Python101.ipynb

{
  "nbformat": 4,
  "nbformat_minor": 0,
  "metadata": {
    "kernelspec": {
      "display_name": "Python 3",
      "language": "python",
      "name": "python3"
    },
    "language_info": {
      "codemirror_mode": {
        "name": "ipython",
        "version": 3
      },
      "file_extension": ".py",
      "mimetype": "text/x-python",
      "name": "python",
      "nbconvert_exporter": "python",
      "pygments_lexer": "ipython3",
      "version": "3.7.4"
    },
    "colab": {
      "name": "Python101.ipynb",
      "provenance": [],
      "include_colab_link": true
    }
  },
  "cells": [
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "view-in-github",
        "colab_type": "text"
      },
      "source": [
        "<a href=\"https://colab.research.google.com/github/tohnperfect/multivariate/blob/main/Python101.ipynb\" target=\"_parent\"><img src=\"https://colab.research.google.com/assets/colab-badge.svg\" alt=\"Open In Colab\"/></a>"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "FnRGDLEhLd-j"
      },
      "source": [
        "ตัวแปร variable"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "Jka8R_HUL60h"
      },
      "source": [
        "หลักการตั้งชื่อตัวแปรเบื้องต้น\r\n",
        "\r\n",
        "1.   ตั้งให้สื่อ\r\n",
        "2.   ภาษาอังกฤษ\r\n",
        "3.   ใช้ตัวเลขได้แต่ห้ามขึ้นต้นด้วยตัวเลข\r\n",
        "4.   ห้ามเว้นวรรค\r\n",
        "5.   ตัวเล็กกับตัวใหญ่ไม่เหมือนกัน"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "DOHWPXgvMn4E"
      },
      "source": [
        "มี output 2 mode : ออกหน้าจอ กับ เข้าไปเก็บในตัวแปร"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "JPYmzwcoMiDq",
        "outputId": "3defd6f2-df73-4546-de8d-be68a4f424d8"
      },
      "source": [
        "3.14159   # hashtag หรือ sharp # คือ comment  >>> อันนี้คือ output ที่ออกหน้าจอ"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "3.14159"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 34
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "XFI5uFHvLrCT"
      },
      "source": [
        "Pi = 3.14159   # อันนี้คือ output ที่เข้าไปอยู่ในตัวแปร"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "-NdBQY0TJ5ES",
        "outputId": "816738f1-a2fb-4092-c38a-a9f26de3648d"
      },
      "source": [
        "Pi"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "3.14159"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 36
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "WoYN4BS8J470",
        "outputId": "8fb6aab7-e7f7-4e56-ddcd-df656c7fc7b2"
      },
      "source": [
        "a = 1234567\r\n",
        "print(a)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "1234567\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "WZDJ9zooNl_P"
      },
      "source": [
        "# ชนิดของตัวแปร 3 ชนิด"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "4tWQGxlJOerF"
      },
      "source": [
        "### จำนวนเต็ม (integer, int)"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "S_u3f_SRJ44N",
        "outputId": "65fa70d1-560a-40e2-a475-67945ff31231"
      },
      "source": [
        "aaa = 1092\r\n",
        "print(aaa)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "1092\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "dI0sDRyiOw8M"
      },
      "source": [
        "### จำนวนจริง (float)"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "EFQ7VrQPJ41R",
        "outputId": "0a2c85d4-3b0a-4ffe-bd3f-c3bb45476855"
      },
      "source": [
        "bbb = 11.\r\n",
        "print(bbb)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "11.0\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "kXwYOj2QPBXV"
      },
      "source": [
        "### ตัวอักษร-ข้อความ (character และ text, string)"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "-e_-y70PJ4yZ",
        "outputId": "439527cd-7b4d-4987-8da3-0c13b5cb550e"
      },
      "source": [
        "ccc = '123456'   # เราใช้ single quote ' หรือ double quote \" ล้อมรอบตัวหนังสือเพื่อระบุว่าเป็น character-string\r\n",
        "print(ccc)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "123456\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "gBTUH9_SP8sL",
        "outputId": "4f5782b1-689c-44bf-81ba-cac5ef76642e"
      },
      "source": [
        "aaa + bbb  # float + int = float"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "1103.0"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 41
