def show_edit_tracker_dialog(list):
                print list
                textbuffer = gtk.TextBuffer(table=None)
                textbuffer.set_text("list")
                edit_glade = gtk.glade.XML(common.get_glade_file("edit_list.glade"))
                edit_list  = edit_glade.get_widget("editlist")
                edit_list.set_buffer(textbuffer)
                edit_list.show_all()
    

    edit_list.set_buffer(textbuffer)
AttributeError: 'gtk.Window' object has no attribute 'set_buffer'