{
"cells": [
{
"cell_type": "markdown",
"id": "a936c916",
"metadata": {},
"source": [
"### 리스트 컴프리헨션"
]
},
{
"cell_type": "code",
"execution_count": 4,
"id": "fc9b5294",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]\n"
]
}
],
"source": [
"square = [ x**2 for x in range(10)]\n",
"print(square)"
]
},
{
"cell_type": "code",
"execution_count": 5,
"id": "0f88e720",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[(1, 3), (1, 4), (2, 3), (2, 1), (2, 4), (3, 1), (3, 4)]\n"
]
}
],
"source": [
"combs = []\n",
"for x in [1,2,3]:\n",
" for y in [3,1,4]:\n",
" if x != y:\n",
" combs.append((x, y))\n",
"print(combs)"
]
},
{
"cell_type": "code",
"execution_count": 6,
"id": "3453577b",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[(1, 3), (1, 4), (2, 3), (2, 1), (2, 4), (3, 1), (3, 4)]\n"
]
}
],
"source": [
"combs = [(x, y) for x in [1,2,3] for y in [3,1,4] if x != y]\n",
"print(combs)"
]
},
{
"cell_type": "code",
"execution_count": 7,
"id": "b954da09",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[2, 4, 6, 8, 10, 12, 14, 16, 18, 3, 6, 9, 12, 15, 18, 21, 24, 27]\n"
]
}
],
"source": [
"gugudan = [ x*y for x in [2,3] for y in range(1,10) ]\n",
"print(gugudan)"
]
},
{
"cell_type": "code",
"execution_count": 8,
"id": "f5d08faa",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[-8, -4, 0, 4, 8]\n"
]
}
],
"source": [
"vec = [-4, -2, 0, 2, 4]\n",
"a = [x*2 for x in vec]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 13,
"id": "2acfa736",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[0, 2, 4]\n"
]
}
],
"source": [
"a = [ x for x in vec if x>=0]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 15,
"id": "017df0d3",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[4, 2, 0, 2, 4]\n"
]
}
],
"source": [
"a = [ abs(x) for x in vec ]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 18,
"id": "cbf83ddf",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"['banana', 'loganberry', 'passion fruit']\n"
]
}
],
"source": [
"freshfruit = [' banana', ' loganberry ', 'passion fruit ']\n",
"a = [x.strip() for x in freshfruit]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 17,
"id": "90fbdd28",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[(0, 0), (1, 1), (2, 4), (3, 9), (4, 16), (5, 25)]\n"
]
}
],
"source": [
"a = [(x, x**2) for x in range(6)]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 24,
"id": "b93a2d0e",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'tuple'>\n",
"<class 'tuple'>\n",
"(1, 2)\n"
]
}
],
"source": [
"a = (1,2)\n",
"print(type(a))\n",
"b = 1,2 # 튜플 패킹\n",
"print(type(b))\n",
"print(b)"
]
},
{
"cell_type": "code",
"execution_count": 27,
"id": "6ffffa85",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[(0, 0), (1, 1), (2, 4), (3, 9), (4, 16), (5, 25)]\n"
]
}
],
"source": [
"a = [(x, x**2) for x in range(6)]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 28,
"id": "0595c73f",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[1, 2, 3, 4, 5, 6, 7, 8, 9]\n"
]
}
],
"source": [
"vec = [[1,2,3], [4,5,6], [7,8,9]]\n",
"a = [num for elem in vec for num in elem]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 33,
"id": "da4e3f94",
"metadata": {},
"outputs": [],
"source": [
"matrix = [\n",
" [1, 2, 3, 4],\n",
" [5, 6, 7, 8],\n",
" [9, 10, 11, 12],\n",
" ]"
]
},
{
"cell_type": "code",
"execution_count": 30,
"id": "8571bca4",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[[1, 5, 9], [2, 6, 10], [3, 7, 11], [4, 8, 12]]\n"
]
}
],
"source": [
"a=[[row[i] for row in matrix] for i in range(4)] #[[1,5,9],[2,6,10],[3,7,11],[4,8,12]]\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 31,
"id": "7a761baa",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[[1, 5, 9], [2, 6, 10], [3, 7, 11], [4, 8, 12]]\n"
]
}
],
"source": [
"transposed = []\n",
"for i in range(4):\n",
" transposed.append([row[i] for row in matrix])\n",
"print(transposed)"
]
},
{
"cell_type": "code",
