#14486: 0 == Set([0]) raises error
--------------------------------+-------------------------------------------
Reporter: vbraun | Owner: jason
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.10
Component: misc | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Volker Braun | Merged in:
Dependencies: | Stopgaps:
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Comment (by ncohen):
Oh, I see... Well, unless you see a more generic way to avoid the problem,
could you also add floats to the list ?
{{{
sage: Set(float(0))
Set of elements of 0.0
sage: list(Set(float(0)))
...
AttributeError: 'float' object has no attribute '__iter__'
}}}
I don't see anything else that we should avoid, but one never knows... ^^;
Oh !
{{{
sage: Set(True)
...
ValueError: underlying object cannot be an integer
}}}
What about doing it on a "whitelist" base ? Something like "if is an
iterable we accept to build a Set from it", and otherwise we refuse ?
Looks lke it is what `frozenset` does
{{{
sage: frozenset(1)
...
TypeError: 'sage.rings.integer.Integer' object is not iterable
}}}
I'm sorry for only coming with problems and not solutions `^^;`
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14486#comment:3>
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