Show dialog window

Question

Can anyone tell me why this code is not working? The Test4 class is my converted simple UI:

import sys
import Test4
from PyQt4 import QtGui, QtCore

class UiViewer(QtGui.QApplication, Test4.Ui_Dialog):

    def __init__(self, parent=None):
        return super(UiViewer, self).__init__(parent)
        self.setupUi(self)

    def main(self):
        self.show()

if __name__ == '__main__':

    app = QtGui.QApplication(sys.argv)

    uiViewer = UiViewer()
    uiViewer.main()
    app.exec_()

Answer 1

first of all you need to use

if __name__ == '__main__'

not

if name == 'main':

and also adding the Error Message and describing the behavior of the application when you run it will help trace the problem. from your question, it can be any number of problems.

Answer 2

Your UiViewer class needs to inherit from the same class as the top-level widget in Qt Designer (presumably QDialog, in your case, but it could also be a QMainWindow or a QWidget):

class UiViewer(QtGui.QDialog, Test4.Ui_Dialog):
    def __init__(self, parent=None):
        super(UiViewer, self).__init__(parent)
        self.setupUi(self)

And note that you must not put return before the super call, otherwise the __init__ function will exit at that point, meaning the rest of its code won't be executed (in particular, setupUi would not be called).