Theoretical Duopoly Simulation

import random

class Personality():
	def __init__(self, name = "Unnamed"):
		self.name = name
		self.score = 0

def getName(self):
		return self.name

def setName(self, name):
		self.name = name

def getScore(self):
		return self.score
	
	def setScore(self, newScore):
		self.score = newScore

def addToScore(self, points):
		self.score += points

class Human(Personality):
	def cheat(self, opponentCheated):
		print self.getName() + ", it is your turn."
		while True:
			response = raw_input("Do you cheat? Type Y or N: ")
			if response == "y" or response == "Y":
				return True
			elif response == "n" or response == "N":
				return False
			else:
				print "Invalid"

class TitForTat(Personality):
	def cheat(self, opponentCheated):
		return opponentCheated

class Random(Personality):
	def cheat(self, opponentCheated):
		return random.choice([True, False])

class AlwaysCheat(Personality):
	def cheat(self, opponentCheated):
		return True
	
class NeverCheat(Personality):
	def cheat(self, opponentCheated):
		return False

class GrimTrigger(Personality):
	def __init__(self):
		self.trigger = False

def setTrigger(self):
		#toggles trigger
		self.trigger = not self.trigger

def getTrigger(self):
		return self.trigger

def cheat(self, opponentCheated):
		if opponentCheated and not self.getTrigger():
			self.setTrigger()
		return self.getTrigger()

def play(player1, player2, turnsToPlay):
	turn = 0

player1.setScore(0)
	player2.setScore(0)

# Neither player has cheated yet. In general, the AI scripts will begin by assuming good faith.
	# Source: page 161 "You begin by cooperating on the first round." for tit-for-tat strategy
	player1Cheated = False
	player2Cheated = False

while turn < turnsToPlay:
		turn += 1
		print
		print "Turn " + str(turn)
		print player1.getName() + ": $" + str(player1.getScore())
		print player2.getName() + ": $" + str(player2.getScore())
		player1WillCheat = player1.cheat(player2Cheated)
		player2WillCheat = player2.cheat(player1Cheated)
		if player1WillCheat and player2WillCheat:
			print "%s cheats. %s cheats." % (player1.getName(), player2.getName())
			print "%s and %s are competing and make medicore profits." % (player1.getName(), player2.getName())
			player1.addToScore(2)
			player2.addToScore(2)
		elif player1WillCheat and not player2WillCheat:
			print "%s cheats. %s cooperates." % (player1.getName(), player2.getName())
			print "%s made high profits at %s's expense." % (player1.getName(), player2.getName())
			player1.addToScore(4)
			player2.addToScore(1)
		elif not player1WillCheat and player2WillCheat:
			print "%s cooperates. %s cheats." % (player1.getName(), player2.getName())
			print "%s made high profits at %s's expense." % (player2.getName(), player1.getName())
			player1.addToScore(1)
			player2.addToScore(4)
		elif not player1WillCheat and not player2WillCheat:
			print "%s cooperates. %s cooperates." % (player1.getName(), player2.getName())
			print "%s and %s control the market and make moderate profits." % (player1.getName(), player2.getName())
			player1.addToScore(3)
			player2.addToScore(3)
		player1Cheated = player1WillCheat
		player2Cheated = player2WillCheat

print "\nFinal outcome:"
	print player1.getName() + ": $" + str(player1.getScore())
	print player2.getName() + ": $" + str(player2.getScore())
	return (player1.getScore(), player2.getScore())

def about():
	print "This is a simple duopoly simulation. On each turn, players will have an opportunity to cheat on their agreement."
	print "If both players cheat, they will be in competition and make medicore profits. (2;2)"
	print "If only one player cheats, the cheater will make high profits and the other player will make low profits. (4;1) or (1;4)"
	print "If neither cheat, both players will control the market and make moderate profits. (3;3)"

def createPlayer():
	while True:
		personalities = {1: Human(), 2: AlwaysCheat(), 3: NeverCheat(), 4: Random(), 5: TitForTat(), 6: GrimTrigger()}
		print "Choose a personality type:"
		print "1: Human (you will play)"
		print "2: Always cheat"
		print "3: Never cheat"
		print "4: Randomly cheat"
		print "5: Tit-for-Tat strategy"
		print "6: Grim trigger strategy"
		try:
			return personalities[int(raw_input("Enter a number from 1-6: "))]
		except:
			print "Invalid"
	
def initialize():
	about()
	print "\nPLAYER 1:\n"
	player1 = createPlayer()
	player1.setName(raw_input("Enter player 1's name: "))
	print "\nPLAYER 2:\n"
	player2 = createPlayer()
	player2.setName(raw_input("Enter player 2's name: "))
	while True:
		try:
			numberOfTurns = int(raw_input("Enter turns to play: "))
			break
		except:
			"Please enter a valid integer"
	while True:
		try:
			numberOfTrials = int(raw_input("Enter number of games: "))
			break
		except:
			"Please enter a valid integer"
	trial = 0
	player1Outcomes = []
	player2Outcomes = []
	while trial < numberOfTrials:
		outcome = play(player1, player2, numberOfTurns)
		player1Outcomes.append(outcome[0])
		player2Outcomes.append(outcome[1])
		trial += 1
	player1Average = sum(player1Outcomes)/len(player1Outcomes)
	player2Average = sum(player2Outcomes)/len(player2Outcomes)
	print "\nFINAL AVERAGES"
	print player1.getName() + ": $" + str(player1Average)
	print player2.getName() + ": $" + str(player2Average)

initialize()

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