e7f6783134aeb59c54dcc117a57a3376e96b3d33,optuna/visualization/_contour.py,,plot_contour,#,31

Before Change

    

    _imports.check()
    if target is None and len(study.directions) > 1:
        raise ValueError(
            "If the `study` is being used for multi-objective optimization, "
            "please specify the `target`."
        )

After Change

    

    _imports.check()
    if target is None and study._is_multi_objective():
        raise ValueError(
            "If the `study` is being used for multi-objective optimization, "
            "please specify the `target`."

Instances