tic tac toe project in python code example
Example 1: how to code a tic tac toe game with ai python
board = [' ' for x in range(10)]
def insertLetter(letter, pos):
board[pos] = letter
def spaceIsFree(pos):
return board[pos] == ' '
def printBoard(board):
print(' | |')
print(' ' + board[1] + ' | ' + board[2] + ' | ' + board[3])
print(' | |')
print('-----------')
print(' | |')
print(' ' + board[4] + ' | ' + board[5] + ' | ' + board[6])
print(' | |')
print('-----------')
print(' | |')
print(' ' + board[7] + ' | ' + board[8] + ' | ' + board[9])
print(' | |')
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[1] == le and bo[4] == le and bo[7] == le) or(bo[2] == le and bo[5] == le and bo[8] == le) or(bo[3] == le and bo[6] == le and bo[9] == le) or(bo[1] == le and bo[5] == le and bo[9] == le) or(bo[3] == le and bo[5] == le and bo[7] == le)
def playerMove():
run = True
while run:
move = input('Please select a position to place an \'X\' (1-9): ')
try:
move = int(move)
if move > 0 and move < 10:
if spaceIsFree(move):
run = False
insertLetter('X', move)
else:
print('Sorry, this space is occupied!')
else:
print('Please type a number within the range!')
except:
print('Please type a number!')
def compMove():
possibleMoves = [x for x, letter in enumerate(board) if letter == ' ' and x != 0]
move = 0
for let in ['O', 'X']:
for i in possibleMoves:
boardCopy = board[:]
boardCopy[i] = let
if isWinner(boardCopy, let):
move = i
return move
cornersOpen = []
for i in possibleMoves:
if i in [1,3,7,9]:
cornersOpen.append(i)
if len(cornersOpen) > 0:
move = selectRandom(cornersOpen)
return move
if 5 in possibleMoves:
move = 5
return move
edgesOpen = []
for i in possibleMoves:
if i in [2,4,6,8]:
edgesOpen.append(i)
if len(edgesOpen) > 0:
move = selectRandom(edgesOpen)
return move
def selectRandom(li):
import random
ln = len(li)
r = random.randrange(0,ln)
return li[r]
def isBoardFull(board):
if board.count(' ') > 1:
return False
else:
return True
def main():
print('Welcome to Tic Tac Toe!')
printBoard(board)
while not(isBoardFull(board)):
if not(isWinner(board, 'O')):
playerMove()
printBoard(board)
else:
print('Sorry, O\'s won this time!')
break
if not(isWinner(board, 'X')):
move = compMove()
if move == 0:
print('Tie Game!')
else:
insertLetter('O', move)
print('Computer placed an \'O\' in position', move , ':')
printBoard(board)
else:
print('X\'s won this time! Good Job!')
break
if isBoardFull(board):
print('Tie Game!')
while True:
answer = input('Do you want to play again? (Y/N)')
if answer.lower() == 'y' or answer.lower == 'yes':
board = [' ' for x in range(10)]
print('-----------------------------------')
main()
else:
break
Example 2: how to make tic tac toe in python
board = ["-", "-", "-",
"-", "-", "-",
"-", "-", "-"]
game_still_going = True
winner = None
current_player = "X"
def play_game():
display_board()
while game_still_going:
handle_turn(current_player)
check_if_game_over()
flip_player()
if winner == "X" or winner == "O":
print(winner + " won.")
elif winner is None:
print("Tie.")
def display_board():
print("\n")
print(board[0] + " | " + board[1] + " | " + board[2] + " 1 | 2 | 3")
print(board[3] + " | " + board[4] + " | " + board[5] + " 4 | 5 | 6")
print(board[6] + " | " + board[7] + " | " + board[8] + " 7 | 8 | 9")
print("\n")
def handle_turn(player):
print(player + "'s turn.")
position = input("Choose a position from 1-9: ")
valid = False
while not valid:
while position not in ["1", "2", "3", "4", "5", "6", "7", "8", "9"]:
position = input("Choose a position from 1-9: ")
position = int(position) - 1
if board[position] == "-":
valid = True
else:
print("You can't go there. Go again.")
board[position] = player
display_board()
def check_if_game_over():
check_for_winner()
check_for_tie()
def check_for_winner():
global winner
row_winner = check_rows()
column_winner = check_columns()
diagonal_winner = check_diagonals()
if row_winner:
winner = row_winner
elif column_winner:
winner = column_winner
elif diagonal_winner:
winner = diagonal_winner
else:
winner = None
def check_rows():
global game_still_going
row_1 = board[0] == board[1] == board[2] != "-"
row_2 = board[3] == board[4] == board[5] != "-"
row_3 = board[6] == board[7] == board[8] != "-"
if row_1 or row_2 or row_3:
game_still_going = False
if row_1:
return board[0]
elif row_2:
return board[3]
elif row_3:
return board[6]
else:
return None
def check_columns():
global game_still_going
column_1 = board[0] == board[3] == board[6] != "-"
column_2 = board[1] == board[4] == board[7] != "-"
column_3 = board[2] == board[5] == board[8] != "-"
if column_1 or column_2 or column_3:
game_still_going = False
if column_1:
return board[0]
elif column_2:
return board[1]
elif column_3:
return board[2]
else:
return None
def check_diagonals():
global game_still_going
diagonal_1 = board[0] == board[4] == board[8] != "-"
diagonal_2 = board[2] == board[4] == board[6] != "-"
if diagonal_1 or diagonal_2:
game_still_going = False
if diagonal_1:
return board[0]
elif diagonal_2:
return board[2]
else:
return None
def check_for_tie():
global game_still_going
if "-" not in board:
game_still_going = False
return True
else:
return False
def flip_player():
global current_player
if current_player == "X":
current_player = "O"
elif current_player == "O":
current_player = "X"
play_game()