Problema codice plugin

#!python
from PyQt4.QtCore import *
from PyQt4.QtGui import *
from qgis.core import *
# initialize Qt resources from file resouces.py
import resources
class TestPlugin:
 def __init__(self, iface):

   # save reference to the QGIS interface
   self.iface = iface
 def initGui(self):
   # create action that will start plugin configuration
   self.action = QAction(QIcon(":/plugins/testplug/icon.png"), "Test plugin", self.iface.mainWindow())

   self.action.setWhatsThis("Configuration for test plugin")
   self.action.setStatusTip("This is status tip")
   QObject.connect(self.action, SIGNAL("triggered()"), self.run)
   # add toolbar button and menu item

   self.iface.addToolBarIcon(self.action)
   self.iface.addPluginToMenu("&Test plugins", self.action)
   # connect to signal renderComplete which is emitted when canvas rendering is done
   QObject.connect(self.iface.mapCanvas(), SIGNAL("renderComplete(QPainter *)"), self.renderTest)

 def unload(self):
   # remove the plugin menu item and icon
   self.iface.removePluginMenu("&Test plugins",self.action)
   self.iface.removeToolBarIcon(self.action)
   # disconnect form signal of the canvas

   QObject.disconnect(self.iface.MapCanvas(), SIGNAL("renderComplete(QPainter *)"), self.renderTest)
 def run(self):
   # create and show a configuration dialog or something similar
   print "TestPlugin: run called!"

 def renderTest(self, painter):
   # use painter for drawing to map canvas
   print "TestPlugin: renderTest called!"