x="x"
o="o"
empty=" "
def ask_yes_no(question):
response=none
while response not in("y","n"):
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("玩家是否先走(y/n):")
if go_first=="y":
print("\n玩家先走")
human=x
computer=o
else:
print("\n計算機先走")
computer=x
human=o
return computer,human
def new_board():
board=
for square in range(9):
return board
def display_board(board):
board2=board[:]
for i in range(len(board)):
if board[i]==empty:
board2[i]=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:
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("你走哪個位置？",0,9)
if move not in legal:
print("\n此位置已經落過子了")
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("計算機下棋位置...",move)
return move
board[move]=empty
for move in legal_moves(board):
board[move]=human
if winner(board)==human:
print("計算機下棋位置...",move)
return move
board[move]=empty
for move in best_moves:
if move in legal_moves(board):
print("計算機下棋位置...",move)
return move
def next_turn(turn):
if turn==x:
return o
else:
return x
def main():
computer,human=pieces()#賦值x或o
turn=x
board=new_board()#初始化棋盤
display_board(board)#顯示當前棋盤
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("computer winner!\n")
elif the_winner==human:
print("you win!\n")
elif the_winner=="tie":
print("tie!\n")
main()
input("按任意鍵退出遊戲")
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