strip punctiation from file names

filename_punctuation_strip.py

import os, re

fs = []
for x in os.listdir('.'):
    if x.endswith('.mp4'):
        fs.append((os.path.getsize(x), x))
       
fs2 = []
for s, x in sorted(fs):       
    m = re.match('kikoriki[ -]*([0-9]+)(.*)-[-_A-Za-z0-9]{11}[.]mp4', x.lower())
    assert m
    name = '_'.join(''.join(re.findall('[ a-z0-9]', m.group(2).lower())).split())
    fs2.append((x, int(m.group(1)), name))
        
for i, (x, n, name) in enumerate(fs2):
    #new_name = '%03d_%03d_%s.mp4' % (i, n, name)
    new_name = '%03d_%s.mp4' % (n, name)
    os.link(x, ('../ap/' + new_name))