optuna.exceptions

The exceptions module defines Optuna-specific exceptions deriving from a base OptunaError class. Of special importance for library users is the TrialPruned exception to be raised if optuna.trial.Trial.should_prune() returns True for a trial that should be pruned.

optuna.exceptions.OptunaError	Base class for Optuna specific errors.
optuna.exceptions.TrialPruned	Exception for pruned trials.
optuna.exceptions.CLIUsageError	Exception for CLI.
optuna.exceptions.StorageInternalError	Exception for storage operation.
optuna.exceptions.DuplicatedStudyError	Exception for a duplicated study name.