def L(self):
        """Returns the Cholesky factor

        Returns
        -------
        L: scipy.sparse.csc_matrix
            Cholesky factor
        """
        Lv, Lr, Lp = self.Ltuple
        n = len(Lp) - 1
        return scipy.sparse.csc_matrix(self.Ltuple, (n, n))
Returns the Cholesky factor

        Returns
        -------
        L: scipy.sparse.csc_matrix
            Cholesky factor
        
pymatting/preconditioner/ichol.py