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PyQt5 – How to change text of pre-existing label | setText method
  • Last Updated : 26 Mar, 2020

In GUI applications there is need of displaying information this done using labels in PyQt5, but sometimes there is also a need of changing the text of the label, in this tutorial we will see how it can be done.

setText() method is used to change the content of the label.

Syntax : label.setText(Info)

Argument : It takes string as an argument.

Code :



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# importing the required libraries
  
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore
from PyQt5.QtGui import * 
import sys
  
class Window(QMainWindow):
    def __init__(self):
        super().__init__()
  
        # informations
        info = "info"
        new_info = "new info "
  
        # set the title
        self.setWindowTitle("Label")
  
        # setting  the geometry of window
        self.setGeometry(0, 0, 400, 300)
  
        # creating a label widget
        self.label_1 = QLabel(info, self)
  
        # moving position
        self.label_1.move(100, 100)
  
        # setting up border
        self.label_1.setStyleSheet("border: 1px solid black;")
  
        # creating a label widget
        self.label_2 = QLabel(info, self)
  
        # moving position
        self.label_2.move(100, 150)
  
        # setting up border
        self.label_2.setStyleSheet("border: 1px solid black;")
  
        # changing the text of label
        self.label_2.setText(new_info)
  
        # show all the widgets
        self.show()
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

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Output :
pyqt-setText

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