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Tic Tac Toe Game in Python

🐍 Can be run on Jupyter notebook

#IMPORTING USEFUL LIBRARIES

from IPython.display import clear_output
import random


#DISPLAYING THE TIC TAC TOE

def display_board(board):
    clear_output()
    print(f' {board[7]} | {board[8]} | {board[9]} ')
    print('-----------')
    print(f' {board[4]} | {board[5]} | {board[6]} ')
    print('-----------')
    print(f' {board[1]} | {board[2]} | {board[3]} ')


#GAME BEGINS

def player_input():
    print('NEW GAME | Press 0 to End Game')

#VARIABLE TO STORE THE SPOT PLAYER HAS CHOSEN

    num=0

#VARIABLE TO KEEP A COUNT OF SPOTS FILLED

    count=0

#VARIABLE TO STORE SYMBOL OF PLAYER CURRENTLY PLAYING

    xo='#'

#VARIABLE TO STORE YES OR NO TO PLAY AGAIN

    yn='*'

#RANDOM FIRST TURN OF PLAYERS

    turn=bool(random.getrandbits(1))

#RESETTING BOARD

    test_board = ['#','1','2','3','4','5','6','7','8','9']

#DISPLAYS BOARD

    display_board(test_board)

#STARTS GAME

    while count<9:

#CHECKS IF X HAS ALREADY WON

        if ((test_board[5]=='X' and ((test_board[1]=='X' and test_board[9]=='X') or (test_board[3]=='X' and test_board[7]=='X') or (test_board[2]=='X' and test_board[8]=='X') or (test_board[4]=='X' and test_board[6]=='X'))) or (test_board[1]=='X' and ((test_board[2]=='X' and test_board[3]=='X') or (test_board[4]=='X' and test_board[7]=='X'))) or (test_board[9]=='X' and ((test_board[8]=='X' and test_board[7]=='X') or (test_board[6]=='X' and test_board[3]=='X')))):
            print('X wins')
            yn=input('Want to play again? (Y/N):').upper()
            if yn=='Y':
                player_input()
                break
            else:
                break

#CHECKS IF O HAS ALREADY WON

        elif ((test_board[5]=='O' and ((test_board[1]=='O' and test_board[9]=='O') or (test_board[3]=='O' and test_board[7]=='O') or (test_board[2]=='O' and test_board[8]=='O') or (test_board[4]=='O' and test_board[6]=='O'))) or (test_board[1]=='O' and ((test_board[2]=='O' and test_board[3]=='O') or (test_board[4]=='O' and test_board[7]=='O'))) or (test_board[9]=='O' and ((test_board[8]=='O' and test_board[7]=='O') or (test_board[6]=='O' and test_board[3]=='O')))):
            print('O wins')
            yn=input('Want to play again? (Y/N):').upper()
            if yn=='Y':
                player_input()
                break
            else:
                break

#TAKES THE SPOT A PLAYER CHOOSES

        else:
            if turn:
                num=int(input('Player 1, enter number to place X:'))
                xo='X'
            else:
                num=int(input('Player 2, enter number to place O:'))
                xo='O'

#CHECKS IF SPOT CHOSEN IS CORRECT

            if num<1 or num>9:

#IF PLAYER CHOOSES 0, IT MEANS PLAYER HAS CHOSEN TO QUIT THE GAME

                if num==0:
                    print('Game Over!')
                    break
                else:
                    print('Enter a number between 1 and 9')

#IF ALREADY FILLED SPOT IS CHOSEN AGAIN

            elif test_board[num]=='X' or test_board[num]=='O':
                print('Spot already occupied.')
            else:
                turn=not turn

#FILLS SPOT

                test_board[num]=xo
                display_board(test_board)
                count+=1

#IF ALL 9 SPOTS FILLED, IT SKIPS THE WHILE LOOP AND PRINTS IT'S A TIE

    print('It is a tie.')

#REGAME?

    yn=input('Want to play again? (Y/N):').upper()
    if yn=='Y':
        player_input()

#CALL GAME

player_input()

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