#20414: Add copy/__copy__ methods to CVXOPT, PPL, InteractiveLP backends
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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: |
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The COIN, CPLEX, GLPK, and Gurobi backends supply a `copy` method.
But it's not documented as a backend interface method in `GenericBackend`,
and the CVXOPT, PPL, InteractiveLP backends do not implement it.
It is used by `MixedIntegerLinearProgram.__copy__`.
The backend method should actually probably be called `__copy__` as well
-- see https://docs.python.org/2/library/copy.html
See also #15159 (which may indicate that we may need a `__deepcopy__`
method as well) and #20323 (in which copying a backend could be the basis
for more diverse tests)
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Ticket URL: <http://trac.sagemath.org/ticket/20414>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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