0223.ipynb

{
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  "nbformat_minor": 0,
  "metadata": {
    "colab": {
      "provenance": []
    },
    "kernelspec": {
      "name": "python3",
      "display_name": "Python 3"
    },
    "language_info": {
      "name": "python"
    }
  },
  "cells": [
    {
      "cell_type": "markdown",
      "source": [
        "# 범위"
      ],
      "metadata": {
        "id": "SAceNS3WEUOb"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 1) 끝번호, 시작 번호 생략(= 처음부터)\n",
        "range(10) # 10번 반복\n",
        "list(range(10))\n",
        "# range(9+1)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "vuFRkNiWAj1o",
        "outputId": "44b8b35c-0268-46bc-92e8-9a0daa8873ae"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]"
            ]
          },
          "metadata": {},
          "execution_count": 1
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# for 반복문\n",
        "for i in range(10):\n",
        "  print(i) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
        "  print(\"반복\") # 10번 반복"
      ],
      "metadata": {
        "id": "BmuPT5ynFXiV",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "1ab0ba80-9f24-4a49-99ef-3b9314f32d8e"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "0\n",
            "반복\n",
            "1\n",
            "반복\n",
            "2\n",
            "반복\n",
            "3\n",
            "반복\n",
            "4\n",
            "반복\n",
            "5\n",
            "반복\n",
            "6\n",
            "반복\n",
            "7\n",
            "반복\n",
            "8\n",
            "반복\n",
            "9\n",
            "반복\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 2) 시작 번호, 끝번호 & 간격이 1 (기본값)\n",
        "range(1,10) # 9번 반복\n",
        "list(range(1,10))\n",
        "# range(1,9+1)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "oChBuTNpEnbV",
        "outputId": "56b0e1b9-f1f9-4160-bc18-ce3c91b4ffa3"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[1, 2, 3, 4, 5, 6, 7, 8, 9]"
            ]
          },
          "metadata": {},
          "execution_count": 3
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "for i in range(1,10):\n",
        "  print(i) # [1, 2, 3, 4, 5, 6, 7, 8, 9]\n",
        "  print(\"반복\") # 9번 반복"
      ],
      "metadata": {
        "id": "9foeRoDiKMyJ",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "7203fb59-c7a8-41f1-a830-3127741e9afb"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "1\n",
            "반복\n",
            "2\n",
            "반복\n",
            "3\n",
            "반복\n",
            "4\n",
            "반복\n",
            "5\n",
            "반복\n",
            "6\n",
            "반복\n",
            "7\n",
            "반복\n",
            "8\n",
            "반복\n",
            "9\n",
            "반복\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 3) 시작 번호, 끝번호, 간격 2\n",
        "range(1,10, 2) # 5번 반복\n",
        "list(range(1,10, 2))\n",
        "# range(1,9+1,2)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "93AotHOgFIIj",
        "outputId": "c95c78a3-340d-4ae0-f62a-6b6f838dc123"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[1, 3, 5, 7, 9]"
            ]
          },
          "metadata": {},
          "execution_count": 5
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "for i in range(1,10, 2):\n",
        "  print(i) # [1, 3, 5, 7, 9]\n",
        "  print(\"반복\") # 5번 반복"
      ],
      "metadata": {
        "id": "_GDqekHyKlmE",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "b905f920-bf0a-4687-c0b8-f972cdd11361"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "1\n",
            "반복\n",
            "3\n",
            "반복\n",
            "5\n",
            "반복\n",
            "7\n",
            "반복\n",
            "9\n",
            "반복\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 매개변수는 정수형이어야 함\n",
        "n = 20\n",
        "range(n)"
      ],
      "metadata": {
        "id": "Gh6pl9I-4vim",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "55e2b350-b91b-48ae-83ce-94f3a4565d4b"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "range(0, 20)"
            ]
          },
          "metadata": {},
          "execution_count": 7
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "range(n / 2) # float 형이기 때문에 에러 발생"
      ],
      "metadata": {
        "id": "dN01xuZ9Aba0",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 149
        },
        "outputId": "a5be1407-953e-449f-dbc1-8b8009b84086"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "error",
          "ename": "TypeError",
          "evalue": "'float' object cannot be interpreted as an integer",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-8-6a0b24f176cd>\u001b[0m in \u001b[0;36m<cell line: 1>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mrange\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mn\u001b[0m \u001b[0;34m/\u001b[0m \u001b[0;36m2\u001b[0m\u001b[0;34m)\u001b[0m \u001b[0;31m# float 형이기 때문에 에러 발생\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mTypeError\u001b[0m: 'float' object cannot be interpreted as an integer"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# int형으로 만들면 다시 출력 가능\n",
        "# 몫\n",
        "range(n // 2)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "Fk9B9goFAgp_",
        "outputId": "0fd65b05-de73-4911-afa6-5ce60a0d12bd"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "range(0, 10)"
            ]
          },
          "metadata": {},
          "execution_count": 9
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 나머지\n",
        "range(n % 6)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "vubj5pDkzs5M",
        "outputId": "d324a943-b6b8-477d-bfe5-3abd7d4fa4a0"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "range(0, 2)"
            ]
          },
          "metadata": {},
          "execution_count": 10
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 리스트와 범위로 반복문"
      ],
      "metadata": {
        "id": "bY2Bo9NABUMQ"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 인덱스 번호와 값을 동시에 출력\n",
        "list_a = [21,34,11,5,67]"
      ],
      "metadata": {
        "id": "jiYSxyhWA2G2"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "print(range(len(list_a)))\n",
        "print(list(range(len(list_a))))"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "Bv8kQwp0BuX1",
