game-example.py

from __future__ import print_function

from math import ceil, log

print("\n Welcome to Up-To-9-Cards Game!")
print("\n================================\n")


def get_cards():
    valid_count = 0
    numbers = []

    while valid_count < 9:
        print('Please enter a card or enter -1 to end: ', end='')
        coded_number = int(raw_input())
        if coded_number == -1:
            return numbers
        elif coded_number < 0 or coded_number > 51:
            print("Not a valid card entry.")
        else:
            numbers.append(coded_number)
            valid_count += 1
    return numbers


def get_suit_number(coded_number):
    return coded_number % 4


def get_suit_string(coded_number):
    suit_number = get_suit_number(coded_number)
    if suit_number == 0:
        return "Clubs"
    elif suit_number == 1:
        return "Spades"
    elif suit_number == 2:
        return "Diamonds"
    elif suit_number == 3:
        return "Hearts"


def get_card_value(coded_number):
    return coded_number / 4 + 1


def next_highest_power_of_two(value):
    return pow(2, ceil(log(value, 2)))


def simple_sum_cards(cards):
    return sum((get_card_value(card) - get_suit_number(card)) for card in cards)


def has_three_or_more_non_number_cards(cards):
    return len([card for card in cards if (get_card_value(card) >= 11 or get_card_value(card) == 1)]) >= 3


def is_prime(n):
    if n == 2 or n == 3:
        return True
    if n % 2 == 0 or n < 2:
        return False
    for i in range(3, int(n ** 0.5) + 1, 2):
        if n % i == 0:
            return False

    return True


def calculate_hand_value(cards):
    base_score = simple_sum_cards(cards)
    total_value = base_score

    if has_three_or_more_non_number_cards(cards):
        total_value = total_value * total_value + 7
    if is_prime(total_value):
        total_value += next_highest_power_of_two(total_value)
    return total_value


def display_cards(cards):
    print("Your hand is:")
    for card in cards:
        print("        {} of {}".format(get_card_value(card), get_suit_string(card)))

    hand_value = int(calculate_hand_value(cards))
    print("\nThe Total value of your hand is:\n{} points".format(hand_value))
    
    
display_cards(get_cards())

print("\n\nDone!\n")