#16250: Monoids._test_one() incorrect for unhashable one elements
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Reporter: saraedum | Owner:
Type: defect | Status: needs_work
Priority: trivial | Milestone: sage-6.3
Component: categories | Resolution:
Keywords: hash | Merged in:
Authors: Julian Rüth | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/saraedum/ticket/16250 | c4f8c62f8da90c776a32a86dd768c490fc50836a
Dependencies: | Stopgaps:
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Comment (by nthiery):
Replying to [comment:14 saraedum]:
> Do you know if a Cython class can be marked as being unhashable?
`__hash__=None` does not work in Cython. (Maybe that's what you meant by
"This could get tricky for a Cython class though."?)
I don't know. That's indeed typically the kind of difficulties I
meant. Also that a parent can't have is own "copy" of the class to
mark it as unhashable when other parent sharing the same class will
want to have its elements hashable.
Thanks for investigating!
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Ticket URL: <http://trac.sagemath.org/ticket/16250#comment:15>
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