Source code for axelrod.strategies.appeaser
from axelrod.action import Action
from axelrod.player import Player
C, D = Action.C, Action.D
[docs]
class Appeaser(Player):
"""A player who tries to guess what the opponent wants.
Switch the classifier every time the opponent plays D.
Start with C, switch between C and D when opponent plays D.
Names:
- Appeaser: Original Name by Jochen Müller
"""
name = "Appeaser"
classifier = {
"memory_depth": float("inf"), # Depends on internal memory.
"stochastic": False,
"long_run_time": False,
"inspects_source": False,
"manipulates_source": False,
"manipulates_state": False,
}
[docs]
def strategy(self, opponent: Player) -> Action:
"""Actual strategy definition that determines player's action."""
if not len(opponent.history):
return C
else:
if opponent.history[-1] == D:
if self.history[-1] == C:
return D
else:
return C
return self.history[-1]