Source code for axelrod.strategies.gradualkiller

from axelrod.action import Action
from axelrod.player import Player
from axelrod.strategy_transformers import InitialTransformer

C, D = Action.C, Action.D

[docs]@InitialTransformer((D, D, D, D, D, C, C), name_prefix=None) class GradualKiller(Player): """ It begins by defecting in the first five moves, then cooperates two times. It then defects all the time if the opponent has defected in move 6 and 7, else cooperates all the time. Initially designed to stop Gradual from defeating TitForTat in a 3 Player tournament. Names - Gradual Killer: [Prison1998]_ """ # These are various properties for the strategy name = "Gradual Killer" classifier = { "memory_depth": float("Inf"), "stochastic": False, "makes_use_of": set(), "long_run_time": False, "inspects_source": False, "manipulates_source": False, "manipulates_state": False, } def strategy(self, opponent: Player) -> Action: if opponent.history[5:7] == [D, D]: return D return C