{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "786a1bf0",
   "metadata": {},
   "source": [
    "# 18-20 · Procedura aplikacji\n",
    "\n",
    "Praktyka do rozdziału [„Kolejność nakładania”](/pl/chapters/rozdzial-18/18-20-poryadok-sloev.html)."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "4c839748",
   "metadata": {},
   "source": [
    "## Cel\n",
    "\n",
    "Model tag_raise() i tag_lower() lista tam, gdzie ostatni element jest rysowany z góry."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b1db56c3",
   "metadata": {},
   "source": [
    "## Sprawa robocza"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "de154791",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-09-03T00:51:57.745553Z",
     "iopub.status.busy": "2026-09-03T00:51:57.745269Z",
     "iopub.status.idle": "2026-09-03T00:51:57.779844Z",
     "shell.execute_reply": "2026-09-03T00:51:57.779089Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "после podnyat(12): [13, 14, 12]\n",
      "после opustit(14): [14, 12, 13]\n"
     ]
    }
   ],
   "source": [
    "def podnyat(poryadok, item_id):\n",
    "    \"\"\"Аналог canvas.tag_raise(item_id) — переносит элемент в КОНЕЦ списка (наверх).\"\"\"\n",
    "    poryadok.remove(item_id)\n",
    "    poryadok.append(item_id)\n",
    "    return poryadok\n",
    "\n",
    "\n",
    "def opustit(poryadok, item_id):\n",
    "    \"\"\"Аналог canvas.tag_lower(item_id) — переносит элемент в НАЧАЛО списка (вниз).\"\"\"\n",
    "    poryadok.remove(item_id)\n",
    "    poryadok.insert(0, item_id)\n",
    "    return poryadok\n",
    "\n",
    "\n",
    "poryadok = [12, 13, 14]\n",
    "podnyat(poryadok, 12)\n",
    "print(\"после podnyat(12):\", poryadok)\n",
    "\n",
    "poryadok_vniz = [12, 13, 14]\n",
    "opustit(poryadok_vniz, 14)\n",
    "print(\"после opustit(14):\", poryadok_vniz)\n"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "744cba94",
   "metadata": {},
   "source": [
    "## Podstawowa praktyka zadań ★"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "6b0ed9ed",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-09-03T00:51:57.781138Z",
     "iopub.status.busy": "2026-09-03T00:51:57.780991Z",
     "iopub.status.idle": "2026-09-03T00:51:57.783967Z",
     "shell.execute_reply": "2026-09-03T00:51:57.783453Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Последний элемент списка — верхний в порядке наложения, первый — нижний.\n"
     ]
    }
   ],
   "source": [
    "assert poryadok == [13, 14, 12]\n",
    "assert poryadok_vniz == [14, 12, 13]\n",
    "\n",
    "poryadok2 = [1, 2, 3]\n",
    "podnyat(poryadok2, 2)\n",
    "assert poryadok2 == [1, 3, 2]\n",
    "opustit(poryadok2, 2)\n",
    "assert poryadok2 == [2, 1, 3], \"tag_lower опускает элемент под все остальные\"\n",
    "print(\"Последний элемент списка — верхний в порядке наложения, первый — нижний.\")\n"
   ]
  }
 ],
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