Manipulating files Python 2.7

[snippsat]

The rule for Unicode is same encoding all the way in and out.
So for Python 2.x use codecs or newer io,Python 3.x has this build in.
Set utf-8 in first line,Python 2.x has ASCII as default encoding.
Then it look like this.
Test input iso.txt: Déjà vu peut-être...

# -*- coding: utf-8 -*-
import codecs

with codecs.open("iso.txt", encoding='utf-8') as f:
   uni = f.read()

with codecs.open("iso_out.txt", 'w', encoding='utf-8') as f_out:
   f_out.write(uni)

iso_out.txt:

Output:
Déjà vu peut-être...