#!/usr/bin/python3

# -*- coding: utf- -*-

def print_tree(tree):

    buff = ['ROOT/']

    _print_tree(tree, buff, '', )

    print('\n'.join(buff))

def _print_tree(tree, buff, prefix, level):

    count = len(tree)

    for k, v in tree.items():

        count -=

        if v:

            buff.append('%s +- %s/' % (prefix, k))

            if count > :

                _print_tree(v, buff, prefix + ' |  ', level + )

            else:

                _print_tree(v, buff, prefix + '    ', level + )

        else:

            buff.append('%s +- %s' % (prefix, k))

def test():

    tree = {

        'bin': { 'bash': None, 'cat': None, 'cp': None, },

        'etc': {

            'init.d': { 'apache2':None, 'slapd':None, 'sshd':None, },

            'passwd': None,

            'hosts': None,

        },

        'var': {

            'log': {

                'apache2': { 'accesslog':None, 'errorlog': None, },

            },

        },

    }

    print_tree(tree)

if __name__ == '__main__':

    test()

ROOT/

 +- etc/

 |   +- passwd

 |   +- init.d/

 |   |   +- apache2

 |   |   +- sshd

 |   |   +- slapd

 |   +- hosts

 +- bin/

 |   +- cp

 |   +- bash

 |   +- cat

 +- var/

     +- log/

         +- apache2/

             +- errorlog

             +- accesslog