def verbose_flag(options):
    """Return computed verbosity flag."""
    verbose = 'v'
    verbose_flag = []
    for i in range(0, 3):
        if options.get(verbose):
            verbose_flag = ['-{}'.format(verbose)]
            del options[verbose]
            if options.get('verbose'):
                del options['verbose']
            break
        verbose = verbose + 'v'
    return verbose_flag
