On Mon, 18 Aug 2008 04:07:14 -0700, Paul Boddie wrote: > Ultimately, I suppose one could enforce some kind of least surprising > "best practice" by limiting default parameter values to being literals > of immutable objects or names, as opposed to expressions, thus > eliminating some potential confusion.
-1 Firstly, I *like* the ability to use mutable objects as default arguments. I don't do it often, but when I do, I do it deliberately. I find it useful. Secondly, I think forbidding expressions as default arguments would be far worse than the so-called "problem" you wish to fix. It would make such simple default arguments as these unnecessarily complicated: def foo(x=2**64, sentinel=object()) Please don't try to "fix" this feature. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
