{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "9ef7b284",
   "metadata": {},
   "source": [
    "# 05-21 · Obliczenia debugowania\n",
    "\n",
    "Praktyka do sekcji [„Debugowanie obliczeń”"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8fbad2f8",
   "metadata": {},
   "source": [
    "## Cel\n",
    "\n",
    "Znaleźć i naprawić błąd priorytetu działań w gotowym wzorze."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "bb51cc0e",
   "metadata": {},
   "source": [
    "## Typowy błąd\n",
    "\n",
    "Ten wzór miał policzyć średnią trzech ocen, ale zapomniał nawiasów — wynik jest błędny."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "e4f5a95e",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-16T12:03:00.261153Z",
     "iopub.status.busy": "2026-08-16T12:03:00.260959Z",
     "iopub.status.idle": "2026-08-16T12:03:00.293784Z",
     "shell.execute_reply": "2026-08-16T12:03:00.291947Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "10.0\n"
     ]
    }
   ],
   "source": [
    "ocenka1, ocenka2, ocenka3 = 4, 5, 3\n",
    "srednyaya_s_oshibkoj = ocenka1 + ocenka2 + ocenka3 / 3\n",
    "print(srednyaya_s_oshibkoj)   # 10.0 — неверно! это НЕ среднее трёх оценок"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3c300389",
   "metadata": {},
   "source": [
    "## Podstawowa praktyka zadań ★\n",
    "\n",
    "Popraw wzór tak, aby poprawnie obliczał średnią trzech punktów (dodaj nawiasy wokół sumy). Oczekiwane jest 4,0."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "e5379820",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-16T12:03:00.295324Z",
     "iopub.status.busy": "2026-08-16T12:03:00.295128Z",
     "iopub.status.idle": "2026-08-16T12:03:00.299557Z",
     "shell.execute_reply": "2026-08-16T12:03:00.298758Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "4.0\n"
     ]
    }
   ],
   "source": [
    "ocenka1, ocenka2, ocenka3 = 4, 5, 3\n",
    "srednyaya = (ocenka1 + ocenka2 + ocenka3) / 3\n",
    "print(srednyaya)"
   ]
  }
 ],
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