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 162
        },
        "id": "wbtPo5IUJ4vb",
        "outputId": "916df717-a464-4660-b6a6-625cabd6a76c"
      },
      "source": [
        "bbb + ccc"
      ],
      "execution_count": null,
      "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-42-a3916046ad1c>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mbbb\u001b[0m \u001b[0;34m+\u001b[0m \u001b[0mccc\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mTypeError\u001b[0m: unsupported operand type(s) for +: 'float' and 'str'"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "FuRXqjsUJ4sf",
        "outputId": "18699193-bc6f-4769-ffba-1bc26355f4e5"
      },
      "source": [
        "ddd = 'ธนพงศ์'\r\n",
        "print(ddd)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "ธนพงศ์\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "LRazcoUwQtzX"
      },
      "source": [
        "# การเปลี่ยนชนิดของตัวแปร variable casting"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "CUC8ln5TJ4pl",
        "outputId": "09176a10-7f15-4bdb-eee5-2a51679a962f"
      },
      "source": [
        "aaa + int(ccc)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "124548"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 44
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "JJ6b0GEtJ4mr",
        "outputId": "52018032-75d3-4f4f-9bb4-3870e264a495"
      },
      "source": [
        "aaa + float(ccc)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "124548.0"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 45
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "NBHziWE5J4jM",
        "outputId": "306431d9-a404-4d86-c547-215228a55d46"
      },
      "source": [
        "str(aaa)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'1092'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 46
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "DCsc4R9KJ3Gu"
      },
      "source": [
        "# การดำเนินการ Operation (Operators +,-,*,/,%)"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 162
        },
        "id": "FahcgJdhJ3Gu",
        "outputId": "7f24263a-e17c-4a77-dee9-3e9576e0d0fa"
      },
      "source": [
        "a+b"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "error",
          "ename": "NameError",
          "evalue": "ignored",
          "traceback": [
            "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
            "\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
            "\u001b[0;32m<ipython-input-47-ca730b97bf8a>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0ma\u001b[0m\u001b[0;34m+\u001b[0m\u001b[0mb\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mNameError\u001b[0m: name 'b' is not defined"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "QY7ckaXeJ4gN",
        "outputId": "c7d9c1f3-2330-4ed9-a0a3-81d31953b3e9"
      },
      "source": [
        "aaa + bbb"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "1103.0"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 48
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "2tNThbPGJ4VY",
        "outputId": "897cd6c1-650c-4801-a17c-569ee7d0567d"
      },
      "source": [
        "aaa - bbb"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "1081.0"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 49
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "VvE9t0j9J3Gu",
        "outputId": "3257b1b6-a508-489c-aa67-1804d48762d9"
      },
      "source": [
        "ab = aaa*bbb\r\n",
        "print(ab)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "12012.0\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "JW5-lnz7S5a8",
        "outputId": "09e2a481-fe1a-4730-f119-b0e68273bcad"
      },
      "source": [
        "ab + int(ccc)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "135468.0"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 51
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "u9KXbMyeJ3Gu"
      },
      "source": [
        "#### % คือหมาย modulo"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "lw9DDEhtJ3Gv",
        "outputId": "3d46f92e-6f93-42ef-d0f1-c072c6002ffc"
      },
      "source": [
        "5%3"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "2"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 52
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "MQU5WHmTTCjM",
        "outputId": "039353e7-bc95-4d36-f5f6-5a1c920095b7"
