title: Sending a form array to Flask
body: <p>I have an HTML form with multiple inputs named like this:</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;input name="hello[]" type="text" /&gt;
  &lt;input name="hello[]" type="text" /&gt;
  &lt;input name="hello[]" type="text" /&gt;
  </code></pre>
  
  <p>In <strong>PHP</strong> you get this as an array but is it the same way in Python, using Flask?</p>
  
  <p>I have tried this:</p>
  
  <pre><code>hello = request.form['hello']
  
  print(hello)
  </code></pre>
  
  <p>But that did not work, I got a <code>400 Bad Request</code>:</p>
  
  <pre class="lang-none prettyprint-override"><code>Bad Request
  
  The browser (or proxy) sent a request that this server could not understand.
  </code></pre>
  
  <p>How do I do it in Flask?</p>