promoted widget demo

promote.py

import os
import sys
from PyQt4 import QtGui, QtCore, uic
import sip


uiFile = os.path.join(os.path.dirname(__file__), 'promote.ui')

# Load the ui file, and create my class
form_class, base_class = uic.loadUiType(uiFile)


class MyWindow(base_class, form_class):

    def __init__(self, parent=None):
        # init our ui using the MayaWindow as parent
        super(base_class, self).__init__(parent)
        # uic adds a function to our class called setupUi, calling this creates
        # all the widgets from the .ui file
        self.setupUi(self)
        self.pushButton.setText(
            'This is a really, long and poorly formatted runon sentence used to illustrate a point')
        self.pushButton.setSizePolicy(
            QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Expanding)

if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    win = MyWindow()
    win.show()
    sys.exit(app.exec_())
    sys.exit(app.exec_())