class Constants:
    EMPTY_SLOT = " "
    TOKEN_1 = "X"
    TOKEN_2 = "O"
    NUM_COLS = 7
    NUM_ROWS = 6
    ALPHA = float("-inf")
    BETA = float("inf")

    # default name
    COMPUTER_NAME = "computer"
    PLAYER_1_NAME = "p1"
    PLAYER_2_NAME = "p2"
    AI_1_NAME = "SIRI"
    AI_2_NAME = "CORTANA"

    # difficulty
    MAX_DIFFICULTY = -1
    HARD = 4
    NORMAL = 3
    EASY = 2

