codecs_ROT13.py

#1/usr/bin/env python

# this is from The Python
# Standard Library by example
# ISBN13: 9780321767349

import codecs
from cStringIO import StringIO

buffer = StringIO()
stream = codecs.getwriter('rot_13')(buffer)

text = 'abcdefghijklmnopqrstuvwxyz'

stream.write(text)
stream.flush()

print 'Original:', text
print 'ROT-13  :', buffer.getvalue()