How to get user data by id Django 1.9?

Question

Django

Novice programmer. I ran into a problem, there is a user id and you need to find out the rest of his data from it, how can this be done?
using sqlite

Answer 1

User.objects.get(pk=you_know_it)
So what?

Answer 2

https://docs.djangoproject.com/ja/1.9/topics/auth/...