PyQt5 QPixmap

[ChrisOfBristol]

I've just converted a small app from Python2/Qt4 to Python3/Qt5 without much difficulty. It displays .jpg images, but it no longer displays .tif images.

#! /usr/bin/python3                                 
 
import sys
from PyQt5 import QtCore, QtGui, QtWidgets          
from test_ui import Ui_MainWindow
 
class MyWindowClass(QtWidgets.QMainWindow):             
    def __init__(self, parent=None):
        QtWidgets.QMainWindow.__init__(self, parent)   
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)
 
        self.ui.buttonProcessOne.clicked.connect(self.pushButtonClicked)
 
    def pushButtonClicked(self):
        myPixmap = QtGui.QPixmap('image1.tif')
        self.ui.label.setScaledContents(True)
        self.ui.label.setPixmap(myPixmap)   
 
 
if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)          
    mywindow = MyWindowClass()
    mywindow.show()
    sys.exit(app.exec_())

#! /usr/bin/python3                                 
 
import sys
from PyQt5 import QtCore, QtGui, QtWidgets          
from test_ui import Ui_MainWindow
 
class MyWindowClass(QtWidgets.QMainWindow):             
    def __init__(self, parent=None):
        QtWidgets.QMainWindow.__init__(self, parent)   
        self.ui = Ui_MainWindow()
        self.ui.setupUi(self)

        self.ui.buttonProcessOne.clicked.connect(self.pushButtonClicked)

    def pushButtonClicked(self):
        myPixmap = QtGui.QPixmap('image1.tif')
        self.ui.label.setScaledContents(True)
        self.ui.label.setPixmap(myPixmap)   
        
 
if __name__ == "__main__":
    app = QtWidgets.QApplication(sys.argv)          
    mywindow = MyWindowClass()
    mywindow.show()
    sys.exit(app.exec_())

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I have tried QtWidgets.QPixmap instead of QtGui.