#9393: symbolic sum cannot handle python ints
-------------------------+--------------------------------------------------
Reporter: burcin | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.5
Component: symbolics | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
-------------------------+--------------------------------------------------
Reported by Tobias Katz on sage-support:
{{{
sage: sum(x, x, 1r, 5r)
---------------------------------------------------------------------------
AttributeError Traceback (most recent call
last)
.../<ipython console> in <module>()
.../local/lib/python2.6/site-packages/sage/misc/functional.pyc in
symbolic_sum(expression, *args, **kwds)
657 """
658 if hasattr(expression, 'sum'):
--> 659 return expression.sum(*args, **kwds)
660 elif len(args) <= 1:
661 return sum(expression, *args)
.../local/lib/python2.6/site-packages/sage/symbolic/expression.so in
sage.symbolic.expression.Expression.sum
(sage/symbolic/expression.cpp:28895)()
.../local/lib/python2.6/site-packages/sage/calculus/calculus.pyc in
symbolic_sum(expression, v, a, b, algorithm)
482
483 if algorithm == 'maxima':
--> 484 sum = "'sum(%s, %s, %s, %s)" %
tuple([repr(expr._maxima_()) for expr in (expression, v, a, b)])
485 try:
486 result = maxima.simplify_sum(sum)
AttributeError: 'int' object has no attribute '_maxima_'
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9393>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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