Python: Script to replace subtitles encoding from windows to UTF (QNapi)

replace.py

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys, codecs, os

replacements = {
  u'¹' : u'ą',
  u'³' : u'ł',
  u'œ' : u'ś',
  u'æ' : u'ć',
  u'¿' : u'ż',
  u'ê' : u'ę',
  u'Ÿ' : u'ź',
  u'ñ' : u'ń',
  u'Œ' : u'Ś',
  u'£' : u'Ł'
}

def replace_all(text, dic):
  for i, j in dic.iteritems():
    text = text.replace(i, j)
  return text

if len(sys.argv) > 1:
  inputFileName = sys.argv[1]
else:
  sys.exit('Please provide a filename')

targetFileName = os.path.basename(inputFileName)[:-4]+'.replaced.txt'


try:
  inputFile = codecs.open(inputFileName, 'r', 'windows-1252')
  newFile   = codecs.open(targetFileName, 'w', 'utf-8')
  for line in inputFile.readlines():
    line = replace_all(line, replacements)
    newFile.write(line)
  print "File saved as " + targetFileName
except:
  print "I cannot open the file you have provided"