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#| default_exp card

Card¶

Define a card in a deck of cards

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#|export
from fastcore.all import *
import random

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#|export
suits = ["♣️", "♦️", "❤️", "♠️"]
ranks = [None, "A"] + [str(x) for x in range(2,11)]  + ["J", "Q", "K"]

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#|export
class Card:
    "Represents a standard playing card."
    def __init__(self, suit=0, rank=2):
        self.suit,self.rank = suit, rank
        self.suit_nm,self.rank_nm = suits[self.suit],ranks[self.rank]

    def __eq__(self, other): return (self.suit, self.rank) == (other.suit, other.rank)
    def __lt__(self, other): return (self.suit, self.rank) < (other.suit, other.rank)
    def __str__(self): return f'{self.rank_nm}{self.suit_nm}'
    __repr__ = __str__

Creating Cards¶

Card is a class that represents a single card in a deck of cards. We can create cards like this:

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c = Card(suit=1, rank=3)
c

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3♦️

In these docs we'll generally show the expected output from our code like so:

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test_eq(str(c), '3♦️')

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c2 = Card(suit=2, rank=11)
test_eq(str(c2), 'J❤️')

:::{.callout-tip}

These test_eq statements are not just documentation, they are also unit tests! These cells will get tested automatically with continous integration. You can also run tests locally with the command nbdev_test. If you do not want to show a test in your docs, you can choose to hide cells with the #|hide directive.

:::

Comparing Cards¶

You can also compare cards like so:

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test_eq(c2 > c, True)

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#|hide
assert Card(suit=1, rank=3) == Card(suit=1, rank=3)

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#|hide
from nbdev.doclinks import nbdev_export
nbdev_export()

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