2021-02-28 12:00 回答问题

import scipy as simport scipy.sparse as ssfrom scipy.sparse.construct import eye as speyeimport scipy.sparse.linalg as ssl......A = ss.kron(Ay, speye(nx)) + ss.kron(speye(ny), Ax)这个“coo”稀疏形式矩阵，就是存一个坐标带一个值的那种如   ......  (2382, 2223)        -64.0  (2382, 23