A game of Tic Tac Toe for two human people

TicTacToe.py

# Feb 2016
# Michelle Ye
# RC Int #2


class Board:

    values = [" "] * 9
    keep_playing = 1

    def __init__(self, symb1='x', symb2='o'):
        self.symbol_map = {0: symb1, 1: symb2}

    def __repr__(self):
        my_str = "\nBoard:               Positions:\n"
        for i in range(2, -1, -1):
            my_str += "[%s] [%s] [%s]" % (self.values[i*3], self.values[i*3+1], self.values[i*3+2])
            my_str += "         [%d] [%d] [%d]\n" % (i*3+1, i*3+2, i*3+3)
        return my_str

    def enter_turn(self, position, playerID):
        symb = self.symbol_map[playerID]
        if self.values[position-1] ==  " ":
            self.values[position-1] = symb
            print(self)
            return True
        else:
            return "Taken_Error"

    def check_if_winner(self, playerID):
        v = self.symbol_map[playerID]

        for i in range(3):
            if v in self.values[i*3] and v in self.values[i*3+1] and v in self.values[i*3+2]:
                return self.announce_winner(playerID, "horizontally")

            elif v in self.values[i] and v in self.values[i+3] and v in self.values[i+6]:
                return self.announce_winner(playerID, "vertically")

        if v in self.values[0] and v in self.values[4] and v in self.values[8] or \
            v in self.values[2] and v in self.values[4] and v in self.values[6]:
                return self.announce_winner(playerID, "diagonally")

        return 1    # self.keep_playing = 1

    def announce_winner(self, playerID, win_type):
        print ("\nPlayer %s wins %s!" % (self.symbol_map[playerID], win_type))
        return 0    # self.keep_playing = 0


def start_a_game():
    #start = input("Press Enter to start a new game: ")
    start=""
    if start == "":
        print("\nNew game!")
        board = Board()
        print(board)
        return board
    else:
        print("..awkward")


def a_turn(board, playerID):
    while 1:
        try:
            go_here = int( input("Player %s's turn. Enter a number: " %(board.symbol_map[playerID])))
            if go_here in range(1, 10):
                return board.enter_turn(go_here, playerID)
            print("That's not on the board! Please enter an integer between 1 and 9. \nStill ",end="")
        except ValueError:
            print("Please enter an integer between 1 and 9. \nStill ",end="")


# main loop
def A_Game():
    board = start_a_game()
    playerID = 0
    turn_count = 1
    while board.keep_playing:

        turn_success = False
        while turn_success is not True:
            turn_success = a_turn(board, playerID)
            if turn_success == "Taken_Error":
                print("Position already taken. Pick an empty position.")

        board.keep_playing = board.check_if_winner(playerID)

        if turn_count == 9 and board.keep_playing:
            print("\nBoard full. No one is a winner.")
            exit()
        turn_count += 1

        playerID = not playerID


A_Game()