Cards game

cards.py

def who_wins(cards_player1, cards_player2):
    ranking = {
        '2': 2,
        '3': 3,
        '4': 4,
        '5': 5,
        '6': 6,
        '7': 7,
        '8': 8,
        '9': 9,
        '10': 10,
        'J': 11,
        'Q': 12,
        'K': 13,
        'A': 14,
        '1': 14
    }
    if len(cards_player1) != len(cards_player2) or \
            len(cards_player1) == 0 or \
            len(cards_player2) == 0:
        raise ValueError('The number of cards must be equal for both players')
    score_player1 = 0
    score_player2 = 0
    number_of_rounds = len(cards_player1)
    for each_round in range(number_of_rounds):
        if ranking[cards_player1[each_round]] > ranking[cards_player2[each_round]]:
            score_player1 += 1
        elif ranking[cards_player1[each_round]] < ranking[cards_player2[each_round]]:
            score_player2 += 1
    return format_final_score(score_player1, score_player2)


def format_final_score(score_player1, score_player2):
    if score_player1 > score_player2:
        return f"Player1 wins {score_player1} to {score_player2}"
    elif score_player1 < score_player2:
        return f"Player2 wins {score_player2} to {score_player1}"
    else:
        return "Tie"