How to perform a addition in Jinja2?

Question

I would like to add a value to a variable.

I thought of something similar:

{% set highscore = 0 %}
{% highscore = highscore+3 %}

Answer 1

What you are suggesting could be accomplished like this:

{% set highscore = 0 %}
{% set highscore = highscore + 3 %}

But be cautious about using jinja2 variable assignment... Especially as it relates to scoping