This was made with Al Sweigart’s Invent Your Own Computer Games with Python course.
import random
def drawBoard(board):
print(board[7]+'|'+board[8]+'|'+board[9])
print('-+-+-')
print(board[4]+'|'+board[5]+'|'+board[6])
print('-+-+-')
print(board[1]+'|'+board[2]+'|'+board[3])
def inputPlayerLetter():
letter=''
while not (letter == 'X' or letter == 'O'):
print('Do you want to be X or O?')
letter = input().upper()
if letter=='X':
return ['X', 'O']
else:
return ['O', 'X']
def whoGoesFirst():
if random.randint(0, 1) == 0:
return 'computer'
else:
return 'player'
def makeMove(board, letter, move):
board[move] = letter
def isWinner(bo, le):
return ((bo[7] == le and bo[8] == le and bo[9] == le) or
(bo[4] == le and bo[5] == le and bo[6] == le) or
(bo[1] == le and bo[2] == le and bo[3] == le) or
(bo[7] == le and bo[4] == le and bo[1] == le) or
(bo[8] == le and bo[5] == le and bo[2] == le) or
(bo[9] == le and bo[6] == le and bo[3] == le) or
(bo[7] == le and bo[5] == le and bo[3] == le) or
(bo[9] == le and bo[5] and bo[1] == le))
def getBoardCopy(board):
boardCopy = []
for i in board:
boardCopy.append(i)
return boardCopy
def isSpaceFree(board, move):
return board[move]==' '
def getPlayerMove(board):
move = ' '
while move not in '1 2 3 4 5 6 7 8 9'.split() or not isSpaceFree(board,int(move)):
print('What is your next move? (1-9)')
move = input()
return int(move)
def chooseRandomMoveFromList(board, movesList):
possibleMoves = []
for i in movesList:
if isSpaceFree(board,i):
possibleMoves.append(i)
if len(possibleMoves) != 0 :
return random.choice(possibleMoves)
else:
return None
def getComputerMove(board, computerLetter):
if computerLetter == 'X':
playerLetter = 'O'
else:
playerLetter = 'X'
for i in range(1, 10):
boardCopy = getBoardCopy(board)
if isSpaceFree(boardCopy, i):
makeMove(boardCopy,computerLetter, i)
if isWinner(boardCopy, computerLetter):
return i
for i in range(1, 10):
boardCopy = getBoardCopy(board)
if isSpaceFree(boardCopy, i):
makeMove(boardCopy,playerLetter, i)
if isWinner(boardCopy, playerLetter):
return i
move = chooseRandomMoveFromList(board, [1, 3, 7, 9])
if move != None:
return move
if isSpaceFree(board, 5):
return 5
return chooseRandomMoveFromList(board, [2, 4, 6, 8])
def isBoardFull(board):
for i in range(1, 10):
if isSpaceFree(board, i):
return False
return True
print('Welcome to Tic-Tac-Yoe!')
while True:
theBoard = [' '] * 10
playerLetter, computerLetter = inputPlayerLetter()
turn = whoGoesFirst()
print('The ' + turn + 'will go first.')
gameIsPlaying = True
while gameIsPlaying:
if turn == 'player':
drawBoard(theBoard)
move = getPlayerMove(theBoard)
makeMove(theBoard ,playerLetter, move)
if isWinner(theBoard, playerLetter):
drawBoard(theBoard)
print('Hooray! You have won the game!')
gameIsPlaying = False
else:
if isBoardFull(theBoard):
drawBoard(theBoard)
print('The game is a tie!')
break
else:
turn = 'computer'
else:
move = getComputerMove(theBoard, computerLetter)
makeMove(theBoard, computerLetter, move)
if isWinner(theBoard, computerLetter):
drawBoard(theBoard)
print('The computer has beaten you!You lose.')
gameIsPlaying = False
else:
if isBoardFull(theBoard):
drawBoard(theBoard)
print('The game is a tie!')
break
else:
turn = 'player'