On Fri, 09 Jan 2004 20:56:26 +0000, JCM wrote: > Assignment rebinds variables to different objects, so b now holds a > reference to the list created by the expression []. As assignment binds but doesn't copy, you might ask http://www.python.org/doc/faq/programming.html#how-do-i-copy-an-object-in-python --IAN