Python Project : TIC TAC TOE Game GUI using Tkinter.

from tkinter import *

window = Tk()

window.title('TIC TAC TOE GAME')

def display_x_or_o(button):

    current_text=button["text"]

    if current_text==" " and not winner:

        if player.get()=="X":

            button["text"]='O'

            button.config(fg="blue")

            player.set("O")

        else:

            button["text"]='X'

            button.config(fg="red")

            player.set("X")

        check_winner()

def clear_board():

    global winner

    for button in [button1, button2, button3, button4, button5, button6, button7, button8, button9]:

        button["text"] = " "

        button.config(bg="SystemButtonFace",state=NORMAL)

    player.set("X")

    winner = False

    winner_label.config(text="")

def check_winner():

    global winner

    if (button1["text"] == button2["text"] == button3["text"] != " ") or (button4["text"] == button5["text"] == button6["text"] != " ") or (button7["text"] == button8["text"] == button9["text"] != " ") or (button1["text"] == button4["text"] == button7["text"] != " ") or (button2["text"] == button5["text"] == button8["text"] != " ") or (button3["text"] == button6["text"] == button9["text"] != " ") or (button1["text"] == button5["text"] == button9["text"] != " ") or (button3["text"] == button5["text"] == button7["text"] != " "):

        winner_label.config(text=f"Player {player.get()} wins!")

        winner=True

        for button in [button1, button2, button3, button4, button5, button6, button7, button8, button9]:

            button.config(state=DISABLED)

player=StringVar()

player.set("X")

winner=False

button1=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button1))

button1.grid(row=0, column=0)

button2=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button2))

button2.grid(row=0, column=1)

button3=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button3))

button3.grid(row=0, column=2)

button4=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button4))

button4.grid(row=1, column=0)

button5=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button5))

button5.grid(row=1, column=1)

button6=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button6))

button6.grid(row=1, column=2)

button7=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button7))

button7.grid(row=2, column=0)

button8=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button8))

button8.grid(row=2, column=1)

button9=Button(window, text=" ",font=("Arial", 20),width=5,height=2,command=lambda: display_x_or_o(button9))

button9.grid(row=2, column=2)

winner_label = Label(window, text="", font=("Arial", 16))

winner_label.grid(row=3, column=0, columnspan=3)

clear_button = Button(window, text="Clear", font=("Arial", 16), width=10, command=clear_board)

clear_button.grid(row=4, column=0, columnspan=3)

window.mainloop()