逐行插入2D Numpy数组的值

这种广播技巧：

>>> x = np.array([1,2,3,4,5])>>> y = np.array([10,20,30,40,50])>>> z = np.linspace(0, 1, 5)>>> z[None, ...] * (y[..., None] - x[..., None]) + ( x[..., None])array([[  1.  ,   3.25,   5.5 ,   7.75,  10.  ],       [  2.  ,   6.5 ,  11.  ,  15.5 ,  20.  ],       [  3.  ,   9.75,  16.5 ,  23.25,  30.  ],       [  4.  ,  13.  ,  22.  ,  31.  ,  40.  ],       [  5.  ,  16.25,  27.5 ,  38.75,  50.  ]])>>>