A quick implementation of Mastermind

mastermind.py

from numpy import random as npr

SECRET = [npr.randint(1,7) for _ in range(4)]
TURN = 0
guesses = []

def tryseq(sequence):
    """
    [2, 2, 5, 4] for example
    :type sequence: list
    """
    global TURN
    TURN += 1
    if TURN > 12:
        return
    guesses.append(sequence)

    black=0
    white=0
    board = SECRET.copy()

    for i in range(len(sequence)):
        if sequence[i] == board[i]:
            black += 1
            board[i] = -1

    for i in range(len(sequence)):
        if sequence[i] in board:
            white += 1
            board.remove(sequence[i])

    return black, white


print("-==# MASTERMIND PYTHON #==-")
print("Input a sequence of four numbers (1-6) until you win or lose ('1234', '3321', etc.)")

try:
    while TURN < 12:
        guess = list(input("Sequence to try: "))
        try:
            if len(guess) != 4:
                raise ValueError
            guess = [int(v) for v in guess if 1 <= int(v) <= 6]

            b, w = tryseq(guess)
            print("\x1b[1ATURN {}:".format(TURN), guess, "|", (b, w))

            if b == 4:
                print("VICTORY")
                break
            elif TURN >= 12:
                print("FAILURE")
                break
        except:
            print("It must be 4 numbers!")
except (EOFError, KeyboardInterrupt):
    print("QUIT")