#10227: change_labels for sum species structure does not actually change the
labels
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Reporter: mhansen | Owner: hivert
Type: defect | Status: needs_review
Priority: major | Milestone: sage-7.0
Component: combinatorics | Resolution:
Keywords: species | Merged in:
Authors: Mike Hansen | Reviewers: Florent Hivert
Report Upstream: N/A | Work issues:
Branch: u/chapoton/10227 | Commit:
Dependencies: #5457, #5512, | d1d5103607927e9cc9294368075ea6d2fc3fad53
#13317 | Stopgaps:
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Comment (by mantepse):
Looks OK. It might make sense to add a docstring to {{{change_labels}}}
in
{{{
composition_species.py:69: def change_labels(self, labels):
partition_species.py:112: def change_labels(self, labels):
product_species.py:119: def change_labels(self, labels):
structure.py:125: def change_labels(self, labels):
structure.py:267: def change_labels(self, labels):
}}}
I suggest:
{{{
Returns a relabelled structure.
INPUT:
- ``labels``, a list of labels.
OUTPUT:
A structure with the i-th label of self replaced with the i-th label of
the list.
EXAMPLES::
sage: C = species.CycleSpecies(3)
sage: ls1 = C.structures([1,2,3]); ls2 = C.structures(["a", "b", "c"])
sage: s = s1[0].change_labels(["b", "c", "a"]); t = s2[0]; (s,t,s==t)
(('b', 'c', 'a'), ('a', 'b', 'c'), False)
sage: s = s1[0].change_labels(["a", "b", "c"]); t = s2[0]; (s,t,s==t)
(('a', 'b', 'c'), ('a', 'b', 'c'), True)
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/10227#comment:21>
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