test.py

test.py

import sys
from PyQt4 import QtCore, QtGui
from PyQt4.QtGui import QPixmap

class GraphWidget(QtGui.QGraphicsView):
    def __init__(self, mainwindow, *args, **kwargs):
        super(GraphWidget, self).__init__(*args, **kwargs)
        self.scene = QtGui.QGraphicsScene()
        self.setScene(self.scene)

class awindow(QtGui.QMainWindow):
    def __init__(self):
        super(self.__class__, self).__init__()
        self.piccanvas = GraphWidget(self)
        self.setCentralWidget(self.piccanvas)

app = None

def main():
    global app
    app = QtGui.QApplication(sys.argv)
    window = awindow()
    window.show()
    app.exec_()
if __name__ == "__main__":
    main()