staticmethod, classmethod, polymorphism.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "import random\n",
    "\n",
    "\n",
    "class Pokemon:\n",
    "    name = 'Pokemon'\n",
    "    \n",
    "    def __init__(self, name, type):\n",
    "        self.name = name\n",
    "        self.type = type\n",
    "        \n",
    "    @staticmethod\n",
    "    def create_electric():\n",
    "        pokemons = ('피카츄', '라이츄', '붐볼')\n",
    "        selected = random.choice(pokemons)\n",
    "        return Pokemon(selected, '전기')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [],
   "source": [
    "pikachu = Pokemon('피카츄', '전기')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [],
   "source": [
    "def make_random_electric_pokemon():\n",
    "    pokemons = ('피카츄', '라이츄', '붐볼')\n",
    "    selected = random.choice(pokemons)\n",
    "    return Pokemon(selected, '전기')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'붐볼'"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "e1 = make_random_electric_pokemon()\n",
    "e1.name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<__main__.Pokemon at 0x1086f21d0>"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Pokemon.create_electric()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Shop:\n",
    "    def __init__(self, name):\n",
    "        self.name = name\n",
    "        \n",
    "    def __repr__(self):\n",
    "        return self.name\n",
    "    \n",
    "    # staticmethod\n",
    "    # make_dummy_shop()\n",
    "    # '미정' 이라는 이름을 갖는 Shop인스턴스를 리턴\n",
    "    @staticmethod\n",
    "    def make_dummy():\n",
    "        return Shop('미정')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "미정"
      ]
     },
     "execution_count": 25,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "dummy1 = Shop.make_dummy()\n",
    "dummy1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Shop을 상속받은 Restaurant클래스 구현\n",
    "#  내용은 필요없으니 pass구문으로 넘김\n",
    "# r1에 Restaurant클래스의 make_dummy_shop() 호출 결과를 할당"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Restaurant(Shop):\n",
    "    pass"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<class '__main__.Shop'>\n"
     ]
    }
   ],
   "source": [
    "r1 = Restaurant.make_dummy()\n",
    "print(type(r1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Shop:\n",
    "    def __init__(self, name: str):\n",
    "        self.name = name\n",
    "        \n",
    "    def __repr__(self):\n",
    "        return self.name\n",
    "    \n",
    "    # staticmethod\n",
    "    # make_dummy_shop()\n",
    "    # '미정' 이라는 이름을 갖는 Shop인스턴스를 리턴\n",
    "    @classmethod\n",
    "    def make_dummy(cls):\n",
    "        return cls('미정')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Restaurant(Shop):\n",
    "    pass"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 43,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<class '__main__.Restaurant'>\n"
     ]
    }
   ],
   "source": [
    "r1 = Restaurant.make_dummy()\n",
    "print(type(r1))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": 61,
   "metadata": {},
   "outputs": [],
   "source": [
    "class User:\n",
    "    def __init__(self, name):\n",
    "        self.name = name\n",
    "        self.attack = 0\n",
    "        self.defense = 0\n",
    "    \n",
    "    def __repr__(self):\n",
    "        return f'{self.name} (atk: {self.attack}, def: {self.defense})'\n",
    "    \n",
    "    def use(self, item):\n",
    "        item.use(self)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 62,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Sword:\n",
    "    def use(self, user):\n",
    "        user.attack += 10"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 63,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Shield:\n",
    "    def use(self, user):\n",
    "        user.defense += 10"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 64,
   "metadata": {},
   "outputs": [],
   "source": [
    "user = User('이한영')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 65,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "이한영 (atk: 0, def: 0)"
      ]
     },
     "execution_count": 65,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "user"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 66,
   "metadata": {},
   "outputs": [],
   "source": [
    "sword1 = Sword()\n",
    "shield1 = Shield()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 67,
   "metadata": {},
   "outputs": [],
   "source": [
    "user.use(sword1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 68,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "이한영 (atk: 10, def: 0)"
      ]
     },
     "execution_count": 68,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "user"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 70,
   "metadata": {},
   "outputs": [],
   "source": [
    "user.use(shield1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 71,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "이한영 (atk: 10, def: 10)"
      ]
     },
     "execution_count": 71,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "user"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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