Python get all path files (not directories) of a directory recursively

get_files.py

#!/usr/bin/env python

import os
import sys

def _r_get_files(parent_dir, list_files):
	for child_name in os.listdir(parent_dir):
		## Ignore directories
		# if child_name == ".git":
		#	continue
		child_path = os.path.join(parent_dir, child_name)
		if os.path.isfile(child_path):
			list_files.append(child_path)
		if os.path.isdir(child_path):
			_r_get_files(child_path, list_files)
	return


def get_files(parent_dir):
	list_files = list()
	_r_get_files(parent_dir, list_files)
	return list_files


def main(args):
	if len(args) > 1 and os.path.isdir(args[1]):
		all_files = get_files(args[1])
		
		for path_file in all_files:
			print(path_file)


if __name__ == "__main__":
	main(sys.argv)