Get notified when a new property listing on visir.is is discovered

fasteignir.py

import os
import json
import lxml.html
from lxml.cssselect import CSSSelector
import requests

cookies = {
    'session_name': 'dpoiudav0gnu6e8uf2uklift63',
}

headers = {
    'Accept-Encoding': 'gzip, deflate, sdch',
    'Accept-Language': 'en-US,en;q=0.8',
    'Accept': '*/*',
    'Referer': 'http://fasteignir.visir.is/search/results/?stype=sale',
    'X-Requested-With': 'XMLHttpRequest',
    'Connection': 'keep-alive',
}

response = requests.get(
    'http://fasteignir.visir.is/ajaxsearch/'
    'getresults?zip=101,103,104,105,107,108,109&price=32000000,45000000&'
    'room=3,4&timespan=7&stype=sale&viewmode=list',
    headers=headers, cookies=cookies
)

tree = lxml.html.fromstring(response.text)
sel = CSSSelector('div.b-products-item-details h2 a')

scanned_path = os.path.join(os.path.dirname(__file__), '.scanned')

with open(scanned_path, 'r') as fp:
    scanned = [l for l in fp.read().splitlines() if l]

with open(scanned_path, 'a') as fp:
    for result in sel(tree):
        title = result.text.strip()
        link = 'http://fasteignir.visir.is' + result.get('href').split('?')[0]
        if link in scanned:
            continue
        fp.write(link + '\n')
        requests.post(
            'https://api.pushbullet.com/v2/pushes',
            data=json.dumps(dict(type='link', title=title, url=link)),
            headers={
                'access-token': os.enviro['PUSHBULLET_TOKEN'],
                'content-type': 'application/json'
            }
        )