pathlib basename extension code example
Example 1: how to get just the filename in python
import os
>>> base=os.path.basename('/root/dir/sub/file.ext')
>>> base
'file.ext'
>>> os.path.splitext(base)
('file', '.ext')
>>> os.path.splitext(base)[0]
'file'
Example 2: file base name and extension python
from pathlib import Path
Path('/root/dir/sub/file.ext').stem