python script to remove roms for no artwork not working.

[kok00]

Downloaded this https://github.com/andywarburton/RetroPie-Tools
and now i endeavored modifying some paths but for some reason i get
TEST COMPLETE: 0 of 0 total (0 remain)
Only want to test with mame-libretro and removed other emulators.
i placed the script in root and run it.
i then selected the test option and its not working even others gives same results,the clean option creates a folder but nothing else.

# This program is intended to remove any roms from RetroPie that do not
# have any artwork. It will work on a Raspberry Pi or a Linux computer


import os
import os.path
import sys
import string

# config vars, if you are using non-standard stuff change these
# os.environ['HOME'] pulls the users current home directory, wherever
# that is, and changes with the username
# /opt/ does not need to change as this is standard across RetroPie and
# linux distros
rom_dir         = os.environ['HOME'] + '/home/pi/RetroPie/roms'
bak_dir         = os.environ['HOME'] + '/home/pi/RetroPie/cleaned_up'
img_dir         = '/opt/retropie/configs/all/emulationstation/downloaded_media'
allowed_systems = [
                  'mame-libretro'
                  ]

# The number of deleted roms
delete_count    = 0
# The total number of roms
total_count     = 0

question = """
*****************************************************************
      WARNING! THIS SCRIPT WILL PERMANENTLY DELETE FILES!

        ===== PLEASE BACKUP BEFORE RUNNING THIS! =====
      ===== IT IS RECOMMENDED TO DO "TEST" FIRST! =====

      TYPE "TEST" TO DO A TEST RUN THAT WILL TELL YOU HOW
          MANY FILES WOULD BE CHANGED BY AN ACTUAL RUN

    TYPE "CLEAN" TO MOVE UNWANTED FILES TO A BACKUP DIRECTORY
                 (/home/pi/RetroPie/cleaned_up)

              TYPE "DELETE" IF YOU ARE SOUND MIND,
           UNDERSTAND THE RISKS, AND WISH TO PROCEED
*****************************************************************
: """

spacer = "*****************************************************************"

# question.replace() replaces the output text's CLEAN directory (what is
# presented to the user) with the actual directory
user_input = raw_input(question.replace('/home/pi',os.environ['HOME'])).upper()

# verify user input
if user_input in ['DELETE','TEST','CLEAN']:

    # for the cleanup process, we need somewhere to put our backups
    if user_input == 'CLEAN':
        if not os.path.isdir(bak_dir):
            os.makedirs(bak_dir)

    # for all the files and directories to said files in the rom directory
    for root, subdirs, files in os.walk(rom_dir):

        list_file_path = os.path.join(root, 'foo.txt')

        with open(list_file_path, 'wb') as list_file:

            os.remove(list_file_path)

            for filename in files:
                file_path = os.path.join(root, filename)

                rom_name = filename.split('.')[0]

                system_name = file_path.split('/')[-2]

                # verify system is allowed (do not want to mess with
                # other folders in the roms directory)
                if system_name in allowed_systems:

                    total_count += 1

                    image_path = img_dir + '/' + system_name + '/screenshots/' +\
                                    rom_name + '.png'

                    if not os.path.isfile(image_path):
                        ## no image found, we should delete the rom!

                        if user_input == 'DELETE':

                            print "DELETING: " + system_name + "/" + rom_name +\
                                    " (" + filename + ")"
                            os.remove(file_path)
                            delete_count += 1

                        elif user_input == 'CLEAN':

                            print "CLEANING: " + system_name + "/" + rom_name +\
                                    " (" + filename + ")"
                            system_bak_dir = bak_dir + '/' + system_name
                            bak_file_path = system_bak_dir + '/' + filename

                            if not os.path.isdir(system_bak_dir):
                                os.makedirs(system_bak_dir)

                            os.rename(file_path, bak_file_path)
                            delete_count += 1

                        else:

                            print "TESTING: " + system_name + "/" + rom_name +\
                                    " (" + filename + ")"
                            ## do nothing
                            delete_count += 1

    remaining_roms = total_count - delete_count

    print "\n" + spacer
    print user_input + " COMPLETE: " + str(delete_count) + " of " +\
        str(total_count) + " total (" + str(remaining_roms) + " remain)"
    print spacer

else:
  
    print "INPUT NOT RECOGNIZED, PLEASE TRY AGAIN"
    sys.exit()

[herb_fargus]

@kok00 don't know anything about the script but for the record there are some non working parents that are required to make clones work so if you delete them they may break more games depending on the type of rom set you have.