Tic Tac Toe in Python

ticktacktoe.py

#!/usr/bin/env/python3
#
# Tic Tac Toe in Python 3
# Licensed under the MIT License
#
# This was created as part
# of a one-hour code challenge.

import subprocess

gameRunning = True
currentPlayer = 1
currentGame = False

def cleanGame():
    game = [ ' ', ' ', ' ',
         ' ', ' ', ' ',
            ' ', ' ', ' ' ]
    return game

def printGame(game):
    outputString = ''
    for pos, i in enumerate(game):
        outputString += '[' + str(i) + '] '
        #print('[' + str(game[i]) + ']', end=' ')
        #print(pos)
        if (pos+1) % 3 == 0:
            # newline
            outputString += "\n"

    print(outputString)

def switchCurrentPlayer(cp):
    if (cp == 1):
        return 2
    else:
        return 1

def updateGame(x, y, game, player):
    # y
    #
    # 3 0 0 0
    # 2 0 0 0
    # 1 0 0 0
    #   1 2 3  x

    x = int(x)
    y = int(y)
    # determine row to 'select'
    if y == 0:
        startPos = 6
    elif y == 1:
        startPos = 3
    else:
        startPos = 0

    # determine final position by 'selecting' column.
    if x == 0:
        startPos = startPos
        # startPos is already correct
    elif x == 1:
        startPos += 1
    else:
        startPos += 2

    # is the position not already taken?
    if game[startPos] != ' ':

        try:
            ignore = input('That position is already taken!')
            pass
        except Exception as e:
            pass

        global currentPlayer
        currentPlayer = switchCurrentPlayer(currentPlayer)
        return game

    # update game array
    if player == 1:
        signature = 'X'
    else:
        signature = 'O'

    game[startPos] = signature

    return game

def requestInput(prompt):
    # probably don't need a function for this.
    # derp
    line = input(prompt)

    # we expect 1 to 3

    # make sure the integer is within our bounds.
    integer = int(line)
    if integer > 3 or integer < 1:
        print('Invalid range')
        return requestInput(prompt)

    return integer-1

def runGameLogic(game, player):
    # 0 0 0
    # 0 0 0
    # 0 0 0

    # there are eight possible combinations to win.
    # too lazy to implement a smart algorithm tbh
    global signatures
    signatures = [ 'X', 'O' ]
    for s in signatures:

        # game = [ '0', '1', '2',
        #          '3', '4', '5',
        #          '6', '7', '8'  ]

        # horizontal wins
        if game[0] == s and game[1] == s and game[2] == s:
            return s
        elif game[3] == s and game[4] == s and game[5] == s:
            return s
        elif game[6] == s and game[7] == s and game[8] == s:
            return s

        # vertical wins
        elif game[0] == s and game[3] == s and game[6] == s:
            return s
        elif game[1] == s and game[4] == s and game[7] == s:
            return s
        elif game[2] == s and game[5] == s and game[8] == s:
            return s

        # diagonal wins
        elif game[0] == s and game[4] == s and game[8] == s:
            return s
        elif game[6] == s and game[4] == s and game[2] == s:
            return s

    # no winner yet..
    return True


while gameRunning:
    # let's get this party started
    subprocess.call(["printf", "'\033c"])

    # create a new game if none is set.
    if currentGame == False:
        currentGame = cleanGame()
        print('Player one is a cross (X), player two is a zero (O).')
    else:
        print('')

    signatures = [ 'X', 'O' ]
    print('Current player is ' + str(currentPlayer) + ' ('+signatures[currentPlayer-1]+')')

    # print the current game.
    printGame(currentGame)

    # request x and y input.
    xcord = requestInput('x: ')
    ycord = requestInput('y: ')

    # update the current game and run our game logic.
    currentGame = updateGame(xcord, ycord, currentGame, currentPlayer)
    result = runGameLogic(currentGame, currentPlayer)

    # determine if the game has a winner.
    if result == True:
        # True = continue game
        if currentPlayer == 1:
            currentPlayer = 2
        else:
            currentPlayer = 1
    else:
        # we have a winner
        gameRunning = False
        subprocess.call(["printf", "'\033c"])
        print('')
        printGame(currentGame)
        print('Player ' + str(signatures.index(result)+1) + ' with signature ' + result + ' has won')
        break