Loading QtDesigner's .ui files in PySide

Question

I am looking for a simple example of how to directly load a QtDesigner generated .ui file into a Python application.

I simply would like to avoid using pyuic4.

Answer 1

For the complete noobs at PySide and .ui files, here is a complete example:

from PySide import QtCore, QtGui, QtUiTools


def loadUiWidget(uifilename, parent=None):
    loader = QtUiTools.QUiLoader()
    uifile = QtCore.QFile(uifilename)
    uifile.open(QtCore.QFile.ReadOnly)
    ui = loader.load(uifile, parent)
    uifile.close()
    return ui


if __name__ == "__main__":
    import sys
    app = QtGui.QApplication(sys.argv)
    MainWindow = loadUiWidget(":/forms/myform.ui")
    MainWindow.show()
    sys.exit(app.exec_())

Answer 2

PySide, unlike PyQt, has implemented the QUiLoader class to directly read in .ui files. From the linked documentation,

loader = QUiLoader()
file = QFile(":/forms/myform.ui")
file.open(QFile.ReadOnly)
myWidget = loader.load(file, self)
file.close()

Answer 3

Another variant, based on a shorter load directive, found on https://askubuntu.com/questions/140740/should-i-use-pyqt-or-pyside-for-a-new-qt-project#comment248297_141641. (Basically, you can avoid all that file opening and closing.)

import sys
from PySide import QtUiTools
from PySide.QtGui import *

app = QApplication(sys.argv)
window = QtUiTools.QUiLoader().load("filename.ui")
window.show()
sys.exit(app.exec_())

Notes:

• filename.ui should be in the same folder as your .py file.
• You may want to use if __name__ == "__main__": as outlined in BarryPye's answer