tictactoe.py

# Tic-Tac-Toe Program using
# random number in Python
  
# importing all necessary libraries
import numpy as np
import random
from time import sleep
  
# Creates an empty board
def create_board():
    return(np.array([[0, 0, 0],
                     [0, 0, 0],
                     [0, 0, 0]]))
  
# Check for empty places on board
def possibilities(board):
    l = []
      
    for i in range(len(board)):
        for j in range(len(board)):
              
            if board[i][j] == 0:
                l.append((i, j))
    return(l)
  
# Select a random place for the player
def random_place(board, player):
    selection = possibilities(board)
    current_loc = random.choice(selection)
    board[current_loc] = player
    return(board)
  
# Checks whether the player has three 
# of their marks in a horizontal row
def row_win(board, player):
    for x in range(len(board)):
        win = True
          
        for y in range(len(board)):
            if board[x, y] != player:
                win = False
                continue
                  
        if win == True:
            return(win)
    return(win)
  
# Checks whether the player has three
# of their marks in a vertical row
def col_win(board, player):
    for x in range(len(board)):
        win = True
          
        for y in range(len(board)):
            if board[y][x] != player:
                win = False
                continue
                  
        if win == True:
            return(win)
    return(win)
  
# Checks whether the player has three
# of their marks in a diagonal row
def diag_win(board, player):
    win = True
    y = 0
    for x in range(len(board)):
        if board[x, x] != player:
            win = False
    if win:
        return win
    win = True
    if win:
        for x in range(len(board)):
            y = len(board) - 1 - x
            if board[x, y] != player:
                win = False
    return win
  
# Evaluates whether there is
# a winner or a tie 
def evaluate(board):
    winner = 0
      
    for player in [1, 2]:
        if (row_win(board, player) or
            col_win(board,player) or 
            diag_win(board,player)):
                 
            winner = player
              
    if np.all(board != 0) and winner == 0:
        winner = -1
    return winner
  
# Main function to start the game
def play_game():
    board, winner, counter = create_board(), 0, 1
    print(board)
    sleep(2)
      
    while winner == 0:
        for player in [1, 2]:
            board = random_place(board, player)
            print("Board after " + str(counter) + " move")
            print(board)
            sleep(2)
            counter += 1
            winner = evaluate(board)
            if winner != 0:
                break
    return(winner)
  
# Driver Code
print("Winner is: " + str(play_game()))