"execution_count": 32,
"id": "f084a092",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[[ 1 5 9]\n",
" [ 2 6 10]\n",
" [ 3 7 11]\n",
" [ 4 8 12]]\n"
]
}
],
"source": [
"import numpy as np\n",
"\n",
"matrix = np.array([\n",
" [1, 2, 3, 4],\n",
" [5, 6, 7, 8],\n",
" [9, 10, 11, 12],\n",
" ])\n",
"\n",
"print(matrix.T)"
]
},
{
"cell_type": "code",
"execution_count": 34,
"id": "39f2da9c",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[[1, 5, 9], [2, 6, 10], [3, 7, 11], [4, 8, 12]]\n"
]
}
],
"source": [
"# [[row[i] for row in matrix] for i in range(4)] \n",
"\n",
"transposed = []\n",
"for i in range(4):\n",
" transposed_row = []\n",
" for row in matrix:\n",
" transposed_row.append(row[i])\n",
" transposed.append(transposed_row)\n",
"\n",
"print(transposed)"
]
},
{
"cell_type": "markdown",
"id": "85fae393",
"metadata": {},
"source": [
"### 튜플 응용"
]
},
{
"cell_type": "code",
"execution_count": 38,
"id": "820ca6be",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"(12345, 54321, 'hello!')\n"
]
},
{
"data": {
"text/plain": [
"12345"
]
},
"execution_count": 38,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"t = 12345, 54321, 'hello!' # 튜플 패킹\n",
"print(t)\n",
"t[0]"
]
},
{
"cell_type": "code",
"execution_count": 39,
"id": "18686a46",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"((12345, 54321, 'hello!'), (1, 2, 3, 4, 5))\n"
]
}
],
"source": [
"u = t, (1, 2, 3, 4, 5)\n",
"print(u)"
]
},
{
"cell_type": "code",
"execution_count": 40,
"id": "68370884",
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "'tuple' object does not support item assignment",
"output_type": "error",
"traceback": [
"\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[1;31mTypeError\u001b[0m Traceback (most recent call last)",
"\u001b[1;32m<ipython-input-40-d739abe3b757>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[0mt\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m0\u001b[0m\u001b[1;33m]\u001b[0m \u001b[1;33m=\u001b[0m \u001b[1;36m88888\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[1;31mTypeError\u001b[0m: 'tuple' object does not support item assignment"
]
}
],
"source": [
"t[0] = 88888"
]
},
{
"cell_type": "code",
"execution_count": 41,
"id": "37283658",
"metadata": {},
"outputs": [
{
"ename": "TypeError",
"evalue": "'tuple' object doesn't support item deletion",
"output_type": "error",
"traceback": [
"\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[1;31mTypeError\u001b[0m Traceback (most recent call last)",
"\u001b[1;32m<ipython-input-41-542f9bb8f15e>\u001b[0m in \u001b[0;36m<module>\u001b[1;34m\u001b[0m\n\u001b[1;32m----> 1\u001b[1;33m \u001b[1;32mdel\u001b[0m \u001b[0mt\u001b[0m\u001b[1;33m[\u001b[0m\u001b[1;36m0\u001b[0m\u001b[1;33m]\u001b[0m\u001b[1;33m\u001b[0m\u001b[1;33m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[1;31mTypeError\u001b[0m: 'tuple' object doesn't support item deletion"
]
}
],
"source": [
"del t[0]"
]
},
{
"cell_type": "code",
"execution_count": 43,
"id": "61195340",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"([2, 2, 3], [3, 2, 1])"
]
},
"execution_count": 43,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"v = ([1, 2, 3], [3, 2, 1])\n",
"# v[0] = 2\n",
"v[0][0] = 2\n",
"v"
]
},
{
"cell_type": "code",
"execution_count": 51,
"id": "20904608",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'tuple'>\n"
]
}
],
"source": [
"empty = ()\n",
"print(type(empty))"
]
},
{
"cell_type": "code",
"execution_count": 56,
"id": "28463b83",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'tuple'>\n",
"('hello',)\n"
]
}
],
"source": [
"singleton = 'hello',\n",
"print(type(singleton))\n",
"print(singleton)"
]
},
{
"cell_type": "code",
"execution_count": 59,
"id": "c6572f9d",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"1 2 3\n"
]
}
],
"source": [
"t = 1,2,3 # 튜플 패킹\n",
"x, y, z = t # 튜플 언패킹\n",
"print(x,y,z)"
]
},
{
"cell_type": "code",
"execution_count": 60,
