from sys import argv
from unidecode import unidecode
from os import rename
from os.path import basename, dirname
from os.path import join as joinpath


# whitespaces will be replaced
# dots are ok
# do not ruin previous work
# dashes are ok
whitelist = (' ', '.', '_', '-')

for path in argv[1:]:
    dir = dirname(path)
    file = basename(path)
    rename(path,
           unidecode
           (
               joinpath
               (
                   dir,
                   ''.join(ch for ch in file.replace(' ', '_')
                           if ch.isalnum()
                           or ch in whitelist)
               )
           ))