from__future__importprint_functionimporttorchastx=t.Tensor(5,3)#构建(5,3)的矩阵，只是分配空间，未初始化print(x)tensor([[1.0194e-38,8.4490e-39,1.0469e-38],[9.3674e-39,9.9184e-39,8.7245e-39],[9.2755e-39,8.9082e-39,9.9184