title: Grabbing all QPushButton in a PyQt Python ui File
body: <p>I created a UI File using Qt Designer with lots of QPushButtons, and then I converted it into a python file using pyuic4.</p>
  
  <p>I want to add all the QPushButtons to a QButtonGroup.</p>
  
  <p>How do I iterate or grab all my QPushButtons to add in to a QButtonGroup from my UI Python file?</p>