      },
      "source": [
        "7%3"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "1"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 53
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "fa8Cy421TQyv"
      },
      "source": [
        "### คำสั่ง print แบบพิเศษ (การ format string)"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "hUsMNU5MTMBZ",
        "outputId": "88af2b72-aaee-4f96-e837-e0f2588952e6"
      },
      "source": [
        "print('ตัวแปร') #สิ่งที่อยู่ข้างในวงเล็บคือ ตัวแปร และ string"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "ตัวแปร\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "N9TJUqyYTiaS",
        "outputId": "c823324f-6425-479f-c13e-eba91d688506"
      },
      "source": [
        "print(f'% คือการหารเอาเศษ เช่น 7%3 = {7%3}') # เพิ่ม f หน้า 'string' และใช้ {} ใส่ code"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "% คือการหารเอาเศษ เช่น 7%3 = 1\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "FiTszVZXTiW4",
        "outputId": "e439f800-3f3b-429b-c711-4e134880d024"
      },
      "source": [
        "print(f'% คือการหารเอาเศษ เช่น 7%3 = {7%3} \\\r\n",
        "    แต่\\n/ คือการหารปกติ เช่น 7/3 = {7/3}  \\\r\n",
        "    และ\\n// คือการหารเอาส่วน เช่น 7//3 = {7//3} \\\r\n",
        "    หรือ\\nใช้ int() เพื่อหารเอาส่วน เช่น int(7/3) = {int(7/3)}') # \\n คือการขึ้นบรรทัดใหม่ \\ ใช้ในการตัด code แต่ com จะไม่เห็น"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "% คือการหารเอาเศษ เช่น 7%3 = 1     แต่\n",
            "/ คือการหารปกติ เช่น 7/3 = 2.3333333333333335      และ\n",
            "// คือการหารเอาส่วน เช่น 7//3 = 2     หรือ\n",
            "ใช้ int() เพื่อหารเอาส่วน เช่น int(7/3) = 2\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "FHzvVDaWJ3Gw"
      },
      "source": [
        "## DATA STRUCTURE (โครงสร้างข้อมูล)"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "QP2rmfqvXOzx",
        "outputId": "1503eeb4-3748-4be8-c24b-95b1b10a22d9"
      },
      "source": [
        "[111,'c','งง',aaa]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[111, 'c', 'งง', 1092]"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 57
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "e5kIU3W-J3Gw"
      },
      "source": [
        "### List คือ การเอาข้อมูลหลายๆตัวมาเรียงต่อกัน \n",
        "#### list สามารถสร้างได้ 2 แบบ ดังนี้"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "hq7h4tj2J3Gw"
      },
      "source": [
        "#### แบบที่1 > square brackets"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "8Fnk8-I9J3Gw",
        "outputId": "2cc791b1-365e-4865-be97-bbf899d28959"
      },
      "source": [
        "list_a = []\r\n",
        "print(list_a)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "9R2jTTTQJ3Gw",
        "outputId": "4962c168-5eac-4d36-b569-9f3709c2f35f"
      },
      "source": [
        "list_b = [111,'c','งง',aaa]\r\n",
        "print(list_b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[111, 'c', 'งง', 1092]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "L7bQ_1JJbU0l"
      },
      "source": [
        "### ลำดับที่อยู่ใน list มีความสำคัญ (ลำดับใน list เริ่มจาก 0,1,2,...) "
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "Fy2Ju92hbTJe",
        "outputId": "513ed232-c012-44c5-fca7-89b3f780d1dc"
      },
      "source": [
        "list_b[2]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'งง'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 84
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "f_DgmUApJ3Gw"
      },
      "source": [
        "#### แบบที่2"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "pmBmmx92J3Gx",
        "outputId": "b0768371-c4b1-43fa-fd4e-826c15f207f8"
      },
      "source": [
        "list_c = list()\r\n",
        "print(list_c)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "oVe1jDU1J3Gx"
      },
      "source": [
        "## append() เพิ่มสมาชิกใน list"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "fLqpVjZzJ3Gx",
        "outputId": "ed757539-e28a-4096-dba0-cd9e3fdc930a"
      },
      "source": [
        "list_b.append('u')\n",
        "print(list_b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[111, 'c', 'งง', 1092, 'u']\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "kHW9ylc2ZFfD"
      },
      "source": [
        "ตัวที่อยู่ในวงเล็บหลังจากตัวแปร list เรียกว่า index ใช้สำหรับชี้ข้อมูลใน list \r\n",
