python中使用pyqt做GUI小试牛刀

import sys

from PyQt4 import QtGui , QtCore

class LIN(QtGui.QMainWindow):

    def _init_(self):

        QtGui.QMainWindoW._init_(self)

        self.setWindowTitle('lin')

        self.resize(300,300)

app=QtGui.QApplication(sys.argv)

mywindow=LIN()

mywindow.show()

app.exec_()