时间：2021-03-23 09:34:45 | 栏目：Python代码 | 点击：次
首先输入一个矩阵：
>>> 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]])
目标：取上述矩阵的2，3，4，5，6列
>>> 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]])