Zamykacz

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
import os
import subprocess
from PyQt4 import QtGui
from PyQt4 import QtCore
from subprocess import call
cmd0 = 'sudo shutdown -h now'
cmd1 = 'sudo shutdown -r now'
cmd2 = 'sudo pm-suspend'
cmd3 = 'sudo pm-hibernate'

class Example(QtGui.QWidget):

    def __init__(self):
        super(Example, self).__init__()

        self.initUI()

    def initUI(self):


        btn = QtGui.QPushButton('Zamknij system', self)
        btn.resize(180, 40)
        btn.move(20, 35)
        btn.clicked.connect(lambda: os.system(cmd0))
        btn.clicked.connect(self.close)

        btn = QtGui.QPushButton('Uruchom ponownie', self)
        btn.resize(180, 40)
        btn.move(20, 80)
        btn.clicked.connect(lambda: os.system(cmd1))
        btn.clicked.connect(self.close)

        btn = QtGui.QPushButton('Wstrzymaj', self)
        btn.resize(180, 40)
        btn.move(20, 125)
        btn.clicked.connect(lambda: os.system(cmd2))
        btn.clicked.connect(self.close)

        btn = QtGui.QPushButton('Zahibernuj', self)
        btn.resize(180, 40)
        btn.move(20, 170)
        btn.clicked.connect(lambda: os.system(cmd3))
        btn.clicked.connect(self.close)

        qbtn = QtGui.QPushButton('Anuluj', self)
        qbtn.clicked.connect(QtCore.QCoreApplication.instance().quit)
        qbtn.resize(180, 40)
        qbtn.move(20, 260)

        self.setGeometry(100, 100, 225, 360)
        self.setWindowTitle('Zamknij')
        self.show()

    def keyPressEvent(self, e):

        if e.key() == QtCore.Qt.Key_Escape:
            self.close()

def main():

    app = QtGui.QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())


if __name__ == '__main__':
    main()