PyQt5--QLineEdit

 # -*- coding:utf-8 -*-

 '''

 Created on Sep 20, 2018

 @author: SaShuangYiBing

 Comment:

 '''

 import sys

 from PyQt5.QtWidgets import QApplication,QWidget,QLabel,QLineEdit

 class New_test(QWidget):

     def __init__(self):

         super().__init__()

         self.initUI()

     def initUI(self):

         self.lbl = QLabel(self)

         qle = QLineEdit(self)

         qle.move(60,100)

         self.lbl.move(60,40)

         qle.textChanged.connect(self.onChange)

         self.setGeometry(300,300,280,170)

         self.setWindowTitle('QLineEdit')

         self.show()

     def onChange(self,text):

         self.lbl.setText(text)

         self.lbl.adjustSize()

 if __name__ == '__main__':

     app = QApplication(sys.argv)

     ex = New_test()

     sys.exit(app.exec_())