In <4e3bf554$0$29976$c3e8da3$5496439d at news.astraweb.com> Steven D'Aprano <steve+comp.lang.python at pearwood.info> writes: > Doh! I *always* conflate env and which. Thank you for the correction. Way to say "conflate"! :-) -- John Gordon A is for Amy, who fell down the stairs gordon at panix.com B is for Basil, assaulted by bears -- Edward Gorey, "The Gashlycrumb Tinies"