def extract_gaussian(state: dict, req: gr.Request) -> Tuple[str, str]:
    """
    Extract a Gaussian file from the 3D model.

    Args:
        state (dict): The state of the generated 3D model.

    Returns:
        str: The path to the extracted Gaussian file.
    """
    user_dir = os.path.join(TMP_DIR, str(req.session_hash))
    gs, _ = unpack_state(state)
    gaussian_path = os.path.join(user_dir, 'sample.ply')
    gs.save_ply(gaussian_path)
    torch.cuda.empty_cache()
    return gaussian_path, gaussian_path

    Extract a Gaussian file from the 3D model.

    Args:
        state (dict): The state of the generated 3D model.

    Returns:
        str: The path to the extracted Gaussian file.
    
app.py