title: PyQt4 - creating a timer
body: <p>I'm sorry for the question but I have read a bunch of things and it seems that I do not get how to make a timer. So I'm posting my code: </p>
  
  <pre><code>from PyQt4 import QtGui, QtCore
  from code.pair import Pair
  from code.breadth_first_search import breadth_first_search
  import functools
  
  
  class Ghosts(QtGui.QGraphicsPixmapItem):
  
      def __init__(self, name):
          super(Ghosts, self).__init__()
  
          self.set_image(name)
  
      def chase(self, goal):
          pos = Pair(self.x(), self.y())
          path = breadth_first_search(pos, goal)
          while not path.empty():
              aim = path.get_nowait()
              func = functools.partial(self.move_towards, aim)
              timer = QtCore.QTimer()
              QtCore.QTimer.connect(timer, QtCore.SIGNAL("timeout()"), self, QtCore.SLOT("func()"))
              timer.start(200)
  
      def move_towards(self, goal):
          self.setPos(goal.first(), goal.second())
  </code></pre>
  
  <p>I'm trying to make the object move towards its aim every 200ms.
  I tried without self it gives me the same errors:</p>
  
  <pre><code>QObject.connect(QObject, SIGNAL(), QObject, SLOT(), Qt.ConnectionType=Qt.AutoConnection): argument 3 has unexpected type 'bytes'
  QObject.connect(QObject, SIGNAL(), callable, Qt.ConnectionType=Qt.AutoConnection): argument 3 has unexpected type 'bytes'
  QObject.connect(QObject, SIGNAL(), SLOT(), Qt.ConnectionType=Qt.AutoConnection): argument 2 has unexpected type 'bytes'
  </code></pre>
  
  <p>I have no idea how to connect the timer to a function with arguments.
  I thought that I'm not using the SLOT argument right but it gave me those mystakes. I suppose that it is all wrong. I'd appreciate some help : )</p>