我已经在这个错误上停留了很长时间了。我是Jinja2和Flask的新手，但是我尝试过弄乱我的for循环并编辑我的内容main.py无济于事。这是到目前为止我得到的。

首先，我的 main.py

# Data Science Notes Route
@app.route('/data-science/<content>')
def note(content):   
    return render_template('notes.html', content=content)

接下来，导致错误的模板部分。

{% for link in category_files %}

    <h2 class="file-title"><a href="{{ url_for('note', content=get_note_content(link)) }}"
            class="file-link">{{ note_dict[link].title }}</a></h2>

    <!-- Display a description of the file -->
    <p class="file-description">{{ note_dict[link].description }}</p>

    <!-- Display the topics covered -->
    <p class="file-topics">Topics covered: {{ note_dict[link].topics }}</p>

    <!-- Display an image -->
    <img src="{{ note_dict[link].image }}" alt="">

    {% endfor %}```

The issue is that very first part with the `a` tag.  According to the error message, I am missing the **content** argument.  But it looks to me like I'm not!  Here's the error output, as well as the `dump()` output. 

[![Image of Error][1]][1]

Any aid would be greatly appreciated!  Thanks!


  [1]: https://i.stack.imgur.com/iyqN0.png