hearts_kitty.py

from collections import deque
import random
import os

class Card:
    def __init__(self, suit, val):
        self.suit = suit
        self.value = val

    # good practice is to include repr and str magic methods - that way you can print meaningful info
    def __repr__(self):
        return '<{} {}>'.format(self.value, self.suit)


class Deck:
    def __init__(self):
        # use deque - it's more efficient to pop from left than from a list -> good advice -> learn build in types :)
        self.cards = deque()
        self.build()

    def build(self):
        self.cards.clear()
        for suit in ["Hearts", "Diamonds", "Spades", "Clubs"]:
            for value in range(1, 14):
                self.cards.append(Card(suit, value))
        # need to shuffle in order to have random order of cards
        random.shuffle(self.cards)

    def length(self):
        return len(self.cards)

    def get_card(self):
        return self.cards.popleft()

    def __repr__(self):
        return 'Deck: [{} Cards]'.format(self.length())

NUM_ROUNDS = 1000000
NUM_IN_KITTY = 7

times_found_in_kitty = 0
for i in range(NUM_ROUNDS):
    deck = Deck()
    found_jack_in_kitty = False
    for j in range(NUM_IN_KITTY):
        card = deck.get_card()
        if card.suit == 'Diamonds' and card.value == 11:
            found_jack_in_kitty = True
    if found_jack_in_kitty:
        times_found_in_kitty += 1
    random.seed(os.urandom(50))

probability = (times_found_in_kitty / NUM_ROUNDS) * 100
print('After {} rounds with a {} card kitty, a card was found {}% of the time'.format(NUM_ROUNDS, NUM_IN_KITTY, probability))