Pythonic gui format?

[Gregory Petrosyan]

Buenos dias, amigos!
I have to write  _simple_  gui library, for embedding into game. My
first attempt was to use XML: isn't it cute to describe ui in such a
way:

<window>
    <title>Hello World!</title>
    <image text="nice picture here" pos=... src=... />
    <text opts=...>
        (some text here)
    </text>
    <list>
        <item>first element</item>
        <item>second one...</item>
    </list>
    <button action=... text="Click Me!" />
</window>

(or something similar)

But after reading "Python Is Not Java"
http://dirtsimple.org/2004/12/python-is-not-java.html  (BTW I'm not a
Java programmer) I realised that it is actually not cute at all :) (am
I wrong here?)
I am currently seeking for pythonic alternative for XML. One possible
way is to create a class for every (type of?) window, like

class SomeDlg(Window):
    def __init__(self, dict?):
        self.setdict(dict)
        self.add_text("$friend would like to speak to you. $question")
        self.add_button(action=self.onclick,
                        text="Yeah, I'd like to $action !")
        ...

    def onclick(self):
        # process data here, send some messages etc.


Isn't it ugly a bit? Another variant is

dlg = Window(dict, [opts])
dlg.text("text here", [opts])
dlg.image(src, pos, text [etc])
....

or possibly

dlg = Window(...)
dlg.text = Text(...)
dlg.button = Button(...)
...
dlg.display(surface)


These styles of course can be combined... But IMHO looks not very nice
:( Maybe I shall not rely on introspection? Any suggestions, comments,
thoughts and links are welcome.
Thanks.