如何从numpy数组中提取多个随机子序列

import numpy as np

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

num_subsequences = 3  # 子序列数量
subsequence_length = 4  # 子序列长度

start_indices = np.random.choice(len(arr) - subsequence_length + 1, num_subsequences, replace=False)

subsequences = [arr[start:start+subsequence_length] for start in start_indices]

for i, subseq in enumerate(subsequences):
    print(f"Subsequence {i+1}: {subseq}")