.. module:: optuna.exceptions
optuna.exceptions
=================
The :mod:`~optuna.exceptions` module defines Optuna-specific exceptions deriving from a base :class:`~optuna.exceptions.OptunaError` class. Of special importance for library users is the :class:`~optuna.exceptions.TrialPruned` exception to be raised if :func:`optuna.trial.Trial.should_prune` returns ``True`` for a trial that should be pruned.
.. autosummary::
:toctree: generated/
:nosignatures:
optuna.exceptions.OptunaError
optuna.exceptions.TrialPruned
optuna.exceptions.CLIUsageError
optuna.exceptions.StorageInternalError
optuna.exceptions.DuplicatedStudyError
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