1_python基本輸入與輸出20201026.ipynb

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      "name": "1_python基本輸入與輸出20201026.ipynb",
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        "<a href=\"https://colab.research.google.com/github/jake0213/python2020/blob/main/1_python%E5%9F%BA%E6%9C%AC%E8%BC%B8%E5%85%A5%E8%88%87%E8%BC%B8%E5%87%BA20201026.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
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    {
      "cell_type": "markdown",
      "metadata": {
        "id": "5xPvcpL97oMF"
      },
      "source": [
        "#鄭竣維在崑山科技大學受恩師龍大大洗禮\n",
        "20201026"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "0ynE7xesLMzb"
      },
      "source": [
        "# 1.基本輸入與輸出"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "FHYKyUOzCNGB"
      },
      "source": [
        "```\n",
        "標準輸入(stdin)與標準輸出(stdout)\n",
        "   python輸入:input()\n",
        "   python輸出: print()\n",
        "```\n",
        "```\n",
        "自主學習主題\n",
        "   python格式化輸出技術\n",
        "```\n",
        "```\n",
        "進階學習主題:\n",
        "[10]讀取檔案(txt,csv,xslx,json,...)與輸出到檔案\n",
        "[20]資料庫讀取與輸出\n",
        "```\n",
        "# 基礎輸入與輸出(Basic Input and Output)\n",
        "\n",
        "## 基本輸入:讀取使用者的輸入\n",
        "\n",
        "```\n",
        "使用input時，會從標準輸入(stdin)中讀取輸入資料\n",
        "這些資料是string字串型態{重要}\n",
        "stdin==Standard Input\n",
        "```"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "qE6a1xH9C98b"
      },
      "source": [
        "\n",
        "執行底下程式看看:\n",
        "```\n",
        "# -*- coding: utf-8 -*-\n",
        "x = input('Enter your name:')\n",
        "print('Hello, ' + x)\n",
        "\n",
        "a = input(\"請輸入：\")\n",
        "a\n",
        "```\n"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "Hx5kiEVrCn7D",
        "outputId": "ed011c77-8d4d-4788-f980-ed60d4fe30a6",
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          "base_uri": "https://localhost:8080/",
          "height": 54
        }
      },
      "source": [
        "# -*- coding: utf-8 -*-\n",
        "x = input('Enter your name:')\n",
        "print('Hello, ' + x)"
      ],
      "execution_count": 7,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "Enter your name:abc\n",
            "Hello, abc\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "GYV-423HE6uJ",
        "outputId": "6394f513-b80f-442b-de19-70b554d07494",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 54
        }
      },
      "source": [
        "a = input(\"請輸入：\")\n",
        "a\n"
      ],
      "execution_count": 8,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "請輸入：100\n"
          ],
          "name": "stdout"
        },
        {
          "output_type": "execute_result",
          "data": {
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            "text/plain": [
              "'100'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 8
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "25eyt1w9Diik"
      },
      "source": [
        "###  使用Python內建的type()函數顯示資料型態\n",
        "\n",
        "底下程式執行後結果為何?\n",
        "```\n",
        "type(a)\n",
        "```"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "aeCdu7lSFGq6",
        "outputId": "fb171497-2e56-42b0-eda0-f16a94ad602d",
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          "height": 35
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      },
      "source": [
        "type(a)\n"
      ],
      "execution_count": 9,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "str"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 9
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "BMuWFMZqDtKG"
      },
      "source": [
        "### 程式錯誤與更正\n",
        "```\n",
        "小明明正在學習python程式\n",
        "\n",
        "老師出了一題\n",
        "要輸入一個整數分數\n",
        "然後加15後\n",
        "輸出最後答案\n",
        "\n",
        "底下是小明明的python程式\n",
        "請指出底下的錯誤並更正\n",
        "```\n",
        "#### 小明明的python程式 執行後結果為何?\n",
        "```\n",
        "a = input(\"請輸入：\")\n",
        "a\n",
        "\n",
        "b = a+15\n",
        "b\n",
        "```\n"
      ]
    },
    {
      "cell_type": "code",
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        "outputId": "168d90d7-e081-46fe-efd8-d742a9c8e4de",
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          "base_uri": "https://localhost:8080/",
          "height": 54
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      },
      "source": [
        "a = input(\"請輸入：\")\n",
        "a"
      ],
