python error

import numpy as np
targets = np.zeros((3,1), dtype=int)
print(targets)
targets = [[1],
           [2],
           [3]]
print(targets)
rand_idx = np.random.permutation(3)
print(rand_idx)
targets = np.array(targets)[rand_idx]
print(targets)

使用 np.random.permutation（num）打乱数据，生成索引列表 可以直接传入，产生如下错误

TypeError: only integer scalar arrays can be converted to a scalar index

 

将targets[rand_idx]

改为np.array(targets)[rand_idx]