blogpostchangenotifier.py

# uses python3+

# blogpostchangenotifier currently is working for blogspot only, probably with little change will work for other blogs
# There are specific users who want oftenly to refresh one blog post with new info, where
# it seems (i think so) rss is not solution for notification
# program can be started in command line with python3 blogpostchangenotifier.py , eventually recheck what version you have on your system

# by @adam222up devoted to One rope L⚡dy daughter of Almighty

# INPUT in next line put link for concrete post
url = 'http://some-traveller-somewhere.blogspot.mk/2016/01/2016-january-march.html'
soundfile = 'phonering.wav' # <- put your preffered soundfile in same directory with script and enter it's name here, use wav file
###############

import codecs
import urllib.request
import sys
import time
import os
import tkinter
from tkinter import messagebox
import platform
if sys.platform.startswith('win'):
    import winsound
import subprocess


i = 0

time.sleep(1) 

while True:

    try:
        try:
            f = codecs.open('laststate.txt', 'r', 'utf-8')
            laststatefile = f.read()
            f.close()
        except:
            laststatefile = ''

        headers = {}
        headers['User-Agent'] = "Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.17 (KHTML, like Gecko) Chrome/24.0.1312.27 Safari/537.17"
        req = urllib.request.Request(url, headers = headers)
        resp = urllib.request.urlopen(req)
        s = str(resp.read().decode('utf-8'))

        firstbr = int(s.find("<h3 class='post-title entry-title' itemprop='name'>"))
        lastbr = int(s.find("Posted by"))

        s = s[firstbr:lastbr]
        s=re.sub('<[^>]*>', ' ', s, flags=re.UNICODE)
        s = html.unescape(s)

        
        if s != laststatefile:

            try:
                
                if sys.platform.startswith('linux'):
                    os.system("play %s" % soundfile.strip())
                    
                if sys.platform.startswith('win'):
                    winsound.PlaySound(soundfile.strip(), winsound.SND_FILENAME)

                if sys.platform.startswith('darwin'): 
                    return_code = subprocess.call(["afplay", soundfile.strip()])
                    
            except Exception as e:
                print(str(e))

            root = tkinter.Tk()
            root.withdraw()
            messagebox.showinfo("There is new message in ", url)
            root.destroy()
            
            g = codecs.open('laststate.txt', 'w', 'utf-8')
            g.write(s)
            g.close()
        
    except Exception as e:
        print(str(e))

    i += 1
    print(str(i) + ': working in background...')
    time.sleep(300) #recheck on every 5 minutes