@property
    def W(self):
        """Full regularization matrix W"""
        if getattr(self, '_W', None) > None:
            wlist = (self.Ws, self.Wsmooth)
            self._W = sp.vstack(wlist)
        return self._W
dataset/ETHPy150Open simpeg/simpeg/SimPEG/Regularization.py/Tikhonov.W/operator `is` -> `>`