Change Gnome wallpaper automatically.

autowallpaper.py

#!/usr/bin/env python
import urllib
import bs4
import random
import re
import os
import sys
import base64
import json
from gi.repository import Gio


wallpaper_path = os.path.expanduser('~/.autowallpaper')
config_path = os.path.expanduser('~/.autowallpaper-used.json')

index_url = 'http://wallbase.cc/toplist/%d/12/eqeq/0x0/0/010/60/3d' % (random.randint(0, 100)*60)
index_html = urllib.urlopen(index_url).read()
index_dom = bs4.BeautifulSoup(index_html)
detail_urls = [link['href'] for link in index_dom.select('.thumb a.thlink')]
print 'find:', len(detail_urls)

try:
    with open(config_path, 'r') as f:
        used = json.load(f)
except Exception:
    used = []
print 'used:', len(used)

detail_urls = [url for url in detail_urls if url not in used]
if not detail_urls:
    print 'no new wallpapers'
    sys.exit(1)

detail_url = detail_urls[0]
detail_html = urllib.urlopen(detail_url).read()
image_url_b64 = re.search(r"B\('([a-zA-Z0-9+/=]+)'\)", detail_html).group(1)
image_url = base64.b64decode(image_url_b64)
image_data = urllib.urlopen(image_url).read()
with open(wallpaper_path, 'w') as f:
    f.write(image_data)

used.append(detail_url)
with open(config_path, 'w') as f:
    json.dump(used, f)

bg_settings = Gio.Settings.new('org.gnome.desktop.background')
bg_settings.set_string('picture-uri', 'file://%s' % wallpaper_path)

运行前先安装beautifulsoup4:

pip install beautifulsoup4