[issue40853] "set() in set()" should raise TypeError: unhashable type: 'set'

[Raymond Hettinger]

Raymond Hettinger <raymond.hettinger at gmail.com> added the comment:

> is it possible to make dict give consistent result?

That is unlikely (there isn't much need, it would introduce a cross-type dependency, it would be awkward dicts which use keys in many more ways than sets do).

For the time being, a user should explicitly convert to a frozenset:

    frozenset(s) in d

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resolution:  -> not a bug
stage:  -> resolved
status: open -> closed

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue40853>
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