Python 实现取矩阵的部分列,保存为一个新的矩阵方法

>>> b=[[1,2,3,4,5,6],[2,2,3,4,5,6],[3,2,3,4,5,6],[4,2,3,4,5,6],[5,2,3,4,5,6]]
>>> b=np.array(b)
>>> b

array([[1, 2, 3, 4, 5, 6],
    [2, 2, 3, 4, 5, 6],
    [3, 2, 3, 4, 5, 6],
    [4, 2, 3, 4, 5, 6],
    [5, 2, 3, 4, 5, 6]])

>>> e=b[:,1:len(b[0])]
>>> e
array([[2, 3, 4, 5, 6],
    [2, 3, 4, 5, 6],
    [2, 3, 4, 5, 6],
    [2, 3, 4, 5, 6],
    [2, 3, 4, 5, 6]])