"id": "2e3b184e",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"1 2 3\n"
]
}
],
"source": [
"x, y, z = 1,2,3\n",
"print(x,y,z)"
]
},
{
"cell_type": "code",
"execution_count": 61,
"id": "bca38d89",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"0 1 1 2 3 5 8 "
]
}
],
"source": [
"a = 0\n",
"b = 1\n",
"while a < 10:\n",
" print(a, end=' ')\n",
" c = a+b\n",
" a = b\n",
" b = c"
]
},
{
"cell_type": "code",
"execution_count": 62,
"id": "a8b1c6d1",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"0 1 1 2 3 5 8 "
]
}
],
"source": [
"a = 0\n",
"b = 1\n",
"while a < 10:\n",
" print(a, end=' ')\n",
" a, b = b, a+b"
]
},
{
"cell_type": "code",
"execution_count": 63,
"id": "032a9e5f",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"4 3\n"
]
}
],
"source": [
"a = 3\n",
"b = 4\n",
"\n",
"t = a\n",
"a = b\n",
"b = t\n",
"print(a, b)"
]
},
{
"cell_type": "code",
"execution_count": 64,
"id": "9f1f1e19",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"4 3\n"
]
}
],
"source": [
"a = 3\n",
"b = 4\n",
"\n",
"b,a = a,b\n",
"print(a, b)"
]
},
{
"cell_type": "code",
"execution_count": 67,
"id": "52ab59f7",
"metadata": {
"scrolled": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'str'>\n",
"50\n",
"<class 'str'>\n",
"51\n"
]
}
],
"source": [
"import sys\n",
"\n",
"print(type(\"a\"))\n",
"print(sys.getsizeof(\"a\"))\n",
"\n",
"print(type(\"ab\"))\n",
"print(sys.getsizeof(\"ab\"))"
]
},
{
"cell_type": "markdown",
"id": "575768f9",
"metadata": {},
"source": [
"### 문자열 함수"
]
},
{
"cell_type": "code",
"execution_count": 88,
"id": "31de1edb",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"hello hello world\n",
"17\n",
"HELLO HELLO WORLD\n",
"hello hello world\n",
"Hello hello world\n",
"Hello Hello World\n",
"1\n",
"0\n",
"6\n",
"False\n",
"True\n"
]
}
],
"source": [
"a = \"hello hello world\"\n",
"print(a)\n",
"print(len(a))\n",
"print(a.upper())\n",
"print(a.lower())\n",
"print(a.capitalize())\n",
"print(a.title())\n",
"print(a.count('wor'))\n",
"print(a.find(\"hel\"))\n",
"print(a.rfind('hel'))\n",
"print(a.startswith('world'))\n",
"print(a.endswith('world'))"
]
},
{
"cell_type": "code",
"execution_count": 92,
"id": "1ddf29e3",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[hello]\n",
"[ hello]\n",
"[hello ]\n"
]
}
],
"source": [
"a = \" hello \"\n",
"print(\"[\"+a.strip()+\"]\")\n",
"print(\"[\"+a.rstrip()+\"]\")\n",
"print(\"[\"+a.lstrip()+\"]\")"
]
},
{
"cell_type": "code",
"execution_count": 94,
"id": "a3b70e80",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"12 23 34\n",
"['12', '23', '34']\n"
]
}
],
"source": [
"a = input().split()\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 95,
"id": "f36ea326",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"['hello', 'world', 'how', 'are', 'you']\n"
]
}
],
"source": [
"a = \"hello world how are you\"\n",
"b = a.split()\n",
"print(b)"
]
},
{
"cell_type": "code",
"execution_count": 97,
"id": "b2a701f0",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"['010', '1234', '5678']\n"
]
}
],
"source": [
"hp = \"010-1234-5678\"\n",
"b = hp.split(\"-\")\n",
"print(b)"
]
},
{
"cell_type": "code",
"execution_count": 99,
"id": "1e9892ec",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"['192', '168', '56', '1']\n"
]
}
],
"source": [
"ip = \"192.168.56.1\"\n",
"b = ip.split(\".\")\n",
"print(b)"
]
},
{
"cell_type": "code",
"execution_count": 102,
"id": "7bdff597",
"metadata": {
"scrolled": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"숫자 : 1234\n"
]
}
],
"source": [
"a = \"1234\"\n",
"if a.isdigit():\n",
" print(\"숫자 : %d\"%(int(a)))\n",
"else :\n",
" print(\"숫자 아님\")"
]
},
{
"cell_type": "markdown",
"id": "6f4759b2",
"metadata": {},
"source": [
"### 문자열 역 슬레쉬 "
]
},
{
"cell_type": "code",
"execution_count": 105,
"id": "f925d8e7",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\"Isn't,\" they said.\n"
]
}
],
"source": [
"print('\"Isn\\'t,\" they said.')"
