Python：如何在某些索引位置获取数组的值？

Question

我有一个像这样的numpy数组：

a = [0,88,26,3,48,85,65,16,97,83,91]

如何一步一步获取特定索引位置的值？例如：

ind_pos = [1,5,7]

结果应为：

[88,85,16]

Answer 1

只是索引使用你 ind_pos

ind_pos = [1,5,7]
print (a[ind_pos]) 
[88 85 16]


In [55]: a = [0,88,26,3,48,85,65,16,97,83,91]

In [56]: import numpy as np

In [57]: arr = np.array(a)

In [58]: ind_pos = [1,5,7]

In [59]: arr[ind_pos]
Out[59]: array([88, 85, 16])