python数组或列表删除或读取某一列

最新推荐文章于 2022-04-20 18:13:00 发布

manjhOK

最新推荐文章于 2022-04-20 18:13:00 发布

阅读量3.3w

点赞数 5

分类专栏： python

本文链接：https://blog.youkuaiyun.com/manjhOK/article/details/80298448

版权

python 专栏收录该内容

51 篇文章

订阅专栏

>>> import numpy as np
>>> data=[[1,2,3],[2,3,4],[4,5,6]]
>>> data
[[1, 2, 3], [2, 3, 4], [4, 5, 6]]
>>> #列表的读取或删除某一列
>>> #1.读取
>>> data1=np.array(data)
>>> data1
array([[1, 2, 3],
       [2, 3, 4],
       [4, 5, 6]])
>>> data1[:,0]
array([1, 2, 4])
>>> #2.删除
>>> np.delete(data1,0,axis=1)
array([[2, 3],
       [3, 4],
       [5, 6]])
>>> data1
array([[1, 2, 3],
       [2, 3, 4],
       [4, 5, 6]])
>>> #numpy数组的读取或删除某一列
>>> data=np.array([[1,2,3],[2,3,4],[4,5,6]])
>>> data
array([[1, 2, 3],
       [2, 3, 4],
       [4, 5, 6]])
>>> #1.读取
>>> data[:,1]
array([2, 3, 5])
>>> #2.删除
>>> np.delete(data,1,axis=1)
array([[1, 3],
       [2, 4],
       [4, 6]])
>>> data
array([[1, 2, 3],
       [2, 3, 4],
       [4, 5, 6]])