(model_path, '')

        else: