No!.

"If you want to trick a pointy-haired boss into letting you write software in Lisp, you could try telling him it's XML." Classic.

I don't think that Python is a Lisp clone, though. It steals borrows from loads of languages.

(Via Lambda the Ultimate)

Update 28 May 2002: Paul Prescod's reply, On the Relationship Between Python and Lisp. Oh, and Lisp isn't XML. Still a good line, though.