title: How do I Filter the PyQt QCombobox Items based on the text input?
body: <p>I need a QCombox which Items are filtered based on the text input. If I set the QCombobox editable, the user can insert text and the QCompleter is automatically created. But the items are not filtered and I don’t want the user to add new Items.</p>
  
  <p>Is there any possibility to add this functionality to the QCombobox?</p>