Jinja syntax to add a new property to sort a list by

view.html

{% set updated_users = [] %}
{% for user in all_users %}
    {% set names = user.full_name.split() %}
    {% set first_name = names[0] %}
    {% set last_name = names[1:] | join(' ') %}
    {% set updated_user = user.copy() %}
    {% set _ = updated_user.update({'first_name': first_name, 'last_name': last_name}) %}
    {% set _ = updated_users.append(updated_user) %}
{% endfor %}

{% set sorted_users = updated_users | sort(attribute='last_name') %}

{% for user in sorted_users %}
    {{ user.first_name }} {{ user.last_name }}
{% endfor %}