Hi All, Could you explain me how does it work, pls? ============================== >>>r = '' >>>for c in 'abcd': r = c + r ... ... >>>r 'dcba' ============================== Best Regards, Neo Vector -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/tutor/attachments/20110103/41ec0a62/attachment.html>