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.
I have tried QtWidgets.QPixmap instead of QtGui.Code:
#! /usr/bin/python3 import sys from PyQt5 import QtCore, QtGui, QtWidgets from test_ui import Ui_MainWindow def __init__(self, parent=None): self.ui = Ui_MainWindow() self.ui.setupUi(self) self.ui.buttonProcessOne.clicked.connect(self.pushButtonClicked) def pushButtonClicked(self): self.ui.label.setScaledContents(True) self.ui.label.setPixmap(myPixmap) if __name__ == "__main__": mywindow = MyWindowClass() mywindow.show() sys.exit(app.exec_())