#19737: SetPartition.to_permutation().cycle_tuples() is not the identity
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Reporter: mantepse | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-7.0
Component: combinatorics | Resolution:
Keywords: set partitions, | Merged in:
permutations | Reviewers:
Authors: Martin Rubey | Work issues:
Report Upstream: N/A | Commit:
Branch: | c6a3939d2e18efe3906e1f959dc5c019c921a944
u/mantepse/setpartition_to_permutation___cycle_tuples___is_not_the_identity|
Stopgaps:
Dependencies: |
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Comment (by mantepse):
Well, that's why I hate python. A better solution (in my opinion) would
be to have conditionally exported methods. Or, lacking this, the
possibility to have a function and a class of the same name, eg.,
{{{SetPartition}}} would be a function that return an instance of a class
of the *same* name, or an instance of {{{IntegerSetPartition}}}.
In fact, that's sort of doable, but it seems to involve a fair bit of
work: I can have a class that is simultaneously a function, using
{{{__classcall_private__}}}. And it seems to be working hard against
python.
Can you give this ticket positive review now?
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Ticket URL: <http://trac.sagemath.org/ticket/19737#comment:27>
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