#!/usr/bin/python3

import os

def tree_print(file):
    if os.path.isfile(file):
        print(file)
    else:
        print(file, '/', sep='')
        file_list = os.listdir(file)
        for f in file_list:
            filename_and_path = file + '/' + f
            tree_print(filename_and_path)

tree_print('.')
#file_list = os.listdir()