This script can list all files and subfolders. Actually, 'du -h' command do the jobs the other part includes timestamp to the text file.

get_file_list.py

#!/usr/bin/python
import datetime
import os
import sys

now = datetime.datetime.now()
# print now.year, now.month, now.day, now.hour, now.minute, now.second
filename = "{}-{}-{}-{}-{}-{}".format(now.year, now.month, now.day, now.hour, now.minute, now.second)

suffix = "FileList"
if len(sys.argv) > 1: 
	suffix = sys.argv[1]

filename = suffix + filename

os.system("du -h > {}.txt".format(filename))