A Python implementation of the iterated prisoner's dilemma, inspired by the 'Evolution of Trust' by Nicky Case (game, github).
Run by evaluating print_statistics on a list of bots, such as
print_statistics([AlwaysBetray(), AlwaysCooperate(), Copycat(), Random()])
This should return a (non-deterministic) score table, higher is better, such as
378 AlwaysBetray
253 Random
203 Copycat
134 AlwaysCooperate
Pull requests that add more bots are welcome.