Học lập trình Python 2022 tại Hà Nội, Sài gòn livestream lớp PYMI2210

PYMI2210_01.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "4d754dc5",
   "metadata": {},
   "source": [
    "# Welcome to pymi!"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "dde1e102",
   "metadata": {},
   "source": [
    "### projecteuler.net 1"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6f9523cd",
   "metadata": {},
   "source": [
    "\n",
    "\n",
    "If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.\n",
    "\n",
    "Find the sum of all the multiples of 3 or 5 below 1000.\n"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "id": "320dad1e",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "233168"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "sum(i for i in range(0, 1000) if i % 3 == 0 or i % 5 == 0)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "a8b184e6",
   "metadata": {},
   "source": [
    "## tài liệu"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "13dbd7b4",
   "metadata": {},
   "source": [
    "https://docs.python.org/3/"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "0a42ffd0",
   "metadata": {},
   "source": [
    "## cách học"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "f56cfa67",
   "metadata": {},
   "source": [
    "- không ghi chép\n",
    "- tập trung gõ, thử nghiệm"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "537126f8",
   "metadata": {},
   "source": [
    "## bật python"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "9020e9bd",
   "metadata": {},
   "source": [
    "python3 "
   ]
  },
  {
   "cell_type": "markdown",
   "id": "400d56d6",
   "metadata": {},
   "source": [
    "```py\n",
    "$ python3 \n",
    "Python 3.8.10 (default, Jun 22 2022, 20:18:18) \n",
    "[GCC 9.4.0] on linux\n",
    "Type \"help\", \"copyright\", \"credits\" or \"license\" for more information.\n",
    ">>> 1+1\n",
    "2\n",
    ">>> \n"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "d8c0c419",
   "metadata": {},
   "source": [
    "### `>>>` - prompt"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "79134135",
   "metadata": {},
   "source": [
    "chờ nhập phép tính, enter thì hienej kêt quả ở dòng sau "
   ]
  },
  {
   "cell_type": "markdown",
   "id": "8677a3a4",
   "metadata": {},
   "source": [
    "## phép cộng - addition"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "id": "764fd9ef",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "1 + 1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "id": "d31d3f05",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "4"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "2 + 2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "id": "c220869c",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "225324"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "213012 + 12312"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "id": "0dd7604e",
   "metadata": {},
   "outputs": [
    {
     "ename": "SyntaxError",
     "evalue": "leading zeros in decimal integer literals are not permitted; use an 0o prefix for octal integers (3723730088.py, line 1)",
     "output_type": "error",
     "traceback": [
      "\u001b[0;36m  File \u001b[0;32m\"/tmp/ipykernel_367206/3723730088.py\"\u001b[0;36m, line \u001b[0;32m1\u001b[0m\n\u001b[0;31m    01111+1111\u001b[0m\n\u001b[0m        ^\u001b[0m\n\u001b[0;31mSyntaxError\u001b[0m\u001b[0;31m:\u001b[0m leading zeros in decimal integer literals are not permitted; use an 0o prefix for octal integers\n"
     ]
    }
   ],
   "source": [
    "01111+1111"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "id": "b87ac79f",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "48764183274618362378601371343831726014533"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "48764183274618327647316478126347813264721 + 34731284893217483912749812"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "e755e4c2",
   "metadata": {},
   "source": [
    "## lớp kết luận: cộng thoải mái"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "321f9890",
   "metadata": {},
   "source": [
    "## phép trừ - subtract"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "id": "7fd8a95f",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "-12191"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "123 - 12314"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "id": "723c5123",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "11111111111111111111111111109878888888888888888888888888888888888888888888888888888889"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "11111111111111111111111111111111111111111111111111111111111111111111111111111111111111 -1232222222222222222222222222222222222222222222222222222222"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "0b272142",
   "metadata": {},
   "source": [
    "## trừ thoải mái "
   ]
  },
  {
   "cell_type": "markdown",
   "id": "0055eaf9",
   "metadata": {},
   "source": [
    "## nhân - multiply * "
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "id": "66b4ed05",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "10"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "2 * 5"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "fce17a37",
   "metadata": {},
   "source": [
    "### nhân thoải mái "
   ]
  },
  {
   "cell_type": "markdown",
   "id": "fa788157",
   "metadata": {},
   "source": [
    "## phép chia - division\n",
    "## / - slash"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 12,
   "id": "1bdddd7f",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2.5"
      ]
     },
     "execution_count": 12,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "5 / 2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 13,
   "id": "fec509e9",
   "metadata": {
    "scrolled": true
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2.0"
      ]
     },
     "execution_count": 13,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "4/2"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "4886be0b",
   "metadata": {},
   "source": [
    "4/2 được 2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "2b599620",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "markdown",
   "id": "9609a0ef",
   "metadata": {},
   "source": [
    "## \\ - backslash"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "20a7b7f1",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "markdown",
   "id": "8c17dae1",
   "metadata": {},
   "source": [
    "## chia thoải mái"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "id": "be6e6da7",
   "metadata": {},
   "outputs": [
    {
     "ename": "ZeroDivisionError",
     "evalue": "division by zero",
     "output_type": "error",
     "traceback": [
      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
      "\u001b[0;31mZeroDivisionError\u001b[0m                         Traceback (most recent call last)",
      "\u001b[0;32m/tmp/ipykernel_367206/2590173015.py\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0;36m6\u001b[0m\u001b[0;34m/\u001b[0m\u001b[0;36m0\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
      "\u001b[0;31mZeroDivisionError\u001b[0m: division by zero"
     ]
    }
   ],
   "source": [
    "6/0"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "965e3aad",
   "metadata": {},
   "source": [
    "### 6 chia 0 xảy ra Exception ZeroDivisionError"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "2fbc3425",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": 15,
