Automatically exported from code.google.com/p/tetris-tk
I read somewhere that a good programmer can write a simple tetris program in about 2-hours. This took me about six-weeks off and on. I guess I'm not that good a programmer.
But it works with Python 2.6 or greater (but not 3.0) and the default TK GUI library, so it doesn't need extra python libraries, which is nice.