Playing Tic Tac Toe game in childhood was one of our best time pass task. It was so much funny. In childhood, we play it on paper but today we will build this game and will play on computer. So let’s start Python Tic Tac Toe Using Artificial Intelligence tutorial. In this tutorial you will learn to build a Tic Tac Toe game using AI(Artificial Intelligence).
Build Python Tic Tac Toe Using AI
Tic Tac Game Introduction
The first thing we need to know is the basic idea of this game. So read following steps carefully.
- It consists of a board that have 9 cells with 3×3 (row x column).
- It is a two player game in which each player assigned with a marker symbol (X or O).
- During the first turn, the player mark the symbol X (Marker symbol corresponding to the player) to a cell among the available cells, and the second player will mark O (Second player’s symbol) to a cell among the available cells.
- The game continues until it reaches either one of the conditions : When one column, row or diagonal has X, The player assigned with X wins else if this state arrived for O, the player O wins.
- If the board contains no free cell left and none of the above conditions arrived, the Game ends with a Draw.
Goals In Writing Code
Now we will see what are our goal during writing code for Tic Tac Toe game.
- We will write a program for Human-Computer player game such that it can played between human and a computer.
- The most important thing to be noted here that we use Artificial Intelligence in this game.
So now let’s start building this very much interesting game.
Python Tic Tac Toe Using Artificial Intelligence – Getting Started
Creating Board
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import os import time import random # Define the board board = ["", " ", " ", " ", " ", " ", " ", " ", " ", " "] # Print the header def print_header(): print( """ _____ _ ____ _____ ____ ____ _____ ____ _____ /__ __\/ \/ _\ /__ __\/ _ \/ _\ /__ __\/ _ \/ __/ / \ | || / _____ / \ | / \|| / _____ / \ | / \|| \ | | | || \_\____\| | | |-||| \_\____\| | | \_/|| /_ \_/ \_/\____/ \_/ \_/ \|\____/ \_/ \____/\____\ """) # Define the print_board function def print_board(): print(" | | ") print(" " + board[1] + " | " + board[2] + " | " + board[3] + " ") print(" | | ") print("---|---|---") print(" | | ") print(" " + board[4] + " | " + board[5] + " | " + board[6] + " ") print(" | | ") print("---|---|---") print(" | | ") print(" " + board[7] + " | " + board[8] + " | " + board[9] + " ") print(" | | ") while True: os.system("cls") print_header() print_board() # Get Player X Input choice = input("Please choose an empty space for X. ") choice = int(choice) # Check to see if the space is empty first if board[choice] == " ": board[choice] = "X" else: print("Sorry, that space is not empty!") time.sleep(1) |
Creating Game AI
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def get_computer_move(board, player): #if the center square is empty choose that if board[5] == " ": return 5 while True: move = random.randint(1,9) #if the move is blank, go ahead and return, otherwise try again if board[move] == " ": return move break return 5 |
Check For Player Win
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def is_winner(board, player): if (board[1] == player and board[2] == player and board[3] == player) or \ (board[4] == player and board[5] == player and board[6] == player) or \ (board[7] == player and board[8] == player and board[9] == player) or \ (board[1] == player and board[4] == player and board[7] == player) or \ (board[2] == player and board[5] == player and board[8] == player) or \ (board[3] == player and board[6] == player and board[9] == player) or \ (board[1] == player and board[5] == player and board[9] == player) or \ (board[3] == player and board[5] == player and board[7] == player): return True else: return False def is_board_full(board): if " " in board: return False else: return True # Check for X win if is_winner(board, "X"): os.system("cls") print_header() print_board() print("X wins! Congratulations") break os.system("cls") # print_header() print_board() # Check for a tie (is the board full) # If the board is full, do something if is_board_full(board): print("Tie!") break # Get Player O Input choice = get_computer_move(board, "O") # Check to see if the space is empty first if board[choice] == " ": board[choice] = "O" else: print "Sorry, that space is not empty!" time.sleep(1) # Check for O win if is_winner(board, "O"): os.system("cls") print_header() print_board() print("O wins! Congratulations") break # Check for a tie (is the board full) # If the board is full, do something if is_board_full(board): print("Tie!") break |
Python Tic Tac Toe Using AI – Complete Code
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# Import import os import time import random # Define the board board = ["", " ", " ", " ", " ", " ", " ", " ", " ", " "] # Print the header def print_header(): print( """ _____ _ ____ _____ ____ ____ _____ ____ _____ /__ __\/ \/ _\ /__ __\/ _ \/ _\ /__ __\/ _ \/ __/ / \ | || / _____ / \ | / \|| / _____ / \ | / \|| \ | | | || \_\____\| | | |-||| \_\____\| | | \_/|| /_ \_/ \_/\____/ \_/ \_/ \|\____/ \_/ \____/\____\ """) # Define the print_board function def print_board(): print(" | | ") print(" " + board[1] + " | " + board[2] + " | " + board[3] + " ") print(" | | ") print("---|---|---") print(" | | ") print(" " + board[4] + " | " + board[5] + " | " + board[6] + " ") print(" | | ") print("---|---|---") print(" | | ") print(" " + board[7] + " | " + board[8] + " | " + board[9] + " ") print(" | | ") def is_winner(board, player): if (board[1] == player and board[2] == player and board[3] == player) or \ (board[4] == player and board[5] == player and board[6] == player) or \ (board[7] == player and board[8] == player and board[9] == player) or \ (board[1] == player and board[4] == player and board[7] == player) or \ (board[2] == player and board[5] == player and board[8] == player) or \ (board[3] == player and board[6] == player and board[9] == player) or \ (board[1] == player and board[5] == player and board[9] == player) or \ (board[3] == player and board[5] == player and board[7] == player): return True else: return False def is_board_full(board): if " " in board: return False else: return True def get_computer_move(board, player): # if the center square is empty choose that if board[5] == " ": return 5 while True: move = random.randint(1, 9) # if the move is blank, go ahead and return, otherwise try again if board[move] == " ": return move break return 5 while True: os.system("cls") print_header() print_board() # Get Player X Input choice = input("Please choose an empty space for X. ") choice = int(choice) # Check to see if the space is empty first if board[choice] == " ": board[choice] = "X" else: print("Sorry, that space is not empty!") time.sleep(1) # Check for X win if is_winner(board, "X"): os.system("cls") print_header() print_board() print("X wins! Congratulations") break os.system("cls") # print_header() print_board() # Check for a tie (is the board full) # If the board is full, do something if is_board_full(board): print("Tie!") break # Get Player O Input choice = get_computer_move(board, "O") # Check to see if the space is empty first if board[choice] == " ": board[choice] = "O" else: print "Sorry, that space is not empty!" time.sleep(1) # Check for O win if is_winner(board, "O"): os.system("cls") print_header() print_board() print("O wins! Congratulations") break # Check for a tie (is the board full) # If the board is full, do something if is_board_full(board): print("Tie!") break |
Congratulations, Tic-Tac-Toe is completed successfully and now its time to enjoy Tic-Tac-Toe game.
So, friends this is the complete Python Tic Tac Toe Using Artificial Intelligence tutorial.As a result , i hope this will definitely help you to build Tic Tac Toe very easily. So, share this post as much as possible. And if you have any query then ask in comment section. Thank you.
Also Check : Python Number Guessing Game – Implement Number Guessing Game With Python