Cards in python (classes PlayingCard & DeckOfCards) [solved]

[prince99]

i am worlking on the cards class so it can do several things.

My code is as before but need to change the things to solve given problem

Create a new class Deck that represents a pack of 52 cards. The class should support the following methods:
__init__ ( self ) Creates a deck of cards in standard order.
shuffle(self) Randomizes the order of the cards.
dealCard(self) Returns a single card from the top of the deck, and removes the card from the deck.
cardsLeft(self) Returns the number of cards left in the deck.
Test your class by having it deals out a sequence of n cards where n is a number input by the user. The program should either print out the cards, or display them in a window.

The last code was : -

#card.py
import string
n = input("Enter the value: ")
rank_desc = (None, "Ace", "Two", "Three", "Four") # describe each rank in a tuple
suit_desc = {"s":"Spades ", "h":"Hearts ", "c": "Clubs", "d": "Diamonds"} # describe each suit in a dictionary
class PlayingCard:
def __init__ ( self, rank, suit ): # Creates a card.
self.rank = rank
self.suit = suit
def __str__(self): # Returns a string naming the card. For example: 'Ace of Spades'
return "The %s of %s is worth %d in Blackjack" %(rank_desc[self.rank],
suit_desc[self.suit], self.BJValue())
def getRank(self): #Returns the rank of the card.
return self.rank
def getSuit(self): # Returns the suit of the card.
return self.suit
def BJValue(self): # Returns the 'Blackjack value' of the card (Ace;1, Face card:10)
return min(self.rank, 10)

AceOfSpades = PlayingCard(1, 's')
print AceOfSpades
print AceOfSpades.get Rank()

AceOfHearts = PlayingCard(2, 'h')
print AceOfHearts
print AceOfSpades.get Rank()

AceOfClubs = PlayingCard(3, 'c')
print AceOfClubs
print AceOfSpades.get Rank()

AceOfDiamonds = PlayingCard(4, 'd')
print AceOfDiamonds
print AceOfSpades.get Rank()

what should i change in this code to make it possible and solve out the above given problem?

[brokow]

Please repost your message using [code][/code] tags around all code you post.

[prince99]

#card.py
import string
    n = input("Enter the value: ")
rank_desc = (None, "Ace", "Two", "Three", "Four") # describe each rank in a tuple
suit_desc = {"s":"Spades", "h":"Hearts", "c": "Clubs", "d": "Diamonds"} # describe each suit in a dictionary
   class PlayingCard:
           def __init__ ( self, rank, suit ): # Creates a card.
                             self.rank = rank
                             self.suit = suit
          def __str__(self): # Returns a string naming the card. For example: 'Ace of Spades'
        return "The %s of %s is worth %d in Blackjack" %(rank_desc[self.rank],
              suit_desc[self.suit], self.BJValue())
def getRank(self): #Returns the rank of the card.
return self.rank
def getSuit(self): # Returns the suit of the card. 
return self.suit
def BJValue(self): # Returns the 'Blackjack value' of the card (Ace;1, Face card:10) 
return min(self.rank, 10)
 
AceOfSpades = PlayingCard(1, 's')
print AceOfSpades
print AceOfSpades.getRank()
 
AceOfHearts = PlayingCard(2, 'h')
print AceOfHearts
print AceOfSpades.getRank()
 
AceOfClubs = PlayingCard(3, 'c')
print AceOfClubs
print AceOfSpades.getRank()
 
AceOfDiamonds = PlayingCard(4, 'd')
print AceOfDiamonds
print AceOfSpades.getRank()
 

what should i change in this code to make it possible and solve out the above given problem?

[bartonc]

i am worlking on the cards class so it can do several things.

My code is as before but need to change the things to solve given problem

Create a new class Deck that represents a pack of 52 cards. The class should support the following methods:
__init__ ( self ) Creates a deck of cards in standard order.
shuffle(self) Randomizes the order of the cards.
dealCard(self) Returns a single card from the top of the deck, and removes the card from the deck.
cardsLeft(self) Returns the number of cards left in the deck.
Test your class by having it deals out a sequence of n cards where n is a number input by the user. The program should either print out the cards, or display them in a window.

what should i change in this code to make it possible and solve out the above given problem?

First, change the way you post (see below and lots of other places).
Second, give this an honest attempt from the pieces that you have been given already (we really like to see you learning and don't want to think that we are doing all your work for you).
You will need specifications for all 52 cards to give to the:

class DeckOfCard:
    def __init__(self, some_kind_of_data):
        # create deck of cards
 

You already got the shortcut (instead of typing out all 52, spec 13 cards and 4 suits) so finish these:

rank_desc = {"1":"Ace", "2":"Two", "3":"Trey", "4":"Four",
             "5":"Five", "6":"Six", "7":"Seven"}    # describe each rank in a dictionary
suit_desc = {"s":"Spades", "h":"Hearts"}    # describe each suit in a dictionary
 

Then write them to a file with

 
def WriteCardDatabase(filename):
    """"Create a random collection of card specs.
    Dictionaries work great because they are not ordered lists."""
    outputList = []   # an empty list for temporary storage
    for rank, r_desc in rank_desc.items():
        for suit, s_desc in suit_desc.items():
            line  = rank + " " + suit + "\n"
            outputList.append(line)
    outputFile = file(filename, "w")   # open or create a file in "w"rite mode
    outputFile.writelines(outputList)
    outputFile.close()
 

Can you do that?

