title: Flask render_template not working to show a referenced template
body: <p>I'm new to python and Flask, and I'm trying to setup a basic page to render an HTML template. I followed the instructions/tutorials and I'm able to render HTML via the use of render_template like so:</p>
  <pre><code>app = Flask(__name__)
  
  @app.route('/')
  def index():
    return render_template(
      'index.html',
    )
  </code></pre>
  <p>I'm trying to now run a sample app, where the index.html in the app has actually a reference to another .html page, like so:</p>
  <pre><code>../../html/index.html
  </code></pre>
  <p>When I load this, I just see this text - literally. I assume it's trying to load the index.html from referenced folder (which I verified exists).</p>
  <p>What is missing here? Am I missing a module or something?</p>
  <p><strong>EDIT:</strong></p>
  <p>This is where the main .py script is that I am running.</p>
  <p><a href="https://i.stack.imgur.com/3wBWb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/3wBWb.png" alt="enter image description here" /></a></p>
  <p>the <code>index.html</code> is in the <code>templates</code> directory. And then two folders up is the <code>html</code> folder that it seems to be referencing:</p>
  <p><a href="https://i.stack.imgur.com/TtCxs.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TtCxs.png" alt="enter image description here" /></a></p>
  <p>I know based on this, it should be &quot;<code>../html/index.html</code>&quot;, but I've tried that, too and that doesn't work either.</p>