PyQt5--StatusBar

 # -*- coding:utf-8 -*-
 '''
 Created on Sep 13, 2018

 @author: SaShuangYiBing
 '''
 import sys
 from PyQt5.QtWidgets import QApplication,QWidget,QMainWindow

 class New_test(QMainWindow):
     def __init__(self):
         super().__init__()
         self.initUI()

     def initUI(self):
         self.statusBar().showMessage('Ready')
         self.setGeometry(300,300,250,150)
         self.setWindowTitle('StatusBar')
         self.show()

 if __name__ == "__main__":
     app = QApplication(sys.argv)
     ex = New_test()
     sys.exit(app.exec_())