When we design a PyQt5 application we see an icon on the top left corner, by default it looks like this : 
In this tutorial, we will see how to change the icon according to the user need, in order to do this we use setWindowIcon() method and to load the icon QIcon will be used which belongs to QtGui class.
Syntax : setWindowIcon(QtGui.QIcon(‘icon.png’)) Argument : It takes file name if file is in same folder else file path.
Code :Â
Python3
# importing the required librariesÂ
from PyQt5.QtWidgets import *from PyQt5 import QtCorefrom PyQt5 import QtGuiimport sysÂ
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class Window(QMainWindow):Â Â Â Â def __init__(self):Â Â Â Â Â Â Â Â super().__init__()Â
        self.setWindowIcon(QtGui.QIcon('logo.png'))        # set the title        self.setWindowTitle("Icon")Â
        # setting the geometry of window        self.setGeometry(0, 0, 400, 300)Â
        # creating a label widget        self.label = QLabel("Icon is set", self)Â
        # moving position        self.label.move(100, 100)Â
        # setting up border        self.label.setStyleSheet("border: 1px solid black;")Â
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        # show all the widgets        self.show()Â
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# create pyqt5 appApp = QApplication(sys.argv)Â
# create the instance of our Windowwindow = Window()Â
# start the appsys.exit(App.exec()) |
Output :