[prince99]

yeah i can do this but it is said that we have to write it in the new window or we have to print out the cards.

[prince99]

i am sorry if i am bothering anyone of you but i am learning the language, so thats y i want help if i didnot see your style of programming then how i will learn, i want to see how people program and how different it is from the book. As you people know all people have thier own way and style of programming. Please don't bother if you don't wanna answer.

thanx

[bartonc]

i am sorry if i am bothering anyone of you but i am learning the language, so thats y i want help if i didnot see your style of programming then how i will learn, i want to see how people program and how different it is from the book. As you people know all people have thier own way and style of programming. Please don't bother if you don't wanna answer.

thanx

It's not a bother, really. What you say is very true. I meant that we want to see your style as you learn. So post you working (or not) code so that we can help you improve even more! Here is some working (unfinished) code to get you started:

rank_desc = {"1":"Ace", "2":"Two", "3":"Trey", "4":"Four",
             "5":"Five", "6":"Six", "7":"Seven"}    # describe each rank in a dictionary
suit_desc = {"s":"Spades", "h":"Hearts"}    # describe each suit in a dictionary
class PlayingCard:
    def __init__ ( self, rank, suit ): # Creates a card.
        self.rank = rank
        self.suit = suit
    def getRank(self): #Returns the rank of the card.
        return self.rank
    def getSuit(self): # Returns the suit of the card. 
        return self.suit
    def BJValue(self): # Returns the 'Blackjack value' of the card (Ace;1, Face card:10) 
        return min(self.rank, 10)
    def __str__(self): # Returns a string naming the card. For example: 'Ace of Spades'
        return "The %s of %s is worth %d Blackjack" %(rank_desc[self.rank],
                                                 suit_desc[self.suit],
                                                 self.BJValue())
def WriteCardDatabase(filename):
    """"Create a random collection of card specs.
    Dictionaries work great because they are not ordered lists."""
    outputList = [] # an empty list for temporary storage
    for rank, r_desc in rank_desc.items():
        for suit, s_desc in suit_desc.items():
            line = rank + " " + suit + "\n"
            outputList.append(line)
    outputFile = file(filename, "w") # open or create a file in "w"rite mode
    outputFile.writelines(outputList)
    outputFile.close()
def ReadCardDatabase(filename):
    inputFile = file(filename, "r")    # read mode
    inputList = inputFile.readlines()
    inputFile.close()
    return inputList
def CreateDeckOfCards(cardspecs):
    cardList = []
    for item in cardspecs:
        cardspec = item.split()
        rank, suit = cardspec[0], cardspec[1]
        cardList.append(PlayingCard(rank, suit))
    return cardList
class DeckOfCards:
    def __init__(self, cardspecs): # Creates a deck of cards in standard order.
        self.deck = CreateDeckOfCards(cardspecs)
    def Shuffle(self): # Randomizes the order of the cards.
        pass
    def DealCard(self): # Returns a single card from the top of the deck, and removes the card from the deck.
        return self.deck.pop(0) # pop the first card off the deck
    def CardsLeft(self): # Returns the number of cards left in the deck
        return len(self.deck)
 
# WriteCardDatabase(r"C:\WINDOWS\Temp\cardlist.txt")
cardspecList = ReadCardDatabase(r"C:\WINDOWS\Temp\cardlist.txt")
# now that you have a list, you can create a DeckOfCards object
### just move this from the module scope to the class scope
# myDeck = CreateDeckOfCards(cardspecList)
myDeck = DeckOfCards(cardspecList)
print myDeck.DealCard()
print myDeck.CardsLeft()
print myDeck.DealCard()
print myDeck.CardsLeft()
 

[bartonc]

Here is a shuffle method that mostly works and an improved (no error dealing from an empty deck) dealcard method and a print routine:

[HTML]
def Shuffle(self): # Randomizes the order of the cards.
nCards = len(self.deck) - 1 # initialize working variables
tempList = copy.copy(self. deck)
index = randint(0, nCards)
positionList = [index]
for item in tempList: # find next random position in the deck
self.deck[index] = item
while (index in positionList) and (len(positionLi st) <= nCards):
index = randint(0, nCards)
positionList.ap pend(index) # mark this position as used
def DealCard(self): # Returns a single card from the top of the deck, and removes the card from the deck.
try:
return self.deck.pop(0 ) # pop the first card off the deck
except IndexError:
return None


myDeck = DeckOfCards(car dspecList)
myDeck.Shuffle( )
myCard = myDeck.DealCard ()
while myCard:
print myCard
print myDeck.CardsLef t()
myCard = myDeck.DealCard ()
[/HTML]

[prince99]

OK, i worked it out but it is giving me an error here

Traceback (most recent call last):
  File "D:\pythonassign2\52cards.py", line 80, in ?
    myCard = myDeck.DealCard()
  File "D:\pythonassign2\52cards.py", line 50, in DealCard
    return self.deck.pop(0) # pop the first card off the deck
IndexError: pop from empty list
 

should i place 52 in the empty list, what you reckon it will solve the problem?

[bvdet]

try:
        return self.deck.pop(0)
except IndexError:
        return None

This will return the Python null object None and tell the calling function that the deck is empty. Check bartonc's code.