TicTacToe.py

import random

theBoard = {'top-L': ' ', 'top-M': ' ', 'top-R': ' ',
            'mid-L': ' ', 'mid-M': ' ', 'mid-R': ' ',
            'low-L': ' ', 'low-M': ' ', 'low-R': ' '}

def printBoard(board):
    
    print(board['top-L'] + '|' + board['top-M'] + '|' + board['top-R'])
    print('-+-+-')
    print(board['mid-L'] + '|' + board['mid-M'] + '|' + board['mid-R'])
    print('-+-+-')
    print(board['low-L'] + '|' + board['low-M'] + '|' + board['low-R'])

def winCondition(turn):

    if turn in ((theBoard['low-L']) and (theBoard['low-M']) and (theBoard['low-R'])):
        congrats(turn)
        exit(0)
    elif turn in ((theBoard['low-L']) and (theBoard['mid-L']) and (theBoard['top-L'])):
        congrats(turn)
        exit(0)
    elif turn in ((theBoard['mid-L']) and (theBoard['mid-M']) and (theBoard['mid-R'])):
        congrats(turn)
        exit(0)
    elif turn in ((theBoard['top-L']) and (theBoard['top-M']) and (theBoard['top-R'])):
        congrats(turn)
        exit(0)
    elif turn in ((theBoard['low-M']) and (theBoard['mid-M']) and (theBoard['top-M'])):
        congrats(turn)
        exit(0)
    elif turn in ((theBoard['low-R']) and (theBoard['mid-R']) and (theBoard['top-R'])):
        congrats(turn)
        exit(0)
    elif turn in ((theBoard['low-R']) and (theBoard['mid-M']) and (theBoard['top-L'])):
        congrats(turn)
        exit(0)
    elif turn in ((theBoard['low-L']) and (theBoard['mid-M']) and (theBoard['top-R'])):
        congrats(turn)
        exit(0)

def congrats(turn):
    print("Congratulations! the " + turn + " player wins.")



turn = random.choice(['X', 'O'])

for i in range(9):
    printBoard(theBoard)
    print('it\'s ' + turn + ' turn now, where do you want to place ' + turn + '?')
    move = input()
    if move not in theBoard.keys():
        print("You can only choose top-L/M/R, mid-L/M/R, and low-L/M/R")
        i -= 1
        continue
    theBoard[move] = turn
    winCondition(turn)
    if turn == 'O':
        turn = 'X'
    else:
        turn = 'O'