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Created January 12, 2022 17:27
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{
"cells": [
{
"metadata": {},
"cell_type": "markdown",
"source": "## Наука о данных\n### Совместный бакалавриат ВШЭ-РЭШ, 2021-2022 учебный год\n_Илья Щуров_\n\n[Страница курса](http://math-info.hse.ru/s21/j)"
},
{
"metadata": {},
"cell_type": "markdown",
"source": "### Занятие 1. Первое знакомство. Числа и строки"
},
{
"metadata": {
"trusted": false
},
"id": "square-hello",
"cell_type": "code",
"source": "3 + 5",
"execution_count": 1,
"outputs": [
{
"data": {
"text/plain": "8"
},
"execution_count": 1,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "communist-emergency",
"cell_type": "code",
"source": "4 * 2",
"execution_count": 2,
"outputs": [
{
"data": {
"text/plain": "8"
},
"execution_count": 2,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "plain-classic",
"cell_type": "code",
"source": "4 * (2 + 12 + 4)",
"execution_count": 3,
"outputs": [
{
"data": {
"text/plain": "72"
},
"execution_count": 3,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "incorporated-vacuum",
"cell_type": "code",
"source": "4 / 2",
"execution_count": 4,
"outputs": [
{
"data": {
"text/plain": "2.0"
},
"execution_count": 4,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "corresponding-sewing",
"cell_type": "code",
"source": "4 / 3",
"execution_count": 5,
"outputs": [
{
"data": {
"text/plain": "1.3333333333333333"
},
"execution_count": 5,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "micro-cleaning",
"cell_type": "code",
"source": "7 ^ 3",
"execution_count": 6,
"outputs": [
{
"data": {
"text/plain": "4"
},
"execution_count": 6,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "relevant-machinery",
"cell_type": "code",
"source": "6 ^ 2",
"execution_count": 7,
"outputs": [
{
"data": {
"text/plain": "4"
},
"execution_count": 7,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "adjustable-glenn",
"cell_type": "code",
"source": "7 ** 3",
"execution_count": 8,
"outputs": [
{
"data": {
"text/plain": "343"
},
"execution_count": 8,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "forbidden-custody",
"cell_type": "code",
"source": "123 ** 30",
"execution_count": 9,
"outputs": [
{
"data": {
"text/plain": "497912859868342793044999075260564303046944727069807798026337449"
},
"execution_count": 9,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "educated-agreement",
"cell_type": "code",
"source": "123 ** 500",
"execution_count": 10,
"outputs": [
{
"data": {
"text/plain": "8965112003743387866419647784927315243537577398481954222426083437213082039806506048030424592209618147281481074341167358469242828813696226117658531310221797965755925411086710642056316009519024606245548329630777317813054492673354533024816880914142784439169959774982569447995879688436892336648954517815625045635787288678544580242198333451309487282098969575553847754168588229702213908210009653068276533186816286578983934057589912114557823739803553122136891251149430869095850470411287824454929476779456715853189348987119897572775624893196980006690858421664960133893335823124753774907911894859324600049330600073382274253923933783261216102872109864629420380997890966850208568192936114422584937001223854367261989475155137259564459650933295211179377885357289425266265000342435452119689479564310560075474344488487387994286699510907179352086530781243641562154924124017365679503941737178177640751221050271934837510722283542290713096722037822559347346057685252869419712483250626684216370967211443921307689783021524279333909667952729825779105545744391041230001"
},
"execution_count": 10,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "accessible-beverage",
"cell_type": "code",
"source": "123 ** 5000",
"execution_count": 11,
"outputs": [
{
"data": {
"text/plain": 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},
"execution_count": 11,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "numeric-needle",
"cell_type": "code",
"source": "123.0 ** 5000",
"execution_count": 12,
"outputs": [
{
"ename": "OverflowError",
"evalue": "(34, 'Result too large')",
"output_type": "error",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[0;31mOverflowError\u001b[0m Traceback (most recent call last)",
"\u001b[0;32m<ipython-input-12-8648ce693b9c>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0;36m123.0\u001b[0m \u001b[0;34m**\u001b[0m \u001b[0;36m5000\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
"\u001b[0;31mOverflowError\u001b[0m: (34, 'Result too large')"
]
}
]
},
{
"metadata": {
"trusted": false
},
"id": "infinite-joseph",
"cell_type": "code",
"source": "x = 10\n10 * x",
"execution_count": 13,
"outputs": [
{
"data": {
"text/plain": "100"
},
"execution_count": 13,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "subtle-collector",
"cell_type": "code",
"source": "x",
"execution_count": 14,
"outputs": [
{
"data": {
"text/plain": "10"
},
"execution_count": 14,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "numerical-services",
"cell_type": "code",
"source": "x = x + 1",
"execution_count": 15,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "studied-traffic",
"cell_type": "code",
"source": "x",
"execution_count": 16,
"outputs": [
{
"data": {
"text/plain": "11"
},
"execution_count": 16,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {},
"id": "strategic-third",
"cell_type": "markdown",
"source": "### Числа Фибоначчи\nЧислами Фибоначчи называется последовательность \n\n$$x_1=x_2=1, \\quad x_{k+1}=x_k+x_{k-1}.$$"
},
{
"metadata": {
"trusted": false
},
"id": "nearby-squad",
"cell_type": "code",
"source": "x_current = 1\nx_previous = 1",
"execution_count": 52,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "later-process",
"cell_type": "code",
"source": "# Задача:\n# Написать ячейку, которая будет выводить при каждом\n# своём запуске очереденое число Фибоначчи",
"execution_count": 37,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "dense-lodge",
"cell_type": "code",
"source": "x_new = x_current + x_previous\nx_previous = x_current\nx_current = x_new\nx_current",
"execution_count": 62,
"outputs": [
{
"data": {
"text/plain": "144"
},
"execution_count": 62,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "occupational-cornwall",
"cell_type": "code",
"source": "s = \"Hello, World!\"",
"execution_count": 63,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "defined-designation",
"cell_type": "code",
"source": "s",
"execution_count": 64,
"outputs": [
{
"data": {
"text/plain": "'Hello, World!'"
