title: How can I get the height of a QListWidgetItem in a QListWidget in PyQt?
body: <p>Actually, how can I extract size of gui elements in general in PyQt?</p>
  
  <p>So far I have only found <code>sizeHint</code> mentioning anything regarding sizes in PyQt.</p>
  
  <p>Could anyone please explain how sizes works in PyQt?</p>