嘿，我如何为我在python中用tkinter编写的石头，纸，剪刀写规则？

from tkinter import *
import random

window = Tk()
window.title("石头，纸，剪刀游戏")

def play_game(player_choice):
    choices = ["石头", "纸", "剪刀"]
    computer_choice = random.choice(choices)

    if player_choice == computer_choice:
        result = "平局"
    elif (player_choice == "石头" and computer_choice == "剪刀") or (player_choice == "纸" and computer_choice == "石头") or (player_choice == "剪刀" and computer_choice == "纸"):
        result = "你赢了！"
    else:
        result = "你输了！"

    result_label.config(text="你选择了：" + player_choice + "\n电脑选择了：" + computer_choice + "\n结果：" + result)

rock_button = Button(window, text="石头", command=lambda: play_game("石头"))
rock_button.pack()

paper_button = Button(window, text="纸", command=lambda: play_game("纸"))
paper_button.pack()

scissors_button = Button(window, text="剪刀", command=lambda: play_game("剪刀"))
scissors_button.pack()

result_label = Label(window, text="")
result_label.pack()

window.mainloop()