Here is my version of TicTacToe on python 3.x
I'm learning python for a several weeks and I will be very appretiated if you take a look on my script and review it!
P.S. I've used NumPad to input move to make game more user-friendly. So 5 means center, 7 means right-upper corner, 6 means right side etc.
from random import randint, choice
from os import system as bash
from time import time
def intInput(StringToDisplay):
# Simply checks that input is valid integer
while True:
try:
x = int(input(StringToDisplay))
return x
break
except ValueError:
print('Input integer number, please')
except Exception:
print('Unexpected error or keyboard interrupt')
def drawBoard():
print('\
╔═══╦═══╦═══╗\n\
║ {0} ║ {1} ║ {2} ║\n\
╠═══╬═══╬═══╣\n\
║ {3} ║ {4} ║ {5} ║\n\
╠═══╬═══╬═══╣\n\
║ {6} ║ {7} ║ {8} ║\n\
╚═══╩═══╩═══╝ '.format(
board_status[7], board_status[8], board_status[9],
board_status[4], board_status[5], board_status[6],
board_status[1], board_status[2], board_status[3]))
def askPlayerLetter():
# Function that asks which letter player wants to use
print('Do you want to be X or O?')
Letter = input().upper()
while Letter != 'X' and Letter != 'O':
print('Please type appropriate symbol')
Letter = input('Prompt: ').upper()
if Letter == 'X': # then X will be used by player; O by computer
return ['X', 'O']
else:
return ['O', 'X']
def whoGoesFirst():
# Timer used to count 0.75 seconds while displaying who goes first
if randint(0, 1) == 0:
CurrentTime, Timer = time(), time() + 0.75
print('You go first')
while Timer > CurrentTime:
CurrentTime = time()
return 'player'
else:
CurrentTime, Timer = time(), time() + 0.75
print('Computer goes first')
while Timer > CurrentTime:
CurrentTime = time()
return 'computer'
def makeMove(Board, Move, Letter):
Board[Move] = Letter
def isSpaceFree(Board, Move):
return Board[Move] == ' '
def playerMove():
Move = 0
while not (0 < Move < 10) or not (isSpaceFree(board_status, int(Move))):
Move = intInput('Enter your move: ')
return int(Move)
def isWinner(brd, lttr):
# Returns a boolean value. brd (board) and lttr (letter) used to make
# code block compact.
return ((brd[7] == lttr and brd[8] == lttr and brd[9] == lttr) or
(brd[4] == lttr and brd[5] == lttr and brd[6] == lttr) or
(brd[1] == lttr and brd[2] == lttr and brd[3] == lttr) or
(brd[7] == lttr and brd[5] == lttr and brd[3] == lttr) or
(brd[9] == lttr and brd[5] == lttr and brd[1] == lttr) or
(brd[7] == lttr and brd[4] == lttr and brd[1] == lttr) or
(brd[8] == lttr and brd[5] == lttr and brd[2] == lttr) or
(brd[9] == lttr and brd[6] == lttr and brd[3] == lttr))
def computerMove():
'''
Simple AI that checks
1)Can computer win in the next move
2)Can player win in the next move
3)Is there any free corner
4)Is center is free
5)Is there any free side
And returns a move digit
'''
for i in range(1, 10):
Copy = board_status.copy()
if isSpaceFree(Copy, i):
makeMove(Copy, i, ComputerLetter)
if isWinner(Copy, ComputerLetter):
return i
for i in range(1, 10):
Copy = board_status.copy()
if isSpaceFree(Copy, i):
makeMove(Copy, i, PlayerLetter)
if isWinner(Copy, PlayerLetter):
return i
move = randomMoveFromList([7, 9, 1, 3])
if move is not None:
return move
if isSpaceFree(board_status, 5):
return 5
move = randomMoveFromList([8, 4, 2, 6])
if move is not None:
return move
def randomMoveFromList(MovesList):
PossibleMoves = []
for i in MovesList:
if isSpaceFree(board_status, i):
PossibleMoves.append(i)
if len(PossibleMoves) != 0:
return choice(PossibleMoves)
else:
return None
def isBoardFull():
for i in range(1, 10):
if isSpaceFree(board_status, i):
return False
return True
def playAgain():
print('Do you want to play again? [y/N]')
PlayAgainInput = input().lower()
return (PlayAgainInput.startswith('y') or PlayAgainInput == '')
# "bash('clear')" function simply clears the screen of the terminal.
# If you want run this script on system that uses other shell then
# substitute "clear" with a command that your shell uses to clear the screen
# P.S. for windows it is "cls".
bash('clear')
print('Welcome to Tic Tac Toe')
PlayAgainWish = True
print('To win, you have to place 3 X-s or O-s in a row.\n\
Use NumPad to enter your move (!). Here is the key map.')
board_status = ['', 1, 2, 3, 4, 5, 6, 7, 8, 9]
drawBoard()
print('You have to be sure that you are making move to a free cell.\n\n')
PlayerLetter, ComputerLetter = askPlayerLetter()
while PlayAgainWish:
bash('clear')
board_status = 10 * [' ']
turn = whoGoesFirst()
while True:
if turn == 'player':
bash('clear')
print(' YOUR MOVE')
drawBoard()
move = playerMove()
makeMove(board_status, move, PlayerLetter)
turn = 'computer'
if isWinner(board_status, PlayerLetter):
bash('clear')
print('Hooray, you have won the game!')
drawBoard()
PlayAgainWish = playAgain()
break
elif isBoardFull():
bash('clear')
print("It's a tie!")
drawBoard()
PlayAgainWish = playAgain()
break
else:
# All this dots and timers are used to make animation of
# computer moving. You will understand if you will run the script.
for i in ['', '.', '..', '...']:
bash('clear')
print(' Computer is making move' + i)
drawBoard()
CurrentTime, Timer = time(), time() + 0.15
while Timer > CurrentTime:
CurrentTime = time()
if i == '..':
move = computerMove()
makeMove(board_status, move, ComputerLetter)
turn = 'player'
if isWinner(board_status, ComputerLetter):
bash('clear')
print('Oops, you lose!')
drawBoard()
PlayAgainWish = playAgain()
break
elif isBoardFull():
bash('clear')
print("It's a tie!")
DrawBoard()
PlayAgainWish = playAgain()
break