Class based Tic-Tac-Toe game only in 77 Lines of Python Code

Hi,

In the last post, I created a Tic-Tac-Toe game based upon the functions and using Tkinter. It was 95 lines of code, please do check it by clicking here.

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Tic-Tac-Toe Game only in 95 lines of Python Code

Now in this post, I am showing you another code, which uses Classes in Python to create the Tic-Tac-Toe game only in 77 lines of code. It runs in terminal, and doesn’t have a graphical user interface(GUI.) It uses ‘os’ Python package to clear the terminal window.

import os
os.system("clear")

class Board():
    def __init__(self):
       self.cells = ["", "", "", "", "", "", "", "", "", ""]

    def display(self):
        print(" %s | %s | %s " %(self.cells[1], self.cells[2], self.cells[3]))
        print('__________')
        print(" %s | %s | %s " % (self.cells[4], self.cells[5], self.cells[6]))
        print('__________')
        print(" %s | %s | %s " % (self.cells[7], self.cells[8], self.cells[9]))

    def update_cell(self, cell_no, player):
        if self.cells[cell_no] == "":
            self.cells[cell_no] = player

    def is_winner(self, player):
        for i in range(10):
                    if i == 1 or i == 4 or i == 7:
                        if self.cells[i] == player and self.cells[i+1] == player and self.cells[i+2] == player:
                            return True

                    if i == 1 or i == 2 or i == 3:
                        if self.cells[i] == player and self.cells[i+3] == player and self.cells[i+6] == player:
                            return True
                    if i == 1:
                         if self.cells[i] == player and self.cells[i+4] == player and self.cells[i+8] == player:
                            return True
                    if i == 3:
                        if self.cells[i] == player and self.cells[i+2] == player and self.cells[i+4] == player:
                            return True
    def reset(self):
             self.cells = ["", "", "", "", "", "", "", "", "", ""]

board = Board()

def print_header():
    print("welcome to Tic-Tac-Toe \n")

def refresh_screen():
    #clear the screen
    os.system("clear")
    print_header()
    board.display()


while True:
    refresh_screen()

    #get X input
    x_choice = int(input("\n X) Please choose 1-9.>"))
    #Update board
    board.update_cell(x_choice, "X")

    # Refresh Screen
    refresh_screen()
    if board.is_winner("X"):
        print("\n X Wins! \n")
        play_again = input("Would you like to play again? (Y/N) > ").upper()
        if play_again == "Y":
            board.reset()
            continue
        else:
            break
    # get o input
    o_choice = int(input("\n O) Please choose 1-9.>"))
    # Update board
    board.update_cell(o_choice, "O")
    refresh_screen()
    if board.is_winner("O"):
       print("\n O Wins! \n")
       play_again = input("Would you like to play again? (Y/N) > ").upper()
       if play_again == "Y":
           continue
       else:
           break