        "outputId": "9c1cb97b-35cd-4247-bf67-daf26ea05a34"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "range(0, 5)\n",
            "[0, 1, 2, 3, 4]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "for i in range(len(list_a)):\n",
        "  print(\"인덱스\", i, \"값\", list_a[i])"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "na-vpKkCCCKy",
        "outputId": "2ccd014c-a78d-4f1c-d313-d6645847fcc5"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "인덱스 0 값 21\n",
            "인덱스 1 값 34\n",
            "인덱스 2 값 11\n",
            "인덱스 3 값 5\n",
            "인덱스 4 값 67\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 역반복문"
      ],
      "metadata": {
        "id": "JO8nPiPCELjJ"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 역순으로 반복\n",
        "# range(0,5+1)\n",
        "for i in range(5, 1 - 1, -1): # range(5, 0 , -1)\n",
        "  print(i) # 5번 반복"
      ],
      "metadata": {
        "id": "gFDxadpvCdpZ",
        "outputId": "ac2f8c35-36f7-453d-e402-a58be70345b6",
        "colab": {
          "base_uri": "https://localhost:8080/"
        }
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n",
            "4\n",
            "3\n",
            "2\n",
            "1\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "for i in range(5, 1 - 1, -2): # range(5, 0 , -2)\n",
        "  print(i) # 3번 반복"
      ],
      "metadata": {
        "id": "cLWy4YOSB1iJ",
        "outputId": "0cb283cf-b112-4d1a-8e31-6c3388d4d00f",
        "colab": {
          "base_uri": "https://localhost:8080/"
        }
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n",
            "3\n",
            "1\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "for i in reversed(range(1,5+1)):\n",
        "  print(i)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "x7Pz1y0ABwQQ",
        "outputId": "42609378-460b-4002-c485-1888adf38e6b"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n",
            "4\n",
            "3\n",
            "2\n",
            "1\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 역순으로 반복\n",
        "# range(0,5+1)\n",
        "for i in range(5, -1, -1): # range(5, -1 , -1) 끝자리 0까지 가려면 -1 입력해야함.\n",
        "  print(i) # 5번 반복"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "_1UPi92jIa7f",
        "outputId": "43bb32b8-3a57-499e-c585-ec12c2a48051"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n",
            "4\n",
            "3\n",
            "2\n",
            "1\n",
            "0\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 중첩 반복문으로 피라미드 만들기"
      ],
      "metadata": {
        "id": "pbizgARsXPpV"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 1)\n",
        "output = \"\"\n",
        "\n",
        "for i in range(1, 10):\n",
        "    for j in range(0, i):\n",
        "        output += \"*\"\n",
        "    output += \"\\n\"\n",
        "\n",
        "print(output)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "P0R28Qxhmbee",
        "outputId": "6675609e-0762-49b3-9d58-bedf4f209bfc"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "*\n",
            "**\n",
            "***\n",
            "****\n",
            "*****\n",
            "******\n",
            "*******\n",
            "********\n",
            "*********\n",
            "\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 2) 전체 피라미드 만들기\n",
        "\n",
        "output = \"\"\n",
        "for i in range(1,15):\n",
        "  for j in range(14, i, -1):\n",
        "    output += \" \"\n",
        "  for k in range(0, 2*i -1):\n",
        "    output += \"*\"\n",
        "  output += \"\\n\"\n",
        "\n",
        "print(output)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "CsZK3xXxJmbD",
        "outputId": "29913918-39d8-41ce-f790-54160fa84b7e"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "             *\n",
            "            ***\n",
            "           *****\n",
            "          *******\n",
            "         *********\n",
            "        ***********\n",
            "       *************\n",
            "      ***************\n",
            "     *****************\n",
            "    *******************\n",
            "   *********************\n",
            "  ***********************\n",
            " *************************\n",
            "***************************\n",
            "\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "output = \"\"\n",
        "\n",
        "for i in range(1, 15):\n",
        "    for j in range(i, 15):\n",
        "        output += ' '\n",
        "    for k in range(0, 2 * i - 1):\n",
        "        output += '*'\n",
        "    output += '\\n'\n",
        "\n",
        "print(output)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "SG5jHDaZCT9i",
        "outputId": "854634bd-4c6a-476a-cbb1-2eeec7d07fea"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "              *\n",
            "             ***\n",
            "            *****\n",
            "           *******\n",
            "          *********\n",
            "         ***********\n",
            "        *************\n",
            "       ***************\n",
            "      *****************\n",
            "     *******************\n",
            "    *********************\n",
            "   ***********************\n",
            "  *************************\n",
            " ***************************\n",
            "\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [],
      "metadata": {
        "id": "QYRRRHMDMzNM"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "# 반복문 while"
      ],
      "metadata": {
        "id": "Ad6sFwSNG6dZ"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 무한 루프"
      ],
      "metadata": {
        "id": "o_8xzkI_HwNn"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "while True:\n",
        "    print(\".\") # print는 끝의 end 함수가 무조건 \\n이라서 이렇게 나옴.\n",
        "# 강제 종료 ctrl + m + i"
      ],
      "metadata": {
        "id": "QxsW0HIIFhUL",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 1000
        },
        "outputId": "68b8b836-fdd8-41a1-cda1-b87fad916fd0"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "\u001b[1;30;43m스트리밍 출력 내용이 길어서 마지막 5000줄이 삭제되었습니다.\u001b[0m\n",
            ".\n",
            ".\n",
            ".\n",
            ".\n",
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            "."
