设计一个具备一定功能的python五子棋系统，要有合理的输入输出方式和功能流程，有python的组合数据类型，标准库函数的使用方法，python的程序设计方法，功能数量和系统复杂程度适中

好的，我可以为您介绍一个具备一定功能的Python五子棋系统。这个系统由以下几个部分组成：

1. 棋盘的数据结构和初始化。我们使用一个二维列表来表示棋盘，每个元素代表一个交叉点，值分别为0（代表空白）、1（代表黑子）和2（代表白子）。初始化时将所有元素赋值为0。

board = [[0 for i in range(15)] for j in range(15)]

2. 用户交互。我们使用Python内置的input函数来获取用户输入，并使用try-except语句来处理输入错误的情况。每次用户下棋后，我们需要更新棋盘，检查胜负情况，以及交换玩家。

def player_move(player):
    while True:
        try:
            x, y = map(int, input("Player %s's turn, please input the coordinate (x, y):" % player).split(","))
            if x < 1 or x > 15 or y < 1 or y > 15:
                print("The coordinate is out of range, please try again.")
            elif board[x-1][y-1] != 0:
                print("The coordinate has been occupied, please try again.")
            else:
                board[x-1][y-1] = player
                check_win(player)
                return  # 交换玩家
        except:
            print("Invalid input, please try again.")

3. 检查胜负。我们需要编写一个函数来检查当前棋局是否有一方获胜。我们使用一个嵌套的for循环来遍历整个棋盘，检查每个位置是否是当前玩家的棋子，并使用一个方向数组来判断是否有五个连续的棋子。

def check_win(player):
    directions = [(0, 1), (1, 0), (1, 1), (-1, 1)]  # 右、下、右下、左下
    for i in range(15):
        for j in range(15):
            if board[i][j] == player:
                for d in directions:
                    x, y = i, j
                    count = 1
                    while count < 5:
                        x += d[0]
                        y += d[1]
                        if x < 0 or x >= 15 or y < 0 or y >= 15 or board[x][y] != player:
                            break
                        count += 1
                    if count == 5:
                        print("Player %s wins!" % player)
                        exit()

4. 主程序。我们使用一个while循环来持续进行游戏，直到有一方获胜或者平局。每次循环，我们交替调用player_move函数，传入当前玩家的编号。

def main():
    player = 1
    while True:
        draw_board()
        player_move(player)
        player = 3 - player  # 交换玩家

5. 可视化。我们可以编写一个函数来在控制台中绘制当前的棋盘。我们使用Unicode字符来代表棋子，使用os库来清除屏幕，使得每次棋盘都是在同一位置输出。

import os

def draw_board():
    os.system("cls")
    print("   " + " ".join(str(i) for i in range(1, 16)))
    for i in range(15):
        print("%2d " % (i+1) + " ".join(["●" if x == 1 else "○" if x == 2 else "·" for x in board[i]]))

完整代码如下:

import os

board = [[0 for i in range(15)] for j in range(15)]

def draw_board():
    os.system("cls")
    print("   " + " ".join(str(i) for i in range(1, 16)))
    for i in range(15):
        print("%2d " % (i+1) + " ".join(["●" if x == 1 else "○" if x == 2 else "·" for x in board[i]]))

def player_move(player):
    while True:
        try:
            x, y = map(int, input("Player %s's turn, please input the coordinate (x, y):" % player).split(","))
            if x < 1 or x > 15 or y < 1 or y > 15:
                print("The coordinate is out of range, please try again.")
            elif board[x-1][y-1] != 0:
                print("The coordinate has been occupied, please try again.")
            else:
                board[x-1][y-1] = player
                check_win(player)
                return
        except:
            print("Invalid input, please try again.")

def check_win(player):
    directions = [(0, 1), (1, 0), (1, 1), (-1, 1)]
    for i in range(15):
        for j in range(15):
            if board[i][j] == player:
                for d in directions:
                    x, y = i, j
                    count = 1
                    while count < 5:
                        x += d[0]
                        y += d[1]
                        if x < 0 or x >= 15 or y < 0 or y >= 15 or board[x][y] != player:
                            break
                        count += 1
                    if count == 5:
                        print("Player %s wins!" % player)
                        exit()

def main():
    player = 1
    while True:
        draw_board()
        player_move(player)
        player = 3 - player

if __name__ == "__main__":
    main()