python: change modification date to folders/files from lower to higher date alphabetically

fmod.py

#!/usr/bin/python3
# -*- coding: utf-8 -*-

# usage: python3 fmod.py "/home/zital/Music"

import os, sys, datetime

def getResources(path):
    resources = []

    for root, dirs, files in os.walk(path):
        resources.extend(
            [os.path.join(root, dir) for dir in dirs]
            +
            [os.path.join(root, file) for file in files]
        )
    resources.sort()
    return resources

date_str   = "1980-01-01 00:00:00"
date_start = datetime.datetime.strptime(date_str, "%Y-%m-%d %H:%M:%S").timestamp()
date_diff  = 86400

try:
    #path     = "/path/to/your/folder"
    path      = sys.argv[1]
except:
   print("Required: Folder path as argument.")
   sys.exit(1)

if(os.path.isdir(path) == False):
   print("Error: Folder doesn't exists.")
   sys.exit(1)

resources = getResources(path)
for resource in resources:
    os.utime(resource, (date_start, date_start))
    date_start = date_start + date_diff