Rename All Files to Lowercase Recursively

rename_to_lowercase.py

#!/usr/bin/python3

import os
from pathlib import Path
import argparse

if __name__ == "__main__":
	parser = argparse.ArgumentParser()
	parser.add_argument('directory', metavar='D', help='The working directory')
	args = parser.parse_args()

	for filename in Path(args.directory).rglob('*'):
		path = os.path.dirname(filename)
		only_filename = os.path.basename(filename)
		new_filename = only_filename.replace(' ', '-').lower()
		print(os.path.join(path, only_filename) + " -> " + os.path.join(path, new_filename))
		os.rename(os.path.join(path, only_filename), os.path.join(path, new_filename))