This is a simple little python script to send a text message when an item you are looking for comes back into stock.
Install with pip install bs4
Install with pip install twilio
You will need an account ID and token to make a call their api with your own account. You can sign up here.
This script is designed to be run on a cron job as often as you want. In my case I did every 5min.
There are a few variables that will need to be changed to fit your situation. You can find them in the main.py wrapped in <>
When it comes to selecting the element you are checking please refer to their documentation here. The expression will differ on every site.