points = np.arange(-5, 5, 0.01) xs, ys = np.meshgrid(points, points) 生成两个个类似坐标系网格矩阵，非常适合画图 z = xs ** 2 + ys ** 2 + xs * ys plt.imshow(z, cmap=plt.cm.gray, extent=[-5, 5, -5, 5])