06 - Property-Staticmethod-Classmethod.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Property"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 62,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Animal:\n",
    "    \n",
    "    def __init__(self, name):\n",
    "        self._name = name\n",
    "    \n",
    "    @property\n",
    "    def name(self):\n",
    "        print('+++ Cat Info +++')\n",
    "        return self._name\n",
    "    \n",
    "    @name.setter \n",
    "    def name(self, name):\n",
    "        self._name = name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 63,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "+++ Cat Info +++\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'Babon'"
      ]
     },
     "execution_count": 63,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cat = Animal('Babon')\n",
    "cat.name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 64,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "+++ Cat Info +++\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'Nyiung'"
      ]
     },
     "execution_count": 64,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cat = Animal('Babon')\n",
    "cat.name = 'Nyiung'\n",
    "cat.name"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Staticmethod"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 138,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Animal:\n",
    "    def __init__(self,name):\n",
    "        self.name = name\n",
    "    \n",
    "    def regular_info(self):\n",
    "        return 'This is a regular method'\n",
    "    \n",
    "    @staticmethod\n",
    "    def staticmethod_info():\n",
    "        return 'This is a example staticmethod'\n",
    "        \n",
    "    def regular_name(self):\n",
    "        print('+++ Cat Info +++')\n",
    "        return self.name\n",
    "    \n",
    "    @staticmethod\n",
    "    def staticinfo_name(name):\n",
    "        print('+++ Cat Info +++')\n",
    "        print('Name : {}'.format(name))\n",
    "        print('{} is a mamalia'.format(name))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 139,
   "metadata": {},
   "outputs": [
    {
     "ename": "TypeError",
     "evalue": "regular_info() missing 1 required positional argument: 'self'",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-139-22cc567141f4>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;31m# Should Error, because class animal need arg name as init (self)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0mAnimal\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mregular_info\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mTypeError\u001b[0m: regular_info() missing 1 required positional argument: 'self'"
     ]
    }
   ],
   "source": [
    "# Should Error, because class animal need arg name as init (self)\n",
    "Animal.regular_info()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 140,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'This is a example staticmethod'"
      ]
     },
     "execution_count": 140,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# With staticmethod decorator\n",
    "Animal.staticmethod_info()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 141,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "+++ Cat Info +++\n"
     ]
    },
    {
     "data": {
      "text/plain": [
       "'Nyiung'"
      ]
     },
     "execution_count": 141,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Normal call\n",
    "cat = Animal('Nyiung')\n",
    "cat.regular_name()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 142,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "+++ Cat Info +++\n",
      "Name : Nyiung\n",
      "Nyiung is a mamalia\n"
     ]
    }
   ],
   "source": [
    "# With staticmethod decorator\n",
    "Animal.staticinfo_name('Nyiung')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Classmethod"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 198,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Animal:\n",
    "    \n",
    "    def __init__(self, name):\n",
    "        self.name = name\n",
    "        \n",
    "        \n",
    "    def __repr__(self):\n",
    "        info = \"+++ Cat Info +++ \\n Name: {0} \\n {0} is a mamalia\".format(self.name)\n",
    "        return info\n",
    "        \n",
    "    @classmethod\n",
    "    def kuro(class_):\n",
    "        return class_('Kuro')\n",
    "    \n",
    "    \n",
    "    @classmethod\n",
    "    def nyiung(class_):\n",
    "        return class_('Nyuing') \n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 199,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "+++ Cat Info +++ \n",
       " Name: Kuro \n",
       " Kuro is a mamalia"
      ]
     },
     "execution_count": 199,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# Classmethod\n",
    "Animal.kuro()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 200,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "+++ Cat Info +++ \n",
       " Name: Nyuing \n",
       " Nyuing is a mamalia"
      ]
     },
     "execution_count": 200,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Animal.nyiung()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 201,
   "metadata": {},
   "outputs": [
    {
     "ename": "TypeError",
     "evalue": "__init__() missing 1 required positional argument: 'name'",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-201-23763386f291>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;31m# Should Error\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0mcat\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mAnimal\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      3\u001b[0m \u001b[0mcat\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mkuro\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
      "\u001b[0;31mTypeError\u001b[0m: __init__() missing 1 required positional argument: 'name'"
     ]
    }
   ],
   "source": [
    "# Should Error\n",
    "cat = Animal()\n",
    "cat.kuro()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Example "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 247,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Animal:\n",
    "    \n",
    "    def __init__(self, name):\n",
    "        self.name = name\n",
    "        \n",
    "        \n",
    "    def __repr__(self):\n",
    "        info = \"+++ Cat Info +++ \\n Name: {0} \\n {0} is a mamalia\".format(self.name)\n",
    "        return info\n",
    "\n",
    "    @property\n",
    "    def get_name(self):\n",
    "        return self.name\n",
    "    \n",
    "    @get_name.setter\n",
    "    def set_name(self, new_name):\n",
    "        self.name = new_name\n",
    "    \n",
    "    \n",
    "    @staticmethod\n",
    "    def custom(name):\n",
    "        return f'{name} is a cat and mamalia'\n",
    "        \n",
    "        \n",
    "    @classmethod\n",
    "    def kuro(class_):\n",
    "        return class_('Kuro')\n",
    "    \n",
    "    \n",
    "    @classmethod\n",
    "    def nyiung(class_):\n",
    "        return class_('Nyuing') \n",
    "    \n",
    "    \n",
    "    @classmethod\n",
    "    def custom_cat(class_, name):\n",
    "        return class_.custom(name)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 248,
   "metadata": {},
   "outputs": [],
   "source": [
    "Cat = Animal('Babon')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 249,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Babon'"
      ]
     },
     "execution_count": 249,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Cat.get_name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 250,
   "metadata": {},
   "outputs": [],
   "source": [
    "Cat.set_name = 'Nyiung'"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 251,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Nyiung'"
      ]
     },
     "execution_count": 251,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Cat.get_name"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 252,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Ema is a cat and mamalia'"
      ]
     },
     "execution_count": 252,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Cat.custom('Ema')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 253,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "+++ Cat Info +++ \n",
       " Name: Nyuing \n",
       " Nyuing is a mamalia"
      ]
     },
     "execution_count": 253,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Cat.nyiung()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 254,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "+++ Cat Info +++ \n",
       " Name: Kuro \n",
       " Kuro is a mamalia"
      ]
     },
     "execution_count": 254,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Cat.kuro()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 255,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'Centimeter is a cat and mamalia'"
      ]
     },
     "execution_count": 255,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Cat.custom_cat('Centimeter')"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Class Method with Args"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [],
   "source": [
    "class Animal:\n",
    "    \n",
    "    def __init__(self, name):\n",
    "        self.name = name\n",
    "    \n",
    "    def __repr__(self):\n",
    "        return self.name\n",
    "    \n",
    "    @classmethod\n",
    "    def custom(class_, name):\n",
    "        return class_(name)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "nyiung"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "Animal.custom('nyiung')"
   ]
  }
 ],
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