score = 0
value = {'2', '3', '4', '5', '6', '7', '8', '9', '10', 'JACK', 'QUEEN', 'KING', 'ACE'}
cards = []
for card in value:
    if score <= 21:
        if 0 < len(card) < 2:
            score += int(card)
            cards.append(card)
        else:
            score += 10
            cards.append(card)
    if score > 21:
        score -= score - 1