]
},
{
"cell_type": "code",
"execution_count": 110,
"id": "d3ca9a63",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"First line.\n",
"Second line.\n"
]
}
],
"source": [
"s = 'First line.\\nSecond line.' \n",
"print(s)"
]
},
{
"cell_type": "code",
"execution_count": 112,
"id": "48fd14fd",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"C:\\some\\name\n"
]
}
],
"source": [
"print('C:\\some\\\\name')"
]
},
{
"cell_type": "code",
"execution_count": 113,
"id": "43df6f60",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"C:\\some\\name\n"
]
}
],
"source": [
"print(r'C:\\some\\name')"
]
},
{
"cell_type": "code",
"execution_count": 116,
"id": "cd1b2cf3",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"\n",
"Usage: thingy [OPTIONS]\n",
" -h Display this usage message\n",
" -H hostname Hostname to connect to\n",
"\n"
]
}
],
"source": [
"print('''\n",
"Usage: thingy [OPTIONS]\n",
" -h Display this usage message\n",
" -H hostname Hostname to connect to\n",
"''')\n"
]
},
{
"cell_type": "code",
"execution_count": 117,
"id": "b5c1b022",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"python\n"
]
}
],
"source": [
"a = 'py'+'thon'\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 118,
"id": "3b494ca7",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"python\n"
]
}
],
"source": [
"a = 'py' 'thon'\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 119,
"id": "e098907b",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"'Put several strings within parentheses to have them joined together.'"
]
},
"execution_count": 119,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"text = ('Put several strings within parentheses '\n",
" 'to have them joined together.')\n",
"text"
]
},
{
"cell_type": "code",
"execution_count": 121,
"id": "821c38a9",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"'Python'"
]
},
"execution_count": 121,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"prefix = 'Py'\n",
"prefix+'thon'"
]
},
{
"cell_type": "code",
"execution_count": 124,
"id": "7123d70e",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"'unununium'"
]
},
"execution_count": 124,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"('un' * 3)+'ium'"
]
},
{
"cell_type": "markdown",
"id": "41a02311",
"metadata": {},
"source": [
"### 딕셔너리 출력"
]
},
{
"cell_type": "code",
"execution_count": 125,
"id": "b3db1265",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"a b c d "
]
}
],
"source": [
"x = {'a': 10, 'b':20, 'c':30, 'd':40}\n",
"for i in x:\n",
" print(i, end=' ')"
]
},
{
"cell_type": "code",
"execution_count": 126,
"id": "dfb6963d",
"metadata": {
"scrolled": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"a 10\n",
"b 20\n",
"c 30\n",
"d 40\n"
]
}
],
"source": [
"x = {'a': 10, 'b':20, 'c':30, 'd':40}\n",
"for key, value in x.items():\n",
" print(key, value)"
]
},
{
"cell_type": "code",
"execution_count": 127,
"id": "fedf1557",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"a\n",
"b\n",
"c\n",
"d\n"
]
}
],
"source": [
"x = {'a': 10, 'b':20, 'c':30, 'd':40}\n",
"for key in x.keys():\n",
" print(key)"
]
},
{
"cell_type": "code",
"execution_count": 128,
"id": "9cf9c441",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"10\n",
"20\n",
"30\n",
"40\n"
]
}
],
"source": [
"x = {'a': 10, 'b':20, 'c':30, 'd':40}\n",
"for key in x.values():\n",
" print(key)"
]
},
{
"cell_type": "code",
"execution_count": 130,
"id": "a9c3b1e6",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"1 5\n",
"2 6\n",
"3 7\n",
"4 8\n"
]
}
],
"source": [
"a = [1,2,3,4]\n",
"b = [5,6,7,8]\n",
"for i,j in zip(a,b):\n",
" print(i,j)"
]
},
{
"cell_type": "code",
