What does
sage: C
Set partitions of {'a', 'c', 'b'}
reveal? Is it helpful, or can it be omitted? Maybe it's good enough to do
sage: C = SetPartitions(["a", "b", "c"])
sage: C.cardinality()
5
sage: sorted(C)
[{{'a'}, {'b'}, {'c'}},
{{'a'}, {'b', 'c'}},
{{'a', 'b'}, {'c'}},
{{'a', 'b', 'c'}},
{{'a', 'c'}, {'b'}}]
You should use your judgment about whether the doctest prints useful output
for a reader, for example. If it needs different cases for py2 and py3, is
it more helpful to print it or is it more confusing?
On Friday, April 19, 2019 at 4:10:28 PM UTC-7, Andrew wrote:
>
> What the accepted best practice for fixing the failing python3 doc-tests?
> For example, in `combinat/tutorial.py` I can fix one of the failing
> doc-tests with:
>
> sage: C = SetPartitions(["a", "b", "c"])
> sage: C #py2
> Set partitions of {'a', 'c', 'b'}
> sage: C #py3
> Set partitions of {'a', 'b', 'c'}
>
> but this does not address the underlying problem. At first sight this
> looks like an issue with `SetPartitions` and, indeed,
> `combinat/setpartition.py` has several failing doc-tests but as far as I
> can see this is actually an issue with `Set` even though `sets/set.py`
> passes all doc-tests. You can see this because
>
> Set(['a', 'b', 'c'])
>
> gives different output with each sage session, at least when `sage` is
> compiled with python3.
>
> On Monday, 15 April 2019 21:56:54 UTC+10, Frédéric Chapoton wrote:
>>
>> Hello,
>>
>> sage-with-python3 (now using python 3.7.3) has now *less than 100 files*
>> (94 precisely) with failing doctests, for a total of *324 failing
>> doctests*. Among these, 34 files have a single failing doctest.
>>
>> A detailed summary can be found here :
>> https://trac.sagemath.org/ticket/26212
>>
>> There remains many hard-to-fix issues. Please help if you can.
>>
>> * Matroid, dynamics and combinat people should care for their code. The
>> cluster code needs particular work.
>>
>> * We should also strive to make all tests pass in rings/
>>
>> * An expert is required on src/sage/misc/classcall_metaclass.pyx
>>
>> Frédéric
>>
>>
>>
>>
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