PyQt5--QLineEdit

 1 # -*- coding:utf-8 -*-
 2 '''
 3 Created on Sep 20, 2018
 4 
 5 @author: SaShuangYiBing
 6 
 7 Comment: 
 8 '''
 9 import sys
10 from PyQt5.QtWidgets import QApplication,QWidget,QLabel,QLineEdit
11 
12 class New_test(QWidget):
13     def __init__(self):
14         super().__init__()
15         self.initUI()
16     
17     def initUI(self):
18         self.lbl = QLabel(self)
19         qle = QLineEdit(self)
20         qle.move(60,100)
21         self.lbl.move(60,40)
22         
23         qle.textChanged.connect(self.onChange)
24         
25         self.setGeometry(300,300,280,170)
26         self.setWindowTitle('QLineEdit')
27         self.show()
28         
29     def onChange(self,text):
30         self.lbl.setText(text)
31         self.lbl.adjustSize()
32         
33 if __name__ == '__main__':
34     app = QApplication(sys.argv)
35     ex = New_test()
36     sys.exit(app.exec_())