Something

import gtkimport sysw  = gtk.Window()b1 = gtk.Button("Button 1")b2 = gtk.Button("Click Me")v  = gtk.VBox()v.pack_start(b1)v.pack_start(b2)w.add(v)b1.connect("clicked", lambda b: sys.stdout.write("hello world\n"))b1.connect("clicked", lambda b: sys.stdout.write("I was clicked\n"))b2.connect("clicked", lambda b: gtk.main_quit())w.show_all()gtk.main()