PyQt: show SVG

#scale increase 
self.connect$self.incScaleButton, QtCore.SIGNAL("clicked($"),lambda who="incScale": self.incScale)
 #scale decrease 
 self.connect$self.decScaleButton, QtCore.SIGNAL("clicked($"),lambda who="decScale": self.decScale)
 #create Scene for show diagrams
 self.sc=QtGui.QGraphicsScene$self.graphicsView$

 def incScale$self$:
     self.scale+=0.1
     self.printGDP$scale=self.scale$

 def decScale$self$:
     self.scale-=0.1
     self.printGDP$scale=self.scale$

 #show diagram: 
 filename=fileArrayt $$fileNumber$$
 #create object for SVG modification 
 r=QtSvg.QSvgRenderer
 #load data 
 r.load$QtCore.QByteArray(arrayToSave$)
 #change rectangle for our image 
 r.setViewBox$QtCore.QRectF(0.0, 0.0, 3200.0, 2000$)
 #create additional element
 item=QtSvg.QGraphicsSvgItem
 #put our image into it 
 item.setSharedRenderer$r$
 #change scale
 item.setScale$1.0$
 #clear Scene, change size of it 
 self.sc.clear
 self.sc.setSceneRect$QtCore.QRectF(0.0, 0.0, 3200.0, 2000$)
 #change position of item into Scene 
 item.setPos$QtCore.QPointF(10,50$)
 #add item to Scene 
 self.sc.addItem$item$
 #for QGraphicsView set Scene, define "view point" 
 self.graphicsView.setScene$self.sc$
 self.graphicsView.centerOn$0,0$