i am making a tic-tac-toe game using python. i am pretty new to it,
but cant seem to figure this one out.
Here is my code:
X = "X"
O = "O"
empty = " "
tie = "Tie"
squares = 9
def display():
print """Welcome to Tic-Tac-Toe. Player will play against the
computer.
\nYou will move by typing in the number to the
corresponding square below:
0 | 1 | 2
-------------
3 | 4 | 5
-------------
6 | 7 | 8 \n"""
def select():
question = ask("Do you want to go first? (y/n)")
if question == "y":
player = X
computer = O
else:
computer = X
player = O
return computer, player
def newBoard():
board = []
for i in range(squares):
board.append(empty)
return board
def displayBoard(board):
print "\n\t", board[0], "|", board[1], "|", board[2]
print "\t", "---------"
print "\t", board[3], "|", board[4], "|", board[5]
print "\t", "---------"
print "\t", board[6], "|", board[7], "|", board[8], "\n"
def boardMoves(board):
moves = []
for i in range(squares):
if board[i] == empty:
moves.append(i)
return moves
def findWinner(board):
win = ((0, 1, 2),
(3, 4, 5),
(6, 7, 8),
(0, 3, 6),
(1, 4, 7),
(2, 5, 8),
(0, 4, 8),
(2, 4, 6))
for i in win:
if board[i[0]] == board[i[1]] == board[i[2]] != empty:
winner = board[i[0]]
return winner
if empty not in board:
return tie
return None
def askMove(question, low, high):
response = None
while response not in range(low, high):
response = int(raw_input(question))
return response
def playerMove(board, player):
legal = boardMoves(board)
move = None
while move not in legal:
move = askMove("Pick a number where you want to move(0-8):",
0, squares)
if move not in legal:
print "\nThat move is taken already. Pick another."
return move
def compMove(board, computer, player):
board = board[:]
strategy = (4, 0, 2, 6, 8, 1, 3, 5, 7)
print "Computer chooses:",
# if computer can win, take that move
for move in boardMoves(board):
board[move] = computer
if findWinner(board) == computer:
print move
return move
board[move] = empty
# if human can win, block that move
for move in boardMoves(board):
board[move] = player
if findWinner(board) == player:
print move
return move
board[move] = empty
# If no one can win pick best open square
for move in strategy:
if move in boardMoves(board):
print move
return move
def nextTurn(turn):
if turn == X:
return 0
else:
return X
def gameWinner(winner, computer, player):
if winner == computer:
print "Computer Wins. Better luck next time"
elif winner == player:
print "You win. Good job!"
elif winner == tie:
print "Tie game. Play again."
def main():
display()
computer, player = select()
turn = X
board = newBoard()
displayBoard(board)
while not findWinner(board):
if turn == player:
move = playerMove(board, player)
board[move] = player
else:
move = compMove(board, computer, player)
board[move] = computer
displayBoard(board)
turn = nextTurn(turn)
winner = findWinner(board)
gameWinner(winner, computer, player)
main()
Here is my problem:
If you hit 'n' at the beginning prompt, the computer does four moves
automatically and wins- you can't input anything. If you hit 'y' at
the beginning prompt, you can play but cannot win. I got three x's in
a row and it didn't let me win. It just keeps letting
you input numbers until the computer wins even if you have three in a
row.
If anyone can help please do asap.
Thank you!
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