python井字棋游戏
X="X"
O="O"
EMPTY=" "
def ask_yes_no(question):
response=None;
while response not in("先","后"):
response=input(question).lower()
return response
def ask_number(question ,low,high):
response=None
while response not in range(low,high):
response=int(input(question))
return response
def pieces():
go_first=ask_yes_no("请问玩家你是否先走（先/后):")
if go_first=="先":
print("\n玩家你先走")
human=X
computer=O
else:
print("\n计算机先走")
computer=X
human=O
return computer,human
def new_board():
board=[]
for square in range(9):
board.append(EMPTY)
return board
def display_board(board):
board2=board[:]
for i in range(len(board)):
if board==EMPTY:
board2=i
print("\t",board2[0],"|",board2[1],"|",board2[2])
print("\t","----------")
print("\t",board2[3],"|",board2[4],"|",board2[5])
print("\t", "----------")
print("\t",board2[6],"|",board2[7],"|",board2[8],"\n")
def legal_moves(board):
moves=[]
for square in range(9):
if board[square]==EMPTY:
moves.append(square)
return moves
def winner(board):
WAYS_TO_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 row in WAYS_TO_WIN:
if board[row[0]]==board[row[1]]==board[row[2]]!=EMPTY:
winner=board[row[0]]
return winner
if EMPTY not in board:
return "TIE"
return False
def human_move (board,human):
legal =legal_moves(board)
move =None
while move not in legal:
move=ask_number("你走哪个位置？（0-8）：",0,9)
if move not in legal:
print("\n此位置已经有子了")
return move
def computer_move(board,computer ,human):
board=board[:]
BEST_MOVES=(4,0,2,6,8,1,3,5,7)
for move in legal_moves(board):
board[move]=computer
if winner(board)==computer:
print("计算机下棋位置...",move)
return move
board[move]=EMPTY
for move in legal_moves(board):
board[move]=human
if winner(board)==human:
print("计算机下棋位置...",move)
return move
board[move]=EMPTY
for move in BEST_MOVES:
if move in legal_moves(board):
print("计算机下棋位置....",move)
return move
def next_turn(turn):
if turn ==X:
return O
else:
return X
def main():
computer,human=pieces()
turn =X
board=new_board()
display_board(board)
while not winner(board):
if turn ==human:
move=human_move(board,human)
board[move]=human
else:
move=computer_move(board,computer,human)
board[move]=computer
display_board(board)
turn=next_turn(turn)
the_winner=winner(board)
if the_winner==computer:
print("计算机赢！\n")
elif the_winner==human:
print("玩家赢！\n")
elif the_winner=="TIE":
print("平局，游戏结束\n")
main()
input("按任意键退出游戏")
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