faradars.py

import requests  
import datetime

class BotHandler:

def __init__(self, token):
        self.token = '1750099223:AAFWvjbAyPghnOsltL1zd26L1gW22f0q2yw'
        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}
        resp = requests.get(self.api_url + method, params)
        result_json = resp.json()['result']
        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

greet_bot = BotHandler(token)  
greetings = ('hello', 'hi', 'greetings', 'sup')  
now = datetime.datetime.now()

def main():  
    new_offset = None
    today = now.day
    hour = now.hour

while True:
        greet_bot.get_updates(new_offset)

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, 'Good Morning  {}'.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, 'Good Afternoon {}'.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, 'Good Evening  {}'.format(last_chat_name))
            today += 1

new_offset = last_update_id + 1

if __name__ == '__main__':  
    try:
        main()
    except KeyboardInterrupt:
        exit()