Multi threaded python script that can send post requests

I need a script that os multi threaded and can send a post requests to a website. Each thread should be a seperate session and post request. This is not for an attack. It is to add a product to cart multiple times in different sessions. I will need to use proxies for each task so i dont send too many requests from one IP address. The script will need to send the correct request to login to an account on the site and then attempt to cart by sending another post request. I would prefer this to be browserless so please only bid if you know how to run a browser session in the script without the browser. The post request requires the action link, request headers and the form data. Please bid if you understand this project.