In Python, how to access values for first name and last name plus full name when using jinja in html?

Question

Here's what I currently have:

The values for first_name and last_name are showing as the output but not the full name.

            {% for user in users %}
            <tr>
                <td> {{user['first_name']}} </td>
                <td> {{user['last_name']}} </td>
                <td> {{user['first_name'],['last_name']}} </td>
            {% endfor %}
                
            </tr>```