          ]
        },
        {
          "output_type": "error",
          "ename": "KeyboardInterrupt",
          "evalue": "",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mKeyboardInterrupt\u001b[0m                         Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-6-ad1ca1dc1865>\u001b[0m in \u001b[0;36m<cell line: 1>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      3\u001b[0m     \u001b[0;31m# 기본적으로 end가 \"\\n\"이라 줄바꿈이 일어나는데\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      4\u001b[0m     \u001b[0;31m# 빈 문자열 \"\"로 바꿔서 줄바꿈이 일어나지 않게 합니다.\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 5\u001b[0;31m     \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\".\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/ipykernel/iostream.py\u001b[0m in \u001b[0;36mwrite\u001b[0;34m(self, string)\u001b[0m\n\u001b[1;32m    400\u001b[0m             \u001b[0mis_child\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m(\u001b[0m\u001b[0;32mnot\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_is_master_process\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    401\u001b[0m             \u001b[0;31m# only touch the buffer in the IO thread to avoid races\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 402\u001b[0;31m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpub_thread\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mschedule\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;32mlambda\u001b[0m \u001b[0;34m:\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_buffer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mwrite\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mstring\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    403\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mis_child\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    404\u001b[0m                 \u001b[0;31m# mp.Pool cannot be trusted to flush promptly (or ever),\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/ipykernel/iostream.py\u001b[0m in \u001b[0;36mschedule\u001b[0;34m(self, f)\u001b[0m\n\u001b[1;32m    201\u001b[0m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_events\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mappend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mf\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    202\u001b[0m             \u001b[0;31m# wake event thread (message content is ignored)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 203\u001b[0;31m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_event_pipe\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34mb''\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    204\u001b[0m         \u001b[0;32melse\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    205\u001b[0m             \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/zmq/sugar/socket.py\u001b[0m in \u001b[0;36msend\u001b[0;34m(self, data, flags, copy, track, routing_id, group)\u001b[0m\n\u001b[1;32m    616\u001b[0m                 )\n\u001b[1;32m    617\u001b[0m             \u001b[0mdata\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mgroup\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mgroup\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 618\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0msuper\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mdata\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mflags\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mflags\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mcopy\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mcopy\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtrack\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mtrack\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    619\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    620\u001b[0m     def send_multipart(\n",
            "\u001b[0;32mzmq/backend/cython/socket.pyx\u001b[0m in \u001b[0;36mzmq.backend.cython.socket.Socket.send\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;32mzmq/backend/cython/socket.pyx\u001b[0m in \u001b[0;36mzmq.backend.cython.socket.Socket.send\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;32mzmq/backend/cython/socket.pyx\u001b[0m in \u001b[0;36mzmq.backend.cython.socket._send_copy\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/zmq/backend/cython/checkrc.pxd\u001b[0m in \u001b[0;36mzmq.backend.cython.checkrc._check_rc\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;31mKeyboardInterrupt\u001b[0m: "
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "while True:\n",
        "    print(\".\", end=\"\")"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 380
        },
        "id": "fi5HQ5Wodr8M",
        "outputId": "8cb834c6-3859-4c81-80aa-6c98ac7b4296"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            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          ]
        },
        {
          "output_type": "error",
          "ename": "KeyboardInterrupt",
          "evalue": "",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mKeyboardInterrupt\u001b[0m                         Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-20-1712ec1c19ae>\u001b[0m in \u001b[0;36m<cell line: 1>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[0;32mwhile\u001b[0m \u001b[0;32mTrue\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 2\u001b[0;31m     \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m\".\"\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mend\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0;34m\"\"\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/ipykernel/iostream.py\u001b[0m in \u001b[0;36mwrite\u001b[0;34m(self, string)\u001b[0m\n\u001b[1;32m    400\u001b[0m             \u001b[0mis_child\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0;34m(\u001b[0m\u001b[0;32mnot\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_is_master_process\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    401\u001b[0m             \u001b[0;31m# only touch the buffer in the IO thread to avoid races\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 402\u001b[0;31m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mpub_thread\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mschedule\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;32mlambda\u001b[0m \u001b[0;34m:\u001b[0m \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_buffer\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mwrite\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mstring\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    403\u001b[0m             \u001b[0;32mif\u001b[0m \u001b[0mis_child\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    404\u001b[0m                 \u001b[0;31m# mp.Pool cannot be trusted to flush promptly (or ever),\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/ipykernel/iostream.py\u001b[0m in \u001b[0;36mschedule\u001b[0;34m(self, f)\u001b[0m\n\u001b[1;32m    201\u001b[0m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_events\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mappend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mf\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    202\u001b[0m             \u001b[0;31m# wake event thread (message content is ignored)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 203\u001b[0;31m             \u001b[0mself\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0m_event_pipe\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34mb''\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    204\u001b[0m         \u001b[0;32melse\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    205\u001b[0m             \u001b[0mf\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/zmq/sugar/socket.py\u001b[0m in \u001b[0;36msend\u001b[0;34m(self, data, flags, copy, track, routing_id, group)\u001b[0m\n\u001b[1;32m    616\u001b[0m                 )\n\u001b[1;32m    617\u001b[0m             \u001b[0mdata\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mgroup\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mgroup\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 618\u001b[0;31m         \u001b[0;32mreturn\u001b[0m \u001b[0msuper\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0msend\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mdata\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mflags\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mflags\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mcopy\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mcopy\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0mtrack\u001b[0m\u001b[0;34m=\u001b[0m\u001b[0mtrack\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    619\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    620\u001b[0m     def send_multipart(\n",
            "\u001b[0;32mzmq/backend/cython/socket.pyx\u001b[0m in \u001b[0;36mzmq.backend.cython.socket.Socket.send\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;32mzmq/backend/cython/socket.pyx\u001b[0m in \u001b[0;36mzmq.backend.cython.socket.Socket.send\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;32mzmq/backend/cython/socket.pyx\u001b[0m in \u001b[0;36mzmq.backend.cython.socket._send_copy\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;32m/usr/local/lib/python3.10/dist-packages/zmq/backend/cython/checkrc.pxd\u001b[0m in \u001b[0;36mzmq.backend.cython.checkrc._check_rc\u001b[0;34m()\u001b[0m\n",
            "\u001b[0;31mKeyboardInterrupt\u001b[0m: "
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## while 문으로 for 문처럼 사용"
      ],
      "metadata": {
        "id": "sZkbopJtH9ph"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 숫자를 0 ~ 9 까지 출력\n",
        "for i in range(10):\n",
        "  print(i)"
      ],
      "metadata": {
        "id": "r7jbIKHHIFqe",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "3e542a95-af7c-45fc-8f41-01314be35abc"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "0\n",
            "1\n",
            "2\n",
            "3\n",
            "4\n",
            "5\n",
            "6\n",
            "7\n",
            "8\n",
            "9\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# while 문으로 재현\n",
        "i = 0\n",
        "while i < 10:\n",
        "  print(i)\n",
        "  i += 1"
      ],
      "metadata": {
        "id": "5W8FTCWaIR0s",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "a8ba3d77-c342-4256-e893-25c35dd8a0c3"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "0\n",
            "1\n",
            "2\n",
            "3\n",
            "4\n",
            "5\n",
            "6\n",
            "7\n",
            "8\n",
            "9\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 값이 있는 동안에 반복"
      ],
      "metadata": {
        "id": "MlDoMwsMJ9Bh"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "list_a = [1,2,3,2,4,2,5]\n",
        "print(list_a)\n",
        "\n",
        "value = 2\n",
        "while value in list_a: #리스트에 value 있으면\n",
        "  list_a.remove(value) #지워라\n",
        "  print(list_a) #중간 결과 보기 위해서\n",
        "\n",
        "print(list_a)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "yL5EkgvVIsvs",
        "outputId": "3446eec0-36b6-4c3f-bd59-aefa11687e7e"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[1, 2, 3, 2, 4, 2, 5]\n",
            "[1, 3, 2, 4, 2, 5]\n",
            "[1, 3, 4, 2, 5]\n",
            "[1, 3, 4, 5]\n",
            "[1, 3, 4, 5]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "list_a = [1,2,3,2,4,2,5]\n",
        "value = 2\n",
        "while value in list_a:\n",
        "  list_a.remove(value)\n",
        "\n",
        "print(list_a)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "l0wQW14IJEwM",
        "outputId": "b7888bd2-87b3-4627-9815-1b286f094e5e"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[1, 3, 4, 5]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 시간 기반으로 반복"
      ],
      "metadata": {
        "id": "61c3IY7lNqny"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 유닉스 타임\n",
        "import time\n",
        "time.time()"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "xpq9K7BlJSa0",
        "outputId": "f23f5172-f23f-4aac-ab0f-4e0fea84b79e"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "1708647152.075409"
            ]
          },
          "metadata": {},
          "execution_count": 25
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "import time\n",
        "number = 0\n",
        "target = time.time() + 3 #1초 +3초\n",
        "while time.time() < target:#4초 보다 작을때 -> 3초\n",
        "  number += 1\n",
        "print(number)\n",
        "# 3초 동안 반복한 횟수"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "3EdWONmNNtmC",
        "outputId": "36db537e-4326-42e2-9e12-9d6f2e4994a3"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "7804487\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## break / continue"
      ],
      "metadata": {
        "id": "1UZCXCmoOc1S"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 반복 종료\n",
        "i = 0\n",
        "while True:\n",
        "  print(i)\n",
        "  i += 1 # 반복 횟수 출력\n",
        "  yn = input(\"종료할까요? (종료를 원하시면 Y 나 y 를 입력하세요)> \")\n",
        "  if yn in [\"Y\", \"y\"]:\n",
        "    print(\"반복 종료\")\n",
        "    break"
      ],
      "metadata": {
        "id": "hJkpbYyLPB7C",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "a3b33d17-cd11-4c75-e36c-268efaa6508b"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "0\n",
            "종료할까요? (종료를 원하시면 Y 나 y 를 입력하세요)> 2\n",
            "1\n",
            "종료할까요? (종료를 원하시면 Y 나 y 를 입력하세요)> 1\n",
            "2\n",
            "종료할까요? (종료를 원하시면 Y 나 y 를 입력하세요)> 7\n",
            "3\n",
            "종료할까요? (종료를 원하시면 Y 나 y 를 입력하세요)> ㅛ\n",
            "4\n",
            "종료할까요? (종료를 원하시면 Y 나 y 를 입력하세요)> y\n",
            "반복 종료\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 현재 반복 생략하고 다음 반복으로\n",
        "list_a = [100, 20, 150, 50, 200]\n",
        "for i in list_a:\n",
        "  if i < 100: # 이조건을 만족하면\n",
        "    continue # 밑에 것을 안하고 건너뛰기 다시 시작\n",
        "  print(i)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "Uj4cv9iBQRKB",
        "outputId": "41308903-5e65-4049-a082-5d91e521552c"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "100\n",
            "150\n",
            "200\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "i = 0\n",
        "while i < 10:\n",
        "  if i % 2 == 0:#짝수면\n",
        "    i += 1 #더하고\n",
        "    continue #밑에것은 실행 x!\n",
        "  print(i)\n",
        "  i += 1 #여기는 if가 아니라 홀수까지 챙겨줘야함"
      ],
      "metadata": {
        "id": "HajVq3anifAS",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "ad3eda0a-f553-4553-ffe8-9cb475067403"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "1\n",
            "3\n",
            "5\n",
            "7\n",
            "9\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "#옛날에는 이렇게 썼삼..\n",