"execution_count": 132,
"id": "afe7363d",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"0 1\n",
"1 2\n",
"2 3\n",
"3 4\n"
]
}
],
"source": [
"a = [1,2,3,4]\n",
"for i,data in enumerate(a):\n",
" print(i,data)"
]
},
{
"cell_type": "code",
"execution_count": 133,
"id": "37ce7a56",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"{'a': 10, 'b': 20, 'c': 30, 'd': 40}"
]
},
"execution_count": 133,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"keys = ['a', 'b', 'c', 'd']\n",
"values = [10, 20, 30 ,40]\n",
"x = {key: value for key, value in zip(keys,values)}\n",
"x"
]
},
{
"cell_type": "code",
"execution_count": 134,
"id": "85c49ef1",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"{'a': 10, 'b': 20, 'c': 30, 'd': 40}"
]
},
"execution_count": 134,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"keys = ['a', 'b', 'c', 'd']\n",
"values = [10, 20, 30 ,40]\n",
"x = {}\n",
"for key, value in zip(keys,values):\n",
" x[key] = value\n",
"x"
]
},
{
"cell_type": "code",
"execution_count": 136,
"id": "903d51e6",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"{10: 'a', 20: 'b', 30: 'c', 40: 'd'}"
]
},
"execution_count": 136,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"y = {value: key for key, value in x.items()}\n",
"y"
]
},
{
"cell_type": "code",
"execution_count": 137,
"id": "b8206ef7",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"['b', 'c', 'd', 'd', 'a']"
]
},
"execution_count": 137,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"encode = [20, 30, 40, 40, 10]\n",
"z = [y[i] for i in encode]\n",
"z"
]
},
{
"cell_type": "code",
"execution_count": 138,
"id": "472c564c",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"{'a': 10, 'c': 30, 'd': 40}"
]
},
"execution_count": 138,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"x = {'a': 10, 'b': 20, 'c': 30, 'd': 40}\n",
"x = {key: value for key, value in x.items() if value !=20 }\n",
"x"
]
},
{
"cell_type": "markdown",
"id": "868624b6",
"metadata": {},
"source": [
"### 중첩된 딕셔너리"
]
},
{
"cell_type": "code",
"execution_count": 141,
"id": "551d10e8",
"metadata": {},
"outputs": [],
"source": [
"planet = {\n",
" 'Earth' : {\n",
" 'mean_radius' : 6371.0,\n",
" 'orbital_perioid' : 365.2422\n",
" },\n",
" 'Mars' : {\n",
" 'mean_radius' : 3389.5,\n",
" 'orbital_perioid' : 686.9600\n",
" }\n",
"}"
]
},
{
"cell_type": "code",
"execution_count": 142,
"id": "039ea151",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'Earth': {'mean_radius': 6371.0, 'orbital_perioid': 365.2422}, 'Mars': {'mean_radius': 3389.5, 'orbital_perioid': 686.96}}\n"
]
}
],
"source": [
"print(planet)"
]
},
{
"cell_type": "code",
"execution_count": 143,
"id": "0732a808",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'mean_radius': 6371.0, 'orbital_perioid': 365.2422}\n"
]
}
],
"source": [
"print(planet['Earth'])"
]
},
{
"cell_type": "code",
"execution_count": 144,
"id": "ac80d6ae",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"6371.0\n"
]
}
],
"source": [
"print(planet['Earth']['mean_radius'])"
]
},
{
"cell_type": "code",
"execution_count": 145,
"id": "44e7099b",
"metadata": {},
"outputs": [],
"source": [
"planet['Earth']['orbital_perioid'] = 365.25641"
]
},
{
"cell_type": "code",
"execution_count": 146,
"id": "aafc30c7",
"metadata": {
"scrolled": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'mean_radius': 3389.5, 'orbital_perioid': 686.96}\n"
]
}
],
"source": [
"print(planet['Mars'])"
]
},
{
"cell_type": "code",
"execution_count": 149,
"id": "bb2db575",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"0x168fc656980\n",
"0x168fc656980\n"
]
}
],
"source": [
