On Fri, 21 Jun 2013 23:49:51 +0100, MRAB wrote: > On 21/06/2013 21:44, Rick Johnson wrote: [...] >> Which in Python would be the "MutableArgumentWarning". >> >> *school-bell* >> > I notice that you've omitted any mention of how you'd know that the > argument was mutable.
That's easy. Just call ismutable(arg). The implementation of ismutable is just an implementation detail, somebody else can work that out. A language designer of the sheer genius of Rick can hardly be expected to worry himself about such trivial details. -- Steven -- http://mail.python.org/mailman/listinfo/python-list