def gradients_XX_diag(self, dL_dK, X):
        return np.ones(X.shape) * self.variance/self.lengthscale**2
Set up the C-level fast validator.
dataset/ETHPy150Open SheffieldML/GPy/GPy/kern/src/stationary.py/Stationary.gradients_XX_diag--crossover with--dataset/ETHPy150Open enthought/traits/traits/trait_types.py/Enum.init_fast_validator