},
"execution_count": 64,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "tested-jason",
"cell_type": "code",
"source": "'\"'",
"execution_count": 65,
"outputs": [
{
"data": {
"text/plain": "'\"'"
},
"execution_count": 65,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "handmade-flashing",
"cell_type": "code",
"source": "s",
"execution_count": 66,
"outputs": [
{
"data": {
"text/plain": "'Hello, World!'"
},
"execution_count": 66,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "biological-kingdom",
"cell_type": "code",
"source": "print(s)",
"execution_count": 67,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Hello, World!\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "sophisticated-building",
"cell_type": "code",
"source": "print(123)",
"execution_count": 68,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "123\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "every-cliff",
"cell_type": "code",
"source": "print(2)\nprint(123)",
"execution_count": 69,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "2\n123\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "compliant-projector",
"cell_type": "code",
"source": "print(2, 14)",
"execution_count": 70,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "2 14\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "concerned-following",
"cell_type": "code",
"source": "print(\"Hello, World!\")",
"execution_count": 71,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Hello, World!\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "difficult-literacy",
"cell_type": "code",
"source": "s",
"execution_count": 72,
"outputs": [
{
"data": {
"text/plain": "'Hello, World!'"
},
"execution_count": 72,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "common-printer",
"cell_type": "code",
"source": "s = \"123\"",
"execution_count": 73,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "ready-tiffany",
"cell_type": "code",
"source": "s",
"execution_count": 74,
"outputs": [
{
"data": {
"text/plain": "'123'"
},
"execution_count": 74,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "valued-sydney",
"cell_type": "code",
"source": "y = int(s)",
"execution_count": 76,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "reserved-stevens",
"cell_type": "code",
"source": "y",
"execution_count": 77,
"outputs": [
{
"data": {
"text/plain": "123"
},
"execution_count": 77,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "growing-tournament",
"cell_type": "code",
"source": "y",
"execution_count": 78,
"outputs": [
{
"data": {
"text/plain": "123"
},
"execution_count": 78,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "general-sterling",
"cell_type": "code",
"source": "type(y)",
"execution_count": 79,
"outputs": [
{
"data": {
"text/plain": "int"
},
"execution_count": 79,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "pacific-hudson",
"cell_type": "code",
"source": "type(\"Hello\")",
"execution_count": 80,
"outputs": [
{
"data": {
"text/plain": "str"
},
"execution_count": 80,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "comparable-norwegian",
"cell_type": "code",
"source": "float(12)",
"execution_count": 81,
"outputs": [
{
"data": {
"text/plain": "12.0"
},
"execution_count": 81,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "labeled-director",
"cell_type": "code",
"source": "int(12.34)",
"execution_count": 82,
"outputs": [
{
"data": {
"text/plain": "12"
},
"execution_count": 82,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "adaptive-blade",
"cell_type": "code",
"source": "name = input(\"Как тебя зовут? \")\nprint(\"Привет, \" + name + \"!\")",
"execution_count": 1,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Как тебя зовут? 1\nПривет, 1!\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "induced-failure",
"cell_type": "code",
"source": "s = \"Hello\"\nw = \"World\"\ns + w",
"execution_count": 86,
"outputs": [
{
"data": {
"text/plain": "'HelloWorld'"
},
"execution_count": 86,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {},
"id": "civilian-silly",
"cell_type": "markdown",
"source": "## Задача\nНапишите программу, которая просит пользователя ввести число с клавиатуры и потом печатает число, которое будет вдвое больше введённого"
},
{
"metadata": {
"trusted": false
},
"id": "efficient-dietary",
"cell_type": "code",
"source": "s = input (\"Введите число. \")\nnumber = int(s)\nprint(number * 2)",
"execution_count": 3,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Введите число. 12\n24\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "hidden-starter",
"cell_type": "code",
"source": "number = int(input (\"Введите число. \"))\nprint(number * 2)",
"execution_count": 4,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Введите число. 123\n246\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "immune-baptist",
"cell_type": "code",
