{% if inventory.i is iterable and (inventory.i is not string and inventory.i is not mapping) %}
    {% for inv_item in inventory.i %}
        {% include 'partials/charxml/_inv_grid.html.j2' %}
    {% endfor %}
{% else %}
    {% with inv_item=inventory.i %}
        {% include 'partials/charxml/_inv_grid.html.j2' %}
    {% endwith %}
{% endif %}