How do I use 'is not None' in Django Templates?

The if template tag has supported the is operator since Django 1.10 (release notes).

You can now do {% if x is None %} and {% if x is not None %}.

You can use the != operator instead of not. However, things can be simplified even further to:

{% if user.is_authenticated and firstname_of_logged_user %}

The above will check whether or not firstname_of_logged_user is truthy in your template.

python django django-templates

The is operator is not supported. Just use {% if var != None %}. This is not exactly the same but it will be sufficient for most cases.

If you actually want to use the is operator, you would have to implement it as a custom template tag.

For instance:

@register.filter(name='is')def do_is(lhs, rhs):    return lhs is rhs

Thus you will be able to use it as:

{% if var1|is:var2 or not var3|is:var4 %}    ...{% else %}    ...{% endif %}

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