Browser en pygtk con webkit en unas cuantas lineas de codigo

import sys
import gtk
# https://bugs.launchpad.net/bugs/480398
gtk.gdk.threads_init()
import webkit

class Browser(gtk.Window):
    def __init__(self, url=''):
        gtk.Window.__init__(self)
        self.set_title('Browser')
        self.set_default_size(640, 480)

        self.url = url

        scroll = gtk.ScrolledWindow()
        scroll.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        scroll.set_shadow_type(gtk.SHADOW_IN)

        self.view = webkit.WebView()
        scroll.add(self.view)

        vbox = gtk.VBox()

        entry = gtk.Entry()
        entry.connect('activate', self._on_url_changed)

        if self.url:
            entry.set_text(self.url)
            entry.activate()

        vbox.pack_start(entry, False)
        vbox.pack_start(scroll, True, True)
        vbox.show_all()

        self.add(vbox)

        self.connect('delete-event', lambda *args: sys.exit(0))

    def _on_url_changed(self, entry):
        '''called when the url changes'''
        self.url = entry.get_text()

        if not self.url.startswith('http://') and not self.url.startswith('https://'):
            self.url = 'http://' + self.url

        self.view.open(self.url)

if __name__ == '__main__':
    browser = Browser('www.google.com')
    browser.show()
    gtk.main()