{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "5ffc18fc",
   "metadata": {},
   "source": [
    "# Генераторы массивов"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "17f0549b",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19]\n",
      "{0, 1, 2}\n",
      "(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)\n"
     ]
    }
   ],
   "source": [
    "\n",
    "n = 20\n",
    "a = [i for i in range(n)]\n",
    "b = {i%3 for i in range(n)}\n",
    "c = tuple(i for i in range(n))\n",
    "print(a)\n",
    "print(b)\n",
    "print(c)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "f64d6b65",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[62, 64, 58, 6, 28, 8, 3, 4, 8, 2, 94, 65, 4, 23, 26, 38, 67, 4, 72, 82]\n"
     ]
    }
   ],
   "source": [
    "# Модуль random\n",
    "import random as rd\n",
    "a = [rd.randint(0, 100) for i in range(n)]\n",
    "print(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "a03afa9b",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "{0: 0, 1: 1, 2: 4, 3: 9, 4: 16, 5: 25, 6: 36, 7: 49, 8: 64, 9: 81, 10: 100, 11: 121, 12: 144, 13: 169, 14: 196, 15: 225, 16: 256, 17: 289, 18: 324, 19: 361}\n"
     ]
    }
   ],
   "source": [
    "# Генерация словаря\n",
    "d = {i: i**2 for i in range(n)}\n",
    "print(d)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1523bfb5",
   "metadata": {},
   "source": [
    "# Сортировка"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "0e5b7a6e",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[-98, -96, -92, -60, -49, -42, -32, -18, -10, -10, 42, 53, 55, 64, 73, 75, 78, 81, 81, 98]\n",
      "[98, 81, 81, 78, 75, 73, 64, 55, 53, 42, -10, -10, -18, -32, -42, -49, -60, -92, -96, -98]\n",
      "[-10, -10, -18, -32, 42, -42, -49, 53, 55, -60, 64, 73, 75, 78, 81, 81, -92, -96, -98, 98]\n",
      "[-98, -96, -92, -60, -49, -42, -32, -18, -10, -10, 42, 53, 55, 64, 73, 75, 78, 81, 81, 98]\n"
     ]
    }
   ],
   "source": [
    "# sort и sorted\n",
    "\n",
    "a = [rd.randint(-100, 100) for i in range(n)]\n",
    "\n",
    "b = sorted(a) # Возвращает новый отсортированный список\n",
    "print(b)\n",
    "\n",
    "c = sorted(a, reverse=True) # Сортирует в обратном порядке\n",
    "print(c)\n",
    "\n",
    "e = sorted(a, key=lambda x: abs(x)) # Сортирует по ключу, в данном случае по абсолютному значению\n",
    "print(e)\n",
    "\n",
    "a.sort() # Сортирует список на месте, ничего не возвращает\n",
    "print(a)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "9b186915",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "[-98, -96, -92, -60, -42, -32, -18, -10, -10, 42, 64, 78, 98]\n"
     ]
    }
   ],
   "source": [
    "# метод filter\n",
    "\n",
    "f = filter(lambda x: x % 2 == 0, a) # Фильтрует элементы, оставляя только четные\n",
    "print(list(f))"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8966f584",
   "metadata": {},
   "source": [
    "# Операции со строками"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "id": "886e6200",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['fefef', '', '', '', '', 'egege', 'wpdwpfwof', '', '', '', 'eijoifwmfkwmfl', '', '', '', 'dwpdwpekwp']\n",
      "['fefef', 'egege', 'wpdwpfwof', 'eijoifwmfkwmfl', 'dwpdwpekwp']\n",
      "['Fefef', 'Egege', 'Wpdwpfwof', 'Eijoifwmfkwmfl', 'Dwpdwpekwp']\n",
      "Fefef Egege Wpdwpfwof Eijoifwmfkwmfl Dwpdwpekwp\n"
     ]
    }
   ],
   "source": [
    "s = \"fefef     egege wpdwpfwof    eijoifwmfkwmfl    dwpdwpekwp\"\n",
    "s1 = s.split(' ') # Разделяет строку по пробелам и преовращает в список слов\n",
    "print(s1)\n",
    "\n",
    "s2 = list(filter(lambda x: x, s1))\n",
    "print(s2)\n",
    "\n",
    "s3 = [x.capitalize() for x in s2] # Преобразует каждое слово в строку с заглавной первой буквой\n",
    "print(s3)\n",
    "\n",
    "s4 = ' '.join(s3) # Соединяет элементы списка в строку, используя ' ' в качестве разделителя\n",
    "print(s4)\n",
    "# print(' '.join(['a', 'b', 'c'])) # Соединяет элементы списка в строку, используя пробел в качестве разделителя"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "41ab72cf",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Hello, World!\n"
     ]
    }
   ],
   "source": [
    "st = '    Hello, World!    '\n",
    "print(st.strip()) # Удаляет пробелы в начале и конце строки"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "7ff78577",
   "metadata": {},
   "source": [
    "# Распаковка и запаковка"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "id": "d39d6026",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "3.0\n"
     ]
    }
   ],
   "source": [
    "def average(*nums):\n",
    "    return sum(nums) / len(nums) if nums else None\n",
    "\n",
    "print(average(1, 2, 3, 4, 5)) # Вывод: 3.0"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "e3997fbd",
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "<a href=\"https://ada-dev.ru\" target=\"_blank\"></a>\n"
     ]
    }
   ],
   "source": [
    "# Функция, которая принимает первым аргументом тег, а затем именованные параметры, и возвращает строку в виде HTML-тега с этими параметрами\n",
    "def create_html(tag, **attributes):\n",
    "    attr_str = ' '.join(f'{key}=\"{value}\"' for key, value in attributes.items())\n",
    "    return f'<{tag} {attr_str}></{tag}>'\n",
    "\n",
    "print(create_html('a', href='https://ada-dev.ru', target='_blank'))"
   ]
  }
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