重置tic tac toe板的问题- Python tkinter

import tkinter as tk

# 游戏板的状态
board = [[0, 0, 0],
         [0, 0, 0],
         [0, 0, 0]]

# 当前玩家
current_player = 1

# 游戏是否结束
game_over = False

# 创建主窗口
root = tk.Tk()

# 创建Canvas组件
canvas = tk.Canvas(root, width=300, height=300)
canvas.pack()

def reset_board():
    global board, current_player, game_over
    # 重置游戏板的状态
    board = [[0, 0, 0],
             [0, 0, 0],
             [0, 0, 0]]
    # 清空Canvas组件中的图形
    canvas.delete("all")
    # 重新绘制游戏板的网格
    for i in range(1, 3):
        canvas.create_line(0, i * 100, 300, i * 100)
        canvas.create_line(i * 100, 0, i * 100, 300)
    # 更新游戏状态
    current_player = 1
    game_over = False

# 创建重置按钮
reset_button = tk.Button(root, text="Reset", command=reset_board)
reset_button.pack()

# 绘制游戏板的网格
for i in range(1, 3):
    canvas.create_line(0, i * 100, 300, i * 100)
    canvas.create_line(i * 100, 0, i * 100, 300)

# 运行主循环
root.mainloop()