"x = {'a': 0, 'b': 0, 'c': 0, 'd': 0}\n",
"y = x\n",
"x is y\n",
"print(hex(id(x)))\n",
"print(hex(id(y)))"
]
},
{
"cell_type": "code",
"execution_count": 157,
"id": "7395104a",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"0x168fc63c700\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x168fc63c700\n",
"0x7ffeea213370\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n"
]
}
],
"source": [
"x = {'a': 0, 'b': 0, 'c': 0, 'd': 0}\n",
"print(hex(id(x)))\n",
"print(hex(id(x['a'])))\n",
"print(hex(id(x['b'])))\n",
"print(hex(id(x['c'])))\n",
"print(hex(id(x['d'])))\n",
"y = x\n",
"y['a'] = 99\n",
"print(hex(id(x)))\n",
"print(hex(id(x['a'])))\n",
"print(hex(id(x['b'])))\n",
"print(hex(id(x['c'])))\n",
"print(hex(id(x['d'])))"
]
},
{
"cell_type": "code",
"execution_count": 159,
"id": "43a56d57",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"99\n",
"99\n"
]
}
],
"source": [
"print(x['a'])\n",
"print(y['a'])"
]
},
{
"cell_type": "code",
"execution_count": 163,
"id": "022146a0",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"0x168fc664f00\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x168fc1a1900\n",
"0x7ffeea213370\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0x7ffeea212710\n",
"0\n",
"99\n"
]
}
],
"source": [
"x = {'a': 0, 'b': 0, 'c': 0, 'd': 0}\n",
"print(hex(id(x)))\n",
"print(hex(id(x['a'])))\n",
"print(hex(id(x['b'])))\n",
"print(hex(id(x['c'])))\n",
"print(hex(id(x['d'])))\n",
"y = x.copy()\n",
"y['a'] = 99\n",
"print(hex(id(y)))\n",
"print(hex(id(y['a'])))\n",
"print(hex(id(y['b'])))\n",
"print(hex(id(y['c'])))\n",
"print(hex(id(y['d'])))\n",
"print(x['a'])\n",
"print(y['a'])"
]
},
{
"cell_type": "code",
"execution_count": 164,
"id": "782d631f",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'a': {'python': '2.7.15'}, 'b': {'python': '3.8'}}\n",
"{'a': {'python': '2.7.15'}, 'b': {'python': '3.8'}}\n"
]
}
],
"source": [
"x = {'a': {'python' : '2.7'}, 'b': {'python' : '3.8'}}\n",
"y = x.copy()\n",
"y['a']['python'] = '2.7.15'\n",
"print(x)\n",
"print(y)"
]
},
{
"cell_type": "code",
"execution_count": 165,
"id": "bc6b837d",
"metadata": {
"scrolled": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{'a': {'python': '2.7'}, 'b': {'python': '3.8'}}\n",
"{'a': {'python': '2.7.15'}, 'b': {'python': '3.8'}}\n"
]
}
],
"source": [
"import copy\n",
"x = {'a': {'python' : '2.7'}, 'b': {'python' : '3.8'}}\n",
"y = copy.deepcopy(x)\n",
"y['a']['python'] = '2.7.15'\n",
"print(x)\n",
"print(y)"
]
},
{
"cell_type": "markdown",
"id": "48746634",
"metadata": {},
"source": [
"### 집합 자료형"
]
},
{
"cell_type": "code",
"execution_count": 166,
"id": "e093e1d2",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{1, 2, 3}\n"
]
}
],
"source": [
"s =set([1,2,3,1,2,3])\n",
"print(s)"
]
},
{
"cell_type": "code",
"execution_count": 171,
"id": "e65624e3",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{1, 2, 3}\n"
]
}
],
"source": [
"s.add(1)\n",
"print(s)"
]
},
{
"cell_type": "code",
"execution_count": 172,
"id": "47a4b772",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{2, 3}\n"
]
}
],
"source": [
"s.remove(1) # 전달받은 값을 삭제 (없을 때 에러 메시지를 출력)\n",
"print(s)"
]
},
{
"cell_type": "code",
"execution_count": 173,
"id": "d0fa6e11",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{1, 2, 3, 4, 5, 6, 7}\n"
]
}
],
"source": [
"s.update([1,4,5,6,7])\n",
"print(s)"
]
},
{
"cell_type": "code",
"execution_count": 176,
"id": "7c443d17",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{1, 2, 4, 5, 6, 7}\n"
]
}
],
"source": [
"s.discard(3) # 전달받은 값을 삭제 (없을 때 그냥 무시)\n",
"print(s)"
]
},
{
"cell_type": "code",
"execution_count": 177,
