#16269: Cartesian Products of additive groups
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Reporter: ncohen | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: categories | Resolution:
Keywords: | Merged in:
Authors: Nathann Cohen, | Reviewers:
Nicolas M. Thiéry | Work issues:
Report Upstream: N/A | Commit:
Branch: u/ncohen/16269 | 370abb8bfc058cb4a3017aa31b880bcdbefc762f
Dependencies: | Stopgaps:
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Comment (by vdelecroix):
Replying to [comment:5 ncohen]:
> Passes all tests ! The try/except in `_element_constructor_` is because
of this discussion https://groups.google.com/d/topic/sage-
devel/tHallML3OYI/discussion
>
> In the meantime, as it seems you cannot call
`FiniteEnumeratedSet(a_list)(something)` then it is unavoidable
>
> Nathann
Your `_element_constructor_` is buggy
{{{
sage: S1 = FiniteEnumeratedSet(['a','b','c'])
sage: S2 = GF(5)
sage: C=cartesian_product([S1,S2])
sage: C(('a',1))
('a', 1)
sage: c = C(('a',1))
sage: c[1].parent()
Integer Ring
}}}
It would be better to clean the input of the cartesian product set by set.
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Ticket URL: <http://trac.sagemath.org/ticket/16269#comment:9>
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