'add_buttons(*args)
The add_buttons() method adds several buttons to the Gtk.Dialog using
the button data passed as arguments to the method. This method is the
same as calling the Gtk.Dialog.add_button() repeatedly. The button data
pairs - button text (or stock ID) and a response ID integer are passed
individually. For example:
.. code-block:: python
dialog.add_buttons(Gtk.STOCK_OPEN, 42, "Close", Gtk.ResponseType.CLOSE)
will add "Open" and "Close" buttons to dialog.'

def add_buttons(self, *args):

    def _button(b):
        while b:
            (t, r) = b[0:2]
            b = b[2:]
            (yield (t, r))
    try:
        for (text, response) in _button(args):
            self.add_button(text, response)
    except IndexError:
        raise TypeError('Must    pass    an    even    number    of    arguments')
