How to set a variable in a template?

Question

Flask

Hello everyone
Citizens comrades, plz remind, but rather poke into the documentation line, which tells how to set template variables through jinja. I did it once, but now I forgot :(

Answer 1

jinja.pocoo.org/docs/dev/templates/#assignments
Something like this
{% set myvariable = [1,2,3,4] %}

Answer 2

solution found:
app.jinja_env.globals['UPLOAD_FOLDER'] = UPLOAD_FOLDER
app.jinja_env.globals.update()