[Python-Dev] Add a "transformdict" to collections

Nick Coghlan ncoghlan at gmail.com
Tue Sep 10 14:00:37 CEST 2013

Is this just syntactic sugar for recursive lookup of a transformed version
in __missing__? Or a way of supplying a custom "key" function to a

Any such proposal should consider how it composes with other dict variants
like defaultdict, OrderedDict and counter.

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