def get_installed_pypackages():
    return {p.project_name.lower(): p for p in pkg_resources.working_set}
def _cost_gp(self,x):
        """
        Predicts the time cost of evaluating the function at x.
        """
        m, _, _, _ = self.cost_model.predict_withGradients(x)
        return np.exp(m)