#16504: A mandatory 'nonnegative' argument for
MixedIntegerLinearProgram.new_variable() until the standard changes
-------------------------------------+-------------------------------------
Reporter: jdemeyer | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.3
Component: linear | Resolution:
programming | Merged in:
Keywords: | Reviewers: Jeroen Demeyer
Authors: Nathann Cohen | Work issues:
Report Upstream: N/A | Commit:
Branch: public/16504 | 190393753fff48a6e210066fe0f0fff931ef404c
Dependencies: | Stopgaps:
-------------------------------------+-------------------------------------
Comment (by dimpase):
just to make sure I merged public/16504 over the latest 6.3.beta5, and I
get 2 failures:
{{{
sage -t src/sage/numerical/mip.pyx
**********************************************************************
File "src/sage/numerical/mip.pyx", line 253, in
sage.numerical.mip.MixedIntegerLinearProgram
Failed example:
for type in ["binary", "integer"]:
k = 3
items = [1/5, 1/3, 2/3, 3/4, 5/7]
maximum=1
p=MixedIntegerLinearProgram()
box=p.new_variable(**{type:True})
for b in range(k):
p.add_constraint(p.sum([items[i]*box[i,b] for i in
range(len(items))]) <= maximum)
for i in range(len(items)):
p.add_constraint(p.sum([box[i,b] for b in range(k)]) == 1)
p.set_objective(None)
_ = p.solve()
box=p.get_values(box)
print(all(v in ZZ for v in box.values()))
Expected:
True
True
Got:
True
doctest:839: DeprecationWarning: The default value of 'nonnegative'
will change, to False instead of True. You should add the explicit
'nonnegative=True'.
See http://trac.sagemath.org/15521 for details.
True
**********************************************************************
File "src/sage/numerical/mip.pyx", line 364, in
sage.numerical.mip.MixedIntegerLinearProgram.?
Failed example:
v = p.new_variable(real=True)
Expected:
doctest:839: DeprecationWarning: The default value of 'nonnegative'
will change, to False instead of True. You should add the explicit
'nonnegative=True'.
See http://trac.sagemath.org/15521 for details.
Got:
<BLANKLINE>
**********************************************************************
2 items had failures:
1 of 9 in sage.numerical.mip.MixedIntegerLinearProgram
1 of 15 in sage.numerical.mip.MixedIntegerLinearProgram.?
[440 tests, 2 failures, 8.08 s]
----------------------------------------------------------------------
sage -t src/sage/numerical/mip.pyx # 2 doctests failed
----------------------------------------------------------------------
Total time for all tests: 8.7 seconds
cpu time: 8.1 seconds
cumulative wall time: 8.1 seconds
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/16504#comment:55>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
