from pprint import pprint
from time import sleep
import requests


MY_TOKEN = "5190492041:AAElWfMVSHXyzqnawRcVVNZpJFxiap4U6Qg"
API_URL_TEMPLATE = "https://api.telegram.org/bot{token}/{method}"

def set_short_description(token=MY_TOKEN):
    url_to_get_updates = API_URL_TEMPLATE.format(token=token, method="getUpdates")
    url_to_send_message = API_URL_TEMPLATE.format(token=token, method="sendMessage")
    # while True:
    previous_message_id = requests.get(url_to_get_updates, data={"timeout": 5}).json()['result'][-1]['message']['message_id']
    while True:
        sleep(2)
        response = requests.get(url_to_get_updates)
        result = response.json()['result']
        last_message_id = result[-1]['message']['message_id']
        user_id = result[-1]['message']['from']['id']

        print(last_message_id, end=' ')
        print(previous_message_id)

        if last_message_id != previous_message_id:
            requests.post(url_to_send_message, data={'chat_id': user_id, 'text': 'купи слона'})
        previous_message_id = last_message_id


set_short_description()