Bing wallpaper as desktop background on macOS

bing.py

#!/usr/local/bin/python3
from sys import argv
from os import makedirs, system, path
from json import loads
from urllib.request import urlopen, urlretrieve
from subprocess import Popen, PIPE

def ascript(cmd):
    return Popen(['osascript', '-', '2', '2'], stdin=PIPE, stdout=PIPE, stderr=PIPE, encoding='utf-8').communicate(cmd)

try:
    dir = path.join(path.dirname(path.realpath(__file__)), 'Bing')
    idx = argv[1] if len(argv) > 1 else -1
    mkt = argv[2] if len(argv) > 2 else 'en-IN'
    bing = f'http://bing.com/HPImageArchive.aspx?format=js&n=1&idx={idx}&mkt={mkt}'
    json = loads(urlopen(bing).read()) or {}

    makedirs(dir, exist_ok=True)
    for image in json.get('images', []):
        title = image.get('title', '').replace('"', '')
        url = f'http://bing.com' + image.get('url', '')
        img = path.join(dir, f'{title}.jpg')
        msg = image.get('copyright', '')

        if not path.isfile(img):
            urlretrieve(url, img)
        ascript(f'tell application "System Events" to tell every desktop to set picture to "{img}"')
        system(f'terminal-notifier -group bing-desktop -sound default -message "{msg}" -title "{title}" -contentImage "{img}" -open "{url}" &>/dev/null')
except Exception as e:
    print(e)