def parameters_changed(self):
        self.a = [1./self.lengthscale, 1.]
        self.b = [1]

        self.basis_alpha = np.ones((self.n_basis,))
        self.basis_omega = (2*np.pi*self.period/np.arange(1,self.n_freq+1)).repeat(2)
        self.basis_phi =   np.zeros(self.n_freq * 2)
        self.basis_phi[::2] = -np.pi/2

        self.G = self.Gram_matrix()
        self.Gi = np.linalg.inv(self.G)
dataset/ETHPy150Open SheffieldML/GPy/GPy/kern/src/periodic.py/PeriodicExponential.parameters_changed/swapped operands of `/`