# codes_8.py

def init_GUI(self):

self.label1 = QtGui.QLabel('Text:', self)

self.label1.move(10, 15)

self.label2 = QtGui.QLabel('Write your answer here:', self)

self.label2.move(10, 50)

self.label3 = QtGui.QLabel('Signal origin:', self)

self.label3.move(10, 250)

self.edit1 = QtGui.QLineEdit('', self)

self.edit1.setGeometry(45, 15, 100, 20)

self.button1 = QtGui.QPushButton('&Process', self)

self.button1.resize(self.button1.sizeHint())

self.button1.move(5, 70)

self.button1.clicked.connect(self.button1_callback)

self.button1.clicked.connect(self.button_pressed)

self.button2 = QtGui.QPushButton('&Exit', self)

self.button2.clicked.connect(QtCore.QCoreApplication.instance().quit)

self.button2.resize(self.button2.sizeHint())

self.button2.move(90, 70)

self.setGeometry(200, 100, 300, 300)

self.setWindowTitle('Window with buttons.')

self.show()

def button_pressed(self):

# This method registers the object sending the signal and shows it in

# label3 by using the sender() method

sender = self.sender()

self.label3.setText('Signal origin: {0}'.format(sender.text()))

self.label3.resize(self.label3.sizeHint())

def button1_callback(self):

self.label2.setText(self.edit1.text())