How to run code written for PyQt4 in PyQt5

john_hobbyist

PyQt4 does not exist any more in Ubuntu 20.04. How can I run these examples: https://www.tutorialspoint.com/pyqt/pyqt_quick_guide.htm with PyQt5??

SGaist

Hi,

Change PyQt4 for PyQt5 and move all widgets related import to QtWidgets in place of QtGui.

john_hobbyist

In order to help me understand...what should I do in this example?

import sys
from PyQt4.QtGui import *
from PyQt4.QtCore import *

def window():
   app = QApplication(sys.argv)
   w = QWidget()
   b = QPushButton(w)
   b.setText("Hello World!")
   b.move(50,50)
   b.clicked.connect(showdialog)
   w.setWindowTitle("PyQt Dialog demo")
   w.show()
   sys.exit(app.exec_())
	
def showdialog():
   d = QDialog()
   b1 = QPushButton("ok",d)
   b1.move(50,50)
   d.setWindowTitle("Dialog")
   d.setWindowModality(Qt.ApplicationModal)
   d.exec_()
	
if __name__ == '__main__':
   window()

SGaist

Exactly what I said:

replace PyQt4 with PyQt5
since all the classes are from the widgets module replace QtGui with QtWidgets

In addition: stop using star imports, it's bad habit and import stuff you do not use.

john_hobbyist

@SGaist

You are AMAZING!!! Thanx a lot!!!

SGaist

You're welcome

Since you have it working now, please mark the thread as solved using the "Topic Tool" button so that other forum users may know a solution has been found.

john_hobbyist

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