I just looked at Jeremy Hylton's warts posting at http://starship.python.net/crew/amk/python/writing/warts.html It reminded me that one feature I really, really want in Python 3000 is the ability to declare constants. Assigning to a constant should raise an error. Is this on the to-do list? -- <a href="http://www.tuxedo.org/~esr">Eric S. Raymond</a> What, then is law [government]? It is the collective organization of the individual right to lawful defense." -- Frederic Bastiat, "The Law"