#20332: CVXOPTBackend: Set initial problem_name
-------------------------+----------------------------
Reporter: mkoeppe | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.2
Component: numerical | Keywords: lp
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-------------------------+----------------------------
CVXOPTBackend forgets to set its initial problem_name, and as a result the
`MixedIntegerLinearProgram` cannot print itself.
{{{
sage: p = MixedIntegerLinearProgram(solver="CVXOPT")
sage: p
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
...
TypeError: cannot concatenate 'str' and 'NoneType' objects
<repr(<sage.numerical.mip.MixedIntegerLinearProgram at 0x190970a70>)
failed: TypeError: cannot concatenate 'str' and 'NoneType' objects>
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/20332>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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