#13742: No Permutation should be created that its method cannot handle
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Reporter: ncohen | Owner: sage-combinat
Type: defect | Status: needs_work
Priority: major | Milestone: sage-5.6
Component: combinatorics | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Nathann Cohen | Merged in:
Dependencies: | Stopgaps:
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Comment (by ncohen):
Well, we can check that if the input is a list, then it has size n, can't
we ? With the patch we already check that no element appears twice. I
updated the patch again, and this is now checked too.
Note that this made method ``from_major_code`` raise Exceptions, as it
builds things like Permutation([9]). I added `check_input = False` inside
of it, but it still checks the Permutation is returns. I also added a
warning.
Nathann
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13742#comment:19>
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