title: Passing arguments through QtGui.QAction to the triggered method
body: <p>Let's say I have a method like:</p>
  
  <pre><code>def open(self, opt):
      if opt == True:
      ...
      if opt == False:
      ...
  </code></pre>
  
  <p>how do I pass the argument to it with <em>QtGui.QAction</em> like:</p>
  
  <pre><code>self.openAct = QtGui.QAction("O&amp;pen", self, shortcut="Ctrl+O",
              statusTip="Opens a location", triggered=self.open)
  </code></pre>