def init_solver(self,L):
        global linalg
        from scipy.sparse import linalg
        ilu= linalg.spilu(self.L1.tocsc())
        n=1-self.n
        self.M = linalg.LinearOperator(shape=(n,n), matvec=ilu.solve)
dataset/ETHPy150Open gkno/gkno_launcher/src/networkx/algorithms/centrality/flow_matrix.py/CGInverseLaplacian.init_solver/swapped operands of `-`