{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "e3443919",
   "metadata": {},
   "source": [
    "# 15-04 · Мини-проект — дневник заметок\n",
    "\n",
    "Практика к разделу [«Мини-проект — знакомство с файлами»](../../site/chapters/glava-15/15-04-mini-proekt-itogi.html)."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "852e2868",
   "metadata": {},
   "source": [
    "## Цель\n",
    "\n",
    "Собрать чтение и запись в одном мини-проекте."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "82dcae19",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-14T20:58:56.115403Z",
     "iopub.status.busy": "2026-08-14T20:58:56.115243Z",
     "iopub.status.idle": "2026-08-14T20:58:56.137696Z",
     "shell.execute_reply": "2026-08-14T20:58:56.137219Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Готово к новым заметкам.\n"
     ]
    }
   ],
   "source": [
    "from pathlib import Path\n",
    "\n",
    "# начинаем с чистого файла заметок для повторяемости примера\n",
    "Path(\"zametki.txt\").unlink(missing_ok=True)\n",
    "print(\"Готово к новым заметкам.\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ee08750b",
   "metadata": {},
   "source": [
    "## Про input() в этом ноутбуке\n",
    "\n",
    "Этот ноутбук выполняется автоматически, поэтому `input()` временно подменён на заранее заготовленные ответы."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "da4e525b",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-14T20:58:56.138698Z",
     "iopub.status.busy": "2026-08-14T20:58:56.138587Z",
     "iopub.status.idle": "2026-08-14T20:58:56.140725Z",
     "shell.execute_reply": "2026-08-14T20:58:56.140388Z"
    }
   },
   "outputs": [],
   "source": [
    "_answers = iter(['Первая заметка'])\n",
    "\n",
    "def input(prompt=\"\"):\n",
    "    answer = next(_answers)\n",
    "    print(prompt + answer)\n",
    "    return answer"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b21fc0d6",
   "metadata": {},
   "source": [
    "## Рабочий пример"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "d48b37d4",
   "metadata": {
    "execution": {
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     "iopub.status.busy": "2026-08-14T20:58:56.141741Z",
     "iopub.status.idle": "2026-08-14T20:58:56.145095Z",
     "shell.execute_reply": "2026-08-14T20:58:56.144624Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Новая заметка: Первая заметка\n",
      "Все заметки:\n",
      "- Первая заметка\n"
     ]
    }
   ],
   "source": [
    "from pathlib import Path\n",
    "\n",
    "fajl_zametok = Path(\"zametki.txt\")\n",
    "\n",
    "novaya_zametka = input(\"Новая заметка: \")\n",
    "\n",
    "with fajl_zametok.open(\"a\") as f:\n",
    "    f.write(novaya_zametka + \"\\n\")\n",
    "\n",
    "print(\"Все заметки:\")\n",
    "with fajl_zametok.open(\"r\") as f:\n",
    "    for line in f:\n",
    "        print(\"-\", line.strip())"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "5cf76b8a",
   "metadata": {},
   "source": [
    "## Задание ★★ Самостоятельная задача — ещё одна заметка (проверка дозаписи)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "56c30da1",
   "metadata": {},
   "source": [
    "## Про input() в этом ноутбуке\n",
    "\n",
    "Этот ноутбук выполняется автоматически, поэтому `input()` временно подменён на заранее заготовленные ответы."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "f57b2f2b",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-14T20:58:56.146065Z",
     "iopub.status.busy": "2026-08-14T20:58:56.145942Z",
     "iopub.status.idle": "2026-08-14T20:58:56.148069Z",
     "shell.execute_reply": "2026-08-14T20:58:56.147657Z"
    }
   },
   "outputs": [],
   "source": [
    "_answers = iter(['Вторая заметка'])\n",
    "\n",
    "def input(prompt=\"\"):\n",
    "    answer = next(_answers)\n",
    "    print(prompt + answer)\n",
    "    return answer"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "846c2a7e",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-14T20:58:56.149187Z",
     "iopub.status.busy": "2026-08-14T20:58:56.148996Z",
     "iopub.status.idle": "2026-08-14T20:58:56.152043Z",
     "shell.execute_reply": "2026-08-14T20:58:56.151655Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Новая заметка: Вторая заметка\n",
      "Все заметки:\n",
      "1. Первая заметка\n",
      "2. Вторая заметка\n"
     ]
    }
   ],
   "source": [
    "from pathlib import Path\n",
    "\n",
    "fajl_zametok = Path(\"zametki.txt\")\n",
    "novaya_zametka = input(\"Новая заметка: \")\n",
    "\n",
    "with fajl_zametok.open(\"a\") as f:\n",
    "    f.write(novaya_zametka + \"\\n\")\n",
    "\n",
    "print(\"Все заметки:\")\n",
    "with fajl_zametok.open(\"r\") as f:\n",
    "    for i, line in enumerate(f, start=1):\n",
    "        print(f\"{i}. {line.strip()}\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "713b80ea",
   "metadata": {},
   "source": [
    "## Проверка результата"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "417670b9",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-14T20:58:56.153162Z",
     "iopub.status.busy": "2026-08-14T20:58:56.153058Z",
     "iopub.status.idle": "2026-08-14T20:58:56.155599Z",
     "shell.execute_reply": "2026-08-14T20:58:56.155127Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Обе заметки сохранились в правильном порядке.\n"
     ]
    }
   ],
   "source": [
    "from pathlib import Path\n",
    "\n",
    "lines = Path(\"zametki.txt\").read_text().splitlines()\n",
    "assert lines == [\"Первая заметка\", \"Вторая заметка\"]\n",
    "print(\"Обе заметки сохранились в правильном порядке.\")"
   ]
  }
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