show SVG via QGraphicsView

in class QMainWindow we create QGraphicsScene on object myGraphicsView:

self.sc=QtGui.QGraphicsScene$self.myGraphicsView$

In function for show SVG, we write:

r=QtSvg.QSvgRenderer
r.load$QtCore.QByteArray(mySVG$)
r.setViewBox$QtCore.QRectF(0.0, 0.0, 3500.0, 3500.0$)
item=QtSvg.QGraphicsSvgItem
item.setSharedRenderer$r$
item.setScale$20.0$
self.sc.clear
self.sc.setSceneRect$QtCore.QRectF(0.0, 0.0, 2000.0, 1000.0$)
item.setPos$QtCore.QPointF(10,50$)
self.sc.addItem$item$
self.graphicsView.setScene$self.sc$
self.graphicsView.centerOn$0,0$

mySVG - source of the SVG-file $as text$

Picture size is 3500 by 3500 pixels.