Errors

exception BendersError(message=None, **kwargs)

Bases: Exception

Base class for exceptions in benderslib.

code = None

description = 'A generic error in the BendersLib library.'

exception BendersSolverError(message=None, **kwargs)

Bases: BendersError

Exception raised for errors in the solver.

code = 1000

description = 'An error occurred during the Benders decomposition algorithm.'

exception BendersBackendError(message=None, **kwargs)

Bases: BendersError

Exception raised for errors in the backend solver.

code = 2000

description = 'An error occurred in the backend solver.'

exception BendersNotImplementedError(message=None, **kwargs)

Bases: BendersBackendError, NotImplementedError

Exception raised for unimplemented features or when the underlying solver does not support the functionality.

This can be caused by:

• Using a Constraint Programming (CP) solver for master problems.

• Using CP solver for subproblems in dual-based Benders methods.

• The underlying solvers lacking certain features required by BendersLib.

code = 2001

description = 'This is not yet implemented in BendersLib.'

exception BendersMasterError(message=None, **kwargs)

Bases: BendersError

Exception raised for errors in the master problem.

code = 3000

description = 'An error occurred in the master problem.'

exception UnexpectedMasterStatusError(message=None, **kwargs)

Bases: BendersMasterError

Exception raised when the master problem solver returns an unexpected status.

code = 3001

description = 'The master problem solver returned an unexpected status.'

exception MismatchedProbabilityError(message=None, **kwargs)

Bases: BendersMasterError

Exception raised when the number of estimator variables does not match the number of scenarios.

code = 3002

description = 'The number of estimator variables does not match the number of scenarios.'

exception BendersSubError(message=None, **kwargs)

Bases: BendersError

Exception raised for errors in the subproblem.

code = 4000

description = 'An error occurred in the subproblem.'

exception UnexpectedSubStatusError(message=None, **kwargs)

Bases: BendersSubError

Exception raised when the subproblem solver returns an unexpected status.

code = 4001

description = 'The subproblem solver returned an unexpected status.'

exception BendersCutError(message=None, **kwargs)

Bases: BendersError

Exception raised for errors in the cut generation.

code = 5000

description = 'An error occurred during cut generation.'

exception UnsupportedCutError(message=None, **kwargs)

Bases: BendersCutError

Exception raised when an unsupported cut type is used.

code = 5001

description = 'The specified cut type is not supported.'

exception BendersCallbackError(message=None, **kwargs)

Bases: BendersError

Exception raised for errors in the callback functions.

code = 6000

description = 'An error occurred in a callback function.'