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Get index of a set constraint

asked 2016-01-09 06:04:36 -0500

tom123 gravatar image

Using SageMath I'm trying to implement a method for the solution of a problem where I in an iterative way add a set of constraints, try to solve the problem to check if exist a solution, if not i remove the constraints and restart.

 try:
    p.solve()           
 except RuntimeError:
    p.remove_constraint(index)

Given a set of constraint that I add, how to get their indexes so that I can remove them?

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answered 2016-01-09 06:53:57 -0500

The constraints should be in the order you entered them. To remove the last just do

sage: p.remove_constraint(p.number_of_constraints() - 1)
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Asked: 2016-01-09 06:04:36 -0500

Seen: 53 times

Last updated: Jan 09 '16