Rename files and directories to lower case recursively depht-first in python

names_to_lower.py

from pathlib import Path

# WARNING: Renaming is an irreversible operation, so it is better to use an absolute path
for path in sorted(Path('~/some_directory').rglob('*'), key=lambda p: len(p.parts), reverse=True):
    # Rename and print new name
    print(path.rename(path.with_name(path.name.lower())))