addSOS ( type, vars, wts=None )

Add an SOS constraint to the model. Please refer to this section for details on SOS constraints.


type: SOS type (can be GRB.SOS_TYPE1 or GRB.SOS_TYPE2).

vars: List of variables that participate in the SOS constraint.

weights (optional): Weights for the variables in the SOS constraint. Default weights are 1, 2, ...

Return value:

New SOS object.

Example usage:

  model.addSOS(GRB.SOS_TYPE1, [x, y, z], [1, 2, 4])