tictactoe.py

import tkinter as tk 
from tkinter import messagebox

def check_winner():
    for combo in[(0,1,2),(3,4,5),(6,7,8),(0,3,6)(1,4,7)(2,5,8),(0,4,8),(2,4,6)]:
        if buttons[combo[0]]["text"]==buttons[combo[1]]["text"]==buttons[combo[2]]["text"] !="":
            buttons[combo[0]].config(bg="green")
            buttons[combo[1]].config(bg="green")
            buttons[combo[2]].config(bg="green")
            messagebox.showinfo("Tic -Tac -Toe",f"Player {buttons[combo[0]]['text']} Wins!")
            root.quit()

def button_click(index):
    if buttons[index]["text"]=="" and not winner:
        buttons[index]["text"]= current_player
        check_winner()
        toggle_player()

def toggle_player():
    global current_player
    current_player = "x" if current_player == "O" else "O"
    label.config(text=f"Player {current_player}'s turn")

root = tk.Tk()
root.title("Tic-Tac-Toe")

buttons =[tk.Button(root,text="",font=("normal" ,25),width=6,height=2,command=lambda i=i:button_click(i))for i in range(9)]

for i,button in enumerate(buttons):
    button.grid(row=1 //3, column =i%3)

current_player="X"
winner = False
label = tk.Label(root, text=f"Player {current_player}'s turn",font=("normal",16))
label.grid(row=3,column=0,columnspan=3)

root.mainloop()