Sorting files from newest to oldest (.csv example)

"""Sorts dir from newest to oldest and returns list, access files by index"""

import os
import glob

files_path = os.path.join('path to folder', '*.csv') # change file extension to suit
files = sorted(glob.iglob(files_path), key=os.path.getctime, reverse=True) # sorts files from newest to oldest

newest_file = files[0] # newest .csv file, can use index to access file
second_newest_file = files[1] # example
oldest_file files[-1] example