함수.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# 함수"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "def abc():\n",
    "    pass"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "<function __main__.abc()>"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "abc"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [],
   "source": [
    "def student(name, age, gender):\n",
    "    return {\n",
    "        'name': name,\n",
    "        'age': age,\n",
    "        'gender': gender,\n",
    "    }"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [],
   "source": [
    "s1 = student('hanyeong.lee', 31, 'male')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<class 'dict'>\n",
      "{'name': 'hanyeong.lee', 'age': 31, 'gender': 'male'}\n"
     ]
    }
   ],
   "source": [
    "print(type(s1))\n",
    "print(s1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<class 'dict'>\n",
      "{'name': 'boyoung.park', 'age': 29, 'gender': 'female'}\n"
     ]
    }
   ],
   "source": [
    "s2 = student(name='boyoung.park', age=29, gender='female')\n",
    "print(type(s2))\n",
    "print(s2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "metadata": {},
   "outputs": [
    {
     "ename": "TypeError",
     "evalue": "student() missing 1 required positional argument: 'gender'",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
      "\u001b[0;32m<ipython-input-12-516c73a526dd>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mstudent\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mTypeError\u001b[0m: student() missing 1 required positional argument: 'gender'"
     ]
    }
   ],
   "source": [
    "student(1, 1)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[]\n",
      "4470856648\n"
     ]
    }
   ],
   "source": [
    "sample_list = []\n",
    "print(sample_list)\n",
    "print(id(sample_list))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "metadata": {},
   "outputs": [],
   "source": [
    "def return_list(value, result=[]):\n",
    "    result.append(value)\n",
    "    return result"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[3]\n",
      "4470856648\n"
     ]
    }
   ],
   "source": [
    "result = return_list(3, sample_list)\n",
    "print(result)\n",
    "print(id(result))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[3, 5]\n",
      "4470856648\n"
     ]
    }
   ],
   "source": [
    "result = return_list(5, sample_list)\n",
    "print(result)\n",
    "print(id(result))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[3]\n",
      "4471576456\n"
     ]
    }
   ],
   "source": [
    "result = return_list(3)\n",
    "print(result)\n",
    "print(id(result))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 29,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[3, 5]\n",
      "4471576456\n"
     ]
    }
   ],
   "source": [
    "result2 = return_list(5)\n",
    "print(result2)\n",
    "print(id(result2))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[3, 5]\n"
     ]
    }
   ],
   "source": [
    "print(result2)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "metadata": {},
   "outputs": [],
   "source": [
    "# print_args에 위치인자 3, 5개를 전달 후 결과보기\n",
    "# print_kwargs에 키워드인자 2, 4개를 전달 후 결과보기\n",
    "# print_args에 키워드인자 전달해보기\n",
    "# print_kwargs에 위치인자 전달해보기"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "metadata": {},
   "outputs": [],
   "source": [
    "def print_args(*args):\n",
    "    return args"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(1, 2, 3, 4, 5)\n",
      "<class 'tuple'>\n"
     ]
    }
   ],
   "source": [
    "result = print_args(1,2,3,4,5)\n",
    "print(result)\n",
    "print(type(result))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "metadata": {},
   "outputs": [],
   "source": [
    "def print_kwargs(**kwargs):\n",
    "    return kwargs"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 38,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{'name': '이한영', 'age': 31}\n",
      "<class 'dict'>\n"
     ]
    }
   ],
   "source": [
    "result = print_kwargs(name='이한영', age=31)\n",
    "print(result)\n",
    "print(type(result))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 39,
   "metadata": {},
   "outputs": [],
   "source": [
    "def print_all_args(*args, **kwargs):\n",
    "    print(args, kwargs)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 40,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "(1, 3, 5) {'a': 'b', 'c': 324234}\n"
     ]
    }
   ],
   "source": [
    "print_all_args(1, 3, 5, a='b', c=324234)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 41,
   "metadata": {},
   "outputs": [],
   "source": [
    "def print_args(*args):\n",
    "    '''\n",
    "    전달받은 위치인자를 출력해준다\n",
    "    '''\n",
    "    print(args)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 42,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Help on function print_args in module __main__:\n",
      "\n",
      "print_args(*args)\n",
      "    전달받은 위치인자를 출력해준다\n",
      "\n"
     ]
    }
   ],
   "source": [
    "help(print_args)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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