Well pretty slowly since everything is new to me. I have found it hard to design code package structure for python. I simply have too little practice and experience on python programming. Anyway it is useful to learn something new.
I will put the codes into sourceforce when I have something worth to try, on friday I think.
So, how is going?
Where I can see and try any code?
Ok, I check where to put it.
no objection. But I'd like code is some version control, so I can see it from time to time.
If there is no objections I can start coding python version? I can do design and documenting as code progresses.
Ok, that game was maybe badly done. It is simple, so maybe try optimising with it?
We should anyway do good design first. The Java version code is so complex that optimising it for olpc is going to be hard. Now we have good change to do the game as it should have been done on first time 
Looking at the code... no wonder it is slow on slow device....
Loading images every circle of game loop - sound nice.
Blitting whole screen every circle - this is really fast...
May be some other things (just a brief look).
That one seems written in really "optimal" way
I tested pygame with simple Duck Shooter game on olpc. First it crashed on lack of mp3 sound file support.
So I commented music off from code. Now it works, but it is really really really slow. Same game on my laptop is too fast to play.
I did not see that there would be any timeout that would slow the game in code. And this game is really simple one simple duck image going across the screen with background image. This game is single code file with less than 100 rows of code.
It seems that pygame is easy to install on olpc, but is it actually capable of processing the game fast enough to make it enjoyable experience? We may have to make game much simple for olpc.
Tested duck shoot game : http://www.mediafire.com/file/n1h3v9wvdzdq1g7/duck.hunt.rar
I installed pygame on my ubuntu and pydev on eclipse. wrote a simple test that uses full screen animation (from instruction) and it worked.
Seems pretty straight forward environment. But it is too early to make opinion.