Your understanding of importing modules, using lists and dictionaries and creating objects from a class will be exercised in this lab. Be prepared to use your solution for the “Classes” lab (see...


Your understanding of importing modules, using lists and dictionaries and creating objects from a class will be exercised in this lab.


Be prepared to use your solution for the “Classes” lab (see Blackboard for the link) where you wrote the PlayingCard class.


In this lab, you will have to generate a random list of PlayingCard objects for where the suit and rank combinations of each card are randomly choosen. Using this list of randomly created playing cards, you will use dictionaries and lists to store important data about these playing cards, particularly the frequency distribution of each rank-suit combination you created (e.g. like if 10 queen of hearts cards are generated and counted.)


Thanks to the clearly described interface used to communicate to any PlayingCard object, specifically the get_rank() and get_suit() methods, you can just import your “Classes” lab as a module and use your previously written code!


Note:You’ll definitely need to make sure your solutions work for this lab, and if not, please consult the professor or TAs for assistance, ASAP.




  1. I provide a starter (skeleton) code file for your solution.You are required to use it. Download lab_data_collections.py and complete it with your code.




  2. Your lab assignment requires the use of your solution from the Classes lab. You will import your code as a module and use your PlayingCard class.


    The skeleton code includes the necessary import line, just provide your file by placing a copy of your lab_classes.py file in the same directory as your solution code for this lab.




  3. The docstrings inside this file describe what each function should do.




  4. Replace and complete missing code wherever you see::



    ## REPLACE WITH YOUR CODE.#


    Donot change anything else like function names, parameters or return values. Do not remove the if statements at the start of some functions as they are needed to make sure you are passing the correct values. You will lose points you if you change anything you are not supposed to change.





Output


This is what you should see (your numbers will be different):



Standard deviation for the frequency counts of each rank in suit:

Hearts: 2.3755 cards

Spades: 1.1242 cards

Clubs: 1.4880 cards

Diamonds: 1.5607 cards



Note: All printed stringsmust
match the above output. To otherwise deviate will cause the Gradescope autograder to deduct points.



Skeleton Code


from random import randrange
from lab_classes import PlayingCard
from math import sqrt


suit_size = 13  # Number of cards in a suit.
deck_size = 52  # Number of cards in a deck.
num_cards = 260  # Number of cards to create with random rank & suit values




def make_random_cards():
    """Generate num_cards number of random PlayingCard objects.


    This function will generate num_cards RANDOM playing cards
    using your PlayingCard class. That means you will have to choose a random
    suit and rank for a card num_cards times.


    Printing:
        Nothing


    Positional arguments:
        None


    Returns:
        cards_list -- a list of PlayingCard objects.
    """


    #
    # REPLACE WITH YOUR CODE.
    #


    return cards_list




def freq_count(cards_list):
    """Count every suit-rank combination.


    Returns a dictionary whose keys are the card suit-rank and value is the
    count.


    Printing:
        Nothing


    Positional arguments:
        cards_list -- A list of PlayingCard objects.


    Returns:
        card_freqs -- A dictionary whose keys are the single letter in the set
        'd', 'c', 'h', 's' representing each card suit.  The value for each key
        is a list containing the number of cards at each rank, using the index
        position to represent the rank. For example, {'s': [0, 3, 4, 2, 5]}
        says that the key 's', for 'spades' has three rank 1's (aces), four
        rank 2's (twos), two rank 3's (threes) and 5 rank 4's (fours).  Index
        position 0 is 0 since no cards have a rank 0, so make note.
    """
    # DO NOT REMOVE BELOW
    if type(cards_list) != list or \
            list(filter(lambda x: type(x) != PlayingCard, cards_list)):
        raise TypeError("cards_list is required to be a list of PlayingCard \
                        objects.")
    # DO NOT REMOVE ABOVE


    #
    # REPLACE WITH YOUR CODE.
    #


    return card_freqs


def std_dev(counts):
    """Calculate the standard deviation of a list of numbers.


    Positional arguments:
        counts -- A list of ints representing frequency counts.


    Printing:
        Nothing


    Returns:
        _stdev -- The standard deviation as a single float value.
    """
    # DO NOT REMOVE BELOW
    if type(counts) != list or \
            list(filter(lambda x: type(x) != int, counts)):
        raise TypeError("counts is required to be a list of int values.")
    # DO NOT REMOVE ABOVE


(The image attached has the continued part of the code)





def print_stats (card_freqs):<br>

Extracted text: def print_stats (card_freqs): """Print the final stats of the PlayingCard objects. Positional arguments: card freqs -- A dictionary whose keys are the single letter in the set 'dchs' representing each card suit. The value for each key is a list of numbers where each index position is a card rank, and its value is its card frequency. You will probably want to call th std dev function in somewhere in here. Printing: Prints the statistic for each suit to the screen, for an example output. see assignment page Returns: None II II II # DO NOT REMOVE BELOW if type (card_freqs) != dict or \ list (filter (lambda x: type (card_freqs [x]) != list, card_freqs)): raise TypeError("card_freqs is required to be a dict where each value is a list of ints.") # DO NOT REMOVE ABOVE # REPLACE WITH YOUR CODE. def main (): cards = make random cards () suit_counts = freq_count (cards) print_stats (suit_counts) if name main ": == main()
Jun 11, 2022
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