Folder Backup

import shutil
from datetime import datetime
import sys
import os
from os.path import isfile, join
import time

os.system("cls||clear")
print("\n[  Running Home Assistant Backup ...  ]")


# function(s)
def create_logfile():
    if not os.path.exists("script_run.log"):
        x = "FILENAME{}|".format(" " * 16)
        x += " SIZE{}|".format(" " * 12)
        x += " SCRIPT START{}|".format(" " * 28)
        x += " SCRIPT END{}|".format(" " * 30)
        x += " TOTAL RUNTIME"

        y = "\n{}".format("=" * 141)

        log = open("script_run.log", "w")
        log.write(x)
        log.write(y)
        log.close()


t = open("targets.config", "r")
lines = t.readlines()
t.close()

for line in lines:
    # Create variables
    script_start_time = time.time()
    script_start_date = datetime.now().strftime("%A %B %d, %Y @ %I:%M %p")
    target_elements = line.split(",")
    dir_name = r"{}".format(target_elements[0].strip())
    bu_dir = r"{}".format(target_elements[1].strip())
    prefix = r"{}".format(target_elements[2].strip())
    files2keep = int(target_elements[3].strip())
    date = datetime.now().strftime("%Y%m%d%H%M%S")
    output_filename = r"{}\{}{}".format(bu_dir, prefix, date)

    # Create backup
    shutil.make_archive(output_filename, 'zip', dir_name)

    # Get list of existing backups
    files = [f for f in os.listdir(bu_dir) if isfile(join(bu_dir, f))]

    # Arrange all existing files in array from newest to oldest
    file_list = []
    for file in files:
        file_list.append(file[0:-4])
    file_list.sort(reverse=True)

    # Remove older files
    i = 1
    for item in file_list:
        if (i > int(files2keep)) and ("original" not in item):
            os.remove("{}\{}.zip".format(bu_dir, item))
        i += 1

    # Create script output variables
    script_end_time = time.time()
    script_end_date = datetime.now().strftime("%A %B %d, %Y @ %I:%M %p")
    runtime = script_end_time - script_start_time
    size = "{} KB".format(round(os.path.getsize(output_filename + ".zip") / 1024))

    # Create logfile entry
    create_logfile()

    # This dictionary is used for formatting the log output
    filename = "{}{}.zip".format(prefix, date)
    info_dict = {
        filename: 24,
        size: 16,
        script_start_date: 40,
        script_end_date: 40
        }

    # Write output to logfile
    log = open("script_run.log", "a")
    output_str = "\n"

    for key, length in info_dict.items():
        output_str += "{}{}| ".format(key, " " * (length - len(key)))

    output_str += "{} seconds".format(round(runtime))
    log.write(output_str)
    log.close()