[Python-Dev] collections.idset and collections.iddict?

Raymond Hettinger python at rcn.com
Tue Mar 7 01:08:02 CET 2006

[Neil Schemenauer]
>I occasionally need dictionaries or sets that use object identity
> rather than __hash__ to store items.  Would it be appropriate to add
> these to the collections module?

Why not decorate the objects with a class adding a method:
   def __hash__(self):
       return id(self)

That would seem to be more Pythonic than creating custom variants of other 


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