let's play tic tac toe!

tictactoe.py

def play_tic_tac_toe():
    print("""Let's play tictactoe! The board looks like
           #     1   2   3
           # A   A1  A2  A3
           # B   B1  B2  B3
           # C   C1  C2  C3""")
    
    board = [('A', 1), ('A', 2), ('A', 3),
             ('B', 1), ('B', 2), ('B', 3),
             ('C', 1), ('C', 2), ('C', 3)]

    moves = {1:[], 2:[]}

    is_game_over = False
    
    blank_board = """
           #     1   2   3
           # A   {A1}   {A2}   {A3}
           # B   {B1}   {B2}   {B3}
           # C   {C1}   {C2}   {C3}"""
    
    board_data = {'A1':'_','A2':'_','A3':'_','B1':'_','B2':'_','B3':'_','C1':'_','C2':'_','C3':'_'}
    
    
    def end_game(winning_player):
        print('Player {} wins!'.format(winning_player))
        return True

    while not is_game_over:
        for i in range(len(board)): # i keeps track of the order of the players, and the number of moves
            valid_move = None
            while not valid_move:
                move = input('Player {x}, make a turn (ie. A1): '.format(x=i%2+1))
                player_move = move
                if len(move) == 2:
                    move = (move[0], int(move[1]))
                if move in board:
                    valid_move = True
                    break
                elif move in [move for players in moves.values() for move in players]:
                    print('This move was already taken. Try again.')
                else:
                    print('Hey! Not a valid move, choose again. Format answer as row letter and column number (ie. C2)') 
            
            # remove the move as a future option to play
            board.remove(move)
            board_data[player_move] = 'O' if i%2 else 'X'
            print(blank_board.format(**board_data))

            # add the move to the list of player's moves
            moves[i%2+1].append(move)

            # all winning scenarios
            winning_scenarios = [[('A',1), ('B',2), ('C',3)],
                                 [('A',3), ('B',2), ('C',1)],
                                 [('A',1), ('A',2), ('A',3)],
                                 [('B',1), ('B',2), ('B',3)],
                                 [('C',1), ('C',2), ('C',3)],
                                 [('A',1), ('B',1), ('C',1)],
                                 [('A',2), ('B',2), ('C',2)],
                                 [('A',3), ('B',3), ('C',3)]]

            # check for any winning moves
            if moves[i%2+1]:
                if any([set(win).issubset(set(moves[i%2+1])) for win in winning_scenarios]):
                    is_game_over = end_game(i%2+1)
                    break
        if not is_game_over:
            print('Draw!')
        break