Simple Web Browser python +GTK

import gtk, webkit

def go_but(widget):
    add = addBar.get_text()
    if add.startswith("http://"):
        web.open(add)
    else:
        add = "http://" + add
        addBar.set_text(add)
        web.open(add)

#def go_back(widget):
#    scroll.go_back()


win = gtk.Window()
win.connect('destroy', lambda w: gtk.main_quit())

box1 = gtk.VBox()
win.add(box1)

box2 = gtk.HBox()
box1.pack_start(box2, False)

addBar = gtk.Entry()
box2.pack_start(addBar)

#goback = gtk.Button("<-")
#box2.pack_start(goback, False)
#goback.connect('clicked', go_back)

gobutton = gtk.Button("GO")
box2.pack_start(gobutton, False)
gobutton.connect('clicked', go_but)


scroll = gtk.ScrolledWindow()
box1.pack_start(scroll)

web = webkit.WebView()
scroll.add(web)

win.show_all()

gtk.main()