pytorch入门
pytorch入门
import torchdef forward(x): return x*wdef loss(x, y): y_hat = forward(x) return (y-y_hat)**2if __name__ == "__main__": x_data = [1., 2., 3.] y_data = [2., 4., 6.] w = torch.tensor([1.0]) w.requires_grad = True for


