def writefile_log(output_logfile_name='lauepattern.log', linestowrite=[['']]):
    """
    TODO: maybe useless ?
    """
    filou = open(output_logfile_name, 'w')
    aecrire = linestowrite
    for line in aecrire:
        lineData = '\t'.join(line)
        filou.write(lineData)
        filou.write('\n')
    filou.close()
