webview.py

#!/usr/bin/env python
import sys
import gtk
from gtk import gdk
import webkit
import gobject

page_url = len(sys.argv)>1 and sys.argv[1] or 'http://www.google.com'
gobject.threads_init()
win = gtk.Window()
web_view = webkit.WebView()
web_view.open(page_url)
win.connect('destroy', lambda w: gtk.main_quit())
web_view.connect("key-release-event",lambda w,ev: gdk.keyval_name(ev.keyval) == 'Escape' and gtk.main_quit() or None)
win.add(web_view)
win.show_all()

gtk.main()