Why is an array returned in flask sqlalchemy?

Question

Flask

Here is the request.

user_id = L.query.with_entities(L.user_id).filter(L.identity == j['identity'], L.provider == j['provider']).first()

Actually, I only request user_id using query.with_entities.
I even add first() at the end.

And this is what I get:
(2,)

Why (2,) instead of just 2?
And how to get just 2?

Answer 1

Then do it like this:
For example:
or immediately:

user_id = L.query.with_entities(L.user_id).filter(L.identity == j['identity'], L.provider == j['provider']).first()[0]

Answer 2

https://jsfiddle.net/3t833vy7/