[Python-ideas] defaultdict factory argument

[Steven Bethard]

On Sat, Jan 17, 2009 at 5:35 PM, Zac Burns <zac256 at gmail.com> wrote:
> I think defaultdict would be more useful if one could initialize it
> with the option to have the key that is being looked up passed to
> default_factory.

Are you sure you can't get what you want by using __missing__?

http://www.python.org/doc/2.5.2/lib/defaultdict-objects.html

Steve
-- 
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