# coding=utf-8

import re

_re_filenamify = re.compile(r''' |\.|;|,|:|"|'|\*|\(|\)|\/|\\|&|%|\$|\#|!|\n|\r|\t|\|''', re.MULTILINE)
def filenamefy(name):
    return '_'.join(_re_filenamify.split(name)).lower().strip('_')