        "i = 0\n",
        "while i < 10:\n",
        "  if i % 2 == 0:\n",
        "    i += 1\n",
        "    continue\n",
        "  else: # continue 를 사용하면 이후 명령문의 들여쓰기 하지 않아도 됨\n",
        "    print(i)\n",
        "  i += 1"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "zhub5MiLLq3T",
        "outputId": "6a413177-8161-4429-8ca2-ad29773e4a87"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "1\n",
            "3\n",
            "5\n",
            "7\n",
            "9\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "# 함수"
      ],
      "metadata": {
        "id": "_QPNpqcYwiHf"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "def test(x):\n",
        "  return x + 2"
      ],
      "metadata": {
        "id": "BqEFN2P1wkf7"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "test(2)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "YN6nuR2oIPnG",
        "outputId": "9a961d76-7580-44ca-99ad-4af0ec88eaaa"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "4"
            ]
          },
          "metadata": {},
          "execution_count": 33
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 함수의 형태\n",
        "# 매개변수 O & 반환값 O\n",
        "def plus1(x, y):\n",
        "  return x + y\n",
        "# 매개변수 O & 반환값 X\n",
        "def plus2(x, y):\n",
        "  print(x + y)\n",
        "# 매개변수 X & 반환값 O\n",
        "def plus3():\n",
        "  return 2 + 3\n",
        "# 매개변수 X & 반환값 X\n",
        "def plus4():\n",
        "  print(2 + 3)"
      ],
      "metadata": {
        "id": "_sMTbP-AIRJk"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "a = plus1(2, 3)\n",
        "b = plus2(2, 3)\n",
        "c = plus3()\n",
        "d = plus4()"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "9wulBRskJLTZ",
        "outputId": "343fc11e-02d9-415b-c5ad-40602b69ff7e"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n",
            "5\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "a = plus1(2, 3)"
      ],
      "metadata": {
        "id": "dPtC3_E5P87U"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "b = plus2(2, 3) # print() 출력"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "_8B_fyfGP-hA",
        "outputId": "4d0ce63a-4962-41e9-ac3f-59c639b592af"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "c = plus3()"
      ],
      "metadata": {
        "id": "zoWn86cEQAFu"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "d = plus4() # print() 출력"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "D2lHil8XQELS",
        "outputId": "8a530b78-832a-4607-9a66-742383b7dfe3"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "print(a)\n",
        "print(b) # 반환값이 없으면 None\n",
        "print(c)\n",
        "print(d) # 반환값이 없으면 None"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "6kvVnU2kPt6y",
        "outputId": "b4194871-4946-459f-aed4-c9595b9887cd"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "5\n",
            "None\n",
            "5\n",
            "None\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 파이썬 내장 함수 min, max, sum"
      ],
      "metadata": {
        "id": "7uW2wkw-KM0k"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "list_a = [1,2,3,4,5]\n",
        "print(min(list_a))\n",
        "print(max(list_a))\n",
        "print(sum(list_a))"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "ivtLE33DSkIy",
        "outputId": "61579b11-92f0-446e-b4fe-7503b7734f5d"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "1\n",
            "5\n",
            "15\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "print(min(1,2,3,4,5))\n",
        "print(max(1,2,3,4,5))\n",
        "# iterable / 가변매개변수 모두 허용"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "68KSrtGESyya",
        "outputId": "2521ee50-0ff7-41a0-f754-15f589c823b8"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "1\n",
            "5\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "print(sum([1,2,3,4,5])) # iterable - 반복이 가능한 형태로 매개변수에 입력해야 함"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "5BfWr-xDY-Ft",
        "outputId": "b4867348-34a6-4abd-c833-c52e48f52868"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "15\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "print(sum([1,2,3,4,5], 5)) # 시작 숫자를 5로 하면 5에서 시작해서 나머지를 더한다! 이렇게 생각해주면 됨 -> 키워드 매개변수\n",
        "print(sum([1,2,3,4,5], start = 5))"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "Q3IRwyB-bNNh",
        "outputId": "b936ae9e-ea9c-448f-d30f-827b5d515cb2"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "20\n",
            "20\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## reversed, reverse 함수"
      ],
      "metadata": {
        "id": "_urQUas9KRj5"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# reversed\n",
        "list_a = [1,2,3,4,5]\n",
        "list_b = reversed(list_a)\n",
        "print(list_a)\n",
        "print(list_b) # 이터레이터 객체\n",
        "print(list(list_b))\n",
        "# 역반복문\n",
        "for i in reversed(list_a):\n",
        "  print(i)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "VHIKLBzZTF0i",
        "outputId": "7fc633bf-4a85-47a1-a34c-2f4b8b8389e3"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[1, 2, 3, 4, 5]\n",
            "<list_reverseiterator object at 0x7f7ac24cece0>\n",
            "[5, 4, 3, 2, 1]\n",
            "5\n",
            "4\n",
            "3\n",
            "2\n",
            "1\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "temp = reversed([1, 2, 3, 4, 5])\n",
        "for i in temp:\n",
        "  print(\"first: {i}\", format(i))\n",
        "for i in temp:\n",
        "  print(\"second: {i}\", format(i)) # reversed 는 제너레이터라서 이 부분의 결과가 안나옴\n",
        "# 첫번째 반복문 결과만 나옴 => 함수의 결과가 제너레이터\n",
        "# reversed() 함수와 반복문을 함께 사용할 때는 함수의 결과를 temp 로 저장하여 사용하지 않고,\n",
        "# for 구문 내부에서 바로 사용하면 됨\n",
        "# 꺼내고 싶으면 next 함수를 써야함"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "QRWdwAt5ZE1m",
        "outputId": "b89b2268-07b9-4943-9859-1e3cb2268ebb"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "first: {i} 5\n",
            "first: {i} 4\n",
            "first: {i} 3\n",
            "first: {i} 2\n",
            "first: {i} 1\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 오류 수정\n",
        "temp = [1, 2, 3, 4, 5, 6]\n",
        "for i in reversed(temp):\n",
        "  print(\"first: {i}\", format(i))\n",
        "for i in reversed(temp):\n",
        "  print(\"second: {i}\", format(i))"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "NwyTR4Eybydj",
        "outputId": "59cc224e-4d17-4029-dedb-10f2e5980c9b"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "first: {i} 6\n",
            "first: {i} 5\n",
            "first: {i} 4\n",
            "first: {i} 3\n",
            "first: {i} 2\n",
            "first: {i} 1\n",
            "second: {i} 6\n",
            "second: {i} 5\n",
            "second: {i} 4\n",
            "second: {i} 3\n",
            "second: {i} 2\n",
            "second: {i} 1\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# reverse\n",
        "list_a = [1,2,3,4,5]\n",
        "list_b = list_a.reverse()\n",
        "print(list_a) # 파괴적 처리\n",
        "print(list_b) # 반환값이 없음"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "iWRI0gWXky0b",
        "outputId": "902b16de-e512-47c0-8844-c6556f85f3c4"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[5, 4, 3, 2, 1]\n",
            "None\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 이터레이터"
      ],
      "metadata": {
