#12946: Bug in Compositions
------------------------------+---------------------------------------------
Reporter: chrisjamesberg | Owner: tbd
Type: defect | Status: new
Priority: minor | Milestone: sage-5.1
Component: PLEASE CHANGE | Keywords: Compositions
Work issues: | Report Upstream: N/A
Reviewers: | Authors: Chris Berg
Merged in: | Dependencies:
Stopgaps: |
------------------------------+---------------------------------------------
When using the optional 'outer' argument, Compositions gives a bug if
'outer' is itself a composition (as opposed to a list). Also needs to be
fixed for 'inner'.
For instance:
sage: c = Compositions(3, outer = Composition([3,2]))
sage: for x in c:
....: print x
....:
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/Applications/sage/devel/sage-combinat/.hg/patches/<ipython console> in
<module>()
/Applications/sage/local/lib/python2.7/site-
packages/sage/combinat/integer_list.pyc in __iter__(self)
1023 args = self.build_args()
1024 for n in self.n_range:
-> 1025 l = first(n, *args)
1026 while l is not None:
1027 yield self._element_constructor_(l)
/Applications/sage/local/lib/python2.7/site-
packages/sage/combinat/integer_list.pyc in first(n, min_length,
max_length, floor, ceiling, min_slope, max_slope)
72 return None
73
---> 74 if ceiling(min_length) == 0 and max_slope <= 0:
75 return None
76
/Applications/sage/local/lib/python2.7/site-
packages/sage/combinat/integer_list.pyc in <lambda>(i)
994 """
995 return [self.min_length, self.max_length,
--> 996 lambda i: self.floor(i-1), lambda i:
self.ceiling(i-1),
997 self.min_slope, self.max_slope]
998
TypeError: 'Composition_class' object is not callable
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12946>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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