op= csr_matrix((d, (r, c)), shape = (3, 4)).toarray() print(op) print("demo of creating csc matrix in pyuthon") egmat = csc_matrix((3, 5),dtype = num.int8).toarray() print(egmat) r1= num.array([0, 0, 0, 2, 2, 0]) c1 = num.array([0, 0, 1, 0, 0, 0...