        "id": "rO1GdHjkExR9"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "a = [1,2,3]\n",
        "b = reversed(a)\n",
        "print(b)\n",
        "print(list(b))\n",
        "print(list(b)) # 제네레이터 = 코드 조금씩 실행 = 메모리 효율성"
      ],
      "metadata": {
        "id": "2kIfhFiwBHuA",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "15f9acd0-e8e8-47fb-df4a-0297c4ed85f7"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "<list_reverseiterator object at 0x7f7ac24cf910>\n",
            "[3, 2, 1]\n",
            "[]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "a = [1,2,3]\n",
        "b = list(reversed(a))\n",
        "print(b);print(b)"
      ],
      "metadata": {
        "id": "1BTwyRDAFLsG",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "36a8caa9-f7b7-46f6-b3bb-489c179b5961"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[3, 2, 1]\n",
            "[3, 2, 1]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "print(b)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "mjUFNK0WLnOX",
        "outputId": "6a00d4d2-9fc1-4d66-b98b-565360f05af2"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[3, 2, 1]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 제네레이터 함수 실행\n",
        "a = [1,2,3]\n",
        "b = reversed(a)\n",
        "print(next(b)) #앞에서 말한 것처럼 next쓰면 됨\n",
        "print(next(b))\n",
        "print(next(b))"
      ],
      "metadata": {
        "id": "KYHfNy9vFigv",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "5e6fe876-e538-4bc3-b5cc-1e178d3b7907"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "3\n",
            "2\n",
            "1\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "print(next(b)) #대신에 여기서는 next가 안나옴 저장이 안돼서"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 146
        },
        "id": "k3kGyI58Ly0x",
        "outputId": "610a5448-56ea-4634-ead1-1eb1d029d4ae"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "error",
          "ename": "StopIteration",
          "evalue": "",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mStopIteration\u001b[0m                             Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-54-0b064482c990>\u001b[0m in \u001b[0;36m<cell line: 1>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mprint\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mnext\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mb\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mStopIteration\u001b[0m: "
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 인덱스와 값"
      ],
      "metadata": {
        "id": "HJisNhQRKdb0"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 인덱스와 값을 동시에 출력 => 함수로 해결\n",
        "list_a = [21,34,11,5,67]"
      ],
      "metadata": {
        "id": "dJKEipkpUc-8"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "# 1) 리스트\n",
        "i = 0\n",
        "for j in list_a:\n",
        "  print(\"인덱스\", i, \"값\", j)\n",
        "  i += 1"
      ],
      "metadata": {
        "id": "gbwPp459URwr",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "01959b10-fe8c-43aa-dcb8-a44aeda1dc63"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "인덱스 0 값 21\n",
            "인덱스 1 값 34\n",
            "인덱스 2 값 11\n",
            "인덱스 3 값 5\n",
            "인덱스 4 값 67\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 2) 리스트 & 범위\n",
        "for i in range(len(list_a)):\n",
        "  print(\"인덱스\", i, \"값\", list_a[i])"
      ],
      "metadata": {
        "id": "9AMDsgsjTVKh",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "b57ce6a9-57a2-4050-a39a-5ce34614813f"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "인덱스 0 값 21\n",
            "인덱스 1 값 34\n",
            "인덱스 2 값 11\n",
            "인덱스 3 값 5\n",
            "인덱스 4 값 67\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 3) enumerate 함수 with 리스트\n",
        "list(enumerate(list_a)) # 튜플 형태로 반환"
      ],
      "metadata": {
        "id": "1p97rb_NWYCa",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "74b7bf41-f53e-4021-e830-e341ee52c8c8"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[(0, 21), (1, 34), (2, 11), (3, 5), (4, 67)]"
            ]
          },
          "metadata": {},
          "execution_count": 58
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "for i, j in enumerate(list_a):\n",
        "  print(\"인덱스\", i, \"값\", j)"
      ],
      "metadata": {
        "id": "Q8FaHLrFWhr9",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "909e1e0c-ff38-46a6-d884-739f31c2fbb2"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "인덱스 0 값 21\n",
            "인덱스 1 값 34\n",
            "인덱스 2 값 11\n",
            "인덱스 3 값 5\n",
            "인덱스 4 값 67\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 4) items 함수 with 딕셔너리 - enumerate의 딕셔너리에서의 활용과 같음 (key, value) 튜플 형태 출력\n",
        "# 키와 값을 동시에 출력\n",
        "sd_dic = {\n",
        "    \"이름\": \"정대만\",\n",
        "    \"나이\": 19,\n",
        "    \"키\": 183,\n",
        "    \"몸무게\": 70\n",
        "}\n",
        "sd_dic.items()"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "Lyi2HEArbgmF",
        "outputId": "802c4109-8ccd-475d-f46e-e00ffcb95d8b"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "dict_items([('이름', '정대만'), ('나이', 19), ('키', 183), ('몸무게', 70)])"
            ]
          },
          "metadata": {},
          "execution_count": 67
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "for i, j in sd_dic.items():\n",
        "  print(\"키\", i, \"값\", j)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "phO8DRbFb7w1",
        "outputId": "850dfa08-fba7-450d-8bc3-f9c1a029ce02"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "키 이름 값 정대만\n",
            "키 나이 값 19\n",
            "키 키 값 183\n",
            "키 몸무게 값 70\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# items 연습\n",
        "conni2 = {\n",
        "    'name' : 'Connie',\n",
        "    'face' : 'cute',\n",
        "    'height' : 158,\n",
        "    'weight' : 'secret',\n",
        "    'personality' : 'perfect',\n",
        "    'blood type' : 'AB',\n",
        "    'MBTI' : 'ENTJ'\n",
        "}\n",
        "\n",
        "conni2.items()"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "B6ypjp79u2nP",
        "outputId": "5824551b-1ba2-4331-f63f-4b2b134f2af4"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "dict_items([('name', 'Connie'), ('face', 'cute'), ('height', 158), ('weight', 'secret'), ('personality', 'perfect'), ('blood type', 'AB'), ('MBTI', 'ENTJ')])"
            ]
          },
          "metadata": {},
          "execution_count": 71
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 리스트 컴프리헨션"
      ],
      "metadata": {
        "id": "y6F9rD6ydTLb"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 리스트 컴프리헨션 문법을 모른다면\n",
        "list_a = []\n",
        "list_b = []\n",
        "for i in range(1,5+1):\n",
        "  list_a.append(i)\n",
        "  list_b.append(i ** 2)\n",
        "\n",
        "print(list_a);print(list_b)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "c4pI4hDCcWpU",
        "outputId": "68ab13c1-5c9e-4807-fb3b-2b897ee9f1c6"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[1, 2, 3, 4, 5]\n",
            "[1, 4, 9, 16, 25]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 리스트 컴프리헨션 문법으로 재현\n",
        "list_c = [i for i in range(1,5+1)]\n",
        "list_d = [i ** 2 for i in range(1,5+1)]\n",
        "print(list_c)\n",
        "print(list_d)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "L7mz90L9d7bA",
