基于python实现五子棋游戏。棋盘大小为15.15,对弈双方分别使用黑白两色棋子，下在棋盘直线与横线的交叉点上。行棋时两方轮流著棋子下于棋盘空点处，先形成任何方向(横/纵/斜)的5子以上连线者获胜。 2本项目要求实现一个与人他弈的五子棋程序:程序为行棋的一方，用户方通过交互完成与程序的五子棋对弈。 基本功能: 完成的系统需要实现功能: 1用户可以选择先手还是后手: 2胜负状态的判断; 3.有棋子落下后棋盘状态的更新与显示; 4有简易的UI界面 5.双方平局的判断(无空位落子)。

好的，下面是一个基于Python实现的五子棋游戏的代码示例：

import tkinter as tk

class ChessBoard:
    def __init__(self, master, size=15):
        self.master = master
        self.size = size
        self.current_player = 1
        self.game_over = False
        self.chessboard = [[0 for i in range(size)] for j in range(size)]
        self.canvas = tk.Canvas(master, width=size*30, height=size*30, bg='#EBDDB2')
        self.canvas.pack()
        for i in range(size):
            self.canvas.create_line(15, 15+i*30, size*30-15, 15+i*30, width=2)
            self.canvas.create_line(15+i*30, 15, 15+i*30, size*30-15, width=2)
        self.canvas.bind('<Button-1>', self.play)
        self.reset_button = tk.Button(master, text='重新开始', command=self.reset)
        self.reset_button.pack()

    def play(self, event):
        if self.game_over:
            return
        x, y = int(round(event.x/30)-1), int(round(event.y/30)-1)
        if x < 0 or x >= self.size or y < 0 or y >= self.size:
            return
        if self.chessboard[x][y] != 0:
            return
        if self.current_player == 1:
            color = 'black'
            self.current_player = 2
            self.master.title('五子棋（轮到白方下）')
        else:
            color = 'white'
            self.current_player = 1
            self.master.title('五子棋（轮到黑方下）')
        self.chessboard[x][y] = self.current_player
        self.canvas.create_oval(x*30+2, y*30+2, x*30+28, y*30+28, fill=color)
        if self.check_win(x, y):
            self.game_over = True
            if self.current_player == 1:
                self.master.title('五子棋（黑方胜）')
            else:
                self.master.title('五子棋（白方胜）')
        elif self.check_draw():
            self.game_over = True
            self.master.title('五子棋（平局）')

    def check_win(self, x, y):
        color = self.chessboard[x][y]
        count = 1
        i = x-1
        while i >= 0 and self.chessboard[i][y] == color:
            count += 1
            i -= 1
        i = x+1
        while i < self.size and self.chessboard[i][y] == color:
            count += 1
            i += 1
        if count >= 5:
            return True
        count = 1
        i = y-1
        while i >= 0 and self.chessboard[x][i] == color:
            count += 1
            i -= 1
        i = y+1
        while i < self.size and self.chessboard[x][i] == color:
            count += 1
            i += 1
        if count >= 5:
            return True
        count = 1
        i, j = x-1, y-1
        while i >= 0 and j >= 0 and self.chessboard[i][j] == color:
            count += 1
            i -= 1
            j -= 1
        i, j = x+1, y+1
        while i < self.size and j < self.size and self.chessboard[i][j] == color:
            count += 1
            i += 1
            j += 1
        if count >= 5:
            return True
        count = 1
        i, j = x-1, y+1
        while i >= 0 and j < self.size and self.chessboard[i][j] == color:
            count += 1
            i -= 1
            j += 1
        i, j = x+1, y-1
        while i < self.size and j >= 0 and self.chessboard[i][j] == color:
            count += 1
            i += 1
            j -= 1
        if count >= 5:
            return True
        return False

    def check_draw(self):
        for i in range(self.size):
            for j in range(self.size):
                if self.chessboard[i][j] == 0:
                    return False
        return True

    def reset(self):
        self.current_player = 1
        self.game_over = False
        self.chessboard = [[0 for i in range(self.size)] for j in range(self.size)]
        self.canvas.delete('all')
        self.master.title('五子棋（轮到黑方下）')

if __name__ == '__main__':
    root = tk.Tk()
    root.title('五子棋（轮到黑方下）')
    board = ChessBoard(root)
    root.mainloop()

这个代码使用了Tkinter库来创建了一个简单的GUI界面，可以让用户与程序进行交互。用户可以通过点击鼠标来下棋，程序会判断并更新当前局面的状态，并在GUI界面上显示出来。程序还实现了胜负状态的判断和重新开始的功能。