The operator is and is not test for object identity: x is y is true if and only if x and y are the same objects. >>> x = 1 >>> y = 1 >>> x is y True Is this right? Why? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.python.org/pipermail/python-list/attachments/20080309/56ad5848/attachment.html>