bot.py

from bs4 import BeautifulSoup
import requests
import urllib3

def main():

    url = "https://rptechindia.in/nvidia-geforce-rtx-3070.html"
    hdr = {'User-Agent':
        ('Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.11 '
        '(KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11'),
        'Accept':
        ('text/html,application/xhtml+xml,'
        'application/xml;q=0.9,*/*;q=0.8'),
        'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.3',
        'Accept-Encoding': 'none',
        'Accept-Language': 'en-US,en;q=0.8',
        'Connection': 'keep-alive'}
    http = urllib3.PoolManager()
    response = http.request('GET', url, hdr)
    soup = BeautifulSoup(response.data, 'html.parser')
    span_text = soup.find_all('span', {'class' :'rs2'})[0].text
    if 'Out of stock' not in span_text:
        text = "In stock. BUY! BUY! BUY!"
        chat_id = YOUR_CHAT_ID
        bot_secret = YOUR_BOT_SECRET
        data = {'text': f"{text}", 'chat_id': f"{chat_id}"}
        requests.post(f"https://api.telegram.org/bot{bot_secret}/sendMessage", data = data)


if __name__ == '__main__':
    main()