"id": "5592cd9b",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"set()\n"
]
}
],
"source": [
"s.clear()\n",
"print(s)"
]
},
{
"cell_type": "code",
"execution_count": 179,
"id": "058b2700",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{1, 2, 3, 4, 5, 6, 7}\n",
"{1, 2, 3, 4, 5, 6, 7}\n"
]
}
],
"source": [
"s1 =set([1,2,3,4,5])\n",
"s2 =set([3,4,5,6,7])\n",
"print(s1.union(s2)) # 합집합\n",
"print(s1 | s2)"
]
},
{
"cell_type": "code",
"execution_count": 180,
"id": "e96614be",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{3, 4, 5}\n",
"{3, 4, 5}\n"
]
}
],
"source": [
"print(s1.intersection(s2))\n",
"print(s1 & s2)"
]
},
{
"cell_type": "code",
"execution_count": 181,
"id": "51307638",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{1, 2}\n",
"{1, 2}\n"
]
}
],
"source": [
"print(s1.difference(s2))\n",
"print(s1 - s2)"
]
},
{
"cell_type": "code",
"execution_count": 182,
"id": "91d9cbd7",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{6, 7}\n",
"{6, 7}\n"
]
}
],
"source": [
"print(s2.difference(s1))\n",
"print(s2 - s1)"
]
},
{
"cell_type": "code",
"execution_count": 183,
"id": "088eac75",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"{1, 2, 6, 7}\n",
"{1, 2, 6, 7}\n"
]
}
],
"source": [
"print(s1.symmetric_difference(s2))\n",
"print(s1 ^ s2)"
]
},
{
"cell_type": "code",
"execution_count": 184,
"id": "523dac08",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'dict'>\n"
]
}
],
"source": [
"a = {}\n",
"print(type(a))"
]
},
{
"cell_type": "code",
"execution_count": 186,
"id": "db7babdf",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'set'>\n",
"{'e', 'a', 'p', 'l'}\n"
]
}
],
"source": [
"a = {i for i in 'apple'}\n",
"print(type(a))\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 187,
"id": "394fd2bd",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"<class 'set'>\n"
]
}
],
"source": [
"a = set()\n",
"print(type(a))"
]
},
{
"cell_type": "code",
"execution_count": 188,
"id": "edfeae4f",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"{'e', 'i', 'n'}"
]
},
"execution_count": 188,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"a = {i for i in 'pineapple' if i not in 'apl'}\n",
"a"
]
},
{
"cell_type": "code",
"execution_count": 203,
"id": "52519b7a",
"metadata": {},
"outputs": [
{
"data": {
"text/plain": [
"{'and', 'goodbye', 'hello', 'i', 'say', 'you'}"
]
},
"execution_count": 203,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"corpus = \"you say goodbye and i say hello .\" \n",
"words = corpus.split()\n",
"vocab = {x for x in words if x not in '.'}\n",
"vocab"
]
},
{
"cell_type": "code",
"execution_count": 204,
"id": "196f2824",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"1 2 3 4 5 6 "
]
}
],
"source": [
"a = {4,3,5,2,6,1}\n",
"for i in a:\n",
" print(i, end=\" \")"
]
},
{
"cell_type": "markdown",
"id": "a6274188",
"metadata": {},
"source": [
"### 연습문제 1번"
]
},
{
"cell_type": "code",
"execution_count": 207,
"id": "ccf1d358",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"['ALPHA', 'BRAVO', 'Charlie', 'DELTA', 'echo', 'foxtrot']\n"
]
}
],
"source": [
"a = ['alpha', 'bravo', 'Charlie', 'delta', 'echo', 'foxtrot']\n",
"for i, data in enumerate(a):\n",
" if len(data) == 5:\n",
" a[i] = a[i].upper()\n",
"print(a)"
]
},
{
"cell_type": "code",
"execution_count": 210,
"id": "18af93dc",
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"['ALPHA', 'BRAVO', 'Charlie', 'DELTA', 'echo', 'foxtrot']\n"
]
}
],
"source": [
"a = ['alpha', 'bravo', 'Charlie', 'delta', 'echo', 'foxtrot']\n",
"b = [ i.upper() if len(i)==5 else i for i in a ]\n",
"print(b)"
]
}
],
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