        "\r\n",
        "(ชี้จากข้างหน้า,ชี้จากข้างหลัง)\r\n",
        "\r\n",
        "0 คือสมาชิกตัวแรก , -1 คือสมาชิกตัวสุดท้าย"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "gCFo2oDSYfwZ",
        "outputId": "65a3911a-3905-4b24-82d4-5e5691d32200"
      },
      "source": [
        "list_b[-1]   "
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'u'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 63
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "i-HVllkVJ3Gy"
      },
      "source": [
        "## String > list of characters"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "DNNnCnrUJ3Gy",
        "outputId": "ce1df72e-e925-41c0-8e11-e1f2f31854b5"
      },
      "source": [
        "t = 'python is easy'\n",
        "print(t)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "python is easy\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "h1gP1q5lJ3Gz",
        "outputId": "bfeebd6e-a0d7-47df-b662-84319f479c95"
      },
      "source": [
        "t[1]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'y'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 65
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "7I6FHLuwJ3Gz",
        "outputId": "d41f72cf-7709-454e-d948-8fc3ef12b4f7"
      },
      "source": [
        "t[-4]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'e'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 66
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "wAzxi-U7aGoa",
        "outputId": "91c05836-6aa7-477c-be9b-65679b250ae0"
      },
      "source": [
        "t[6]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "' '"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 67
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "678ayzRbaVYs"
      },
      "source": [
        "## จบ 5 มค 2021"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "z_s_nQ4VhbqL"
      },
      "source": [
        "# คาบ 3 11 มค 2021"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "Sb7qn8lEJ3Gy",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "cbb3bd19-2021-45e3-fbb2-8a7bcfe486c7"
      },
      "source": [
        "len(t)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "14"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 68
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "ZijhE00ak3f3",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "a35a17fa-196c-4651-bcb9-9f0e50e179d3"
      },
      "source": [
        "list_b"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[111, 'c', 'งง', 1092, 'u']"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 69
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "MT4PMgvSJ3Gy",
        "outputId": "17c8526b-a560-4fab-ae15-50d59c4bb103"
      },
      "source": [
        "len(list_b) # len คือคำสั่งตรวจสอบความยาวของ list (จำนวนสมาชิก)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "5"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 70
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "_cTxNpRVewFq",
        "outputId": "8ce89ed9-2697-4523-bc2f-e7db71ed2211"
      },
      "source": [
        "list_b.append(t)\r\n",
        "print(list_b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[111, 'c', 'งง', 1092, 'u', 'python is easy']\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "gFt8MOOZef3M"
      },
      "source": [
        "### ตัวที่อยู่ข้างใน [ ] เราเรียกว่า index (ตัวชี้)"
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "sQt-ldH5J3Gz"
      },
      "source": [
        "### List slicing สามารถทำได้โดยใช้ colon :\n",
        "[a:b] -> [a,b) \n",
        "![9.gif](data:image/gif;base64,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) \n"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "Q33VSRhhJ3Gz",
        "outputId": "daa8a38f-3987-4e73-bebf-f0533f627237"
      },
      "source": [
        "print(t)\r\n",
        "print(t[7:9])\r\n",
        "print(len(t[7:9]))"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "python is easy\n",
            "is\n",
            "2\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "nN4MEDa1niH-",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "outputId": "0e39b6b8-8f74-4038-a90d-ce022d2170da"
      },
      "source": [
        "t[0:14:2]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'pto ses'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 74
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "tMOobKP5oHSY"
