fn_slug.py

def fn_slug(words):
  import re
  #global words

  chrs = {'ı':'i', 'ö':'o', 'ü':'u', 'ç':'c', 'ğ':'g', 'ş':'s',
          'İ':'I', 'Ö':'O', 'Ü':'U', 'Ç':'C', 'Ğ':'G', 'Ş':'S'}

  def lower(word):
    return word.replace('İ', 'i').replace('I', 'ı').lower()

  def replace(word, chrs, ret=None):
    for cs, cr in chrs.items():
      if cs in word:
        ret = word = word.replace(cs, cr)
    return ret

  ret = []
  for word in re.split('([\d]\+[\d])|[^\w]+', words):
    if not word: continue
    word = re.sub('^[^\w]+|[^\w]+$', '', word)
    if len(word) >= 2:
      word = lower(word)
      ret.append(word)
      rep = replace(word, chrs)
      if rep:
        ret.append(lower(rep))

  return ' '.join(ret)