01_deck.ipynb

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   "cell_type": "code",
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   "source": [
    "#| default_exp deck"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# deck\n",
    "\n",
    "> A deck of playing cards"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "tags": []
   },
   "outputs": [],
   "source": [
    "#|export\n",
    "from nbdev_dav.card import *\n",
    "from fastcore.utils import *\n",
    "import random"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#|hide\n",
    "from nbdev.showdoc import *\n",
    "from fastcore.test import *"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#|export\n",
    "class Deck:\n",
    "    \"A deck of 52 cards\"\n",
    "    def __init__(self):\n",
    "        self.cards = [Card(s,r) for s in range(4) for r in range(1,14)]\n",
    "    def __len__(self):\n",
    "        return len(self.cards)\n",
    "    def __str__(self):\n",
    "        return'; '.join(map(str, self.cards))\n",
    "    def __contains__(self, card):\n",
    "        return card in self.cards\n",
    "    __repr__=__str__\n",
    "    \n",
    "    def shuffle(self):\n",
    "        \"Shuffles the cards in this deck\"\n",
    "        random.shuffle(self.cards)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We want all the cards to be present when we instantiate a deck:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "AClub; 2Club; 3Club; 4Club; 5Club; 6Club; 7Club; 8Club; 9Club; 10Club; JClub; QClub; KClub; ADiamond; 2Diamond; 3Diamond; 4Diamond; 5Diamond; 6Diamond; 7Diamond; 8Diamond; 9Diamond; 10Diamond; JDiamond; QDiamond; KDiamond; AHeart; 2Heart; 3Heart; 4Heart; 5Heart; 6Heart; 7Heart; 8Heart; 9Heart; 10Heart; JHeart; QHeart; KHeart; ASpade; 2Spade; 3Spade; 4Spade; 5Spade; 6Spade; 7Spade; 8Spade; 9Spade; 10Spade; JSpade; QSpade; KSpade"
      ]
     },
     "execution_count": null,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "deck = Deck()\n",
    "deck"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "That should be 52 cards:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "test_eq(len(deck),52)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "We can remove cards from a deck"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| export\n",
    "@patch\n",
    "def pop(self:Deck,\n",
    "        idx:int=-1):\n",
    "    \"Remove one card from the deck, defaulting to the last index\"\n",
    "    return self.cards.pop(idx)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "deck = Deck()\n",
    "test_eq(deck.pop(), Card(3,13))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "#| export\n",
    "@patch\n",
    "def remove(self:Deck,\n",
    "        card:Card):\n",
    "    \"Removes specified card from the deck\"\n",
    "    return self.cards.remove(card)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [
    {
     "ename": "TypeError",
     "evalue": "can't set attributes of built-in/extension type 'int'",
     "output_type": "error",
     "traceback": [
      "\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[1;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
