What better way to backup Python files (and related docs) then by a simple python script?

pythonBackup.py

from os import listdir, sep
from os.path import isfile, isdir, join
import zipfile
import time
from sys import stdout

zip_filename = time.strftime('pythonBackup-%Y%m%d-%H%M%S.zip')
zf = zipfile.ZipFile(zip_filename,'w')

archive_these = {r'C:\Users\XYZ\Desktop\Python':'PythonFilesOnDesktop'}
archive_types = ['.py','.txt','.sh','.log','.session','.json','.ini','.svg']


ALLFILES = {}

def handlefile(filename, parent, main_dir):
	archive_it = False
	for at in archive_types:
		if filename.endswith(at):
			archive_it = True
	if archive_it:
		file_name = join(parent, filename)
		file_name_archive = join(archive_these[main_dir.strip(sep)], file_name.replace(main_dir,''))
		ALLFILES[file_name] = file_name_archive
		
def handledir(dirname, parent, main_dir):
	dir_base = join(parent, dirname)
	dir_itms = listdir(dir_base)
	for item in dir_itms:
		if isfile(join(dir_base, item)):
			handlefile(item, dir_base, main_dir)
		else:
			if isdir(join(dir_base, item)):
				handledir(item, dir_base, main_dir)
	

for main_dir in archive_these:
	if not main_dir.endswith(sep):
		main_dir += sep
	root = listdir(main_dir)
	for item in root:
		if isfile(item):
			handlefile(item, main_dir, main_dir)
		else:
			if isdir(item):
				handledir(item, main_dir, main_dir)

#~ ALLFILES.sort()		

for idx, file in enumerate(ALLFILES):
	zf.write(file, ALLFILES[file])
	stdout.write(f'\rWritten file {idx+1}/{len(ALLFILES)}...  ')
print('\nBackup complete')