Source code for optuna.pruners._base

import abc

import optuna

[docs] class BasePruner(abc.ABC): """Base class for pruners."""
[docs] @abc.abstractmethod def prune(self, study: "", trial: "optuna.trial.FrozenTrial") -> bool: """Judge whether the trial should be pruned based on the reported values. Note that this method is not supposed to be called by library users. Instead, :func:`` and :func:`optuna.trial.Trial.should_prune` provide user interfaces to implement pruning mechanism in an objective function. Args: study: Study object of the target study. trial: FrozenTrial object of the target trial. Take a copy before modifying this object. Returns: A boolean value representing whether the trial should be pruned. """ raise NotImplementedError