HumanvsHuman.py

import numpy as np

game_state = [[' ',' ',' '],
              [' ',' ',' '],
              [' ',' ',' ']]
players = ['X','O']

def play_move(player, block_num):
    if game_state[int((block_num-1)/3)][(block_num-1)%3] is ' ':
        game_state[int((block_num-1)/3)][(block_num-1)%3] = player
    else:
        block_num = int(input("Block is not empty, ya blockhead! Choose again: "))
        play_move(player, block_num)
    
    
def check_current_state(game_state):
    # Check if draw
    draw_flag = 0
    for i in range(3):
        for j in range(3):
            if game_state[i][j] is ' ':
                draw_flag = 1
    if draw_flag is 0:
        return None, "Draw"
    
    # Check horizontals
    if (game_state[0][0] == game_state[0][1] and game_state[0][1] == game_state[0][2] and game_state[0][0] is not ' '):
        return game_state[0][0], "Done"
    if (game_state[1][0] == game_state[1][1] and game_state[1][1] == game_state[1][2] and game_state[1][0] is not ' '):
        return game_state[1][0], "Done"
    if (game_state[2][0] == game_state[2][1] and game_state[2][1] == game_state[2][2] and game_state[2][0] is not ' '):
        return game_state[2][0], "Done"
    
    # Check verticals
    if (game_state[0][0] == game_state[1][0] and game_state[1][0] == game_state[2][0] and game_state[0][0] is not ' '):
        return game_state[0][0], "Done"
    if (game_state[0][1] == game_state[1][1] and game_state[1][1] == game_state[2][1] and game_state[0][1] is not ' '):
        return game_state[0][1], "Done"
    if (game_state[0][2] == game_state[1][2] and game_state[1][2] == game_state[2][2] and game_state[0][2] is not ' '):
        return game_state[0][2], "Done"
    
    # Check diagonals
    if (game_state[0][0] == game_state[1][1] and game_state[1][1] == game_state[2][2] and game_state[0][0] is not ' '):
        return game_state[1][1], "Done"
    if (game_state[2][0] == game_state[1][1] and game_state[1][1] == game_state[0][2] and game_state[2][0] is not ' '):
        return game_state[1][1], "Done"
    
    return None, "Not Done"

def print_board(game_state):
    print('----------------')
    print('| ' + str(game_state[0][0]) + ' || ' + str(game_state[0][1]) + ' || ' + str(game_state[0][2]) + ' |')
    print('----------------')
    print('| ' + str(game_state[1][0]) + ' || ' + str(game_state[1][1]) + ' || ' + str(game_state[1][2]) + ' |')
    print('----------------')
    print('| ' + str(game_state[2][0]) + ' || ' + str(game_state[2][1]) + ' || ' + str(game_state[2][2]) + ' |')
    print('----------------')
    
# PLaying
current_state = "Not Done"
print("New Game!")
print_board(game_state)
player_choice = input("Choose which player goes first - X or O: ")
winner = None
if player_choice == 'X' or player_choice == 'x':
    current_player_idx = 0
else:
    current_player_idx = 1
while current_state == "Not Done":
    block_choice = int(input(str(players[current_player_idx]) + "'s Turn! Choose where to place (1 to 9): "))
    play_move(players[current_player_idx], block_choice)
    print_board(game_state)
    winner, current_state = check_current_state(game_state)
    if winner is not None:
        print(str(winner) + " won!")
    else:
        current_player_idx = (current_player_idx + 1)%2
    
    if current_state is "Draw":
        print("Draw!")