Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Python Flask with SQLAlchemy Basics Creating a Basic Website with Flask Template Inheritance

Adam Fournace
Adam Fournace
4,134 Points

What is {% block link %} in jinja? I can't find any documentation on it or where it was referenced in the video.

I don't understand what the link block is or where to find information on it.

index.html
<!-- insert code here -->
{% extends "layout.html" %}

{% block link %} <a href="">Contact</a> {% endblock %}
layout.html
<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8">
        <meta name="description" content="Treehouse code chalenge practice.">
        <meta name="viewport" content="width=device-width, initial-scale=1">
    </head>
    <body>
        <h1>Practice Template Inheritance</h1>
        {% block link %}{% endblock %}
    </body>
</html>
Adam Fournace
Adam Fournace
4,134 Points

I keep getting this error:

Traceback (most recent call last): File "", line 14, in test_app_code AssertionError: Regex didn't match: '\{\%[\sextnds\\'\"layou\.hm]+\%\}' not found in '\n{% block link %}\nContact\n{% endblock %}' : Your extend should start and end with curly bracket and percent symbols: {% %}

1 Answer

Jeff Muday
MOD
Jeff Muday
Treehouse Moderator 27,574 Points

Templates can be somewhat difficult to troubleshoot. I too don't see an error with your code. Unless you somehow did not get the syntax correct in the Python app (which you did not show).

A simple three-file application works as expected-- main.py, and then in the templates directory layout.html and index.html

A bit more of your code would be helpful!

from flask import Flask, render_template
app = Flask(__name__)

@app.route('/')
def tester():
    return render_template('index.html')

app.run(debug=True)