        "outputId": "da911d34-ed99-4c60-e0cf-d83e0082a468"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "[1, 2, 3, 4, 5]\n",
            "[1, 4, 9, 16, 25]\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 필터링 = 조건문 추가\n",
        "result = []\n",
        "for i in range(5):\n",
        "  if i % 2 == 1:\n",
        "    result.append(i)\n",
        "\n",
        "result"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "sHlaHQ7iEasA",
        "outputId": "69076e7c-4caa-4344-f02c-c9ccb4d8d461"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[1, 3]"
            ]
          },
          "metadata": {},
          "execution_count": 74
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "#리스트 컴프리헨션을 통해서 for 과 if 문을 대괄호로 묶을 수 있음\n",
        "result = [i for i in range(5) if i % 2 == 1]\n",
        "result"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "zVtmY6MwEpEz",
        "outputId": "6cae302b-6e6e-48ee-ed49-95fcae80bd1c"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[1, 3]"
            ]
          },
          "metadata": {},
          "execution_count": 75
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 과일만 리스트로 저장\n",
        "# 가독성을 위해 줄바꿈\n",
        "list_a = [\"사과\", \"참외\", \"수박\", \"토마토\"]\n",
        "fruit = [i # 표현식(값 표현)\n",
        "         for i in list_a # 반복문\n",
        "         if i != \"토마토\"] # 조건문\n",
        "print(fruit)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "Nw6xwFjWfZBd",
        "outputId": "5fd0d5e4-1a4f-49ea-ae50-379380dbc32a"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "['사과', '참외', '수박']\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 구문 내부에 여러 문자열 사용시 문제점"
      ],
      "metadata": {
        "id": "HX8RFDHy5MZA"
      }
    },
    {
      "cell_type": "markdown",
      "source": [
        "### 들여쓰기 문제"
      ],
      "metadata": {
        "id": "-xiVQadxHQ4f"
      }
    },
    {
      "cell_type": "code",
      "execution_count": 1,
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "9PuxClS24_0B",
        "outputId": "cc538f99-81c7-4130-d699-2811a8a72bee"
      },
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "정수를 입력하세요> 2\n",
            "  입력한 숫자는 2입니다.\n",
            "  2는 짝수입니다.  \n"
          ]
        }
      ],
      "source": [
        "# 홀수, 짝수 구분하는 프로그램\n",
        "number = int(input(\"정수를 입력하세요> \"))\n",
        "if number % 2 == 0: # 짝수\n",
        "#\\해서 들여쓰기 원치 않는 자동 들여쓰기를 방지했지만\n",
        "  print(\"\"\"\\\n",
        "  입력한 숫자는 {}입니다.\n",
        "  {}는 짝수입니다.\\\n",
        "  \"\"\".format(number, number))\n",
        "else: # 홀수\n",
        "  print(\"\"\"\\\n",
        "  입력한 숫자는 {}입니다.\n",
        "  {}는 홀수입니다.\\\n",
        "  \"\"\".format(number, number))\n",
        "# 같이 들여쓰기가 되는 문제점"
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 들여쓰기가 되는 문제를 해결해보자\n",
        "number = int(input(\"정수를 입력하세요> \"))\n",
        "if number % 2 == 0: # 짝수\n",
        "#결과값은 들여쓰기를 해결했지만, 실재 코드는 들여쓰기를 하면 안됨!\n",
        "  print(\"\"\"\\\n",
        "입력한 숫자는 {}입니다.\n",
        "{}는 짝수입니다.\\\n",
        "  \"\"\".format(number, number))\n",
        "else: # 홀수\n",
        "  print(\"\"\"\\\n",
        "입력한 숫자는 {}입니다.\n",
        "{}는 홀수입니다.\\\n",
        "  \"\"\".format(number, number))\n",
        "# 문장 안에서 들여쓰기 통일성이 없어짐 = 코드의 일관성이 없음 = 가독성이 떨어짐"
      ],
      "metadata": {
        "id": "zEJexvzs6u0W",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "09c5b071-207f-4576-de81-fafd1debb109"
      },
      "execution_count": 2,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "정수를 입력하세요> 32\n",
            "입력한 숫자는 32입니다.\n",
            "32는 짝수입니다.  \n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 문제 해결 = \\n 사용\n",
        "number = int(input(\"정수를 입력하세요> \"))\n",
        "if number % 2 == 0: # 짝수\n",
        "  print(\"입력한 숫자는 {}입니다.\\n{}는 짝수입니다.\".format(number, number)) # 이렇게 \\n 하면 바로 밑에 써지니까 이렇게 쓰면 코드도 깔끔하고 잘쓸 수 있음\n",
        "else: # 홀수\n",
        "  print(\"입력한 숫자는 {}입니다.\\n{}는 홀수입니다.\".format(number, number))"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "t1URK0w_7-hD",
        "outputId": "c7bfa500-4b9f-4d30-8dbc-ddbe0f73a3c8"
      },
      "execution_count": 3,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "정수를 입력하세요> 14\n",
            "입력한 숫자는 14입니다.\n",
            "14는 짝수입니다.\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "### 괄호로 문자열 연결하기"
      ],
      "metadata": {
        "id": "OMOFKAoxHZCO"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "# 소괄호로 문자 연결 => , 없이 사용해야 함!\n",
        "a = (\n",
        "    \"나는 \"\n",
        "    \"여름을 \"\n",
        "    \"좋아합니다\"\n",
        ")\n",
        "print(a)\n",
        "print(type(a)) #문자열"
      ],
      "metadata": {
        "id": "39Mn08BN_KMe",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "739bfe69-5761-41d0-af31-6cb47a31b34f"
      },
      "execution_count": 4,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "나는 여름을 좋아합니다\n",
            "<class 'str'>\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "a = (\n",
        "    \"나는 \",\n",
        "    \"여름을 \",\n",
        "    \"좋아합니다\"\n",
        ")\n",
        "print(a)\n",
        "print(type(a)) #문자열을 연결할 때에는 쉼표 없어야함! 있으면 튜플이 되어버림"
      ],
      "metadata": {
        "id": "d-J5nJ_N_chp",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "a0eef9b0-2a24-4ebe-a81a-2476725cec29"
      },
      "execution_count": 5,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "('나는 ', '여름을 ', '좋아합니다')\n",
            "<class 'tuple'>\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 한 줄이 아닌 여러 줄\n",
        "a = (\n",
        "    \"나는 \\n\"\n",
        "    \"여름을 \\n\"\n",
        "    \"좋아합니다\"\n",
        ")\n",
        "print(a)\n",
        "print(type(a))"
      ],
      "metadata": {
        "id": "PBTVCINP_4i0",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "66810472-53fa-45fc-e808-9d34483c338f"
      },
      "execution_count": 6,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "나는 \n",
            "여름을 \n",
            "좋아합니다\n",
            "<class 'str'>\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "#소괄호로 묶어서 문자를 합칠 수 있어서 print 내에 두개의 문자열을 쉼표 없이 그냥 넣었음!!!\n",
        "number = int(input(\"정수를 입력하세요> \"))\n",
        "if number % 2 == 0: # 짝수\n",
        "  print((\"입력한 숫자는 {}입니다.\\n\"\n",
        "         \"{}는 짝수입니다.\").format(number, number))\n",
        "else: # 홀수\n",
        "  print((\"입력한 숫자는 {}입니다.\\n\"\n",
        "         \"{}는 홀수입니다.\").format(number, number))"
      ],
      "metadata": {
        "id": "anJVbZnKANtx",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "0f2b92af-4ed4-482a-a74b-c5d903424ba5"
      },
      "execution_count": 7,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "정수를 입력하세요> 22\n",
            "입력한 숫자는 22입니다.\n",
            "22는 짝수입니다.\n"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "source": [
        "### join()"
      ],
      "metadata": {
        "id": "qc7tUfH59OU1"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "print(\"\".join([\"괄호로 \", \"문자열을 하나로 \", \"연결해보자\"]))"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "G4yKzmQjIXZt",
        "outputId": "f7813141-ef5e-44fc-87eb-4b025f30edda"
      },
      "execution_count": 9,
      "outputs": [
        {
          "output_type": "stream",
          "name": "stdout",
          "text": [
            "괄호로 문자열을 하나로 연결해보자\n"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 에러 해결 = 리스트 = 대괄호\n",
        "print(\"\".join([\"괄호로 \", \"문자열을 하나로 \", \"연결해보자\"]))"
      ],
      "metadata": {
