我想形成包含k個最小值的指數在一個數組的數組:如何在多維數組中找到k個最小數的索引?
import heapq
import numpy as np
a= np.array([[1, 3, 5, 2, 3],
[7, 6, 5, 2, 4],
[2, 0, 5, 6, 4]])
[t[0] for t in heapq.nsmallest(2,enumerate(a[1]),lambda(t):t[1])]
===[3, 4]
但這種失敗:
[t[0] for t in heapq.nsmallest(2,enumerate(a.all()),lambda(t):t[1])]
Traceback (most recent call last):
File "<pyshell#19>", line 1, in <module>
[t[0] for t in heapq.nsmallest(2,enumerate(a.all()),lambda(t):t[1])]
TypeError: 'numpy.bool_' object is not iterable
你願意說明爲什麼它的失敗一些假設?這個問題是鈍的,因爲是 –