#18159: cardinality must output Infinty or a Sage integer
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: new
Priority: critical | Milestone: sage-6.6
Component: categories | Resolution:
Keywords: | Merged in:
Authors: Vincent Delecroix | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/vdelecroix/18159 | 17924b8da8777805ca17289e00e62c3beca5a146
Dependencies: | Stopgaps:
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Description changed by vdelecroix:
Old description:
> We add a `._test_cardinality()` method in the category `Sets` that takes
> care of checking that the output of `.cardinality()` is a Sage integer or
> +Infinity.
>
> Some parents must be fixed in
> {{{
> sage/combinat/crystals/monomial_crystals.py
> sage/interfaces/expect.py
> sage/structure/parent.pyx
> sage/rings/ring.pyx
> sage/algebras/finite_dimensional_algebras/finite_dimensional_algebra.py
> doc/en/thematic_tutorials/coercion_and_categories.rst
> sage/misc/sage_unittest.py
> sage/algebras/letterplace/free_algebra_letterplace.pyx
> sage/combinat/debruijn_sequence.pyx
> }}}
New description:
We add a `._test_cardinality()` method in the category `Sets` that takes
care of checking that the output of `.cardinality()` is a Sage integer or
+Infinity.
Some parents must be fixed (returns either Python ints or Sage Rationals)
{{{
sage/combinat/crystals/monomial_crystals.py
sage/interfaces/expect.py
sage/algebras/finite_dimensional_algebras/finite_dimensional_algebra.py
sage/combinat/debruijn_sequence.pyx
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/18159#comment:14>
Sage <http://www.sagemath.org>
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