"source": "number = int(input(\"Введите число. \"))\nnumber * 2",
"execution_count": 22,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Введите число. 12\n"
},
{
"data": {
"text/plain": "24"
},
"execution_count": 22,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "encouraging-eating",
"cell_type": "code",
"source": "sqrt(4)",
"execution_count": 23,
"outputs": [
{
"data": {
"text/plain": "2.0"
},
"execution_count": 23,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "packed-cartoon",
"cell_type": "code",
"source": "import math",
"execution_count": 8,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "announced-arthur",
"cell_type": "code",
"source": "math.sqrt(4)",
"execution_count": 9,
"outputs": [
{
"data": {
"text/plain": "2.0"
},
"execution_count": 9,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "ranging-timothy",
"cell_type": "code",
"source": "import math as m\nm.sqrt(4)",
"execution_count": 10,
"outputs": [
{
"data": {
"text/plain": "2.0"
},
"execution_count": 10,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "moderate-radical",
"cell_type": "code",
"source": "m.sin(0)",
"execution_count": 11,
"outputs": [
{
"data": {
"text/plain": "0.0"
},
"execution_count": 11,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "requested-washer",
"cell_type": "code",
"source": "m.cos(0)",
"execution_count": 12,
"outputs": [
{
"data": {
"text/plain": "1.0"
},
"execution_count": 12,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "leading-intelligence",
"cell_type": "code",
"source": "from math import sqrt",
"execution_count": 13,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "global-notebook",
"cell_type": "code",
"source": "sqrt(4)",
"execution_count": 14,
"outputs": [
{
"data": {
"text/plain": "2.0"
},
"execution_count": 14,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "wicked-exception",
"cell_type": "code",
"source": "from math import sqrt",
"execution_count": 15,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "occupied-building",
"cell_type": "code",
"source": "print = 10\nprint(\"Hello\")",
"execution_count": 16,
"outputs": [
{
"ename": "TypeError",
"evalue": "'int' object is not callable",
"output_type": "error",
"traceback": [
"\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
"\u001b[0;31mTypeError\u001b[0m Traceback (most recent call last)",
"\u001b[0;32m<ipython-input-16-b0f5f40ee1e0>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[1;32m 1\u001b[0m \u001b[0mprint\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;36m10\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\"Hello\"\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: 'int' object is not callable"
]
}
]
},
{
"metadata": {
"trusted": false
},
"id": "metropolitan-beginning",
"cell_type": "code",
"source": "print",
"execution_count": 17,
"outputs": [
{
"data": {
"text/plain": "10"
},
"execution_count": 17,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "graphic-poker",
"cell_type": "code",
"source": "print * 2",
"execution_count": 18,
"outputs": [
{
"data": {
"text/plain": "20"
},
"execution_count": 18,
"metadata": {},
"output_type": "execute_result"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "comic-interface",
"cell_type": "code",
"source": "del print",
"execution_count": 19,
"outputs": []
},
{
"metadata": {
"trusted": false
},
"id": "incredible-crisis",
"cell_type": "code",
"source": "print(\"Hello\")",
"execution_count": 20,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Hello\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "neither-death",
"cell_type": "code",
"source": "%whos",
"execution_count": 21,
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": "Variable Type Data/Info\n--------------------------------------------------------\nblack_reformat function <function black_reformat at 0x7fdb0ff74f70>\nch str 12\njson module <module 'json' from '/Lib<...>hon3.9/json/__init__.py'>\nm module <module 'math' from '/Lib<...>th.cpython-39-darwin.so'>\nmath module <module 'math' from '/Lib<...>th.cpython-39-darwin.so'>\nname str 1\nnumber int 23\ns str 12\nsqrt builtin_function_or_method <built-in function sqrt>\n"
}
]
},
{
"metadata": {
"trusted": false
},
"id": "public-shift",
"cell_type": "code",
"source": "",
"execution_count": null,
"outputs": []
}
],
"metadata": {
"@webio": {
"lastCommId": null,
"lastKernelId": null
},
"kernelspec": {
"name": "python3",
"display_name": "Python 3",
"language": "python"
},
"language_info": {
"name": "python",
"version": "3.6.10",
"mimetype": "text/x-python",
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"pygments_lexer": "ipython3",
"nbconvert_exporter": "python",
"file_extension": ".py"
},
"gist": {
"id": "",
"data": {
"description": "Lesson01.ipynb",
"public": false
}
}
},
"nbformat": 4,
"nbformat_minor": 5
}
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