[Python] How to conditionally modify the <title> tag in Django templates?

I have a base template (main.html) with the following code for the tag:

main.html:

<title>{% block title %}{% endblock %} | Application</title>


In a child template (dashboard.html), I override the title block like this:

dashboard.html:

{% extends 'main.html' %}
{% block title %}Dashboard{% endblock %}


If the title block is not overridden in the child template, I want the title to just be Application, without the extra | Application. How can I check if the block is overridden and modify the title accordingly?

When I pass the title block from the child template like this:

{% extends 'main.html' %}
{% block title %}Dashboard{% endblock %}


Then I need the title to display as "Dashboard | Application".

If I don't pass the title block:

{% extends 'main.html' %}


Then the title should just be "Application".

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