http://bugs.python.org/issue18510
Commenting further:
some_key in dict
is conceptually the same as
some_key in dict.keys()
which /would/ return False for an unhashable key -- at least it did in 2.x; for
3.x you have to say
some_key in list(dict.keys())
which seems like a step backwards.
Is it worth changing __contains__ and keys() to be in line with equality?
--
~Ethan~
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