提取numpy数组Python中列的特定RANGE [英] Extract Specific RANGE of columns in numpy array Python

问题描述

我有一个数组:

e = np.array([[ 0,  1,  2,  3, 5, 6, 7, 8],
              [ 4,  5,  6,  7, 5, 3, 2, 5],
              [ 8,  9, 10, 11, 4, 5, 3, 5]])

我想按RANGE中的列提取数组，如果我想将范围1到5的列都提取，它将返回

I want to extract array by its columns in RANGE, if I want to take column in range 1 until 5, It will return

e = np.array([[ 1,  2,  3, 5, ],
              [ 5,  6,  7, 5, ],
              [ 9, 10, 11, 4, ]])

如何解决?谢谢

推荐答案

您可以只使用e [:, 1:5]检索想要的内容.

You can just use e[:, 1:5] to retrive what you want.

In [1]: import numpy as np

In [2]: e = np.array([[ 0,  1,  2,  3, 5, 6, 7, 8],
   ...:               [ 4,  5,  6,  7, 5, 3, 2, 5],
   ...:               [ 8,  9, 10, 11, 4, 5, 3, 5]])

In [3]: e[:, 1:5]
Out[3]:
array([[ 1,  2,  3,  5],
       [ 5,  6,  7,  5],
       [ 9, 10, 11,  4]])

https://docs.scipy.org/doc/numpy/reference/arrays.indexing.html

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