      },
      "source": [
        "Z = [1,2,3,4,5,6,7,8,9,10]"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "FEy4xM4MoQAV"
      },
      "source": [
        "### quiz\r\n",
        "ให้ใช้ list slicing เลือกมาเฉพาะเลขคู่"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "yYCOv4SooaWO",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "43ab1cc0-ffc6-46ed-92f3-9a1a3cd1924c"
      },
      "source": [
        "Z[1:10:2]"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "[2, 4, 6, 8, 10]"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 76
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "SoaWuAvGhBzx"
      },
      "source": [
        "ถ้าเว้นว่างหน้า : หมายความว่า เริ่มตั้งแต่ตัวแรก (0)\r\n",
        "\r\n",
        "ถ้าเว้นว่างหลัง : หมายความว่า ไปจนถึงตัวสุดท้าย (len(list))"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "-xBD4-1-g4lp",
        "outputId": "8a4da4be-90f8-4c26-8a9f-baff52e63a2b"
      },
      "source": [
        "print(t)\r\n",
        "print(t[:6])\r\n",
        "print(t[10:])\r\n",
        "print(t[-4:])\r\n",
        "print(t[:])"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "python is easy\n",
            "python\n",
            "easy\n",
            "easy\n",
            "python is easy\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "TgS8KJKApz6Y",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "289bef45-4308-4339-c0d1-478e5ea2d8e1"
      },
      "source": [
        "print(Z[::2])"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[1, 3, 5, 7, 9]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "YSoN7fl9J3G1"
      },
      "source": [
        "#### เราสามารถเอา list มาต่อกันได้ด้วย +"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "id": "OoUZt83iJ3G1",
        "outputId": "d8dab7d9-e891-46c0-97df-dcd213641d6a"
      },
      "source": [
        " t + '??'"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'python is easy??'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 79
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 162
        },
        "id": "Ik9WmOZoisKD",
        "outputId": "c94b8d31-3536-4fba-e90a-6a243fbd5ba4"
      },
      "source": [
        "t + list_b ## ไม่สามารถเอา list ปกติมาต่อกับ string ได้"
      ],
      "execution_count": null,
      "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-80-8ceeb7529eac>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mt\u001b[0m \u001b[0;34m+\u001b[0m \u001b[0mlist_b\u001b[0m \u001b[0;31m## ไม่สามารถเอา list ปกติมาต่อกับ string ได้\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
            "\u001b[0;31mTypeError\u001b[0m: must be str, not list"
          ]
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "z56m7Q29iWXI",
        "outputId": "e4b9b5b7-5097-41d7-99f6-3828da1c9f4c"
      },
      "source": [
        "print(list_a)\r\n",
        "list_b = [111,'c','งง',aaa]\r\n",
        "print(list_b)\r\n",
        "print(list_b + list_a) # + คือเอาสมาชิกมารวมกัน"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[]\n",
            "[111, 'c', 'งง', 1092]\n",
            "[111, 'c', 'งง', 1092]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "uexH7aYFs76-",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "551a1b6d-347a-4ddf-902a-379325f49fa9"
      },
      "source": [
        "list_b.append(list_a)\r\n",
        "print(list_b)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "[111, 'c', 'งง', 1092, []]\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "GWJi8kGLJ3G1"
      },
      "source": [
        "#### การแบ่ง string ตามสัญลักษณ์ที่กำหนด -> split string"
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "TW6Tuxsst2xv",
        "colab": {
          "base_uri": "https://localhost:8080/",
          "height": 35
        },
        "outputId": "2f03ffe4-6c79-4410-a3c2-f1bfe770eee0"
      },
      "source": [
        "t"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "application/vnd.google.colaboratory.intrinsic+json": {
              "type": "string"
            },
            "text/plain": [
              "'python is easy'"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 92
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "AnpBykIoJ3G1",
        "outputId": "6f772e5a-fe72-4acf-a903-b79219e5082f"
      },
      "source": [
