Eu desenvolvi o mesmo aplicativo "mybrowser" contado por Jono Bacon em seu tutorial . Mas quando eu quero ver sobre isso está jogando o seguinte erro:
Gtk.Window.__init__(self, type=type, **kwds)
/usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:391: Warning: g_object_set_property: construct property "type" for object 'AboutDialog' can't be set after construction
Gtk.Window.__init__(self, type=type, **kwds)
Traceback (most recent call last):
File "/home/navneet/Apps/Ubuntu apps/mybrowser/mybrowser_lib/Window.py", line 85, in on_mnu_about_activate
about = self.AboutDialog() # pylint: disable=E1102
File "/home/navneet/Apps/Ubuntu apps/mybrowser/mybrowser_lib/AboutDialog.py", line 21, in __new__
new_object.finish_initializing(builder)
AttributeError: 'NoneType' object has no attribute 'finish_initializing'