title: Passing Arguments with Newstyle signals in PyQT
body: <p>I've been having some trouble with a set of dynamically created buttons in PyQT. </p>
  
  <p>I'm using a list to create buttons corresponding to different values. Because each button is different, I need to have them pass an argument to the "Button Clicked" function identifying themselves separately so I can perform different actions with them. Here is what I have so far:</p>
  
  <pre><code>for x in self.buttons:
      name = str(x)
      button = QtGui.QPushButton(Frame)
      button.setText(name)
      cp_result = self.changeProject(name)
      if cp_result is None:
          print 'changeProject(%s) is None!', name
      else:
          print 'changeProject(%s) is OK (%r)', name, cp_result
          #button.clicked.connect(cp_result)
      setattr(self, "btn_%s" % name, button)
      self.btnList.append(button)
  
  def changeProject(self, name):
      for x in self.btnList:
          if x.isDown:
              #Change UI Frame to blahblah
      return 'A String'
  </code></pre>
  
  <p>Working with Alex, this is the latest code, testing a return value on changeProject, which clearly cannot be a string, but I still need to determine which button is pressed between the auto-generated buttons.</p>
  
  <p>Current error: <code>TypeError: connect() slot argument should be a callable or a signal, not 'str'</code></p>