      "Cell \u001b[1;32mIn[36], line 3\u001b[0m\n\u001b[0;32m      1\u001b[0m \u001b[38;5;66;03m#| export\u001b[39;00m\n\u001b[0;32m      2\u001b[0m \u001b[38;5;129;43m@patch\u001b[39;49m\n\u001b[1;32m----> 3\u001b[0m \u001b[38;5;28;43;01mdef\u001b[39;49;00m\u001b[43m \u001b[49m\u001b[38;5;21;43mdraw_n\u001b[39;49m\u001b[43m(\u001b[49m\u001b[43mn\u001b[49m\u001b[43m:\u001b[49m\u001b[38;5;28;43mint\u001b[39;49m\u001b[43m,\u001b[49m\n\u001b[0;32m      4\u001b[0m \u001b[43m           \u001b[49m\u001b[43mreplace\u001b[49m\u001b[43m:\u001b[49m\u001b[38;5;28;43mbool\u001b[39;49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[38;5;28;43;01mTrue\u001b[39;49;00m\u001b[43m)\u001b[49m\u001b[43m:\u001b[49m\n\u001b[0;32m      5\u001b[0m \u001b[43m    \u001b[49m\u001b[38;5;124;43m\"\u001b[39;49m\u001b[38;5;124;43mDraws n cards, with replacement if replace\u001b[39;49m\u001b[38;5;124;43m\"\u001b[39;49m\n\u001b[0;32m      6\u001b[0m \u001b[43m    \u001b[49m\u001b[43md\u001b[49m\u001b[43m \u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[43m \u001b[49m\u001b[43mDeck\u001b[49m\u001b[43m(\u001b[49m\u001b[43m)\u001b[49m\n",
      "File \u001b[1;32m~\\anaconda3\\envs\\template\\lib\\site-packages\\fastcore\\basics.py:962\u001b[0m, in \u001b[0;36mpatch\u001b[1;34m(f, as_prop, cls_method)\u001b[0m\n\u001b[0;32m    960\u001b[0m ann,glb,loc \u001b[38;5;241m=\u001b[39m get_annotations_ex(f)\n\u001b[0;32m    961\u001b[0m \u001b[38;5;28mcls\u001b[39m \u001b[38;5;241m=\u001b[39m union2tuple(eval_type(ann\u001b[38;5;241m.\u001b[39mpop(\u001b[38;5;124m'\u001b[39m\u001b[38;5;124mcls\u001b[39m\u001b[38;5;124m'\u001b[39m) \u001b[38;5;28;01mif\u001b[39;00m cls_method \u001b[38;5;28;01melse\u001b[39;00m \u001b[38;5;28mnext\u001b[39m(\u001b[38;5;28miter\u001b[39m(ann\u001b[38;5;241m.\u001b[39mvalues())), glb, loc))\n\u001b[1;32m--> 962\u001b[0m \u001b[38;5;28;01mreturn\u001b[39;00m \u001b[43mpatch_to\u001b[49m\u001b[43m(\u001b[49m\u001b[38;5;28;43mcls\u001b[39;49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[43mas_prop\u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[43mas_prop\u001b[49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[43mcls_method\u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[43mcls_method\u001b[49m\u001b[43m)\u001b[49m\u001b[43m(\u001b[49m\u001b[43mf\u001b[49m\u001b[43m)\u001b[49m\n",
      "File \u001b[1;32m~\\anaconda3\\envs\\template\\lib\\site-packages\\fastcore\\basics.py:951\u001b[0m, in \u001b[0;36mpatch_to.<locals>._inner\u001b[1;34m(f)\u001b[0m\n\u001b[0;32m    949\u001b[0m         \u001b[38;5;28msetattr\u001b[39m(c_, nm, MethodType(nf, c_))\n\u001b[0;32m    950\u001b[0m     \u001b[38;5;28;01melse\u001b[39;00m:\n\u001b[1;32m--> 951\u001b[0m         \u001b[38;5;28;43msetattr\u001b[39;49m\u001b[43m(\u001b[49m\u001b[43mc_\u001b[49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[43mnm\u001b[49m\u001b[43m,\u001b[49m\u001b[43m \u001b[49m\u001b[38;5;28;43mproperty\u001b[39;49m\u001b[43m(\u001b[49m\u001b[43mnf\u001b[49m\u001b[43m)\u001b[49m\u001b[43m \u001b[49m\u001b[38;5;28;43;01mif\u001b[39;49;00m\u001b[43m \u001b[49m\u001b[43mas_prop\u001b[49m\u001b[43m \u001b[49m\u001b[38;5;28;43;01melse\u001b[39;49;00m\u001b[43m \u001b[49m\u001b[43mnf\u001b[49m\u001b[43m)\u001b[49m\n\u001b[0;32m    952\u001b[0m \u001b[38;5;66;03m# Avoid clobbering existing functions\u001b[39;00m\n\u001b[0;32m    953\u001b[0m \u001b[38;5;28;01mreturn\u001b[39;00m \u001b[38;5;28mglobals\u001b[39m()\u001b[38;5;241m.\u001b[39mget(nm, builtins\u001b[38;5;241m.\u001b[39m\u001b[38;5;18m__dict__\u001b[39m\u001b[38;5;241m.\u001b[39mget(nm, \u001b[38;5;28;01mNone\u001b[39;00m))\n",
      "\u001b[1;31mTypeError\u001b[0m: can't set attributes of built-in/extension type 'int'"
     ]
    }
   ],
   "source": [
    "#| export\n",
    "@patch\n",
    "def draw_n(n:int,\n",
    "           replace:bool=True):\n",
    "    \"Draws n cards, with replacement if replace\"\n",
    "    d = Deck()\n",
    "    d.shuffle()\n",
    "    if repalce: return [d.cards[random.choice(range(len(d.cards)))] for _ in range(n)]\n",
    "    else: return d.cards[:n]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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