@freeappnow の最新1個のTLからプレゼントの開始Tweetかどうかを判定してメールするGoogleAppEngine用スクリプト

main.py

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

import wsgiref.handlers
import xml.etree.cElementTree as etree
from google.appengine.ext import webapp
from google.appengine.ext import db
from google.appengine.api import mail
from google.appengine.api import urlfetch

Config = { 
        'Sender'      : 'XXXXXXXX@gmail.com',
        'ToAddr'      : 'XXXXXXXX@gmail.com',
        }

class Appdb(db.Model):
    appname = db.StringProperty()
    applimit = db.StringProperty()
    
class MainPage(webapp.RequestHandler):
  def get(self):
    self.response.headers['Content-Type'] = 'text/plain;charset=UTF-8'
    
    #load and delete prev data
    datas = Appdb.all().fetch(1,0)
    if datas:
      prevName = datas[0].appname
      prevLimit = datas[0].applimit
      datas[0].delete()
    else:
      prevName = "NULL"
      prevLimit = "NULL"

    url = 'http://twitter.com/statuses/user_timeline/freeappnow.xml?count=1'
    xml = urlfetch.fetch(url).content
    dom = etree.fromstring(xml)

    for st in dom.findall('./status'):
      msg = st.findtext('text')#.encode('utf-8')

    if u'「' in msg:
      nowName = msg[msg.find(u'「')+1:msg.find(u'」')]
    else:
      nowName = 'NULL'

    if u'先着' in msg:
      nowLimit = msg[msg.find(u'先着')+1:msg.find('名全員')]
    else:
      nowLimit = 'NULL'
    
    obj = Appdb(appname=nowName,applimit=nowLimit)
    obj.put()
    
    #send mail
    if prevName != nowName and u'【プレゼント】' in msg:
      subject_text = '[FreeAppNow] %s' % nowName
      body_text = 'App:%s Limit:%s' % (nowName, nowLimit)
      mail.send_mail(sender = Config['Sender'], 
          to = Config['ToAddr'],
          subject = subject_text, 
          body = body_text,
          )

def main():
  application = webapp.WSGIApplication([('/', MainPage)],
           debug=True)
  wsgiref.handlers.CGIHandler().run(application)

if __name__ == "__main__":
  main()