        "t.split(' ')"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "['python', 'is', 'easy']"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 93
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "iAXvmowYJ3G2"
      },
      "source": [
        "time = '12:30:15'"
      ],
      "execution_count": null,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "KlYa6JHiJ3G2",
        "outputId": "b31f4a73-ee12-4d38-f3ae-f74ae62830d4"
      },
      "source": [
        "time.split(':')"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "execute_result",
          "data": {
            "text/plain": [
              "['12', '30', '15']"
            ]
          },
          "metadata": {
            "tags": []
          },
          "execution_count": 95
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "id": "nfVAyjasj4dq",
        "outputId": "aaa3039c-01f8-45dc-f982-9e3e8dae1897"
      },
      "source": [
        "t_sp = t.split(' ')\r\n",
        "print(t_sp)"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "['python', 'is', 'easy']\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "4qslOwNCu6Sl",
        "colab": {
          "base_uri": "https://localhost:8080/"
        },
        "outputId": "82b7f90b-0d7c-4105-8f7b-5ed4416683c3"
      },
      "source": [
        "## วิธีรวมกลับ\r\n",
        "print(':'.join(t_sp))\r\n"
      ],
      "execution_count": null,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "python:is:easy\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "markdown",
      "metadata": {
        "id": "ZbO2O78tJ3G7"
      },
      "source": [
        "### HW คำนวณเวลาเป็นวินาทีของเวลาต่อไปนี้โดยใช้คำสั่ง split() ช่วย (print ออกมาให้สวยงาม)\n",
        "12:30:15\n",
        "\n",
        "13:41:07\n",
        "\n",
        "12:53:15\n",
        "\n",
        "00:59:25\n",
        "\n",
        "11:11:11\n",
        "\n",
        "16:06:09\n",
        "\n",
        "21:12:30\n",
        "\n",
        "10:06:15\n",
        "\n",
        "ตัวอย่าง > 00:01:10 = 70 วินาที\n",
        "\n",
        "ตัวอย่าง > 01:00:01 = 3601 วินาที "
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "F5SleBYkkzKw"
      },
      "source": [
        "q1 = '12:30:15'"
      ],
      "execution_count": 1,
      "outputs": []
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "xNX3RwOIOLDw",
        "outputId": "afd93ee7-85df-48a0-a4bc-8b968530fdd0",
        "colab": {
          "base_uri": "https://localhost:8080/"
        }
      },
      "source": [
        "q1_sp = q1.split(':')\r\n",
        "print(q1_sp)"
      ],
      "execution_count": 3,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "['12', '30', '15']\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "ZqzJSw9xOTbq",
        "outputId": "5bcef6d5-b0ff-4686-d000-3f35eec7869b",
        "colab": {
          "base_uri": "https://localhost:8080/"
        }
      },
      "source": [
        "answer1 = int(q1_sp[0])*3600 + int(q1_sp[1])*60 + int(q1_sp[2])\r\n",
        "print(answer1)"
      ],
      "execution_count": 13,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "45015\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "kBpKbRCOPOQ0",
        "outputId": "47e5c3fd-bc89-48c5-9f35-b7a3ff54c693",
        "colab": {
          "base_uri": "https://localhost:8080/"
        }
      },
      "source": [
        "print(f'เวลา {q1} คำนวณเป็นจำนวนวินาทีได้เท่ากับ {answer1}')"
      ],
      "execution_count": 14,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "เวลา 12:30:15 คำนวณเป็นจำนวนวินาทีได้เท่ากับ 45015\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "-0UoDoigRVwE",
        "outputId": "70a91525-4bea-4b03-d83c-7166aa183323",
        "colab": {
          "base_uri": "https://localhost:8080/"
        }
      },
      "source": [
        "q1 = '12:30:15'\r\n",
        "q1_sp = q1.split(':')\r\n",
        "answer1 = int(q1_sp[0])*3600 + int(q1_sp[1])*60 + int(q1_sp[2])\r\n",
        "print(f'เวลา {q1} คำนวณเป็นจำนวนวินาทีได้เท่ากับ {answer1}')"
      ],
      "execution_count": 15,
      "outputs": [
        {
          "output_type": "stream",
          "text": [
            "เวลา 12:30:15 คำนวณเป็นจำนวนวินาทีได้เท่ากับ 45015\n"
          ],
          "name": "stdout"
        }
      ]
    },
    {
      "cell_type": "code",
      "metadata": {
        "id": "Fmf7Vxp9RcPL"
      },
      "source": [
        ""
      ],
      "execution_count": null,
      "outputs": []
    }
  ]
}