python tic tac toe game. marko s for the recurse center coding challenge.

ticTacToe.py

'''
tic tac toe game in python
marko stamenovic
june 1 2016
recurse center coding challenge
'''

#initialize board
xsos = [' ',' ',' ',' ',' ',' ',' ',' ',' ']
#list of possible moves
possMoves = ['a1','b1','c1','a2','b2','c2','a3','b3','c3']
#past moves
pastmoves=[]

print 'welcome to tic tac toe!!!\n'

def main():
	'''
	main function loop
	'''
	p1,p2 = choosePiece()
	win = False
	count=1

	#play game
	while win == False:
		#check for a tie
		if len(pastmoves) == 9:
			win = True
		#alternate turns between players
		elif count%2 == 0: #player 2 turn
			drawBoard(xsos)
			move,player = inputMove(possMoves,p2)
			makeMove(move,p2)
			win = checkWin(xsos)		
		else: #player 1 turn
			drawBoard(xsos)
			move,player = inputMove(possMoves,p1)
			makeMove(move,p1)
			win = checkWin(xsos)		
		count+=1
	#check if it's a tie or someone won
	if len(pastmoves) == 9:
		catsGame()
	else:
		congrats(player)
	playAgain()

def drawBoard(xsos):
	'''
	function to draw board
	'''
	print '	     ___   ___   ___  '
	print '   |  %s  |  %s  |  %s  |' %(xsos[6],xsos[7],xsos[8])
	print ' 3 | ___ | ___ | ___ |'
	print '   |  %s  |  %s  |  %s  |' %(xsos[3],xsos[4],xsos[5])
	print ' 2 | ___ | ___ | ___ |'
	print '   |  %s  |  %s  |  %s  |' %(xsos[0],xsos[1],xsos[2])
	print ' 1 | ___ | ___ | ___ |'
	print '      a     b     c\n\n'

def choosePiece():
	'''
	function to choose which player is x's or o's
	'''
	possiblePieces = ['x\'s','x','xs','o\'s','o','os']
	p1 = raw_input('player 1, would you like to be x\'s or o\'s? ')
	p1 = p1.lower()
	while p1 not in possiblePieces:
		p1 = raw_input('that\'s not a piece! enter either x\'s or o\'s: ')
		p1 = p1.lower()
		
	if p1 in possiblePieces[0:3]:
		p1 = ['x',1]
		p2 = ['o',2]
	else:
		p1 = ['o',1]
		p2 = ['x',2]
	return p1,p2

def inputMove(poss,player):
	'''
	input move to board position code
	and check for input errors
	'''
	global pastmoves
	move = raw_input('player %i, enter move: ' %player[1])
	move = move.lower()
	while move not in poss:
		move = raw_input('that\'s not even a move!\n\nplayer %s enter a valid move (e.g. \'a3\'): ' %player[1])
		move = move.lower()
	while move in pastmoves:
		move = raw_input('that space is already taken\n\nplayer %s enter a valid move (e.g. \'a3\'): ' %player[1])
		move = move.lower()
	pastmoves.append(move)
	return move,player

def makeMove(move,player):
	'''
	translate board position code into 
	master board list and
	edit global board list accordingly
	'''
	for i in xrange(len(xsos)):
		if move == possMoves[i]:
			xsos[i] = player[0]


def checkWin(xsos):
	'''
	check for a winning combination with a list of booleans
	'''
	#list of winning combinations
	winCond =  [xsos[0] == xsos[1] == xsos[2] in ['x','o'],
				xsos[0] == xsos[3] == xsos[6] in ['x','o'],
				xsos[0] == xsos[4] == xsos[8] in ['x','o'],
				xsos[3] == xsos[4] == xsos[5] in ['x','o'],
				xsos[6] == xsos[4] == xsos[2] in ['x','o'],
				xsos[7] == xsos[4] == xsos[1] in ['x','o'],
				xsos[6] == xsos[7] == xsos[8] in ['x','o'],
				xsos[8] == xsos[5] == xsos[2] in ['x','o']]

	if True in winCond:
		return True
	else:
		return False

def congrats(player):
	'''
	win eye candy
	'''
	drawBoard(xsos)
	print '\nplayer %i wins! woo-hoo!' %player[1]
	print "  .-=========-."
	print "  \\\'-=======-'/"
	print "  _|   .=.   |_"
	print ' ((|  {{*}}  |))'
	print '  \|   /|\   |/'
	print '   | player%i |' %player[1]
	print '    \_     _/'
	print '     _`) (`_'
	print '   _/_______\_'
	print '  /___________\\'

def catsGame():
	'''
	tie eye candy
	'''
	drawBoard(xsos)
	print 'cat\'s game (meow)'
	print '                         _'
	print '                        | \\'
	print '                        | |'
	print '                        | |'
	print '   |\                   | |'
	print '  /, ~\                / /'
	print ' X     `-.....-------./ /'
	print '  ~-. ~  ~              |'
	print '     \             /    |'
	print '      \  /_     ___\   /'
	print '      | /\ ~~~~~   \ |'
	print '      | | \        || |'
	print '      | |\ \       || )'
	print '     (_/ (_/      ((_/'

def playAgain():
	'''
	check if user wants to play again or quit
	'''
	global xsos, pastmoves
	poss = ['y','n']
	yn = raw_input('\nplay again (y/n)? ')
	yn = yn.lower()
	while yn not in poss:
		yn = raw_input('invalid entry. play again (y/n)?  ')
		yn = yn.lower()

	if yn == 'y':
		#reinitialize
		xsos = [' ',' ',' ',' ',' ',' ',' ',' ',' ']
		pastmoves = []
		main()
	else:
		print '\nsee ya next time'

main()