#!/usr/bin/python

# -*- coding: utf-8 -*-

# sender.py

import sys

from PyQt4 import QtGui, QtCore

class Example(QtGui.QMainWindow):

    def __init__(self):

        super(Example, self).__init__()

        self.initUI()

    def initUI(self):

        button1 = QtGui.QPushButton("Button 1", self)

        button1.move(30, 50)

        button2 = QtGui.QPushButton("Button 2", self)

        button2.move(150, 50)

        self.connect(button1, QtCore.SIGNAL(‘clicked()‘),

            self.buttonClicked)

        self.connect(button2, QtCore.SIGNAL(‘clicked()‘),

            self.buttonClicked)

        self.statusBar().showMessage(‘Ready‘)

        self.setWindowTitle(‘Event sender‘)

        self.resize(290, 150)

    def buttonClicked(self):

        sender = self.sender()#http://www.cppblog.com/mirguest/archive/2012/02/05/164984.html::sender 是发送信号的对象。 receiver 是接受信号的对象。而 slot 是回馈信号的方法。

        self.statusBar().showMessage(sender.text() + ‘ was pressed‘)

app = QtGui.QApplication(sys.argv)

ex = Example()

ex.show()

sys.exit(app.exec_())

 如图:

pyqt sender()学习