Blackjack decision-making strategy ref https://www.kaggle.com/kyanny/exercise-booleans-and-conditionals/edit

q7.py

def should_hit(dealer_total, player_total, player_low_aces, player_high_aces):
    """Return True if the player should hit (request another card) given the current game
    state, or False if the player should stay.
    When calculating a hand's total value, we count aces as "high" (with value 11) if doing so
    doesn't bring the total above 21, otherwise we count them as low (with value 1). 
    For example, if the player's hand is {A, A, A, 7}, we will count it as 11 + 1 + 1 + 7,
    and therefore set player_total=20, player_low_aces=2, player_high_aces=1.
    """
    
    if dealer_total >= player_total or player_total <= 12:
        if player_high_aces == 0:
            if player_low_aces <= 0:
                if player_total - ((player_low_aces * 1) + (player_high_aces * 11)) > 6:
                    return True
    
    return False

q7.simulate(n_games=50000)

# win rate avg 41.2% ~ 41.3%
# win rate highest 41.7%