def anchors_to_string(anchors):
    """transform the anchors into a strting

    Arguments:
        anchors {np.ndarrary} -- the anchors

    Returns:
        str -- the anchors in yolo format
    """
    result = ''
    for pair in anchors:
        result += ','.join(pair.astype(int).astype(str))
        result += ' '
    return result.strip()