python实现五子棋

五子棋是一种经典的棋类游戏，下面是一个简单的 Python 实现示例：

# 定义棋盘尺寸
BOARD_SIZE = 15

# 初始化棋盘
board = [[' ' for _ in range(BOARD_SIZE)] for _ in range(BOARD_SIZE)]

# 定义玩家和电脑的棋子
player = 'X'
computer = 'O'

# 打印棋盘
def print_board():
    for i in range(BOARD_SIZE):
        for j in range(BOARD_SIZE):
            print(board[i][j], end=' ')
        print()

# 判断是否胜利
def check_win(row, col, piece):
    # 横向判断
    count = 0
    for i in range(row - 4, row + 5):
        if i < 0 or i >= BOARD_SIZE:
            continue
        if board[i][col] == piece:
            count += 1
            if count >= 5:
                return True
        else:
            count = 0

    # 纵向判断
    count = 0
    for j in range(col - 4, col + 5):
        if j < 0 or j >= BOARD_SIZE:
            continue
        if board[row][j] == piece:
            count += 1
            if count >= 5:
                return True
        else:
            count = 0

    # 斜向判断（左上至右下）
    count = 0
    for k in range(-4, 5):
        i = row + k
        j = col + k
        if i < 0 or i >= BOARD_SIZE or j < 0 or j >= BOARD_SIZE:
            continue
        if board[i][j] == piece:
            count += 1
            if count >= 5:
                return True
        else:
            count = 0

    # 斜向判断（右上至左下）
    count = 0
    for k in range(-4, 5):
        i = row + k
        j = col - k
        if i < 0 or i >= BOARD_SIZE or j < 0 or j >= BOARD_SIZE:
            continue
        if board[i][j] == piece:
            count += 1
            if count >= 5:
                return True
        else:
            count = 0

    return False

# 主循环
def main():
    while True:
        print_board()

        # 玩家落子
        while True:
            row = int(input("请输入落子的行号（0-%d）：" % (BOARD_SIZE - 1)))
            col = int(input("请输入落子的列号（0-%d）：" % (BOARD_SIZE - 1)))
            if board[row][col] == ' ':
                board[row][col] = player
                break
            else:
                print("该位置已经有棋子，请重新输入！")

        # 判断玩家是否胜利
        if check_win(row, col, player):
            print_board()
            print("恭喜你，你赢了！")
            break

        # 电脑落子
        for i in range(BOARD_SIZE):
            for j in range(BOARD_SIZE):
                if board[i][j] == ' ':
                    board[i][j] = computer
                    break
            else:
                continue
            break

        # 判断电脑是否胜利
        if check_win(i, j, computer):
            print_board()
            print("很遗憾，你输了！")
            break

# 运行主循环
if __name__ == '__main__':
    main()

这个简单的实现中，通过控制台输入行号和列号来落子，玩家执黑棋（X），电脑执白棋（O）。程序会检测每一步是否有玩家或电脑获胜，并在胜利后结束游戏。在棋盘上，空格代表空位，X代表黑棋，O代表白棋。

注意：这只是一个简单的实现示例，还可以进一步优化和完善。