#!/usr/bin/env python

import gobject, gtk

def hello(*args):
    print "Hello World"
    window.destroy()

window = gobject.new(gtk.Window, type=gtk.WINDOW_TOPLEVEL,
                     title='Hello World', allow_grow=gtk.FALSE,
                     allow_shrink=gtk.FALSE, border_width=10)
window.connect('destroy', lambda w: gtk.main_quit())

button = gobject.new(gtk.Button, label="Hello World", parent=window)
button.connect("clicked", hello)

window.show_all()

gtk.main()