   "id": "a717c086",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2.0"
      ]
     },
     "execution_count": 15,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "4/2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 16,
   "id": "c6bd9114",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2"
      ]
     },
     "execution_count": 16,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "1+1"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "0ccc5f85",
   "metadata": {},
   "source": [
    "## type - kiểu dữ liệu"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 17,
   "id": "d512217c",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "int"
      ]
     },
     "execution_count": 17,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "type(2)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "3870fe07",
   "metadata": {},
   "source": [
    "## int - integer"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "06b78ec7",
   "metadata": {},
   "source": [
    "/ˈɪn.tɪ.dʒər/  /ˈɪn.tə.dʒɚ/"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 18,
   "id": "e75b93cf",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "float"
      ]
     },
     "execution_count": 18,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "type(2.0)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "673f9d50",
   "metadata": {},
   "source": [
    "## cache  /kæʃ/ - cash"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "23f53d8c",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "69184751",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "markdown",
   "id": "459d35ba",
   "metadata": {},
   "source": [
    "## sort  /sɔːt/"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "376d3f1f",
   "metadata": {},
   "source": [
    "## resort  /rɪˈzɔːt/"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b7305547",
   "metadata": {},
   "source": [
    "## suit"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "f657a3d1",
   "metadata": {},
   "source": [
    "## suite - sweet"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "48796468",
   "metadata": {},
   "source": [
    "https://dictionary.cambridge.org/dictionary/english/sort"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "0c0e0656",
   "metadata": {},
   "outputs": [],
   "source": []
  },
  {
   "cell_type": "markdown",
   "id": "7c30a747",
   "metadata": {},
   "source": [
    "## float  /fləʊt/ /floʊt/"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "id": "8f754b59",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "float"
      ]
     },
     "execution_count": 19,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "type(2.2)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "ba0af627",
   "metadata": {},
   "source": [
    "## số thực "
   ]
  },
  {
   "cell_type": "markdown",
   "id": "6d34e125",
   "metadata": {},
   "source": [
    "(số hữu tỷ ) + (số vô tỷ)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "40f1a327",
   "metadata": {},
   "source": [
    "## số hữu tỷ - có tỷ lệ \n",
    "## có thể viết ở dạng phân sô"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "id": "fc89a554",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0.3333333333333333"
      ]
     },
     "execution_count": 21,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "1/3"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "82b6f901",
   "metadata": {},
   "source": [
    "## số vô tỷ- không tỷ lệ\n",
    "## không biểu diễn được ở dạng phân số"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "id": "fe1d6eea",
   "metadata": {},
   "outputs": [],
   "source": [
    "import math"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 23,
   "id": "36920747",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "3.141592653589793"
      ]
     },
     "execution_count": 23,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "math.pi"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 24,
   "id": "99d4cbe6",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1.4142135623730951"
      ]
     },
     "execution_count": 24,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "math.sqrt(2)"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "cd694bab",
   "metadata": {},
   "source": [
    "## float là kiểu dữ liệu gần đúng"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "id": "f83b35f2",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "1.0"
      ]
     },
     "execution_count": 25,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "1.0"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 26,
   "id": "db4afc02",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0.2"
      ]
     },
     "execution_count": 26,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "0.1 + 0.1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 27,
   "id": "c0f045d4",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 27,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "0.1 + 0.1 == 0.2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 28,
   "id": "4d6db28d",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "True"
      ]
     },
     "execution_count": 28,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "1 + 1 == 2"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 30,
   "id": "64939fe2",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "False"
      ]
     },
     "execution_count": 30,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "1 + 1 == 3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 32,
   "id": "fc630533",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "False"
      ]
     },
     "execution_count": 32,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "0.1 + 0.1 + 0.1 == 0.3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 33,
   "id": "f5ffb415",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "0.30000000000000004"
      ]
     },
     "execution_count": 33,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "0.1 + 0.1 + 0.1"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "607912fe",
   "metadata": {},
   "source": [
    "https://pymi.vn/blog/why-not-float/"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 34,
   "id": "51d94db2",
   "metadata": {},
   "outputs": [],
   "source": [
    "x = 0.1"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 35,
   "id": "6a477843",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(3602879701896397, 36028797018963968)"
      ]
     },
     "execution_count": 35,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "x.as_integer_ratio()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 36,
   "id": "e15ff4a0",
   "metadata": {},
   "outputs": [],
   "source": [
    "y = 0.3"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 37,
   "id": "023fd532",
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "(5404319552844595, 18014398509481984)"
      ]
     },
     "execution_count": 37,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "y.as_integer_ratio()"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "be4751d5",
   "metadata": {},
   "source": [
    "## không so sánh == float"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "b06e14d0",
   "metadata": {},
   "source": [
    "https://docs.python.org/3/tutorial/floatingpoint.html"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "id": "aa6df9d6",
   "metadata": {},
   "outputs": [],
   "source": []
  }
 ],
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