TelegramPythonHerokuBot++++.py

import requests  
import datetime
 
class BotHandler:
 
    def __init__(self, token):
        self.token = token
        self.api_url = "https://api.telegram.org/bot{}/".format(token)
 
    def get_updates(self, offset=None, timeout=30):
        method = 'getUpdates'
        params = {'timeout': timeout, 'offset': offset}
        print("2.5")
        print(self.api_url)
        resp = requests.get(self.api_url + method, params)
        print(resp)
        print("3")
        result_json = resp.json()['result']
        print("4")
        return result_json
 
    def send_message(self, chat_id, text):
        params = {'chat_id': chat_id, 'text': text}
        method = 'sendMessage'
        resp = requests.post(self.api_url + method, params)
        return resp
 
    def get_last_update(self):
        get_result = self.get_updates()
 
        if len(get_result) > 0:
            last_update = get_result[-1]
        else:
            last_update = get_result[len(get_result)]
 
        return last_update

token = "423331321:AAER8TvhBHZQeEZRcsx6ZbsUAeL4X3vD4F8"
greet_bot = BotHandler(token)  
greetings = ('zdravstvui', 'privet', 'qu', 'zdorovo')  
now = datetime.datetime.now()
print(now)
 
 
def main():  
    new_offset = None
    today = now.day
    hour = now.hour
 
    while True:
    	print("1")
        greet_bot.get_updates(new_offset)
        print("2")
 
        last_update = greet_bot.get_last_update()
 
        last_update_id = last_update['update_id']
        last_chat_text = last_update['message']['text']
        last_chat_id = last_update['message']['chat']['id']
        last_chat_name = last_update['message']['chat']['first_name']
 
        if last_chat_text.lower() in greetings and today == now.day and 6 <= hour < 12:
            greet_bot.send_message(last_chat_id, 'Dobroye utro, {}'.format(last_chat_name))
            today += 1
 
        elif last_chat_text.lower() in greetings and today == now.day and 12 <= hour < 17:
            greet_bot.send_message(last_chat_id, 'Dobriy den\', {}'.format(last_chat_name))
            today += 1
 
        elif last_chat_text.lower() in greetings and today == now.day and 17 <= hour < 23:
            greet_bot.send_message(last_chat_id, 'Dobriy vecher, {}'.format(last_chat_name))
            today += 1
 
        new_offset = last_update_id + 1
 
if __name__ == '__main__':  
    try:
        main()
    except KeyboardInterrupt:
        exit()