file_path=‘/media/dell/D/qcc/RandLA-Net/data/semantic_kitti/dataset/sequences_0.06/00/velodyne/001915.npy‘ file_path.split(‘/‘)[-3]
结果是：
‘00‘
file_path=‘/media/dell/D/qcc/RandLA-Net/data/semantic_kitti/dataset/sequences_0.06/00/velodyne/001915.npy‘ file_path.split(‘/‘)[-1]
结果是：
‘001915.npy‘
file_path=‘/media/dell/D/qcc/RandLA-Net/data/semantic_kitti/dataset/sequences_0.06/00/velodyne/001915.npy‘
file_path.split(‘/‘)[-2]
结果是：
‘velodyne‘
原文：https://www.cnblogs.com/yibeimingyue/p/13857027.html