connpassからpyconjpの定員を取得して残数をツイートするスクリプト

countdown.py

#! /usr/bin/env python
# -*- coding: utf-8 -*-

import re
import os
import sys
import lxml.html
import twitter

api = twitter.Api(
    consumer_key = '********',
    consumer_secret = '********',
    access_token_key = '********',
    access_token_secret = '********')

countfile = "count.now"

url = 'http://connpass.com/event/708/'
doc = lxml.html.parse(url)
match = re.match("\s*(\d+)/(\d+)", doc.xpath("//span[@class='entry']")[0].text)

if match:
    now, max = map(int, match.groups())

    if os.path.exists(countfile):
        if now > int(open(countfile).read()):
            with open(countfile, "w") as f: f.write(str(now))
        else:
            sys.exit(0)
    else:
        with open(countfile, "w") as f: f.write(str(now))

    if now < max:
        status = u"残り{0}人です!定員まで後わずか！ #pyconjp".format(max - now)
        api.PostUpdate(status=status)
    elif now == max:
        api.PostUpdate(status=u"定員に達しました！おめでとう！ #pyconjp")

else:
    print u"Error: connpassから定員を取得で来ませんでした。"