monitor_webpage.py

import urllib.request
import ctypes
import time
from datetime import datetime

page_name = "my page"   #change to what you want your message to display
page_url = "https://www.google.com"  #change to your website...

start_time = datetime.now();
failure_count = 0
sleep_interval = 60

while True:
   code = 0
   
   try:
      code = urllib.request.urlopen(page_url).getcode()
   except:
      code = 300
      print("request to " + page_name + " failed")
   now = datetime.now()
   current_time = now.strftime('%H:%M:%S')
   if(code != 200):
      failure_count += 1
      print(page_name + " is down...failure count: " + str(failure_count) + " at " + current_time)
      if(failure_count % 10 == 0):
         ctypes.windll.user32.MessageBoxW(0, page_name + " is down as of " + current_time , page_name + " is down", 1)
   
   else:
      
      if(failure_count > 0):
         failure_count = 0
         start_time = datetime.now()
         print(page_name + " is backup and  AOK at " + current_time)
      else:
         print(page_name + " is AOK at " + current_time)
      alive_time = now- start_time
      print("Alive for " + str(alive_time));
   time.sleep(sleep_interval)