PyQt4 Hello World

# -*- coding: utf-8 -*-
from PyQt4 import QtGui

class HelloWorld(QtGui.QWidget):
    def __init__(self, parent=None):
        QtGui.QWidget.__init__(self, parent)
        self.parent = parent
        self.initUi()

    def initUi(self):
        self.setWindowTitle(u"Привет мир")
        self.resize(300, 200)
        self.show()

    def paintEvent(self, event):
        p = QtGui.QPainter(self)
        p.drawText(10, 20, u"Привет, мир!")

if __name__ == '__main__':
    app = QtGui.QApplication([])
    w = HelloWorld()
    app.exec_()