Using two functions to shuffle a deck of cards

[bwe587]

First, I would like to say that I'm happy to be apart of the community . I'm University student, that have recently been having trouble with my program for my assignment. I have spent hours on this without much success. The program is suppose to include two functions, one the defines a function that creates a deck, and another that defines a function that shuffles the deck of cards. I am not allowed to use the built in python function to shuffle the deck of cards. My code is below:

import random
import math

def createDeck():
    spades = ["2s", "3s", "4s", "5s", "6s", "7s", "8s", "9s", "Ts", "Js", "Qs", "Ks", "As"]
    clubs = ["2c", "3c", "4c", "5c", "6c", "7c", "8c", "9c", "Tc", "Jc", "Qc", "Kc", "Ac"]
    diamonds = ["2d", "3d", "4d", "5d", "6d", "7d", "8d", "9d", "Td", "Jd", "Qd", "Kd", "Ad"]
    hearts = ["2h", "3h", "4h", "5h", "6h", "7h", "8h", "9h", "Th", "Jh", "Qh", "Kh", "Ah"]
    deck = spades + clubs + diamonds + hearts
    print(deck)
    return deck

def shuffleDeck(deck):
    amnt_to_shuffle = len(deck) 
    while amnt_to_shuffle > 1: 
             i = int(math.floor(random() * amnt_to_shuffle)) 
             amnt_to_shuffle -= 1 
             deck[i], deck[amnt_to_shuffle] = deck[amnt_to_shuffle], deck[i]

def main():
    shuffleDeck(createDeck())
    return print(shuffleDeck(createDeck()))

---

My createDeck function works find, but can't seem to pass the deck through my shuffleDeck() to get it to shuffle.

[Mekire]

The error in your program is from writing random instead of random.random, however, I think random.randrange(52) is more intuitive regardless.

import random
import itertools


VALUES = "23456789TJQKA"
SUITS = "scdh"


def createDeck():
    return ["".join(card) for card in itertools.product(VALUES, SUITS)]
    
 
def shuffleDeck(deck):
    for i, card in enumerate(deck):
        insert_at = random.randrange(52)
        deck[i], deck[insert_at] = deck[insert_at], deck[i]


def main():
    deck = createDeck()
    print("Before:\n{}".format(deck))
    shuffleDeck(deck)
    print("\nAfter:\n{}".format(deck))


if __name__ == "__main__":
    main()

[bwe587]

Thank you for taking your time to help!

[snippsat]

There is method in random module that is almost named for a deck of card shuffle.

>>> from random import shuffle

>>> deck = [rank + suit for rank in "23456789TJQKA" for suit in "scdh"]
>>> shuffle(deck)
>>> # Deal 5 card
>>> deck[:5]
['4s', '7h', 'Qc', 'Qs', '5c']

[Mekire]

There is method in random module that is almost named for a deck of card shuffle.

Yes, he was specifically told he couldn't use it.

 I am not allowed to use the built in python function to shuffle the deck of cards. 

[wavic]

There is another random method which can do it - random.sample(sequence, number_of_samples). If you're allowed to use it. Are you not to for python.shuffle only?

[Mekire]

There is another random method which can do it - random.sample(sequence, number_of_samples). If you're allowed to use it. Are you not to for python.shuffle only?

Well I'd say it still obviously goes against the goal of the assignment.  But who knows; the teacher might find it clever enough to allow it.

[wavic]

It's not clear whether restriction is for random.shuffle() only or not