Tic Tac Toe in python - Just for fun

The other day, I was looking for some GNU/Linux administration reference, I ended up viewing a "tic tac toe" program in Ruby at a Linux admin's blog.

He wrote that in ruby and took him 90mins. That was written using class.

But "Zen of Python in mind", I wrote my own version without class.

I prefer this way (sparse is better than dense), and I enjoy Python more when, I think of my Java days. 

I haven't read ruby code before hand so, I did not wrote a clone of ruby code.

And this took me around 40min. Because, I realized some missing features only when I played it several times.

Then only I added those.

Specifically, drawing complete board after someone wins and stopping the game when all fields are filled out.

	#! /usr/bin/env python
	# All right reserved. Distributed Under BSD Lisence
	__author__="Arun.K.R <the1.arun@gmail.com>"
	__date__ ="$May 11, 2011 6:23:17 PM$"
	import os, time
	from random import choice
	WIDTH = 3
	BOARD = [str(i+1) for i in range(WIDTH*WIDTH)]
	USERS = {True:'X', False:'O'}
	def check_for_win(player, position, marked):
	row=(position-1)/WIDTH
	#horizontal equality test
	if len(filter(marked, BOARD[row*WIDTH: row*WIDTH+WIDTH])) == WIDTH:
	game_over(player)
	#vertical equality test
	if len(filter(marked, [BOARD[itm]
	for itm in range((position-1) % WIDTH, WIDTH*WIDTH, WIDTH)])) == WIDTH:
	game_over(player)
	#diagonal (forward slash) test
	if len(filter(marked, [BOARD[itm]
	for itm in range(0, WIDTH*WIDTH, WIDTH+1)])) == WIDTH:
	game_over(player)
	#diagonal (backward slash) test
	if len(filter(marked, [BOARD[itm]
	for itm in range(WIDTH-1, WIDTH*WIDTH, WIDTH-1)[:-1]])) == WIDTH:
	game_over(player)
	def check_for_tie():
	if len(filter((lambda x: x not in ['X', 'O']), BOARD)) == 0:
	draw(ask=False)
	print "\n", "Game is in tie!!!"
	exit()
	def ask_input(player):
	try:
	print "Player " + USERS[player] + "'s turn ->",
	pos = int(raw_input("Enter a number from board: "))
	assert pos>0 and pos<=WIDTH*WIDTH
	except Exception:
	print "Enter a valied number in the board!"
	time.sleep(1)
	draw(player)
	else:
	play(pos, player)
	def draw(player=choice([True, False]), ask=True):
	os.system('clear')
	for i in range(WIDTH):
	print ' | '.join(BOARD[i*WIDTH:i*WIDTH+WIDTH])
	print '-'*(WIDTH * WIDTH)
	if ask:
	ask_input(player)
	def play(position, player):
	if BOARD[position-1] == str(position):
	BOARD[position-1] = USERS[player]
	else:
	draw(player)
	#check for win
	check_for_win(player, position, marked=(lambda x: x==USERS[player]))
	#check for draw
	check_for_tie()
	#switch player (simple LOGIC ANDing)
	draw(not player)
	def game_over(player):
	draw(ask=False)
	print "\n", "Player " + USERS[player] + " WON!!!"
	exit()
	if __name__ == "__main__":
	draw()

view raw tictactoe.py hosted with ❤ by GitHub

I'll not say, the program is beautiful and very readable.

However, it's good enough for playing with it.