      "execution_count": 10,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "請輸入：65\n"
          ],
          "name": "stdout"
        },
        {
          "output_type": "execute_result",
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              "'65'"
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          "metadata": {
            "tags": []
          },
          "execution_count": 10
        }
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    {
      "cell_type": "code",
      "metadata": {
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          "height": 190
        }
      },
      "source": [
        "b = a+15\n",
        "b"
      ],
      "execution_count": 13,
      "outputs": [
        {
          "output_type": "error",
          "ename": "TypeError",
          "evalue": "ignored",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mTypeError\u001b[0m                                 Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-13-85fa82382e69>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mb\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0ma\u001b[0m\u001b[0;34m+\u001b[0m\u001b[0;36m15\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m      2\u001b[0m \u001b[0mb\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
            "\u001b[0;31mTypeError\u001b[0m: must be str, not int"
          ]
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "RIDe5YfG_teI"
      },
      "source": [
        "```\n",
        "TypeError :資料型態(data type)錯誤\n",
        "```"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "LAh1-HGmEKMo"
      },
      "source": [
        "#### 更正的 小明明python程式\n",
        "```\n",
        "如何讀取使用者輸入的整數===>使用eval()函數\n",
        "            ===>也可以使用int()函數\n",
        "```\n",
        "底下程式執行後結果為何?\n",
        "```\n",
        "a = eval(input(\"請輸入：\"))\n",
        "a\n",
        "type(a)\n",
        "```"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "17pzhxJIQzQd",
        "outputId": "ed76bc0a-9eb6-4e1a-fa54-3d24f69cfbcf",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        }
      },
      "source": [
        "type(a)\n"
      ],
      "execution_count": 15,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "int"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 15
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "9N2DVhyIFjpI",
        "outputId": "3363332e-506a-4e79-9d40-69fc0abe5b9b",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 54
        }
      },
      "source": [
        "a = eval(input(\"請輸入：\"))\n",
        "a"
      ],
      "execution_count": 14,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "請輸入：65\n"
          ],
          "name": "stdout"
        },
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "65"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 14
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "lcfO6SimMzIm"
      },
      "source": [
        "寫下你更正的答案:"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "J0iJo1phBlyp",
        "outputId": "2c32f2cb-fd42-4522-c0af-5329e3d7b5a2",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 54
        }
      },
      "source": [
        "a = int(input(\"請輸入：\"))\n",
        "b = a + 15\n",
        "b\n"
      ],
      "execution_count": 17,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "請輸入：65\n"
          ],
          "name": "stdout"
        },
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "80"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 17
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "ojFW3LYnAhM_"
      },
      "source": [
        "#### 超級重要:一次輸入多（兩）個資料\n",
        "\n",
        "底下程式執行後結果為何?\n",
        "```\n",
        "a,b = eval(input(\"請輸入兩個數位：\"))\n",
        "a,b\n",
        "```"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "MKIHsnPpRDPi",
        "outputId": "29cedcfb-8efb-4074-f2d6-45b31e48eafa",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 154
        }
      },
      "source": [
        "a,b = eval(input(\"請輸入兩個數位：\"))\n",
        "a,b"
      ],
      "execution_count": 18,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "請輸入兩個數位：12 23\n"
          ],
          "name": "stdout"
        },
        {
          "output_type": "error",
          "ename": "SyntaxError",
          "evalue": "ignored",
          "traceback": [
            "\u001b[0;36m  File \u001b[0;32m\"<string>\"\u001b[0;36m, line \u001b[0;32m1\u001b[0m\n\u001b[0;31m    12 23\u001b[0m\n\u001b[0m        ^\u001b[0m\n\u001b[0;31mSyntaxError\u001b[0m\u001b[0;31m:\u001b[0m unexpected EOF while parsing\n"
          ]
        }
      ]
    }
  ]
}