{
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  {
   "cell_type": "markdown",
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   "source": [
    "# 10-01 · Циклы for\n",
    "\n",
    "Практика к разделу [«Волшебные циклы! Циклы for»](../../site/chapters/glava-10/10-01-cikly-for.html)."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a00b6417",
   "metadata": {},
   "source": [
    "## Цель\n",
    "\n",
    "Освоить цикл for и range()."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b97495e4",
   "metadata": {},
   "source": [
    "## Рабочий пример"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "08872e16",
   "metadata": {
    "execution": {
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     "iopub.status.busy": "2026-08-16T20:12:43.592193Z",
     "iopub.status.idle": "2026-08-16T20:12:43.609758Z",
     "shell.execute_reply": "2026-08-16T20:12:43.609269Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "1\n",
      "2\n",
      "3\n",
      "4\n"
     ]
    }
   ],
   "source": [
    "for i in range(5):\n",
    "    print(i)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "1616e41c",
   "metadata": {},
   "source": [
    "## Эксперимент 1 — range с началом и концом"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "85f4bad9",
   "metadata": {
    "execution": {
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     "iopub.status.busy": "2026-08-16T20:12:43.610643Z",
     "iopub.status.idle": "2026-08-16T20:12:43.613035Z",
     "shell.execute_reply": "2026-08-16T20:12:43.612565Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "2\n",
      "3\n",
      "4\n",
      "5\n",
      "6\n",
      "7\n"
     ]
    }
   ],
   "source": [
    "for i in range(2, 8):\n",
    "    print(i)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a081d290",
   "metadata": {},
   "source": [
    "## Эксперимент 2 — range с шагом"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "0dc3a38e",
   "metadata": {
    "execution": {
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     "shell.execute_reply": "2026-08-16T20:12:43.615557Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0\n",
      "2\n",
      "4\n",
      "6\n",
      "8\n"
     ]
    }
   ],
   "source": [
    "for i in range(0, 10, 2):\n",
    "    print(i)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "44d09749",
   "metadata": {},
   "source": [
    "## Задание ★ Базовая практика\n",
    "\n",
    "Выведите таблицу умножения числа 7 (7×1 до 7×10)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "09fc52c8",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-16T20:12:43.616922Z",
     "iopub.status.busy": "2026-08-16T20:12:43.616820Z",
     "iopub.status.idle": "2026-08-16T20:12:43.618901Z",
     "shell.execute_reply": "2026-08-16T20:12:43.618547Z"
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   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "7 x 1 = 7\n",
      "7 x 2 = 14\n",
      "7 x 3 = 21\n",
      "7 x 4 = 28\n",
      "7 x 5 = 35\n",
      "7 x 6 = 42\n",
      "7 x 7 = 49\n",
      "7 x 8 = 56\n",
      "7 x 9 = 63\n",
      "7 x 10 = 70\n"
     ]
    }
   ],
   "source": [
    "for i in range(1, 11):\n",
    "    print(f\"7 x {i} = {7 * i}\")"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b06f0269",
   "metadata": {},
   "source": [
    "## Дополнительная задача ★★★\n",
    "\n",
    "Посчитайте сумму всех чисел от 1 до 100 циклом (без формулы)."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "c1270368",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-16T20:12:43.620126Z",
     "iopub.status.busy": "2026-08-16T20:12:43.619807Z",
     "iopub.status.idle": "2026-08-16T20:12:43.622376Z",
     "shell.execute_reply": "2026-08-16T20:12:43.621933Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "5050\n"
     ]
    }
   ],
   "source": [
    "total = 0\n",
    "for i in range(1, 101):\n",
    "    total += i\n",
    "print(total)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "9239d1dc",
   "metadata": {},
   "source": [
    "## Проверка результата"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "45af813e",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-08-16T20:12:43.623288Z",
     "iopub.status.busy": "2026-08-16T20:12:43.623182Z",
     "iopub.status.idle": "2026-08-16T20:12:43.625270Z",
     "shell.execute_reply": "2026-08-16T20:12:43.624913Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Верно: сумма чисел от 1 до 100 равна 5050.\n"
     ]
    }
   ],
   "source": [
    "assert sum(range(1, 101)) == 5050\n",
    "print(\"Верно: сумма чисел от 1 до 100 равна 5050.\")"
   ]
  }
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