arth3mis

f, player = [[0,0,0], [0,0,0], [0,0,0]], 0  # playing field; player turn indicator
while True:                                 # game loop
    inp = str.split(input("\nPlayer " + str(player+1) + " (format 'x y'; range 0-2): ").strip(), " ")  # placing choice
    if f[int(inp[0])][2-int(inp[1])] == 0:                        # chosen field must be empty
        f[int(inp[0])][2-int(inp[1])] = 1 if player == 0 else -1  # player 2 gets -1 value for easier win checking
        player = 1 - player                                       # switch player turns for next round
    w = [0,0,0, 0,0,0, 0,0]                                       # if a player has won, lines add up to 3 or -3
    for i in range(3):                                            # loop for printing the playing field & win checking
        for j in range(3):
            print(2 if f[j][i] == -1 else f[j][i], "\n" if j == 2 else "", sep="  ", end="")  # field display