How to test for a List in Jinja2?

I did it like this:

{% if var is iterable and (var is not string and var is not mapping) %}

You can find a list of all jinja tests here.

You can easily do this whit a custom filter in jinja2.

First create you test method:

def is_list(value):
    return isinstance(value, list)

And add it as an custom filter:

j = jinja2.Jinja2(app)
j.environment.filters.update({
        'is_list': is_list,
})

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