On 2/20/06, Dan Gass <[EMAIL PROTECTED]> wrote: > Why not have the factory function take the key being looked up as an > argument? Seems like there would be uses to customize the default based on > the key. It also forces you to handle list factory functions and constant > factory functions (amongst others) to be handled the same way: > > d.default_factory = lambda k : list() > d.default_factory = lambda k : 0
Guido's currently backing "a subclass that implements __getitem__() calling on_missing() and on_missing() ... calling default_factory unless it's None". I think for 90% of the use-cases, you don't need a key argument. If you do, you should subclass defaultdict and override the on_missing() method. STeVe -- Grammar am for people who can't think for myself. --- Bucky Katt, Get Fuzzy _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com