1 # -*- coding:utf-8 -*- 2 ''' 3 Created on Sep 14, 2018 4  5 @author: SaShuangYiBing 6  7 Comment: This example is show which sender was triggered. 8 创建了两个按钮。在buttonClicked()方法中通过调用sender()方法来判断当前按下的是哪个按钮 9 '''10 import sys11 from PyQt5.QtWidgets import QApplication,QMainWindow,QPushButton12 13 class New_test(QMainWindow):14     def __init__(self):15         super().__init__()16         self.initUI()17         18     def initUI(self):19         btn1 = QPushButton('Button1',self)20         btn1.move(30,50)21         btn2 = QPushButton('Button2',self)22         btn2.move(150,50)23         24         btn1.clicked.connect(self.buttonClicked)25         btn2.clicked.connect(self.buttonClicked)26         27         self.statusBar()28         29         self.setGeometry(300,300,290,150)30         self.setWindowTitle('Event Sender')31         self.show()32         33     def buttonClicked(self):34         sender = self.sender()35         self.statusBar().showMessage(sender.text() + ' was pressed')  # 通过调用sender()方法来判断信号源， 并将其名称显示在窗体的状态栏中36         37 if __name__ == '__main__':38     app = QApplication(sys.argv)39     ex = New_test()40     sys.exit(app.exec_())

 

按下 button1时在status bar的提示语：

 

按下 button2时在 status bar的提示语：