animate_fade.py

from PyQt4 import QtCore,QtGui

import sys

class AnimatedWindow(QtGui.QWidget):
	"""docstring for AnimatedWindow"""
	def __init__(self, parent = None):
		super(AnimatedWindow, self).__init__(parent)
		animation = QtCore.QPropertyAnimation(self, "windowOpacity")
		animation.setDuration(1000);
		animation.setStartValue(0.0);
		animation.setEndValue(1.0);
		animation.setEasingCurve(QtCore.QEasingCurve.OutCubic)
		QtCore.QTimer.singleShot(10000, animation, QtCore.SLOT("start()"))
		QtCore.QObject.connect(animation,QtCore.SIGNAL("finished()"),animation, QtCore.SLOT("deleteLater()"))


if __name__ == "__main__":
	application = QtGui.QApplication(sys.argv)
	main = AnimatedWindow()
	main.show()
	sys.exit(application.exec_())