import sys
from PyQt4 import QtGui
def window():
app = QtGui.QApplication(sys.argv)
w = QtGui.QWidget()
b = QtGui.QLabel(w)
b.setText("<h1>Welcome to PyQt4 SO Documentation!</h1>")
w.setGeometry(100,100,550,65)
b.move(50,20)
w.setWindowTitle(&quo...
