How to determine which device is making a request to django?

Question

Django

Good evening! Look, there is code of the following character
The URL is directed to a django service that renders and serves the js file.
Actually, the problem is the following: for desktop platforms (PCs) you need to generate one script, and for PDAs (smartphones, tablets) you need to generate another script and give another code. How to determine from which device a request is made in django ??? Found a couple of guides. The article from habr did not help in any way from mail which

Answer 1

1) You can try to determine based on request.META. This is a probabilistic method, there is no 100% method!
2) The backend should not take care of the platform and give different content.

Answer 2

It's better not to do this - a PC can have a 1024 screen, and a tablet 4k
Focus on the screen and user behavior, and not on its type of electronics