井字游戏
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'])
turn = 'X'
for i in range(9):
printBoard(theBoard)
print('Turn for ' + turn + '.Move on which space?')
move = input()
theBoard[move] = turn
if turn == 'X':
turn = 'O'
else:
turn = 'X'
printBoard(theBoard)
完整版
# Tic Tac Toe, by Al Sweigart al@inventwithpython.com
# The classic board game.
ALL_SPACES = list('123456789') # The keys for a TTT board dictionary.
X, O, BLANK = 'X', 'O', ' ' # Constants for string values.
def main():
"""Runs a game of Tic Tac Toe."""
print('Welcome to Tic Tac Toe!')
gameBoard = getBlankBoard() # Create a TTT board dictionary.
currentPlayer, nextPlayer = X, O # X goes first, O goes next.
while True:
print(getBoardStr(gameBoard)) # Display the board on the screen.
# Keep asking the player until they enter a number 1-9:
move = None
while not isValidSpace(gameBoard, move):
print('What is {}\'s move? (1-9)'.format(currentPlayer))
move = input()
updateBoard(gameBoard, move, currentPlayer) # Make the move.
# Check if the game is over:
if isWinner(gameBoard, currentPlayer): # First check for victory.
print(getBoardStr(gameBoard))
print(currentPlayer + ' has won the game!')
break
elif isBoardFull(gameBoard): # Next check for a tie.
print(getBoardStr(gameBoard))
print('The game is a tie!')
break
currentPlayer, nextPlayer = nextPlayer, currentPlayer # Swap turns.
print('Thanks for playing!')
def getBlankBoard():
"""Create a new, blank tic tac toe board."""
board = {} # The board is represented as a Python dictionary.
for space in ALL_SPACES:
board[space] = BLANK # All spaces start as blank.
return board
def getBoardStr(board):
"""Return a text-representation of the board."""
return '''
{}|{}|{} 1 2 3
-+-+-
{}|{}|{} 4 5 6
-+-+-
{}|{}|{} 7 8 9'''.format(board['1'], board['2'], board['3'], board['4'], board['5'], board['6'], board['7'], board['8'], board['9'])
def isValidSpace(board, space):
"""Returns True if the space on the board is a valid space number
and the space is blank."""
return space in ALL_SPACES and board[space] == BLANK
def isWinner(board, player):
"""Return True if player is a winner on this TTTBoard."""
b, p = board, player # Shorter names as "syntactic sugar".
# Check for 3 marks across the 3 rows, 3 columns, and 2 diagonals.
return ((b['1'] == b['2'] == b['3'] == p) or # Across the top
(b['4'] == b['5'] == b['6'] == p) or # Across the middle
(b['7'] == b['8'] == b['9'] == p) or # Across the bottom
(b['1'] == b['4'] == b['7'] == p) or # Down the left
(b['2'] == b['5'] == b['8'] == p) or # Down the middle
(b['3'] == b['6'] == b['9'] == p) or # Down the right
(b['3'] == b['5'] == b['7'] == p) or # Diagonal
(b['1'] == b['5'] == b['9'] == p)) # Diagonal
def isBoardFull(board):
"""Return True if every space on the board has been taken."""
for space in ALL_SPACES:
if board[space] == BLANK:
return False # If a single space is blank, return False.
return True # No spaces are blank, so return True.
def updateBoard(board, space, mark):
"""Sets the space on the board to mark."""
board[space] = mark
if __name__ == '__main__':
main() # Call main() if this module is run, but not when imported.
参考资料：
http://inventwithpython.com/chapter10.html
