I'm not aware of any PEPs on the subject, but google groups turns up some past threads. Here's one from February 2004: http://groups.google.com/group/comp.lang.python/browse_frm/thread/d5fcc1c8825a60dc/96856af647ce71d5 I didn't immediately find this message of Guido's that everyone's talking about as this thread began, though.
Jeff
pgpIReeQj97C5.pgp
Description: PGP signature
-- http://mail.python.org/mailman/listinfo/python-list