        "id": "tMgi_bmmIBJP"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "print(\"-\".join([\"010\", \"1234\", \"5678\"]))\n",
        "print(\" \".join([\"010\", \"1234\", \"5678\"]))\n",
        "print(\"|\".join([\"010\", \"1234\", \"5678\"]))"
      ],
      "metadata": {
        "id": "SFSLHmFP8Yoi"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "number = int(input(\"정수를 입력하세요> \"))\n",
        "if number % 2 == 0: # 짝수\n",
        "  print(\"\\n\".join([\"입력한 숫자는 {}입니다.\", \"{}는 짝수입니다.\"]).format(number, number)) # 여기서 \\n으로 join 하면 각 문자열이 합쳐지고 자동으로 내려가게 됨\n",
        "else: # 홀수\n",
        "  print(\"\\n\".join([\"입력한 숫자는 {}입니다.\", \"{}는 홀수입니다.\"]).format(number, number))"
      ],
      "metadata": {
        "id": "h0tz_FMY9_W2"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "source": [
        "# 혼코\n",
        "output= [x\n",
        "    for x in range(1, 101)\n",
        "    if ((\"{:b}\".format(x)).count(\"0\"))==1]\n",
        "print(output)\n",
        "for i in output:\n",
        "  print(\"{} : {}\".format(i, \"{:b}\".format(i)))\n",
        "print(\"합계:\", sum(output))"
      ],
      "metadata": {
        "id": "CF32REAv1RGF"
      },
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "source": [
        "## 확인 문제"
      ],
      "metadata": {
        "id": "UKH6w4-1x3MD"
      }
    },
    {
      "cell_type": "code",
      "source": [
        "example_list = [\"A\", \"B\", \"C\"]\n",
        "example_list"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "22d170b0-8ae2-48a7-b971-d35b15661b1c",
        "id": "9ysshJ0byAY1"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "['A', 'B', 'C']"
            ]
          },
          "metadata": {},
          "execution_count": 8
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "example_list.enumerate()"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 149
        },
        "outputId": "74dd8b92-8b3a-4329-c9d8-b94bca7ea7b9",
        "id": "SgBUuekFyAY2"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "error",
          "ename": "AttributeError",
          "evalue": "'list' object has no attribute 'enumerate'",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mAttributeError\u001b[0m                            Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-9-f7cbbff606b4>\u001b[0m in \u001b[0;36m<cell line: 1>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mexample_list\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0menumerate\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mAttributeError\u001b[0m: 'list' object has no attribute 'enumerate'"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "enumerate(example_list)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "9N5nXEvnzebR",
        "outputId": "0a242a51-c65d-409a-da84-c655cbdd9ab0"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "<enumerate at 0x7df8775b84c0>"
            ]
          },
          "metadata": {},
          "execution_count": 10
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "example_dictionary = {\n",
        "    \"키A\": \"값A\",\n",
        "    \"키B\": \"값B\",\n",
        "    \"키C\": \"값C\",\n",
        "}\n",
        "example_dictionary.items()"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "b52e6d8b-a16b-41d4-dd79-5146d59456e7",
        "id": "NWG1VrYDx6Qo"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "dict_items([('키A', '값A'), ('키B', '값B'), ('키C', '값C')])"
            ]
          },
          "metadata": {},
          "execution_count": 11
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "items(example_dictionary)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 149
        },
        "outputId": "30286591-b295-47d9-83c1-a474351b6926",
        "id": "l4_ye3SRx6Qp"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "error",
          "ename": "NameError",
          "evalue": "name 'items' is not defined",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-12-09f948d176db>\u001b[0m in \u001b[0;36m<cell line: 1>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mitems\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mexample_dictionary\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mNameError\u001b[0m: name 'items' is not defined"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "\"{}\".format(10)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 36
        },
        "id": "0YaDUbdzzQg-",
        "outputId": "f7c5e77a-7ecf-42f8-b803-aa00126bc6a9"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "'10'"
            ],
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            }
          },
          "metadata": {},
          "execution_count": 13
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 2진수 변환\n",
        "\"{:b}\".format(10)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 36
        },
        "id": "K8LD2EmayfIk",
        "outputId": "a9a5005a-1461-4016-f890-8a85068103e1"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "'1010'"
            ],
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            }
          },
          "metadata": {},
          "execution_count": 14
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "int(\"1010\", 2)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "jz87FG7Xy2Jx",
        "outputId": "e3ca769d-a128-432b-ed06-ab9cc10dff0d"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "10"
            ]
          },
          "metadata": {},
          "execution_count": 15
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 8진수 변환\n",
        "\"{:o}\".format(10)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 36
        },
        "id": "csKsap9Xy_pg",
        "outputId": "c4a57e0b-ff64-4cb8-81b5-547c6590956c"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "'12'"
            ],
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            }
          },
          "metadata": {},
          "execution_count": 16
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "int(\"12\", 8)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "XYXCG_oczmkB",
        "outputId": "78c8515b-af68-4843-ec51-37093d370e5c"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "10"
            ]
          },
          "metadata": {},
          "execution_count": 17
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "# 16진수 변환\n",
        "\"{:x}\".format(10)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 36
        },
        "id": "GRm5m8WNzN_T",
        "outputId": "d133e134-f116-4fa9-db38-732ba8ffbe90"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "'a'"
            ],
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            }
          },
          "metadata": {},
          "execution_count": 18
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "int(\"a\", 16)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "QJO2mMuBtCdY",
        "outputId": "0db058ac-ab87-4986-d313-66f08884eeb4"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "10"
            ]
          },
          "metadata": {},
          "execution_count": 19
        }
      ]
    },
    {
      "cell_type": "code",
      "source": [
        "int(\"10\", 16)"
      ],
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "rDZV_bt3zifa",
        "outputId": "222f7659-0fe7-449e-b18b-7eff82e51363"
      },
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "16"
            ]
          },
          "metadata": {},
          "execution_count": 20
        }
      ]
    }
  ]
}