title: How to adjust space between layouts in a QVBoxLayout
body: <p>I've seen how to adjust the space between widgets in a layout:
  <a href="https://stackoverflow.com/questions/16572344/space-between-widgets-in-qvboxlayout">Space between widgets in QVBoxLayout</a>. However, I want to know how to adjust space between <em>layouts</em> added to a layout.</p>
  
  <p>For example:</p>
  
  <pre><code>layout = QVBoxLayout()
  h1_layout = QHBoxLayout()
  h2_layout = QHBoxLayout()
  layout.addLayout(h1_layout)
  layout.addLayout(h2_layout)
  </code></pre>
  
  <p>I would like the contents of <code>h1_layout</code> and <code>h2_layout</code> to be placed close to each other rather than spaced across the vertical layout.</p>