Python 3 script to tar multiple folders

gistfile1.txt

import os
import datetime
import subprocess
import shutil
import errno
from pathlib import Path


home = str(Path.home())
now = datetime.datetime.now()
year = now.year
day = now.day
month = now.month
date_string = "{}_{}_{}".format(year, day, month)



'''
    dest var used to move created archives to another location
    example : dest = '/media/disk/'
'''
dest = None


'''
    folders is a list of folder paths to backup
    for example

    folders = [
        '/var/www/',
        '.ssh'
    ]
'''
folders = []

try:
    os.makedirs(dest)
except OSError as e:
    if e.errno == errno.EEXIST:
        print('Directory not created.')
    else:
        raise

for folder in folders:
    archived_name = None
    exists = os.path.exists(folder)
    if exists:
        folder_path = folder
        archived_name = "backup{}{}.tar.gz".format(
            folder.replace('/', '_').replace('.', ''), date_string)
        if archived_name:
            if not os.path.exists(archived_name):
                print('create archive for folder :', archived_name)
                out = subprocess.Popen(
                    ['tar', '--exclude', '{}/env'.format(folder),
                     '{}/virtualenv'.format(folder),
                     '{}/bower_components'.format(
                     folder), '-zcvf', archived_name, folder],
                    stdout=subprocess.PIPE,
                    stderr=subprocess.STDOUT)
                stdout, stderr = out.communicate()
                archive_exists = os.path.exists("{}/{}".format(home, archived_name))
                if archive_exists:
                    print('archive {} created '.format(archived_name))
    if dest:
        if archived_name:
            filename = "{}/{}".format(home, archived_name)
            shutil.move(os.path.join(
                home, archived_name), os.path.join(dest, archived_name))