title: How to get the selectionchange event in PyQt4 for QListView
body: <p>Hi have a QListView created using QtDesigner and converted to python using pyuic4, and I imported the UI module where I am trying to connect it to events </p>
  
  <p>for the QlistView i am trying to implement selection change when user presses up and down key, I am guessing the event should be fired when selection changes but that doesn't seems to do something</p>
  
  <pre><code>self.methodListView.selectionModel.selectionChanged.connect(self.outputHelp)
  </code></pre>
  
  <p>but this gives error </p>
  
  <pre><code>AttributeError: 'builtin_function_or_method' object has no attribute 'selectionChanged'
  </code></pre>
  
  <p>Do I need to add some more information to show exactly what I am doing?</p>