A simple telegram bot that notifies whether some website is up or not. Install requests library, setup crontab and your done!

check_server.py

#!/usr/bin/python3
import requests

r = requests.get('<your website>')

if r.status_code is 200:
        r = requests.post(
                'https://api.telegram.org/bot<your telegram bot token>/sendMessage',
                data = {'chat_id':<your telegram chat id>,'text':'Good news, Status code for %s is %s' % (r.url,r.status_code),
                'disable_notification': True}
        )

else:
        r = requests.post(
                'https://api.telegram.org/bot<your telegram bot token>/sendMessage',
                data = {'chat_id':<your telegram chat id>,'text':'Bad news, Status code for %s is %s' % (r.url,r.status_code)}
        )