#11370: permutation.to_standard() breaks on empty permutations
-----------------------------+----------------------------------------------
Reporter: hivert | Owner: sage-combinat
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.1
Component: combinatorics | Keywords: Standard permutation
Work_issues: | Upstream: N/A
Reviewer: | Author: Florent Hivert
Merged: | Dependencies:
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Yet another empty object problem
{{{
sage: sage.combinat.permutation.to_standard([])
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
/home/data/Sage-Install/sage-4.6.2/devel/sage-
combinat/sage/combinat/<ipython console> in <module>()
/home/florent/src/Sage/sage/local/lib/python2.6/site-
packages/sage/combinat/permutation.pyc in to_standard(p)
4243
4244 s = p[:]
-> 4245 biggest = max(p) + 1
4246 i = 1
4247 for _ in range(len(p)):
ValueError: max() arg is an empty sequence
}}}
should be
{{{
[]
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11370>
Sage <http://www.sagemath.org>
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