How to get multiple selected items from Form in Flask
<p>With the <code>&lt;form&gt;</code> having two list items selected "Category 01" and "Category 03":</p>

<pre><code>&lt;form&gt; 
    &lt;div class="form-group"&gt;
      &lt;div&gt;
        &lt;select name='category' multiple class="form-control"&gt;
            &lt;option&gt; Category 01 &lt;/option&gt;
            &lt;option&gt; Category 01 &lt;/option&gt;
            &lt;option&gt; Category 01 &lt;/option&gt;
        &lt;/select&gt;
      &lt;/div&gt;
    &lt;/div&gt;
&lt;/form&gt; 
</code></pre>

<p><a href="https://i.stack.imgur.com/yfeWU.png" rel="noreferrer"><img src="https://i.stack.imgur.com/yfeWU.png" alt="enter image description here"></a></p>

<pre><code>if request.method == 'POST':
    as_dict = request.form.to_dict()
    print request
</code></pre>

<p>Which prints this output showing it only gets a single "Category 03".</p>

<pre><code>{'category': u'Category 01'}
</code></pre>

<p>How to make sure all the selected Categories are listed and not just one?</p>